{"transactions":[{"id":675174,"issuer":{"id":6567,"kind":"organization","name":"Brilliant Earth Group, Inc."},"owners":[{"id":19550,"kind":"organization","name":"MAINSAIL GP III, LLC","position":1,"cik":"0001883360","reported_name":"MAINSAIL GP III, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19551,"kind":"organization","name":"Mainsail Partners III, L.P.","position":2,"cik":"0001543760","reported_name":"Mainsail Partners III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19552,"kind":"organization","name":"Mainsail Co-Investors III, L.P.","position":3,"cik":"0001570211","reported_name":"Mainsail Co-Investors III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19553,"kind":"organization","name":"MAINSAIL INCENTIVE PROGRAM, LLC","position":4,"cik":"0001883293","reported_name":"MAINSAIL INCENTIVE PROGRAM, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19554,"kind":"organization","name":"MAINSAIL MANAGEMENT COMPANY, LLC","position":5,"cik":"0001883367","reported_name":"MAINSAIL MANAGEMENT COMPANY, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"LLC Units","published_at":"2026-08-26T20:15:04.000Z","date":"2026-08-24","kind":"other","planned":false,"acquired":true,"shares":16014,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were acquired by the Reporting Persons prior to the Issuer's initial public offering, do not expire."},{"field":"kind","element":"transactionCoding","label":"F1","text":"The reported transaction, which involves a purchase of a limited partner's interest in Mainsail Co-Investors III, L.P. (\"MCOI\"), may represent a change in the Reporting Persons' pecuniary interest in common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock held by MCOI. For purposes of Section 16(b), such deemed purchase, for an aggregate consideration of $18,096, could be matchable against the sales reported on August 10, 2026, as reported on the Form 4 filed by the Reporting Persons on August 12, 2026. Accordingly, the Reporting Persons have fully disgorged to the Issuer, the Section 16(b) deemed profit of $2,033."},{"field":"shares","element":"transactionShares","label":"F1","text":"The reported transaction, which involves a purchase of a limited partner's interest in Mainsail Co-Investors III, L.P. (\"MCOI\"), may represent a change in the Reporting Persons' pecuniary interest in common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock held by MCOI. For purposes of Section 16(b), such deemed purchase, for an aggregate consideration of $18,096, could be matchable against the sales reported on August 10, 2026, as reported on the Form 4 filed by the Reporting Persons on August 12, 2026. Accordingly, the Reporting Persons have fully disgorged to the Issuer, the Section 16(b) deemed profit of $2,033."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The reported transaction, which involves a purchase of a limited partner's interest in Mainsail Co-Investors III, L.P. (\"MCOI\"), may represent a change in the Reporting Persons' pecuniary interest in common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock held by MCOI. For purposes of Section 16(b), such deemed purchase, for an aggregate consideration of $18,096, could be matchable against the sales reported on August 10, 2026, as reported on the Form 4 filed by the Reporting Persons on August 12, 2026. Accordingly, the Reporting Persons have fully disgorged to the Issuer, the Section 16(b) deemed profit of $2,033."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were acquired by the Reporting Persons prior to the Issuer's initial public offering, do not expire."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were acquired by the Reporting Persons prior to the Issuer's initial public offering, do not expire."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"The reported transaction, which involves a purchase of a limited partner's interest in Mainsail Co-Investors III, L.P. (\"MCOI\"), may represent a change in the Reporting Persons' pecuniary interest in common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock held by MCOI. For purposes of Section 16(b), such deemed purchase, for an aggregate consideration of $18,096, could be matchable against the sales reported on August 10, 2026, as reported on the Form 4 filed by the Reporting Persons on August 12, 2026. Accordingly, the Reporting Persons have fully disgorged to the Issuer, the Section 16(b) deemed profit of $2,033."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Consists of (i) 31,098,704 shares of Class B common stock (and associated LLC Units) held by Mainsail Partners III, L.P. (\"MP III\"), (ii) 61,823 shares of Class B common stock (and associated LLC Units) held by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 687,544 shares of Class B common stock (and associated LLC Units) held by MCOI."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Consists of (i) 31,098,704 shares of Class B common stock (and associated LLC Units) held by Mainsail Partners III, L.P. (\"MP III\"), (ii) 61,823 shares of Class B common stock (and associated LLC Units) held by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 687,544 shares of Class B common stock (and associated LLC Units) held by MCOI."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The Reporting Persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."}],"balance_after":31848071,"derivative":{"underlying":"Class A Common Stock","underlying_shares":16014},"source":{"system":"sec-edgar","filing":"0001193125-26-368530","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1883293/000119312526368530/ownership.xml","form_type":"4"}},{"id":675173,"issuer":{"id":6567,"kind":"organization","name":"Brilliant Earth Group, Inc."},"owners":[{"id":19550,"kind":"organization","name":"MAINSAIL GP III, LLC","position":1,"cik":"0001883360","reported_name":"MAINSAIL GP III, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19551,"kind":"organization","name":"Mainsail Partners III, L.P.","position":2,"cik":"0001543760","reported_name":"Mainsail Partners III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19552,"kind":"organization","name":"Mainsail Co-Investors III, L.P.","position":3,"cik":"0001570211","reported_name":"Mainsail Co-Investors III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19553,"kind":"organization","name":"MAINSAIL INCENTIVE PROGRAM, LLC","position":4,"cik":"0001883293","reported_name":"MAINSAIL INCENTIVE PROGRAM, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19554,"kind":"organization","name":"MAINSAIL MANAGEMENT COMPANY, LLC","position":5,"cik":"0001883367","reported_name":"MAINSAIL MANAGEMENT COMPANY, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2026-08-26T20:15:04.000Z","date":"2026-08-24","kind":"other","planned":false,"acquired":true,"shares":16014,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The reported transaction, which involves a purchase of a limited partner's interest in Mainsail Co-Investors III, L.P. (\"MCOI\"), may represent a change in the Reporting Persons' pecuniary interest in common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock held by MCOI. For purposes of Section 16(b), such deemed purchase, for an aggregate consideration of $18,096, could be matchable against the sales reported on August 10, 2026, as reported on the Form 4 filed by the Reporting Persons on August 12, 2026. Accordingly, the Reporting Persons have fully disgorged to the Issuer, the Section 16(b) deemed profit of $2,033."},{"field":"shares","element":"transactionShares","label":"F1","text":"The reported transaction, which involves a purchase of a limited partner's interest in Mainsail Co-Investors III, L.P. (\"MCOI\"), may represent a change in the Reporting Persons' pecuniary interest in common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock held by MCOI. For purposes of Section 16(b), such deemed purchase, for an aggregate consideration of $18,096, could be matchable against the sales reported on August 10, 2026, as reported on the Form 4 filed by the Reporting Persons on August 12, 2026. Accordingly, the Reporting Persons have fully disgorged to the Issuer, the Section 16(b) deemed profit of $2,033."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The reported transaction, which involves a purchase of a limited partner's interest in Mainsail Co-Investors III, L.P. (\"MCOI\"), may represent a change in the Reporting Persons' pecuniary interest in common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock held by MCOI. For purposes of Section 16(b), such deemed purchase, for an aggregate consideration of $18,096, could be matchable against the sales reported on August 10, 2026, as reported on the Form 4 filed by the Reporting Persons on August 12, 2026. Accordingly, the Reporting Persons have fully disgorged to the Issuer, the Section 16(b) deemed profit of $2,033."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Consists of (i) 31,098,704 shares of Class B common stock (and associated LLC Units) held by Mainsail Partners III, L.P. (\"MP III\"), (ii) 61,823 shares of Class B common stock (and associated LLC Units) held by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 687,544 shares of Class B common stock (and associated LLC Units) held by MCOI."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Consists of (i) 31,098,704 shares of Class B common stock (and associated LLC Units) held by Mainsail Partners III, L.P. (\"MP III\"), (ii) 61,823 shares of Class B common stock (and associated LLC Units) held by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 687,544 shares of Class B common stock (and associated LLC Units) held by MCOI."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The Reporting Persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."}],"balance_after":31848071,"source":{"system":"sec-edgar","filing":"0001193125-26-368530","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1883293/000119312526368530/ownership.xml","form_type":"4"}},{"id":689422,"issuer":{"id":6567,"kind":"organization","name":"Brilliant Earth Group, Inc."},"owners":[{"id":19550,"kind":"organization","name":"MAINSAIL GP III, LLC","position":1,"cik":"0001883360","reported_name":"MAINSAIL GP III, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19551,"kind":"organization","name":"Mainsail Partners III, L.P.","position":2,"cik":"0001543760","reported_name":"Mainsail Partners III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19552,"kind":"organization","name":"Mainsail Co-Investors III, L.P.","position":3,"cik":"0001570211","reported_name":"Mainsail Co-Investors III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19553,"kind":"organization","name":"MAINSAIL INCENTIVE PROGRAM, LLC","position":4,"cik":"0001883293","reported_name":"MAINSAIL INCENTIVE PROGRAM, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19554,"kind":"organization","name":"MAINSAIL MANAGEMENT COMPANY, LLC","position":5,"cik":"0001883367","reported_name":"MAINSAIL MANAGEMENT COMPANY, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"LLC Units","published_at":"2026-08-12T23:18:03.000Z","date":"2026-08-10","kind":"exercise","planned":false,"acquired":false,"shares":50000,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 48,824 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 97 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 1,079 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"kind","element":"transactionCoding","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"shares","element":"transactionShares","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 48,824 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 97 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 1,079 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Consists of (i) 31,098,704 shares of Class B common stock (and associated LLC Units) held by MP III, (ii) 61,823 shares of Class B common stock (and associated LLC Units) held by MIP, and (iii) 687,544 shares of Class B common stock (and associated LLC Units) held by MCOI."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Consists of (i) 31,098,704 shares of Class B common stock (and associated LLC Units) held by MP III, (ii) 61,823 shares of Class B common stock (and associated LLC Units) held by MIP, and (iii) 687,544 shares of Class B common stock (and associated LLC Units) held by MCOI."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."}],"balance_after":31848071,"derivative":{"underlying":"Class A Common Stock","underlying_shares":50000},"source":{"system":"sec-edgar","filing":"0001193125-26-347377","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1883293/000119312526347377/ownership.xml","form_type":"4"}},{"id":689421,"issuer":{"id":6567,"kind":"organization","name":"Brilliant Earth Group, Inc."},"owners":[{"id":19550,"kind":"organization","name":"MAINSAIL GP III, LLC","position":1,"cik":"0001883360","reported_name":"MAINSAIL GP III, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19551,"kind":"organization","name":"Mainsail Partners III, L.P.","position":2,"cik":"0001543760","reported_name":"Mainsail Partners III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19552,"kind":"organization","name":"Mainsail Co-Investors III, L.P.","position":3,"cik":"0001570211","reported_name":"Mainsail Co-Investors III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19553,"kind":"organization","name":"MAINSAIL INCENTIVE PROGRAM, LLC","position":4,"cik":"0001883293","reported_name":"MAINSAIL INCENTIVE PROGRAM, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19554,"kind":"organization","name":"MAINSAIL MANAGEMENT COMPANY, LLC","position":5,"cik":"0001883367","reported_name":"MAINSAIL MANAGEMENT COMPANY, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2026-08-12T23:18:03.000Z","date":"2026-08-10","kind":"sale","planned":false,"acquired":false,"shares":50000,"price":1.287,"value":64350.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."},{"field":"shares","element":"transactionShares","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 48,824 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 97 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 1,079 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"This transaction was executed in multiple trades at prices ranging from $1.25 to $1.40, inclusive. The reported price reflects the weighted average sale price. The reporting persons hereby undertake to provide upon request to the United States Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transaction was affected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001193125-26-347377","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1883293/000119312526347377/ownership.xml","form_type":"4"}},{"id":689420,"issuer":{"id":6567,"kind":"organization","name":"Brilliant Earth Group, Inc."},"owners":[{"id":19550,"kind":"organization","name":"MAINSAIL GP III, LLC","position":1,"cik":"0001883360","reported_name":"MAINSAIL GP III, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19551,"kind":"organization","name":"Mainsail Partners III, L.P.","position":2,"cik":"0001543760","reported_name":"Mainsail Partners III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19552,"kind":"organization","name":"Mainsail Co-Investors III, L.P.","position":3,"cik":"0001570211","reported_name":"Mainsail Co-Investors III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19553,"kind":"organization","name":"MAINSAIL INCENTIVE PROGRAM, LLC","position":4,"cik":"0001883293","reported_name":"MAINSAIL INCENTIVE PROGRAM, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19554,"kind":"organization","name":"MAINSAIL MANAGEMENT COMPANY, LLC","position":5,"cik":"0001883367","reported_name":"MAINSAIL MANAGEMENT COMPANY, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2026-08-12T23:18:03.000Z","date":"2026-08-10","kind":"exercise","planned":false,"acquired":true,"shares":50000,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 48,824 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 97 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 1,079 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"shares","element":"transactionShares","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 48,824 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 97 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 1,079 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 48,824 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 97 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 1,079 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."}],"balance_after":50000,"source":{"system":"sec-edgar","filing":"0001193125-26-347377","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1883293/000119312526347377/ownership.xml","form_type":"4"}},{"id":689419,"issuer":{"id":6567,"kind":"organization","name":"Brilliant Earth Group, Inc."},"owners":[{"id":19550,"kind":"organization","name":"MAINSAIL GP III, LLC","position":1,"cik":"0001883360","reported_name":"MAINSAIL GP III, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19551,"kind":"organization","name":"Mainsail Partners III, L.P.","position":2,"cik":"0001543760","reported_name":"Mainsail Partners III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19552,"kind":"organization","name":"Mainsail Co-Investors III, L.P.","position":3,"cik":"0001570211","reported_name":"Mainsail Co-Investors III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19553,"kind":"organization","name":"MAINSAIL INCENTIVE PROGRAM, LLC","position":4,"cik":"0001883293","reported_name":"MAINSAIL INCENTIVE PROGRAM, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19554,"kind":"organization","name":"MAINSAIL MANAGEMENT COMPANY, LLC","position":5,"cik":"0001883367","reported_name":"MAINSAIL MANAGEMENT COMPANY, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2026-08-12T23:18:03.000Z","date":"2026-08-10","kind":"exercise","planned":false,"acquired":false,"shares":50000,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 48,824 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 97 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 1,079 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"kind","element":"transactionCoding","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"shares","element":"transactionShares","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 48,824 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 97 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 1,079 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 48,824 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 97 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 1,079 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Consists of (i) 31,098,704 shares of Class B common stock (and associated LLC Units) held by MP III, (ii) 61,823 shares of Class B common stock (and associated LLC Units) held by MIP, and (iii) 687,544 shares of Class B common stock (and associated LLC Units) held by MCOI."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Consists of (i) 31,098,704 shares of Class B common stock (and associated LLC Units) held by MP III, (ii) 61,823 shares of Class B common stock (and associated LLC Units) held by MIP, and (iii) 687,544 shares of Class B common stock (and associated LLC Units) held by MCOI."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."}],"balance_after":31848071,"source":{"system":"sec-edgar","filing":"0001193125-26-347377","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1883293/000119312526347377/ownership.xml","form_type":"4"}},{"id":1204109,"issuer":{"id":6567,"kind":"organization","name":"Brilliant Earth Group, Inc."},"owners":[{"id":19550,"kind":"organization","name":"MAINSAIL GP III, LLC","position":1,"cik":"0001883360","reported_name":"MAINSAIL GP III, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19551,"kind":"organization","name":"Mainsail Partners III, L.P.","position":2,"cik":"0001543760","reported_name":"Mainsail Partners III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19552,"kind":"organization","name":"Mainsail Co-Investors III, L.P.","position":3,"cik":"0001570211","reported_name":"Mainsail Co-Investors III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19553,"kind":"organization","name":"MAINSAIL INCENTIVE PROGRAM, LLC","position":4,"cik":"0001883293","reported_name":"MAINSAIL INCENTIVE PROGRAM, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19554,"kind":"organization","name":"MAINSAIL MANAGEMENT COMPANY, LLC","position":5,"cik":"0001883367","reported_name":"MAINSAIL MANAGEMENT COMPANY, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"LLC Units","published_at":"2025-03-17T20:58:44.000Z","date":"2025-03-13","kind":"exercise","planned":true,"acquired":false,"shares":2700,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 2,637 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 5 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 58 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"kind","element":"transactionCoding","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"shares","element":"transactionShares","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 2,637 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 5 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 58 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Consists of (i) 31,147,528 shares of Class B common stock (and associated LLC Units) held by MP III, (ii) 61,920 shares of Class B common stock (and associated LLC Units) held by MIP, and (iii) 688,623 shares of Class B common stock (and associated LLC Units) held by MCOI."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Consists of (i) 31,147,528 shares of Class B common stock (and associated LLC Units) held by MP III, (ii) 61,920 shares of Class B common stock (and associated LLC Units) held by MIP, and (iii) 688,623 shares of Class B common stock (and associated LLC Units) held by MCOI."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."}],"balance_after":31898071,"derivative":{"underlying":"Class A Common Stock","underlying_shares":2700},"source":{"system":"sec-edgar","filing":"0000950170-25-040443","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1883293/000095017025040443/ownership.xml","form_type":"4"}},{"id":1204108,"issuer":{"id":6567,"kind":"organization","name":"Brilliant Earth Group, Inc."},"owners":[{"id":19550,"kind":"organization","name":"MAINSAIL GP III, LLC","position":1,"cik":"0001883360","reported_name":"MAINSAIL GP III, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19551,"kind":"organization","name":"Mainsail Partners III, L.P.","position":2,"cik":"0001543760","reported_name":"Mainsail Partners III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19552,"kind":"organization","name":"Mainsail Co-Investors III, L.P.","position":3,"cik":"0001570211","reported_name":"Mainsail Co-Investors III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19553,"kind":"organization","name":"MAINSAIL INCENTIVE PROGRAM, LLC","position":4,"cik":"0001883293","reported_name":"MAINSAIL INCENTIVE PROGRAM, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19554,"kind":"organization","name":"MAINSAIL MANAGEMENT COMPANY, LLC","position":5,"cik":"0001883367","reported_name":"MAINSAIL MANAGEMENT COMPANY, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2025-03-17T20:58:44.000Z","date":"2025-03-13","kind":"sale","planned":true,"acquired":false,"shares":2700,"price":1.8541,"value":5006.07,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."},{"field":"shares","element":"transactionShares","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 2,637 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 5 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 58 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"This sale of shares of Class A common stock was executed pursuant to a Rule 10b5-1 plan that was entered into by the reporting persons during an open trading window. This transaction was executed in multiple trades at prices ranging from $1.75 to $1.94, inclusive. The reported price reflects the weighted average sale price. The reporting persons hereby undertake to provide upon request to the United States Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transaction was affected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000950170-25-040443","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1883293/000095017025040443/ownership.xml","form_type":"4"}},{"id":1204107,"issuer":{"id":6567,"kind":"organization","name":"Brilliant Earth Group, Inc."},"owners":[{"id":19550,"kind":"organization","name":"MAINSAIL GP III, LLC","position":1,"cik":"0001883360","reported_name":"MAINSAIL GP III, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19551,"kind":"organization","name":"Mainsail Partners III, L.P.","position":2,"cik":"0001543760","reported_name":"Mainsail Partners III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19552,"kind":"organization","name":"Mainsail Co-Investors III, L.P.","position":3,"cik":"0001570211","reported_name":"Mainsail Co-Investors III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19553,"kind":"organization","name":"MAINSAIL INCENTIVE PROGRAM, LLC","position":4,"cik":"0001883293","reported_name":"MAINSAIL INCENTIVE PROGRAM, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19554,"kind":"organization","name":"MAINSAIL MANAGEMENT COMPANY, LLC","position":5,"cik":"0001883367","reported_name":"MAINSAIL MANAGEMENT COMPANY, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2025-03-17T20:58:44.000Z","date":"2025-03-13","kind":"exercise","planned":true,"acquired":true,"shares":2700,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 2,637 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 5 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 58 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"shares","element":"transactionShares","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 2,637 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 5 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 58 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 2,637 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 5 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 58 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."}],"balance_after":2700,"source":{"system":"sec-edgar","filing":"0000950170-25-040443","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1883293/000095017025040443/ownership.xml","form_type":"4"}},{"id":1204106,"issuer":{"id":6567,"kind":"organization","name":"Brilliant Earth Group, Inc."},"owners":[{"id":19550,"kind":"organization","name":"MAINSAIL GP III, LLC","position":1,"cik":"0001883360","reported_name":"MAINSAIL GP III, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19551,"kind":"organization","name":"Mainsail Partners III, L.P.","position":2,"cik":"0001543760","reported_name":"Mainsail Partners III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19552,"kind":"organization","name":"Mainsail Co-Investors III, L.P.","position":3,"cik":"0001570211","reported_name":"Mainsail Co-Investors III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19553,"kind":"organization","name":"MAINSAIL INCENTIVE PROGRAM, LLC","position":4,"cik":"0001883293","reported_name":"MAINSAIL INCENTIVE PROGRAM, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19554,"kind":"organization","name":"MAINSAIL MANAGEMENT COMPANY, LLC","position":5,"cik":"0001883367","reported_name":"MAINSAIL MANAGEMENT COMPANY, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2025-03-17T20:58:44.000Z","date":"2025-03-13","kind":"exercise","planned":true,"acquired":false,"shares":2700,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 2,637 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 5 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 58 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"kind","element":"transactionCoding","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"shares","element":"transactionShares","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 2,637 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 5 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 58 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 2,637 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 5 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 58 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Consists of (i) 31,147,528 shares of Class B common stock (and associated LLC Units) held by MP III, (ii) 61,920 shares of Class B common stock (and associated LLC Units) held by MIP, and (iii) 688,623 shares of Class B common stock (and associated LLC Units) held by MCOI."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Consists of (i) 31,147,528 shares of Class B common stock (and associated LLC Units) held by MP III, (ii) 61,920 shares of Class B common stock (and associated LLC Units) held by MIP, and (iii) 688,623 shares of Class B common stock (and associated LLC Units) held by MCOI."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."}],"balance_after":31898071,"source":{"system":"sec-edgar","filing":"0000950170-25-040443","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1883293/000095017025040443/ownership.xml","form_type":"4"}},{"id":1698081,"issuer":{"id":6567,"kind":"organization","name":"Brilliant Earth Group, Inc."},"owners":[{"id":19550,"kind":"organization","name":"MAINSAIL GP III, LLC","position":1,"cik":"0001883360","reported_name":"MAINSAIL GP III, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19551,"kind":"organization","name":"Mainsail Partners III, L.P.","position":2,"cik":"0001543760","reported_name":"Mainsail Partners III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19552,"kind":"organization","name":"Mainsail Co-Investors III, L.P.","position":3,"cik":"0001570211","reported_name":"Mainsail Co-Investors III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19553,"kind":"organization","name":"MAINSAIL INCENTIVE PROGRAM, LLC","position":4,"cik":"0001883293","reported_name":"MAINSAIL INCENTIVE PROGRAM, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19554,"kind":"organization","name":"MAINSAIL MANAGEMENT COMPANY, LLC","position":5,"cik":"0001883367","reported_name":"MAINSAIL MANAGEMENT COMPANY, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"LLC Units","published_at":"2023-12-30T00:08:43.000Z","date":"2023-12-29","kind":"exercise","planned":true,"acquired":false,"shares":8222,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were     acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"kind","element":"transactionCoding","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were     acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"kind","element":"transactionCoding","label":"F9","text":"Represents the LLC Units and shares of Class B common stock exchanged for shares of Class A common stock including (i) 8,029  LLC Units and shares of Class B common stock exchanged by MP III, (ii) 16 LLC Units and shares of Class B common stock exchanged by MIP, and (iii) 177 LLC Units and shares of Class B common stock exchanged by MCOI."},{"field":"shares","element":"transactionShares","label":"F9","text":"Represents the LLC Units and shares of Class B common stock exchanged for shares of Class A common stock including (i) 8,029  LLC Units and shares of Class B common stock exchanged by MP III, (ii) 16 LLC Units and shares of Class B common stock exchanged by MIP, and (iii) 177 LLC Units and shares of Class B common stock exchanged by MCOI."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were     acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were     acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were     acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F10","text":"Consists of (i) 31,150,165  shares of Class B common stock (and associated LLC Units) held by MP III, (ii) 61,925 shares of Class B common stock (and associated LLC Units) held by MIP, and (iii) 688,681 shares of Class B common stock (and associated LLC Units) held by MCOI."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F10","text":"Consists of (i) 31,150,165  shares of Class B common stock (and associated LLC Units) held by MP III, (ii) 61,925 shares of Class B common stock (and associated LLC Units) held by MIP, and (iii) 688,681 shares of Class B common stock (and associated LLC Units) held by MCOI."}],"balance_after":31900771,"derivative":{"underlying":"Class A Common Stock","underlying_shares":8222},"source":{"system":"sec-edgar","filing":"0000950170-23-073948","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/1883293/000095017023073948/ownership.xml","form_type":"4"}},{"id":1698080,"issuer":{"id":6567,"kind":"organization","name":"Brilliant Earth Group, Inc."},"owners":[{"id":19550,"kind":"organization","name":"MAINSAIL GP III, LLC","position":1,"cik":"0001883360","reported_name":"MAINSAIL GP III, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19551,"kind":"organization","name":"Mainsail Partners III, L.P.","position":2,"cik":"0001543760","reported_name":"Mainsail Partners III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19552,"kind":"organization","name":"Mainsail Co-Investors III, L.P.","position":3,"cik":"0001570211","reported_name":"Mainsail Co-Investors III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19553,"kind":"organization","name":"MAINSAIL INCENTIVE PROGRAM, LLC","position":4,"cik":"0001883293","reported_name":"MAINSAIL INCENTIVE PROGRAM, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19554,"kind":"organization","name":"MAINSAIL MANAGEMENT COMPANY, LLC","position":5,"cik":"0001883367","reported_name":"MAINSAIL MANAGEMENT COMPANY, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"LLC Units","published_at":"2023-12-30T00:08:43.000Z","date":"2023-12-28","kind":"exercise","planned":true,"acquired":false,"shares":9191,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were     acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"kind","element":"transactionCoding","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were     acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"kind","element":"transactionCoding","label":"F6","text":"Represents the LLC Units and shares of Class B common stock exchanged for shares of Class A common stock including (i) 8,975 LLC Units and shares of Class B common stock exchanged by MP III, (ii) 18 LLC Units and shares of Class B common stock exchanged by MIP, and (iii) 198 LLC Units and shares of Class B common stock exchanged by MCOI."},{"field":"shares","element":"transactionShares","label":"F6","text":"Represents the LLC Units and shares of Class B common stock exchanged for shares of Class A common stock including (i) 8,975 LLC Units and shares of Class B common stock exchanged by MP III, (ii) 18 LLC Units and shares of Class B common stock exchanged by MIP, and (iii) 198 LLC Units and shares of Class B common stock exchanged by MCOI."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were     acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were     acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were     acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F7","text":"Consists of (i) 31,158,194 shares of Class B common stock (and associated LLC Units) held by MP III, (ii) 61,941 shares of Class B common stock (and associated LLC Units) held by MIP, and (iii) 688,858 shares of Class B common stock (and associated LLC Units) held by MCOI."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"Consists of (i) 31,158,194 shares of Class B common stock (and associated LLC Units) held by MP III, (ii) 61,941 shares of Class B common stock (and associated LLC Units) held by MIP, and (iii) 688,858 shares of Class B common stock (and associated LLC Units) held by MCOI."}],"balance_after":31908993,"derivative":{"underlying":"Class A Common Stock","underlying_shares":9191},"source":{"system":"sec-edgar","filing":"0000950170-23-073948","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1883293/000095017023073948/ownership.xml","form_type":"4"}},{"id":1698079,"issuer":{"id":6567,"kind":"organization","name":"Brilliant Earth Group, Inc."},"owners":[{"id":19550,"kind":"organization","name":"MAINSAIL GP III, LLC","position":1,"cik":"0001883360","reported_name":"MAINSAIL GP III, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19551,"kind":"organization","name":"Mainsail Partners III, L.P.","position":2,"cik":"0001543760","reported_name":"Mainsail Partners III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19552,"kind":"organization","name":"Mainsail Co-Investors III, L.P.","position":3,"cik":"0001570211","reported_name":"Mainsail Co-Investors III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19553,"kind":"organization","name":"MAINSAIL INCENTIVE PROGRAM, LLC","position":4,"cik":"0001883293","reported_name":"MAINSAIL INCENTIVE PROGRAM, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19554,"kind":"organization","name":"MAINSAIL MANAGEMENT COMPANY, LLC","position":5,"cik":"0001883367","reported_name":"MAINSAIL MANAGEMENT COMPANY, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"LLC Units","published_at":"2023-12-30T00:08:43.000Z","date":"2023-12-27","kind":"exercise","planned":true,"acquired":false,"shares":24221,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were     acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 23,651 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 47 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 523 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"kind","element":"transactionCoding","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were     acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"shares","element":"transactionShares","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 23,651 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 47 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 523 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were     acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were     acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were     acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Consists of (i) 31,167,169 shares of Class B common stock (and associated LLC Units) held by MP III, (ii) 61,959 shares of Class B common stock (and associated LLC Units) held by MIP, and (iii) 689,056 shares of Class B common stock (and associated LLC Units) held by MCOI."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Consists of (i) 31,167,169 shares of Class B common stock (and associated LLC Units) held by MP III, (ii) 61,959 shares of Class B common stock (and associated LLC Units) held by MIP, and (iii) 689,056 shares of Class B common stock (and associated LLC Units) held by MCOI."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."}],"balance_after":31918184,"derivative":{"underlying":"Class A Common Stock","underlying_shares":24221},"source":{"system":"sec-edgar","filing":"0000950170-23-073948","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1883293/000095017023073948/ownership.xml","form_type":"4"}},{"id":1698078,"issuer":{"id":6567,"kind":"organization","name":"Brilliant Earth Group, Inc."},"owners":[{"id":19550,"kind":"organization","name":"MAINSAIL GP III, LLC","position":1,"cik":"0001883360","reported_name":"MAINSAIL GP III, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19551,"kind":"organization","name":"Mainsail Partners III, L.P.","position":2,"cik":"0001543760","reported_name":"Mainsail Partners III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19552,"kind":"organization","name":"Mainsail Co-Investors III, L.P.","position":3,"cik":"0001570211","reported_name":"Mainsail Co-Investors III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19553,"kind":"organization","name":"MAINSAIL INCENTIVE PROGRAM, LLC","position":4,"cik":"0001883293","reported_name":"MAINSAIL INCENTIVE PROGRAM, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19554,"kind":"organization","name":"MAINSAIL MANAGEMENT COMPANY, LLC","position":5,"cik":"0001883367","reported_name":"MAINSAIL MANAGEMENT COMPANY, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2023-12-30T00:08:43.000Z","date":"2023-12-29","kind":"sale","planned":true,"acquired":false,"shares":8222,"price":3.4618,"value":28462.9196,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."},{"field":"shares","element":"transactionShares","label":"F9","text":"Represents the LLC Units and shares of Class B common stock exchanged for shares of Class A common stock including (i) 8,029  LLC Units and shares of Class B common stock exchanged by MP III, (ii) 16 LLC Units and shares of Class B common stock exchanged by MIP, and (iii) 177 LLC Units and shares of Class B common stock exchanged by MCOI."},{"field":"price","element":"transactionPricePerShare","label":"F11","text":"This sale of shares of Class A common stock was executed pursuant to a Rule 10b5-1 plan that was entered into by the reporting persons during an open trading window. This transaction was executed in multiple trades at prices ranging from $3.44 to $3.50, inclusive. The reported price reflects the weighted average sale price. The reporting persons hereby undertake to provide upon request to the United States Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transaction was affected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000950170-23-073948","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1883293/000095017023073948/ownership.xml","form_type":"4"}},{"id":1698077,"issuer":{"id":6567,"kind":"organization","name":"Brilliant Earth Group, Inc."},"owners":[{"id":19550,"kind":"organization","name":"MAINSAIL GP III, LLC","position":1,"cik":"0001883360","reported_name":"MAINSAIL GP III, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19551,"kind":"organization","name":"Mainsail Partners III, L.P.","position":2,"cik":"0001543760","reported_name":"Mainsail Partners III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19552,"kind":"organization","name":"Mainsail Co-Investors III, L.P.","position":3,"cik":"0001570211","reported_name":"Mainsail Co-Investors III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19553,"kind":"organization","name":"MAINSAIL INCENTIVE PROGRAM, LLC","position":4,"cik":"0001883293","reported_name":"MAINSAIL INCENTIVE PROGRAM, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19554,"kind":"organization","name":"MAINSAIL MANAGEMENT COMPANY, LLC","position":5,"cik":"0001883367","reported_name":"MAINSAIL MANAGEMENT COMPANY, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2023-12-30T00:08:43.000Z","date":"2023-12-29","kind":"exercise","planned":true,"acquired":true,"shares":8222,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F9","text":"Represents the LLC Units and shares of Class B common stock exchanged for shares of Class A common stock including (i) 8,029  LLC Units and shares of Class B common stock exchanged by MP III, (ii) 16 LLC Units and shares of Class B common stock exchanged by MIP, and (iii) 177 LLC Units and shares of Class B common stock exchanged by MCOI."},{"field":"shares","element":"transactionShares","label":"F9","text":"Represents the LLC Units and shares of Class B common stock exchanged for shares of Class A common stock including (i) 8,029  LLC Units and shares of Class B common stock exchanged by MP III, (ii) 16 LLC Units and shares of Class B common stock exchanged by MIP, and (iii) 177 LLC Units and shares of Class B common stock exchanged by MCOI."},{"field":"price","element":"transactionPricePerShare","label":"F9","text":"Represents the LLC Units and shares of Class B common stock exchanged for shares of Class A common stock including (i) 8,029  LLC Units and shares of Class B common stock exchanged by MP III, (ii) 16 LLC Units and shares of Class B common stock exchanged by MIP, and (iii) 177 LLC Units and shares of Class B common stock exchanged by MCOI."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."}],"balance_after":8222,"source":{"system":"sec-edgar","filing":"0000950170-23-073948","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1883293/000095017023073948/ownership.xml","form_type":"4"}},{"id":1698076,"issuer":{"id":6567,"kind":"organization","name":"Brilliant Earth Group, Inc."},"owners":[{"id":19550,"kind":"organization","name":"MAINSAIL GP III, LLC","position":1,"cik":"0001883360","reported_name":"MAINSAIL GP III, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19551,"kind":"organization","name":"Mainsail Partners III, L.P.","position":2,"cik":"0001543760","reported_name":"Mainsail Partners III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19552,"kind":"organization","name":"Mainsail Co-Investors III, L.P.","position":3,"cik":"0001570211","reported_name":"Mainsail Co-Investors III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19553,"kind":"organization","name":"MAINSAIL INCENTIVE PROGRAM, LLC","position":4,"cik":"0001883293","reported_name":"MAINSAIL INCENTIVE PROGRAM, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19554,"kind":"organization","name":"MAINSAIL MANAGEMENT COMPANY, LLC","position":5,"cik":"0001883367","reported_name":"MAINSAIL MANAGEMENT COMPANY, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2023-12-30T00:08:43.000Z","date":"2023-12-29","kind":"exercise","planned":true,"acquired":false,"shares":8222,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were     acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"kind","element":"transactionCoding","label":"F9","text":"Represents the LLC Units and shares of Class B common stock exchanged for shares of Class A common stock including (i) 8,029  LLC Units and shares of Class B common stock exchanged by MP III, (ii) 16 LLC Units and shares of Class B common stock exchanged by MIP, and (iii) 177 LLC Units and shares of Class B common stock exchanged by MCOI."},{"field":"shares","element":"transactionShares","label":"F9","text":"Represents the LLC Units and shares of Class B common stock exchanged for shares of Class A common stock including (i) 8,029  LLC Units and shares of Class B common stock exchanged by MP III, (ii) 16 LLC Units and shares of Class B common stock exchanged by MIP, and (iii) 177 LLC Units and shares of Class B common stock exchanged by MCOI."},{"field":"price","element":"transactionPricePerShare","label":"F9","text":"Represents the LLC Units and shares of Class B common stock exchanged for shares of Class A common stock including (i) 8,029  LLC Units and shares of Class B common stock exchanged by MP III, (ii) 16 LLC Units and shares of Class B common stock exchanged by MIP, and (iii) 177 LLC Units and shares of Class B common stock exchanged by MCOI."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F10","text":"Consists of (i) 31,150,165  shares of Class B common stock (and associated LLC Units) held by MP III, (ii) 61,925 shares of Class B common stock (and associated LLC Units) held by MIP, and (iii) 688,681 shares of Class B common stock (and associated LLC Units) held by MCOI."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F10","text":"Consists of (i) 31,150,165  shares of Class B common stock (and associated LLC Units) held by MP III, (ii) 61,925 shares of Class B common stock (and associated LLC Units) held by MIP, and (iii) 688,681 shares of Class B common stock (and associated LLC Units) held by MCOI."}],"balance_after":31900771,"source":{"system":"sec-edgar","filing":"0000950170-23-073948","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1883293/000095017023073948/ownership.xml","form_type":"4"}},{"id":1698075,"issuer":{"id":6567,"kind":"organization","name":"Brilliant Earth Group, Inc."},"owners":[{"id":19550,"kind":"organization","name":"MAINSAIL GP III, LLC","position":1,"cik":"0001883360","reported_name":"MAINSAIL GP III, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19551,"kind":"organization","name":"Mainsail Partners III, L.P.","position":2,"cik":"0001543760","reported_name":"Mainsail Partners III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19552,"kind":"organization","name":"Mainsail Co-Investors III, L.P.","position":3,"cik":"0001570211","reported_name":"Mainsail Co-Investors III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19553,"kind":"organization","name":"MAINSAIL INCENTIVE PROGRAM, LLC","position":4,"cik":"0001883293","reported_name":"MAINSAIL INCENTIVE PROGRAM, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19554,"kind":"organization","name":"MAINSAIL MANAGEMENT COMPANY, LLC","position":5,"cik":"0001883367","reported_name":"MAINSAIL MANAGEMENT COMPANY, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2023-12-30T00:08:43.000Z","date":"2023-12-28","kind":"sale","planned":true,"acquired":false,"shares":9191,"price":3.5211,"value":32362.4301,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."},{"field":"shares","element":"transactionShares","label":"F6","text":"Represents the LLC Units and shares of Class B common stock exchanged for shares of Class A common stock including (i) 8,975 LLC Units and shares of Class B common stock exchanged by MP III, (ii) 18 LLC Units and shares of Class B common stock exchanged by MIP, and (iii) 198 LLC Units and shares of Class B common stock exchanged by MCOI."},{"field":"price","element":"transactionPricePerShare","label":"F8","text":"This sale of shares of Class A common stock was executed pursuant to a Rule 10b5-1 plan that was entered into by the reporting persons during an open trading window. This transaction was executed in multiple trades at prices ranging from $3.43 to $3.62, inclusive. The reported price reflects the weighted average sale price. The reporting persons hereby undertake to provide upon request to the United States Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transaction was affected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000950170-23-073948","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1883293/000095017023073948/ownership.xml","form_type":"4"}},{"id":1698074,"issuer":{"id":6567,"kind":"organization","name":"Brilliant Earth Group, Inc."},"owners":[{"id":19550,"kind":"organization","name":"MAINSAIL GP III, LLC","position":1,"cik":"0001883360","reported_name":"MAINSAIL GP III, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19551,"kind":"organization","name":"Mainsail Partners III, L.P.","position":2,"cik":"0001543760","reported_name":"Mainsail Partners III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19552,"kind":"organization","name":"Mainsail Co-Investors III, L.P.","position":3,"cik":"0001570211","reported_name":"Mainsail Co-Investors III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19553,"kind":"organization","name":"MAINSAIL INCENTIVE PROGRAM, LLC","position":4,"cik":"0001883293","reported_name":"MAINSAIL INCENTIVE PROGRAM, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19554,"kind":"organization","name":"MAINSAIL MANAGEMENT COMPANY, LLC","position":5,"cik":"0001883367","reported_name":"MAINSAIL MANAGEMENT COMPANY, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2023-12-30T00:08:43.000Z","date":"2023-12-28","kind":"exercise","planned":true,"acquired":true,"shares":9191,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F6","text":"Represents the LLC Units and shares of Class B common stock exchanged for shares of Class A common stock including (i) 8,975 LLC Units and shares of Class B common stock exchanged by MP III, (ii) 18 LLC Units and shares of Class B common stock exchanged by MIP, and (iii) 198 LLC Units and shares of Class B common stock exchanged by MCOI."},{"field":"shares","element":"transactionShares","label":"F6","text":"Represents the LLC Units and shares of Class B common stock exchanged for shares of Class A common stock including (i) 8,975 LLC Units and shares of Class B common stock exchanged by MP III, (ii) 18 LLC Units and shares of Class B common stock exchanged by MIP, and (iii) 198 LLC Units and shares of Class B common stock exchanged by MCOI."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Represents the LLC Units and shares of Class B common stock exchanged for shares of Class A common stock including (i) 8,975 LLC Units and shares of Class B common stock exchanged by MP III, (ii) 18 LLC Units and shares of Class B common stock exchanged by MIP, and (iii) 198 LLC Units and shares of Class B common stock exchanged by MCOI."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."}],"balance_after":9191,"source":{"system":"sec-edgar","filing":"0000950170-23-073948","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1883293/000095017023073948/ownership.xml","form_type":"4"}},{"id":1698073,"issuer":{"id":6567,"kind":"organization","name":"Brilliant Earth Group, Inc."},"owners":[{"id":19550,"kind":"organization","name":"MAINSAIL GP III, LLC","position":1,"cik":"0001883360","reported_name":"MAINSAIL GP III, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19551,"kind":"organization","name":"Mainsail Partners III, L.P.","position":2,"cik":"0001543760","reported_name":"Mainsail Partners III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19552,"kind":"organization","name":"Mainsail Co-Investors III, L.P.","position":3,"cik":"0001570211","reported_name":"Mainsail Co-Investors III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19553,"kind":"organization","name":"MAINSAIL INCENTIVE PROGRAM, LLC","position":4,"cik":"0001883293","reported_name":"MAINSAIL INCENTIVE PROGRAM, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19554,"kind":"organization","name":"MAINSAIL MANAGEMENT COMPANY, LLC","position":5,"cik":"0001883367","reported_name":"MAINSAIL MANAGEMENT COMPANY, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2023-12-30T00:08:43.000Z","date":"2023-12-28","kind":"exercise","planned":true,"acquired":false,"shares":9191,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were     acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"kind","element":"transactionCoding","label":"F6","text":"Represents the LLC Units and shares of Class B common stock exchanged for shares of Class A common stock including (i) 8,975 LLC Units and shares of Class B common stock exchanged by MP III, (ii) 18 LLC Units and shares of Class B common stock exchanged by MIP, and (iii) 198 LLC Units and shares of Class B common stock exchanged by MCOI."},{"field":"shares","element":"transactionShares","label":"F6","text":"Represents the LLC Units and shares of Class B common stock exchanged for shares of Class A common stock including (i) 8,975 LLC Units and shares of Class B common stock exchanged by MP III, (ii) 18 LLC Units and shares of Class B common stock exchanged by MIP, and (iii) 198 LLC Units and shares of Class B common stock exchanged by MCOI."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Represents the LLC Units and shares of Class B common stock exchanged for shares of Class A common stock including (i) 8,975 LLC Units and shares of Class B common stock exchanged by MP III, (ii) 18 LLC Units and shares of Class B common stock exchanged by MIP, and (iii) 198 LLC Units and shares of Class B common stock exchanged by MCOI."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F7","text":"Consists of (i) 31,158,194 shares of Class B common stock (and associated LLC Units) held by MP III, (ii) 61,941 shares of Class B common stock (and associated LLC Units) held by MIP, and (iii) 688,858 shares of Class B common stock (and associated LLC Units) held by MCOI."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"Consists of (i) 31,158,194 shares of Class B common stock (and associated LLC Units) held by MP III, (ii) 61,941 shares of Class B common stock (and associated LLC Units) held by MIP, and (iii) 688,858 shares of Class B common stock (and associated LLC Units) held by MCOI."}],"balance_after":31908993,"source":{"system":"sec-edgar","filing":"0000950170-23-073948","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1883293/000095017023073948/ownership.xml","form_type":"4"}},{"id":1698072,"issuer":{"id":6567,"kind":"organization","name":"Brilliant Earth Group, Inc."},"owners":[{"id":19550,"kind":"organization","name":"MAINSAIL GP III, LLC","position":1,"cik":"0001883360","reported_name":"MAINSAIL GP III, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19551,"kind":"organization","name":"Mainsail Partners III, L.P.","position":2,"cik":"0001543760","reported_name":"Mainsail Partners III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19552,"kind":"organization","name":"Mainsail Co-Investors III, L.P.","position":3,"cik":"0001570211","reported_name":"Mainsail Co-Investors III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19553,"kind":"organization","name":"MAINSAIL INCENTIVE PROGRAM, LLC","position":4,"cik":"0001883293","reported_name":"MAINSAIL INCENTIVE PROGRAM, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19554,"kind":"organization","name":"MAINSAIL MANAGEMENT COMPANY, LLC","position":5,"cik":"0001883367","reported_name":"MAINSAIL MANAGEMENT COMPANY, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2023-12-30T00:08:43.000Z","date":"2023-12-27","kind":"sale","planned":true,"acquired":false,"shares":24221,"price":3.5004,"value":84783.1884,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."},{"field":"shares","element":"transactionShares","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 23,651 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 47 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 523 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"This sale of shares of Class A common stock was executed pursuant to a Rule 10b5-1 plan that was entered into by the reporting persons during an open trading window. This transaction was executed in multiple trades at prices ranging from $3.43 to $3.60, inclusive. The reported price reflects the weighted average sale price. The reporting persons hereby undertake to provide upon request to the United States Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transaction was affected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000950170-23-073948","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1883293/000095017023073948/ownership.xml","form_type":"4"}},{"id":1698071,"issuer":{"id":6567,"kind":"organization","name":"Brilliant Earth Group, Inc."},"owners":[{"id":19550,"kind":"organization","name":"MAINSAIL GP III, LLC","position":1,"cik":"0001883360","reported_name":"MAINSAIL GP III, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19551,"kind":"organization","name":"Mainsail Partners III, L.P.","position":2,"cik":"0001543760","reported_name":"Mainsail Partners III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19552,"kind":"organization","name":"Mainsail Co-Investors III, L.P.","position":3,"cik":"0001570211","reported_name":"Mainsail Co-Investors III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19553,"kind":"organization","name":"MAINSAIL INCENTIVE PROGRAM, LLC","position":4,"cik":"0001883293","reported_name":"MAINSAIL INCENTIVE PROGRAM, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19554,"kind":"organization","name":"MAINSAIL MANAGEMENT COMPANY, LLC","position":5,"cik":"0001883367","reported_name":"MAINSAIL MANAGEMENT COMPANY, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2023-12-30T00:08:43.000Z","date":"2023-12-27","kind":"exercise","planned":true,"acquired":true,"shares":24221,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 23,651 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 47 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 523 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"shares","element":"transactionShares","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 23,651 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 47 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 523 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 23,651 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 47 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 523 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."}],"balance_after":24221,"source":{"system":"sec-edgar","filing":"0000950170-23-073948","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1883293/000095017023073948/ownership.xml","form_type":"4"}},{"id":1698070,"issuer":{"id":6567,"kind":"organization","name":"Brilliant Earth Group, Inc."},"owners":[{"id":19550,"kind":"organization","name":"MAINSAIL GP III, LLC","position":1,"cik":"0001883360","reported_name":"MAINSAIL GP III, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19551,"kind":"organization","name":"Mainsail Partners III, L.P.","position":2,"cik":"0001543760","reported_name":"Mainsail Partners III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19552,"kind":"organization","name":"Mainsail Co-Investors III, L.P.","position":3,"cik":"0001570211","reported_name":"Mainsail Co-Investors III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19553,"kind":"organization","name":"MAINSAIL INCENTIVE PROGRAM, LLC","position":4,"cik":"0001883293","reported_name":"MAINSAIL INCENTIVE PROGRAM, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19554,"kind":"organization","name":"MAINSAIL MANAGEMENT COMPANY, LLC","position":5,"cik":"0001883367","reported_name":"MAINSAIL MANAGEMENT COMPANY, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2023-12-30T00:08:43.000Z","date":"2023-12-27","kind":"exercise","planned":true,"acquired":false,"shares":24221,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 23,651 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 47 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 523 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"kind","element":"transactionCoding","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were     acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"shares","element":"transactionShares","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 23,651 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 47 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 523 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 23,651 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 47 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 523 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Consists of (i) 31,167,169 shares of Class B common stock (and associated LLC Units) held by MP III, (ii) 61,959 shares of Class B common stock (and associated LLC Units) held by MIP, and (iii) 689,056 shares of Class B common stock (and associated LLC Units) held by MCOI."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Consists of (i) 31,167,169 shares of Class B common stock (and associated LLC Units) held by MP III, (ii) 61,959 shares of Class B common stock (and associated LLC Units) held by MIP, and (iii) 689,056 shares of Class B common stock (and associated LLC Units) held by MCOI."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."}],"balance_after":31918184,"source":{"system":"sec-edgar","filing":"0000950170-23-073948","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1883293/000095017023073948/ownership.xml","form_type":"4"}},{"id":1702413,"issuer":{"id":6567,"kind":"organization","name":"Brilliant Earth Group, Inc."},"owners":[{"id":19550,"kind":"organization","name":"MAINSAIL GP III, LLC","position":1,"cik":"0001883360","reported_name":"MAINSAIL GP III, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19551,"kind":"organization","name":"Mainsail Partners III, L.P.","position":2,"cik":"0001543760","reported_name":"Mainsail Partners III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19552,"kind":"organization","name":"Mainsail Co-Investors III, L.P.","position":3,"cik":"0001570211","reported_name":"Mainsail Co-Investors III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19553,"kind":"organization","name":"MAINSAIL INCENTIVE PROGRAM, LLC","position":4,"cik":"0001883293","reported_name":"MAINSAIL INCENTIVE PROGRAM, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19554,"kind":"organization","name":"MAINSAIL MANAGEMENT COMPANY, LLC","position":5,"cik":"0001883367","reported_name":"MAINSAIL MANAGEMENT COMPANY, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"LLC Units","published_at":"2023-12-22T01:54:14.000Z","date":"2023-12-21","kind":"exercise","planned":true,"acquired":false,"shares":8233,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"kind","element":"transactionCoding","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"kind","element":"transactionCoding","label":"F6","text":"Represents the LLC Units and shares of Class B common stock exchanged for shares of Class A common stock including (i) 8,039 LLC Units and shares of Class B common stock exchanged by MP III, (ii) 16 LLC Units and shares of Class B common stock exchanged by MIP, and (iii) 178 LLC Units and shares of Class B common stock exchanged by MCOI."},{"field":"shares","element":"transactionShares","label":"F6","text":"Represents the LLC Units and shares of Class B common stock exchanged for shares of Class A common stock including (i) 8,039 LLC Units and shares of Class B common stock exchanged by MP III, (ii) 16 LLC Units and shares of Class B common stock exchanged by MIP, and (iii) 178 LLC Units and shares of Class B common stock exchanged by MCOI."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F7","text":"Consists of (i) 31,190,820 shares of Class B common stock (and associated LLC Units) held by MP III, (ii) 62,006 shares of Class B common stock (and associated LLC Units) held by MIP, and (iii) 689,579 shares of Class B common stock (and associated LLC Units) held by MCOI."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"Consists of (i) 31,190,820 shares of Class B common stock (and associated LLC Units) held by MP III, (ii) 62,006 shares of Class B common stock (and associated LLC Units) held by MIP, and (iii) 689,579 shares of Class B common stock (and associated LLC Units) held by MCOI."}],"balance_after":31942405,"derivative":{"underlying":"Class A Common Stock","underlying_shares":8233},"source":{"system":"sec-edgar","filing":"0000950170-23-072390","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1883293/000095017023072390/ownership.xml","form_type":"4"}},{"id":1702412,"issuer":{"id":6567,"kind":"organization","name":"Brilliant Earth Group, Inc."},"owners":[{"id":19550,"kind":"organization","name":"MAINSAIL GP III, LLC","position":1,"cik":"0001883360","reported_name":"MAINSAIL GP III, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19551,"kind":"organization","name":"Mainsail Partners III, L.P.","position":2,"cik":"0001543760","reported_name":"Mainsail Partners III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19552,"kind":"organization","name":"Mainsail Co-Investors III, L.P.","position":3,"cik":"0001570211","reported_name":"Mainsail Co-Investors III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19553,"kind":"organization","name":"MAINSAIL INCENTIVE PROGRAM, LLC","position":4,"cik":"0001883293","reported_name":"MAINSAIL INCENTIVE PROGRAM, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19554,"kind":"organization","name":"MAINSAIL MANAGEMENT COMPANY, LLC","position":5,"cik":"0001883367","reported_name":"MAINSAIL MANAGEMENT COMPANY, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"LLC Units","published_at":"2023-12-22T01:54:14.000Z","date":"2023-12-19","kind":"exercise","planned":true,"acquired":false,"shares":15133,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 14,777 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 29 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 327 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"kind","element":"transactionCoding","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"shares","element":"transactionShares","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 14,777 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 29 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 327 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Consists of (i) 31,198,859 shares of Class B common stock (and associated LLC Units) held by MP III, (ii) 62,022 shares of Class B common stock (and associated LLC Units) held by MIP, and (iii) 689,757 shares of Class B common stock (and associated LLC Units) held by MCOI."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Consists of (i) 31,198,859 shares of Class B common stock (and associated LLC Units) held by MP III, (ii) 62,022 shares of Class B common stock (and associated LLC Units) held by MIP, and (iii) 689,757 shares of Class B common stock (and associated LLC Units) held by MCOI."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."}],"balance_after":31950638,"derivative":{"underlying":"Class A Common Stock","underlying_shares":15133},"source":{"system":"sec-edgar","filing":"0000950170-23-072390","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1883293/000095017023072390/ownership.xml","form_type":"4"}},{"id":1702411,"issuer":{"id":6567,"kind":"organization","name":"Brilliant Earth Group, Inc."},"owners":[{"id":19550,"kind":"organization","name":"MAINSAIL GP III, LLC","position":1,"cik":"0001883360","reported_name":"MAINSAIL GP III, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19551,"kind":"organization","name":"Mainsail Partners III, L.P.","position":2,"cik":"0001543760","reported_name":"Mainsail Partners III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19552,"kind":"organization","name":"Mainsail Co-Investors III, L.P.","position":3,"cik":"0001570211","reported_name":"Mainsail Co-Investors III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19553,"kind":"organization","name":"MAINSAIL INCENTIVE PROGRAM, LLC","position":4,"cik":"0001883293","reported_name":"MAINSAIL INCENTIVE PROGRAM, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19554,"kind":"organization","name":"MAINSAIL MANAGEMENT COMPANY, LLC","position":5,"cik":"0001883367","reported_name":"MAINSAIL MANAGEMENT COMPANY, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2023-12-22T01:54:14.000Z","date":"2023-12-21","kind":"sale","planned":true,"acquired":false,"shares":8233,"price":3.5125,"value":28918.4125,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."},{"field":"shares","element":"transactionShares","label":"F6","text":"Represents the LLC Units and shares of Class B common stock exchanged for shares of Class A common stock including (i) 8,039 LLC Units and shares of Class B common stock exchanged by MP III, (ii) 16 LLC Units and shares of Class B common stock exchanged by MIP, and (iii) 178 LLC Units and shares of Class B common stock exchanged by MCOI."},{"field":"price","element":"transactionPricePerShare","label":"F8","text":"This sale of shares of Class A common stock was executed pursuant to a Rule 10b5-1 plan that was entered into by the reporting persons during an open trading window. This transaction was executed in multiple trades at prices ranging from $3.47 to $3.55, inclusive. The reported price reflects the weighted average sale price. The reporting persons hereby undertake to provide upon request to the United States Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transaction was affected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000950170-23-072390","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1883293/000095017023072390/ownership.xml","form_type":"4"}},{"id":1702410,"issuer":{"id":6567,"kind":"organization","name":"Brilliant Earth Group, Inc."},"owners":[{"id":19550,"kind":"organization","name":"MAINSAIL GP III, LLC","position":1,"cik":"0001883360","reported_name":"MAINSAIL GP III, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19551,"kind":"organization","name":"Mainsail Partners III, L.P.","position":2,"cik":"0001543760","reported_name":"Mainsail Partners III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19552,"kind":"organization","name":"Mainsail Co-Investors III, L.P.","position":3,"cik":"0001570211","reported_name":"Mainsail Co-Investors III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19553,"kind":"organization","name":"MAINSAIL INCENTIVE PROGRAM, LLC","position":4,"cik":"0001883293","reported_name":"MAINSAIL INCENTIVE PROGRAM, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19554,"kind":"organization","name":"MAINSAIL MANAGEMENT COMPANY, LLC","position":5,"cik":"0001883367","reported_name":"MAINSAIL MANAGEMENT COMPANY, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2023-12-22T01:54:14.000Z","date":"2023-12-21","kind":"exercise","planned":true,"acquired":true,"shares":8233,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F6","text":"Represents the LLC Units and shares of Class B common stock exchanged for shares of Class A common stock including (i) 8,039 LLC Units and shares of Class B common stock exchanged by MP III, (ii) 16 LLC Units and shares of Class B common stock exchanged by MIP, and (iii) 178 LLC Units and shares of Class B common stock exchanged by MCOI."},{"field":"shares","element":"transactionShares","label":"F6","text":"Represents the LLC Units and shares of Class B common stock exchanged for shares of Class A common stock including (i) 8,039 LLC Units and shares of Class B common stock exchanged by MP III, (ii) 16 LLC Units and shares of Class B common stock exchanged by MIP, and (iii) 178 LLC Units and shares of Class B common stock exchanged by MCOI."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Represents the LLC Units and shares of Class B common stock exchanged for shares of Class A common stock including (i) 8,039 LLC Units and shares of Class B common stock exchanged by MP III, (ii) 16 LLC Units and shares of Class B common stock exchanged by MIP, and (iii) 178 LLC Units and shares of Class B common stock exchanged by MCOI."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."}],"balance_after":8233,"source":{"system":"sec-edgar","filing":"0000950170-23-072390","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1883293/000095017023072390/ownership.xml","form_type":"4"}},{"id":1702409,"issuer":{"id":6567,"kind":"organization","name":"Brilliant Earth Group, Inc."},"owners":[{"id":19550,"kind":"organization","name":"MAINSAIL GP III, LLC","position":1,"cik":"0001883360","reported_name":"MAINSAIL GP III, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19551,"kind":"organization","name":"Mainsail Partners III, L.P.","position":2,"cik":"0001543760","reported_name":"Mainsail Partners III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19552,"kind":"organization","name":"Mainsail Co-Investors III, L.P.","position":3,"cik":"0001570211","reported_name":"Mainsail Co-Investors III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19553,"kind":"organization","name":"MAINSAIL INCENTIVE PROGRAM, LLC","position":4,"cik":"0001883293","reported_name":"MAINSAIL INCENTIVE PROGRAM, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19554,"kind":"organization","name":"MAINSAIL MANAGEMENT COMPANY, LLC","position":5,"cik":"0001883367","reported_name":"MAINSAIL MANAGEMENT COMPANY, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2023-12-22T01:54:14.000Z","date":"2023-12-21","kind":"exercise","planned":true,"acquired":false,"shares":8233,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"kind","element":"transactionCoding","label":"F6","text":"Represents the LLC Units and shares of Class B common stock exchanged for shares of Class A common stock including (i) 8,039 LLC Units and shares of Class B common stock exchanged by MP III, (ii) 16 LLC Units and shares of Class B common stock exchanged by MIP, and (iii) 178 LLC Units and shares of Class B common stock exchanged by MCOI."},{"field":"shares","element":"transactionShares","label":"F6","text":"Represents the LLC Units and shares of Class B common stock exchanged for shares of Class A common stock including (i) 8,039 LLC Units and shares of Class B common stock exchanged by MP III, (ii) 16 LLC Units and shares of Class B common stock exchanged by MIP, and (iii) 178 LLC Units and shares of Class B common stock exchanged by MCOI."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Represents the LLC Units and shares of Class B common stock exchanged for shares of Class A common stock including (i) 8,039 LLC Units and shares of Class B common stock exchanged by MP III, (ii) 16 LLC Units and shares of Class B common stock exchanged by MIP, and (iii) 178 LLC Units and shares of Class B common stock exchanged by MCOI."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F7","text":"Consists of (i) 31,190,820 shares of Class B common stock (and associated LLC Units) held by MP III, (ii) 62,006 shares of Class B common stock (and associated LLC Units) held by MIP, and (iii) 689,579 shares of Class B common stock (and associated LLC Units) held by MCOI."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"Consists of (i) 31,190,820 shares of Class B common stock (and associated LLC Units) held by MP III, (ii) 62,006 shares of Class B common stock (and associated LLC Units) held by MIP, and (iii) 689,579 shares of Class B common stock (and associated LLC Units) held by MCOI."}],"balance_after":31942405,"source":{"system":"sec-edgar","filing":"0000950170-23-072390","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1883293/000095017023072390/ownership.xml","form_type":"4"}},{"id":1702408,"issuer":{"id":6567,"kind":"organization","name":"Brilliant Earth Group, Inc."},"owners":[{"id":19550,"kind":"organization","name":"MAINSAIL GP III, LLC","position":1,"cik":"0001883360","reported_name":"MAINSAIL GP III, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19551,"kind":"organization","name":"Mainsail Partners III, L.P.","position":2,"cik":"0001543760","reported_name":"Mainsail Partners III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19552,"kind":"organization","name":"Mainsail Co-Investors III, L.P.","position":3,"cik":"0001570211","reported_name":"Mainsail Co-Investors III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19553,"kind":"organization","name":"MAINSAIL INCENTIVE PROGRAM, LLC","position":4,"cik":"0001883293","reported_name":"MAINSAIL INCENTIVE PROGRAM, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19554,"kind":"organization","name":"MAINSAIL MANAGEMENT COMPANY, LLC","position":5,"cik":"0001883367","reported_name":"MAINSAIL MANAGEMENT COMPANY, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2023-12-22T01:54:14.000Z","date":"2023-12-19","kind":"sale","planned":true,"acquired":false,"shares":15133,"price":3.5058,"value":53053.2714,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."},{"field":"shares","element":"transactionShares","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 14,777 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 29 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 327 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"This sale of shares of Class A common stock was executed pursuant to a Rule 10b5-1 plan that was entered into by the reporting persons during an open trading window. This transaction was executed in multiple trades at prices ranging from $3.50 to $3.58, inclusive. The reported price reflects the weighted average sale price. The reporting persons hereby undertake to provide upon request to the United States Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transaction was affected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000950170-23-072390","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1883293/000095017023072390/ownership.xml","form_type":"4"}},{"id":1702407,"issuer":{"id":6567,"kind":"organization","name":"Brilliant Earth Group, Inc."},"owners":[{"id":19550,"kind":"organization","name":"MAINSAIL GP III, LLC","position":1,"cik":"0001883360","reported_name":"MAINSAIL GP III, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19551,"kind":"organization","name":"Mainsail Partners III, L.P.","position":2,"cik":"0001543760","reported_name":"Mainsail Partners III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19552,"kind":"organization","name":"Mainsail Co-Investors III, L.P.","position":3,"cik":"0001570211","reported_name":"Mainsail Co-Investors III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19553,"kind":"organization","name":"MAINSAIL INCENTIVE PROGRAM, LLC","position":4,"cik":"0001883293","reported_name":"MAINSAIL INCENTIVE PROGRAM, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19554,"kind":"organization","name":"MAINSAIL MANAGEMENT COMPANY, LLC","position":5,"cik":"0001883367","reported_name":"MAINSAIL MANAGEMENT COMPANY, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2023-12-22T01:54:14.000Z","date":"2023-12-19","kind":"exercise","planned":true,"acquired":true,"shares":15133,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 14,777 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 29 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 327 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"shares","element":"transactionShares","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 14,777 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 29 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 327 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 14,777 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 29 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 327 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."}],"balance_after":15133,"source":{"system":"sec-edgar","filing":"0000950170-23-072390","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1883293/000095017023072390/ownership.xml","form_type":"4"}},{"id":1702406,"issuer":{"id":6567,"kind":"organization","name":"Brilliant Earth Group, Inc."},"owners":[{"id":19550,"kind":"organization","name":"MAINSAIL GP III, LLC","position":1,"cik":"0001883360","reported_name":"MAINSAIL GP III, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19551,"kind":"organization","name":"Mainsail Partners III, L.P.","position":2,"cik":"0001543760","reported_name":"Mainsail Partners III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19552,"kind":"organization","name":"Mainsail Co-Investors III, L.P.","position":3,"cik":"0001570211","reported_name":"Mainsail Co-Investors III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19553,"kind":"organization","name":"MAINSAIL INCENTIVE PROGRAM, LLC","position":4,"cik":"0001883293","reported_name":"MAINSAIL INCENTIVE PROGRAM, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19554,"kind":"organization","name":"MAINSAIL MANAGEMENT COMPANY, LLC","position":5,"cik":"0001883367","reported_name":"MAINSAIL MANAGEMENT COMPANY, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2023-12-22T01:54:14.000Z","date":"2023-12-19","kind":"exercise","planned":true,"acquired":false,"shares":15133,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 14,777 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 29 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 327 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"kind","element":"transactionCoding","label":"F2","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. The reported LLC Units, which were acquired by the reporting persons prior to the Issuer's initial public offering, do not expire."},{"field":"shares","element":"transactionShares","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 14,777 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 29 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 327 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents common units of Brilliant Earth, LLC (the \"LLC Units\") and shares of Class B common stock exchanged for shares of Class A common stock including (i) 14,777 LLC Units and shares of Class B common stock exchanged by Mainsail Partners III, L.P. (\"MP III\"), (ii) 29 LLC Units and shares of Class B common stock exchanged by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 327 LLC Units and shares of Class B common stock exchanged by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Consists of (i) 31,198,859 shares of Class B common stock (and associated LLC Units) held by MP III, (ii) 62,022 shares of Class B common stock (and associated LLC Units) held by MIP, and (iii) 689,757 shares of Class B common stock (and associated LLC Units) held by MCOI."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Consists of (i) 31,198,859 shares of Class B common stock (and associated LLC Units) held by MP III, (ii) 62,022 shares of Class B common stock (and associated LLC Units) held by MIP, and (iii) 689,757 shares of Class B common stock (and associated LLC Units) held by MCOI."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP, and Gavin Turner is the sole Manager of MMC. Mr. Turner has separately reported the transactions and reported securities reflected in this statement. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."}],"balance_after":31950638,"source":{"system":"sec-edgar","filing":"0000950170-23-072390","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1883293/000095017023072390/ownership.xml","form_type":"4"}},{"id":2557863,"issuer":{"id":6567,"kind":"organization","name":"Brilliant Earth Group, Inc."},"owners":[{"id":19550,"kind":"organization","name":"MAINSAIL GP III, LLC","position":1,"cik":"0001883360","reported_name":"MAINSAIL GP III, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19551,"kind":"organization","name":"Mainsail Partners III, L.P.","position":2,"cik":"0001543760","reported_name":"Mainsail Partners III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19552,"kind":"organization","name":"Mainsail Co-Investors III, L.P.","position":3,"cik":"0001570211","reported_name":"Mainsail Co-Investors III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19553,"kind":"organization","name":"MAINSAIL INCENTIVE PROGRAM, LLC","position":4,"cik":"0001883293","reported_name":"MAINSAIL INCENTIVE PROGRAM, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19554,"kind":"organization","name":"MAINSAIL MANAGEMENT COMPANY, LLC","position":5,"cik":"0001883367","reported_name":"MAINSAIL MANAGEMENT COMPANY, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"LLC Units","published_at":"2021-09-29T01:10:26.000Z","date":"2021-09-27","kind":"disposition_to_issuer","acquired":false,"shares":469824,"price":11.22,"value":5271425.28,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F5","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. LLC Units do not expire."},{"field":"kind","element":"transactionCoding","label":"F1","text":"On September 27, 2021, the Issuer used a portion of the net proceeds from the closing of its initial public offering (\"IPO\") of Class A common stock to redeem common units of Brilliant Earth LLC (the \"LLC Units\") from the reporting persons, at a price of $11.22 per LLC Unit (the \"Redemption\"). One share of the Issuer's Class B common stock for every LLC Unit redeemed was forfeited and canceled for no consideration in connection with the Redemption."},{"field":"shares","element":"transactionShares","label":"F2","text":"Consists of (i) 458,769 shares of Class B common stock forfeited by Mainsail Partners III, L.P. (\"MP III\"), (ii) 912 shares of Class B common stock forfeited by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 10,143 shares of Class B common stock forfeited by Mainsail Co-Investors III, L.P. (\"MCOI\"), in each case, in connection with the Redemption."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. LLC Units do not expire."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"LLC Units (together with one share of Class B common stock for every LLC Unit) are exchangeable for one share of the Issuer's Class A common stock. LLC Units do not expire."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Consists of (i) 31,213,636 shares of Class B common stock (and associated LLC Units) held by Mainsail Partners III, L.P. (\"MP III\"), (ii) 62,051 shares of Class B common stock (and associated LLC Units) held by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 690,084 shares of Class B common stock (and associated LLC Units) held by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP and Gavin Turner is sole Manager of MMC. Mr. Turner has separately reported the securities held by each of the foregoing on his Form 3 filed in his capacity as a director of the Issuer. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."}],"balance_after":31965771,"derivative":{"underlying":"Class A Common Stock","underlying_shares":469824},"source":{"system":"sec-edgar","filing":"0000899243-21-038114","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1883293/000089924321038114/doc4.xml","form_type":"4"}},{"id":2557862,"issuer":{"id":6567,"kind":"organization","name":"Brilliant Earth Group, Inc."},"owners":[{"id":19550,"kind":"organization","name":"MAINSAIL GP III, LLC","position":1,"cik":"0001883360","reported_name":"MAINSAIL GP III, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19551,"kind":"organization","name":"Mainsail Partners III, L.P.","position":2,"cik":"0001543760","reported_name":"Mainsail Partners III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19552,"kind":"organization","name":"Mainsail Co-Investors III, L.P.","position":3,"cik":"0001570211","reported_name":"Mainsail Co-Investors III, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19553,"kind":"organization","name":"MAINSAIL INCENTIVE PROGRAM, LLC","position":4,"cik":"0001883293","reported_name":"MAINSAIL INCENTIVE PROGRAM, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":19554,"kind":"organization","name":"MAINSAIL MANAGEMENT COMPANY, LLC","position":5,"cik":"0001883367","reported_name":"MAINSAIL MANAGEMENT COMPANY, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2021-09-29T01:10:26.000Z","date":"2021-09-27","kind":"disposition_to_issuer","acquired":false,"shares":469824,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On September 27, 2021, the Issuer used a portion of the net proceeds from the closing of its initial public offering (\"IPO\") of Class A common stock to redeem common units of Brilliant Earth LLC (the \"LLC Units\") from the reporting persons, at a price of $11.22 per LLC Unit (the \"Redemption\"). One share of the Issuer's Class B common stock for every LLC Unit redeemed was forfeited and canceled for no consideration in connection with the Redemption."},{"field":"shares","element":"transactionShares","label":"F2","text":"Consists of (i) 458,769 shares of Class B common stock forfeited by Mainsail Partners III, L.P. (\"MP III\"), (ii) 912 shares of Class B common stock forfeited by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 10,143 shares of Class B common stock forfeited by Mainsail Co-Investors III, L.P. (\"MCOI\"), in each case, in connection with the Redemption."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On September 27, 2021, the Issuer used a portion of the net proceeds from the closing of its initial public offering (\"IPO\") of Class A common stock to redeem common units of Brilliant Earth LLC (the \"LLC Units\") from the reporting persons, at a price of $11.22 per LLC Unit (the \"Redemption\"). One share of the Issuer's Class B common stock for every LLC Unit redeemed was forfeited and canceled for no consideration in connection with the Redemption."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Consists of (i) 31,213,636 shares of Class B common stock (and associated LLC Units) held by Mainsail Partners III, L.P. (\"MP III\"), (ii) 62,051 shares of Class B common stock (and associated LLC Units) held by Mainsail Incentive Program, LLC (\"MIP\"), and (iii) 690,084 shares of Class B common stock (and associated LLC Units) held by Mainsail Co-Investors III, L.P. (\"MCOI\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Mainsail GP III, LLC (\"GP III\") is the general partner of MP III. MCOI is a co-investment vehicle that invests alongside MP III. GP III is the general partner of MCOI. A three member investment committee of GP III acts by a majority vote, with Gavin Turner possessing a veto right, with respect to the voting and dispositive power of the securities held by MP III and MCOI. Mainsail Management Company, LLC (\"MMC\") is the managing member of MIP and Gavin Turner is sole Manager of MMC. Mr. Turner has separately reported the securities held by each of the foregoing on his Form 3 filed in his capacity as a director of the Issuer. The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein."}],"balance_after":31965771,"source":{"system":"sec-edgar","filing":"0000899243-21-038114","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1883293/000089924321038114/doc4.xml","form_type":"4"}}]}