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As of May 14, 2019, BCSF Holdings ceased to be the record owner of more than 10% of the Issuer's Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"As of May 16, 2019, shares of Common Stock are directly held by the following entities: (a) 1,713,234.83 by BCSF Holdings, whose general partner is BCSF Holdings Investors, L.P. (\"BCSF Holdings GP\"), (b) 7,293,065.48 by Bain Capital Distressed and Special Situations 2016 (F), L.P. (\"F Holdings\"), whose general partner is Bain Capital Distressed and Special Situations 2016 Investors (F), L.P. (\"F Holdings GP\"), and (c) 1,403,187.19 by Bain Capital Credit Holdings (MRF), L.P. (\"MRF Holdings\" and together with BCSF Holdings and F Holdings, the \"Funds\"), whose general partner is Bain Capital Credit Holdings Investors (MRF), LP (\"MRF Holdings GP\").  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As of May 14, 2019, BCSF Holdings ceased to be the record owner of more than 10% of the Issuer's Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"As of May 16, 2019, shares of Common Stock are directly held by the following entities: (a) 1,713,234.83 by BCSF Holdings, whose general partner is BCSF Holdings Investors, L.P. (\"BCSF Holdings GP\"), (b) 7,293,065.48 by Bain Capital Distressed and Special Situations 2016 (F), L.P. (\"F Holdings\"), whose general partner is Bain Capital Distressed and Special Situations 2016 Investors (F), L.P. (\"F Holdings GP\"), and (c) 1,403,187.19 by Bain Capital Credit Holdings (MRF), L.P. (\"MRF Holdings\" and together with BCSF Holdings and F Holdings, the \"Funds\"), whose general partner is Bain Capital Credit Holdings Investors (MRF), LP (\"MRF Holdings GP\").  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Bain Capital Credit Member, LLC (\"BCCM\") is the general partner of BCSF Holdings GP, F Holdings GP and MRF Holdings GP."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"As of July 17, 2018, BCCM may be deemed to share beneficial ownership of all 19,287,160.40 shares of common stock held of record by the Funds, but disclaims beneficial ownership of such shares, except to the extent of its respective pecuniary interest therein."}],"balance_after":19287160.4,"source":{"system":"sec-edgar","filing":"0001179110-18-009780","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1683647/000117911018009780/edgar.xml","form_type":"4"}},{"id":3961118,"issuer":{"id":5138,"kind":"organization","name":"Bain Capital Specialty Finance, Inc."},"owners":[{"id":75268,"kind":"organization","name":"BAIN CAPITAL CREDIT MEMBER, LLC","position":1,"cik":"0001309111","reported_name":"BAIN CAPITAL CREDIT MEMBER, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":112720,"kind":"organization","name":"Bain Capital Distressed & Special Situations 2016 (F), L.P.","position":2,"cik":"0001651587","reported_name":"Bain Capital Distressed & Special Situations 2016 (F), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":157510,"kind":"organization","name":"BCSF Holdings, L.P.","position":3,"cik":"0001683647","reported_name":"BCSF Holdings, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2018-04-18T12:39:43.000Z","date":"2018-04-17","kind":"purchase","acquired":true,"shares":2724568.06,"price":55526697,"value":151286265123497.8,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"As of April 17, 2018, shares of common stock of the issuer are directly held by the following entities: (a) 9,073,135.16 by BCSF Holdings, LP (\"BCSF Holdings\"), whose general partner is BCSF Holdings Investors, L.P. 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Bain Capital Credit Member, LLC (\"BCCM\") is the general partner of BCSF Holdings GP, F Holdings GP and MRF Holdings GP."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"As of April 17, 2018,, BCCM may be deemed to share beneficial ownership of all 16,527,920.10 shares of common stock held of record by the Funds, but disclaims beneficial ownership of such shares, except to the extent of its respective pecuniary interest therein."}],"balance_after":16527920.1,"source":{"system":"sec-edgar","filing":"0001179110-18-005724","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1683647/000117911018005724/edgar.xml","form_type":"4"}},{"id":4096346,"issuer":{"id":5138,"kind":"organization","name":"Bain Capital Specialty Finance, Inc."},"owners":[{"id":75268,"kind":"organization","name":"BAIN CAPITAL CREDIT MEMBER, LLC","position":1,"cik":"0001309111","reported_name":"BAIN CAPITAL CREDIT MEMBER, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":112720,"kind":"organization","name":"Bain Capital Distressed & Special Situations 2016 (F), L.P.","position":2,"cik":"0001651587","reported_name":"Bain Capital Distressed & Special Situations 2016 (F), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":157510,"kind":"organization","name":"BCSF Holdings, L.P.","position":3,"cik":"0001683647","reported_name":"BCSF Holdings, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2018-01-18T10:40:16.000Z","date":"2018-01-17","kind":"purchase","acquired":true,"shares":2615311.43,"price":53221587.7,"value":139191026634557.4,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"As of January 17, 2018, shares of common stock of the issuer are directly held by the following entities: (a) 7,459,411.29 by BCSF Holdings, LP (\"BCSF Holdings\"), whose general partner is BCSF Holdings Investors, L.P. (\"BCSF Holdings GP\"), (b) 5,221,493.27 by Bain Capital Distressed and Special Situations 2016 (F), L.P. (\"F Holdings\"), whose general partner is Bain Capital Distressed and Special Situations 2016 Investors (F), L.P. (\"F Holdings GP\"), and (c) 1,004,616.30 by Bain Capital Credit Holdings (MRF), L.P. (\"MRF Holdings\" and together with BCSF Holdings and F Holdings, the \"Funds\"), whose general partner is Bain Capital Credit Holdings Investors (MRF), LP (\"MRF Holdings GP\").  Bain Capital Credit Member, LLC (\"BCCM\") is the general partner of BCSF Holdings GP, F Holdings GP and MRF Holdings GP."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"As of January 17, 2018, BCCM may be deemed to share beneficial ownership of all 13,685,520.86  shares of common stock held of record by the Funds, but disclaims beneficial ownership of such shares, except to the extent of its respective pecuniary interest therein."}],"balance_after":13685520.86,"source":{"system":"sec-edgar","filing":"0001179110-18-000940","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1683647/000117911018000940/edgar.xml","form_type":"4"}},{"id":4271788,"issuer":{"id":5138,"kind":"organization","name":"Bain Capital Specialty Finance, Inc."},"owners":[{"id":75268,"kind":"organization","name":"BAIN CAPITAL CREDIT MEMBER, LLC","position":1,"cik":"0001309111","reported_name":"BAIN CAPITAL CREDIT MEMBER, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":112720,"kind":"organization","name":"Bain Capital Distressed & Special Situations 2016 (F), L.P.","position":2,"cik":"0001651587","reported_name":"Bain Capital Distressed & Special Situations 2016 (F), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":157510,"kind":"organization","name":"BCSF Holdings, L.P.","position":3,"cik":"0001683647","reported_name":"BCSF Holdings, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-06-27T13:29:24.000Z","date":"2017-06-26","kind":"purchase","acquired":true,"shares":413618.5,"price":8404728,"value":3476350988268.0,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"As June 26, 2017, shares of common stock of the issuer are directly held by the following entities: (a) 6,069,919.98 by BCSF Holdings, LP (\"BCSF Holdings\"), whose general partner is BCSF Holdings Investors, L.P. (\"BCSF Holdings GP\"), (b) 4,189,552.24 by Bain Capital Distressed and Special Situations 2016 (F), L.P. (\"F Holdings\"), whose general partner is Bain Capital Distressed and Special Situations 2016 Investors (F), L.P. (\"F Holdings GP\"), and (c) 806,070.65 by Bain Capital Credit Holdings (MRF), L.P. (\"MRF Holdings\" and together with BCSF Holdings and F Holdings, the \"Funds\"), whose general partner is Bain Capital Credit Holdings Investors (MRF), LP (\"MRF Holdings GP\").  Bain Capital Credit Member, LLC (\"BCCM\") is the general partner of BCSF Holdings GP, F Holdings GP and MRF Holdings GP."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"As of June 26, 2017, BCCM may be deemed to share beneficial ownership of all 11,065,542.87 shares of common stock held of record by the Funds, but disclaims beneficial ownership of such shares, except to the extent of its respective pecuniary interest therein."}],"balance_after":11065542.87,"source":{"system":"sec-edgar","filing":"0001179110-17-009637","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1683647/000117911017009637/edgar.xml","form_type":"4"}},{"id":4439587,"issuer":{"id":5138,"kind":"organization","name":"Bain Capital Specialty Finance, Inc."},"owners":[{"id":75268,"kind":"organization","name":"BAIN CAPITAL CREDIT MEMBER, LLC","position":1,"cik":"0001309111","reported_name":"BAIN CAPITAL CREDIT MEMBER, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":112720,"kind":"organization","name":"Bain Capital Distressed & Special Situations 2016 (F), L.P.","position":2,"cik":"0001651587","reported_name":"Bain Capital Distressed & Special Situations 2016 (F), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":157510,"kind":"organization","name":"BCSF Holdings, L.P.","position":3,"cik":"0001683647","reported_name":"BCSF Holdings, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-02-17T13:03:20.000Z","date":"2017-02-15","kind":"purchase","acquired":true,"shares":734517.45,"price":14859288,"value":10914406330575.6,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"As of February 15, 2017, shares of common stock of the issuer are directly held by the following entities: (a) 5,656,301.47 by BCSF Holdings, LP (\"BCSF Holdings\"), whose general partner is BCSF Holdings Investors, L.P. (\"BCSF Holdings GP\"), (b) 4,189,552.24 by Bain Capital Distressed and Special Situations 2016 (F), L.P. (\"F Holdings\"), whose general partner is Bain Capital Distressed and Special Situations 2016 Investors (F), L.P. (\"F Holdings GP\"), and (c) 806,070.65 by Bain Capital Credit Holdings (MRF), L.P. (\"MRF Holdings\" and together with BCSF Holdings and F Holdings, the \"Funds\"), whose general partner is Bain Capital Credit Holdings Investors (MRF), LP (\"MRF Holdings GP\").  Bain Capital Credit Member, LLC (\"BCCM\") is the general partner of BCSF Holdings GP, F Holdings GP and MRF Holdings GP."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"As of February 15, 2017, BCCM may be deemed to share beneficial ownership of all 10,651,924.36 shares of common stock held of record by the Funds, but disclaims beneficial ownership of such shares, except to the extent of its respective pecuniary interest therein."}],"balance_after":10651924.36,"source":{"system":"sec-edgar","filing":"0001179110-17-002637","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1683647/000117911017002637/edgar.xml","form_type":"4"}},{"id":4439586,"issuer":{"id":5138,"kind":"organization","name":"Bain Capital Specialty Finance, Inc."},"owners":[{"id":75268,"kind":"organization","name":"BAIN CAPITAL CREDIT MEMBER, LLC","position":1,"cik":"0001309111","reported_name":"BAIN CAPITAL CREDIT MEMBER, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":112720,"kind":"organization","name":"Bain Capital Distressed & Special Situations 2016 (F), L.P.","position":2,"cik":"0001651587","reported_name":"Bain Capital Distressed & Special Situations 2016 (F), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":157510,"kind":"organization","name":"BCSF Holdings, L.P.","position":3,"cik":"0001683647","reported_name":"BCSF Holdings, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-02-17T13:03:20.000Z","date":"2017-01-20","kind":"purchase","acquired":true,"shares":4946337.61,"price":99421386,"value":491771740810127.44,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"As of February 15, 2017, shares of common stock of the issuer are directly held by the following entities: (a) 5,656,301.47 by BCSF Holdings, LP (\"BCSF Holdings\"), whose general partner is BCSF Holdings Investors, L.P. (\"BCSF Holdings GP\"), (b) 4,189,552.24 by Bain Capital Distressed and Special Situations 2016 (F), L.P. (\"F Holdings\"), whose general partner is Bain Capital Distressed and Special Situations 2016 Investors (F), L.P. (\"F Holdings GP\"), and (c) 806,070.65 by Bain Capital Credit Holdings (MRF), L.P. (\"MRF Holdings\" and together with BCSF Holdings and F Holdings, the \"Funds\"), whose general partner is Bain Capital Credit Holdings Investors (MRF), LP (\"MRF Holdings GP\").  Bain Capital Credit Member, LLC (\"BCCM\") is the general partner of BCSF Holdings GP, F Holdings GP and MRF Holdings GP."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"As of February 15, 2017, BCCM may be deemed to share beneficial ownership of all 10,651,924.36 shares of common stock held of record by the Funds, but disclaims beneficial ownership of such shares, except to the extent of its respective pecuniary interest therein."}],"balance_after":9917406.91,"source":{"system":"sec-edgar","filing":"0001179110-17-002637","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1683647/000117911017002637/edgar.xml","form_type":"4"}}]}