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16b-3(d)."}],"balance_after":563923,"source":{"system":"sec-edgar","filing":"0001562180-22-006246","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1886457/000156218022006246/primarydocument.xml","form_type":"4"}},{"id":2208690,"issuer":{"id":5074,"kind":"organization","name":"Nextdoor Holdings, Inc.","symbol":"NXDR"},"owners":[{"id":91946,"kind":"person","name":"Orta John","position":1,"cik":"0001886457","reported_name":"Orta John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Head of Legal and Secretary"}}],"security":"Class B Common Stock","published_at":"2022-07-12T20:15:03.000Z","date":"2022-06-27","kind":"exercise","acquired":false,"shares":563923,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"A holder's shares of the Issuer's Class B Common Stock convert automatically upon certain transfers. Additionally, all of the Issuer's Class B Common Stock will convert automatically into Class A Common Stock on a one-for-one basis upon the earlier of: (i) November 5, 2031; or (ii) the date specified by the affirmative vote of the holders of two-thirds of the Class B Common Stock then outstanding."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"A holder's shares of the Issuer's Class B Common Stock convert automatically upon certain transfers. Additionally, all of the Issuer's Class B Common Stock will convert automatically into Class A Common Stock on a one-for-one basis upon the earlier of: (i) November 5, 2031; or (ii) the date specified by the affirmative vote of the holders of two-thirds of the Class B Common Stock then outstanding."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"A holder's shares of the Issuer's Class B Common Stock convert automatically upon certain transfers. Additionally, all of the Issuer's Class B Common Stock will convert automatically into Class A Common Stock on a one-for-one basis upon the earlier of: (i) November 5, 2031; or (ii) the date specified by the affirmative vote of the holders of two-thirds of the Class B Common Stock then outstanding."}],"balance_after":0,"derivative":{"underlying":"Class A Common Stock","underlying_shares":563923},"source":{"system":"sec-edgar","filing":"0001562180-22-005657","document":"primarydocument.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1886457/000156218022005657/primarydocument.xml","form_type":"4"}},{"id":2208689,"issuer":{"id":5074,"kind":"organization","name":"Nextdoor Holdings, Inc.","symbol":"NXDR"},"owners":[{"id":91946,"kind":"person","name":"Orta John","position":1,"cik":"0001886457","reported_name":"Orta John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Head of Legal and Secretary"}}],"security":"Class A Common Stock","published_at":"2022-07-12T20:15:03.000Z","date":"2022-06-27","kind":"exercise","acquired":true,"shares":563923,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"A holder's shares of the Issuer's Class B Common Stock convert automatically upon certain transfers. Additionally, all of the Issuer's Class B Common Stock will convert automatically into Class A Common Stock on a one-for-one basis upon the earlier of: (i) November 5, 2031; or (ii) the date specified by the affirmative vote of the holders of two-thirds of the Class B Common Stock then outstanding."}],"balance_after":563923,"source":{"system":"sec-edgar","filing":"0001562180-22-005657","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1886457/000156218022005657/primarydocument.xml","form_type":"4"}},{"id":2315570,"issuer":{"id":5074,"kind":"organization","name":"Nextdoor Holdings, Inc.","symbol":"NXDR"},"owners":[{"id":91946,"kind":"person","name":"Orta John","position":1,"cik":"0001886457","reported_name":"Orta John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Head of Legal and Secretary"}}],"security":"Stock 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monthly on the 31st in ratable increments of 1/12, with the first vesting event occurring on January 31, 2024, subject to the reporting person's continued service to the Issuer on each vesting date."}],"balance_after":271020,"derivative":{"exercise_price":6.06,"expiration_date":"2032-03-24","underlying":"Class A Common Stock","underlying_shares":271020},"source":{"system":"sec-edgar","filing":"0001562180-22-002976","document":"primarydocument.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1886457/000156218022002976/primarydocument.xml","form_type":"4"}},{"id":2404612,"issuer":{"id":5074,"kind":"organization","name":"Nextdoor Holdings, Inc.","symbol":"NXDR"},"owners":[{"id":91946,"kind":"person","name":"Orta John","position":1,"cik":"0001886457","reported_name":"Orta John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Head of Legal and 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Holdings, Inc.","symbol":"NXDR"},"owners":[{"id":91946,"kind":"person","name":"Orta John","position":1,"cik":"0001886457","reported_name":"Orta John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Head of Legal and Secretary"}}],"security":"Class B Common Stock","published_at":"2022-02-10T16:26:50.000Z","date":"2022-02-08","kind":"exercise","acquired":true,"shares":51174,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of the Issuer's Class B Common Stock is convertible into one share of Class A Common Stock at any time, at the election of the\nholder or automatically upon certain transfers."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Each share of the Issuer's Class B Common Stock is convertible into one share of Class A Common Stock at any time, at the election of the\nholder or automatically upon certain transfers."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"A holder's shares of the Issuer's Class B Common Stock convert automatically upon certain transfers. Additionally, all of the Issuer's Class B Common Stock will convert automatically into Class A Common Stock on a one-for-one basis upon the earlier of: (i) November 5, 2031; or (ii) the date specified by the affirmative vote of the holders of two-thirds of the Class B Common Stock then outstanding."}],"balance_after":563923,"derivative":{"underlying":"Class A Common Stock","underlying_shares":51174},"source":{"system":"sec-edgar","filing":"0001562180-22-001333","document":"primarydocument.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1886457/000156218022001333/primarydocument.xml","form_type":"4"}},{"id":2419506,"issuer":{"id":5074,"kind":"organization","name":"Nextdoor Holdings, Inc.","symbol":"NXDR"},"owners":[{"id":91946,"kind":"person","name":"Orta John","position":1,"cik":"0001886457","reported_name":"Orta John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Head of Legal and Secretary"}}],"security":"Stock Option (Right to Buy)","published_at":"2022-02-01T17:58:07.000Z","date":"2022-01-31","kind":"exercise","acquired":false,"shares":53428,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The award vests as to 1/48 of the total award monthly on the sixth (6th), subject to the reporting person's continued service to the Issuer on each vesting date."}],"balance_after":222803,"derivative":{"exercise_price":1.18,"expiration_date":"2028-08-28","underlying":"Class B Common Stock","underlying_shares":53428},"source":{"system":"sec-edgar","filing":"0001562180-22-000862","document":"primarydocument.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1886457/000156218022000862/primarydocument.xml","form_type":"4"}},{"id":2419505,"issuer":{"id":5074,"kind":"organization","name":"Nextdoor Holdings, Inc.","symbol":"NXDR"},"owners":[{"id":91946,"kind":"person","name":"Orta John","position":1,"cik":"0001886457","reported_name":"Orta John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Head of Legal and Secretary"}}],"security":"Class B Common Stock","published_at":"2022-02-01T17:58:07.000Z","date":"2022-01-31","kind":"exercise","acquired":true,"shares":53428,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of the Issuer's Class B Common Stock is convertible into one share of Class A Common Stock at any time, at the election of the\nholder or automatically upon certain transfers."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Each share of the Issuer's Class B Common Stock is convertible into one share of Class A Common Stock at any time, at the election of the\nholder or automatically upon certain transfers."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"A holder's shares of the Issuer's Class B Common Stock convert automatically upon certain transfers. Additionally, all of the Issuer's Class B Common Stock will convert automatically into Class A Common Stock on a one-for-one basis upon the earlier of: (i) November 5, 2031; or (ii) the date specified by the affirmative vote of the holders of two-thirds of the Class B Common Stock then outstanding."}],"balance_after":512749,"derivative":{"underlying":"Class A Common Stock","underlying_shares":53428},"source":{"system":"sec-edgar","filing":"0001562180-22-000862","document":"primarydocument.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1886457/000156218022000862/primarydocument.xml","form_type":"4"}},{"id":2439004,"issuer":{"id":5074,"kind":"organization","name":"Nextdoor Holdings, Inc.","symbol":"NXDR"},"owners":[{"id":91946,"kind":"person","name":"Orta John","position":1,"cik":"0001886457","reported_name":"Orta John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Head of Legal and Secretary"}}],"security":"Stock Option (Right to Buy)","published_at":"2022-01-10T16:29:21.000Z","date":"2021-11-05","kind":"grant","acquired":true,"shares":81244,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"In connection with the consummation of the Business Combination, the reporting person's stock options previously awarded by Original Nextdoor for shares of its common stock were exchanged for substitute option awards, of an equivalent economic value, which vest and become exercisable for shares of the Issuer's Class B Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"In connection with the consummation of the Business Combination, the reporting person's stock options previously awarded by Original Nextdoor for shares of its common stock were exchanged for substitute option awards, of an equivalent economic value, which vest and become exercisable for shares of the Issuer's Class B Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F8","text":"1/12 of the options will vest on February 1, 2022, and the remainder will vest as to 1/12 of the total award monthly on the first (1st) thereafter, subject to the reporting person's continued service to the Issuer on each vesting date."}],"balance_after":81244,"derivative":{"exercise_price":2.41,"expiration_date":"2031-03-23","underlying":"Class B Common Stock","underlying_shares":81244},"source":{"system":"sec-edgar","filing":"0001209191-22-002700","document":"doc4a.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1886457/000120919122002700/doc4a.xml","form_type":"4/A","original_submission_date":"2021-11-09"}},{"id":2439003,"issuer":{"id":5074,"kind":"organization","name":"Nextdoor Holdings, Inc.","symbol":"NXDR"},"owners":[{"id":91946,"kind":"person","name":"Orta John","position":1,"cik":"0001886457","reported_name":"Orta John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Head of Legal and Secretary"}}],"security":"Stock Option (Right to Buy)","published_at":"2022-01-10T16:29:21.000Z","date":"2021-11-05","kind":"grant","acquired":true,"shares":27037,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"In connection with the consummation of the Business Combination, the reporting person's stock options previously awarded by Original Nextdoor for shares of its common stock were exchanged for substitute option awards, of an equivalent economic value, which vest and become exercisable for shares of the Issuer's Class B Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"In connection with the consummation of the Business Combination, the reporting person's stock options previously awarded by Original Nextdoor for shares of its common stock were exchanged for substitute option awards, of an equivalent economic value, which vest and become exercisable for shares of the Issuer's Class B Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"1/8 of the options will vest on June 1, 2023, and the remainder will vest as to 1/8 of the total award monthly on the first (1st) thereafter, subject to the reporting person's continued service to the Issuer on each vesting date."}],"balance_after":27037,"derivative":{"exercise_price":2.41,"expiration_date":"2031-03-23","underlying":"Class B Common Stock","underlying_shares":27037},"source":{"system":"sec-edgar","filing":"0001209191-22-002700","document":"doc4a.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1886457/000120919122002700/doc4a.xml","form_type":"4/A","original_submission_date":"2021-11-09"}},{"id":2439002,"issuer":{"id":5074,"kind":"organization","name":"Nextdoor Holdings, Inc.","symbol":"NXDR"},"owners":[{"id":91946,"kind":"person","name":"Orta John","position":1,"cik":"0001886457","reported_name":"Orta John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Head of Legal and Secretary"}}],"security":"Stock Option (Right to Buy)","published_at":"2022-01-10T16:29:21.000Z","date":"2021-11-05","kind":"grant","acquired":true,"shares":243730,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"In connection with the consummation of the Business Combination, the reporting person's stock options previously awarded by Original Nextdoor for shares of its common stock were exchanged for substitute option awards, of an equivalent economic value, which vest and become exercisable for shares of the Issuer's Class B Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"In connection with the consummation of the Business Combination, the reporting person's stock options previously awarded by Original Nextdoor for shares of its common stock were exchanged for substitute option awards, of an equivalent economic value, which vest and become exercisable for shares of the Issuer's Class B Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"1/12 of the options will vest on February 1, 2023, and the remainder will vest as to 1/12 of the total award monthly on the first (1st) thereafter, subject to the reporting person's continued service to the Issuer on each vesting date."}],"balance_after":243730,"derivative":{"exercise_price":2.41,"expiration_date":"2031-03-23","underlying":"Class B Common Stock","underlying_shares":243730},"source":{"system":"sec-edgar","filing":"0001209191-22-002700","document":"doc4a.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1886457/000120919122002700/doc4a.xml","form_type":"4/A","original_submission_date":"2021-11-09"}},{"id":2439001,"issuer":{"id":5074,"kind":"organization","name":"Nextdoor Holdings, Inc.","symbol":"NXDR"},"owners":[{"id":91946,"kind":"person","name":"Orta John","position":1,"cik":"0001886457","reported_name":"Orta John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Head of Legal and Secretary"}}],"security":"Stock Option (Right to Buy)","published_at":"2022-01-10T16:29:21.000Z","date":"2021-11-05","kind":"grant","acquired":true,"shares":84110,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"In connection with the consummation of the Business Combination, the reporting person's stock options previously awarded by Original Nextdoor for shares of its common stock were exchanged for substitute option awards, of an equivalent economic value, which vest and become exercisable for shares of the Issuer's Class B Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"In connection with the consummation of the Business Combination, the reporting person's stock options previously awarded by Original Nextdoor for shares of its common stock were exchanged for substitute option awards, of an equivalent economic value, which vest and become exercisable for shares of the Issuer's Class B Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"29,116 of the options vest on the transaction date. The remainder will vest as to 1/48 of the total award monthly on the first (1st) thereafter, subject to the reporting person's continued service to the Issuer on each vesting date."}],"balance_after":84110,"derivative":{"exercise_price":2.19,"expiration_date":"2029-06-16","underlying":"Class B Common Stock","underlying_shares":84110},"source":{"system":"sec-edgar","filing":"0001209191-22-002700","document":"doc4a.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1886457/000120919122002700/doc4a.xml","form_type":"4/A","original_submission_date":"2021-11-09"}},{"id":2439000,"issuer":{"id":5074,"kind":"organization","name":"Nextdoor Holdings, Inc.","symbol":"NXDR"},"owners":[{"id":91946,"kind":"person","name":"Orta John","position":1,"cik":"0001886457","reported_name":"Orta John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Head of Legal and Secretary"}}],"security":"Stock Option (Right to Buy)","published_at":"2022-01-10T16:29:21.000Z","date":"2021-11-05","kind":"grant","acquired":true,"shares":276231,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"In connection with the consummation of the Business Combination, the reporting person's stock options previously awarded by Original Nextdoor for shares of its common stock were exchanged for substitute option awards, of an equivalent economic value, which vest and become exercisable for shares of the Issuer's Class B Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"In connection with the consummation of the Business Combination, the reporting person's stock options previously awarded by Original Nextdoor for shares of its common stock were exchanged for substitute option awards, of an equivalent economic value, which vest and become exercisable for shares of the Issuer's Class B Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"114,480 of the options vest on the transaction date. The remainder will vest as to 1/48 of the total award monthly on the sixth (6th) thereafter, subject to the reporting person's continued service to the Issuer on each vesting date."}],"balance_after":276231,"derivative":{"exercise_price":1.18,"expiration_date":"2028-08-28","underlying":"Class B Common Stock","underlying_shares":276231},"source":{"system":"sec-edgar","filing":"0001209191-22-002700","document":"doc4a.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1886457/000120919122002700/doc4a.xml","form_type":"4/A","original_submission_date":"2021-11-09"}},{"id":2438999,"issuer":{"id":5074,"kind":"organization","name":"Nextdoor Holdings, Inc.","symbol":"NXDR"},"owners":[{"id":91946,"kind":"person","name":"Orta John","position":1,"cik":"0001886457","reported_name":"Orta John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Head of Legal and Secretary"}}],"security":"Class B Common Stock","published_at":"2022-01-10T16:29:21.000Z","date":"2021-11-05","kind":"grant","acquired":true,"shares":459321,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Represents shares of Class B Common Stock of the Issuer received pursuant to a business combination (the \"Business Combination\") which was effectuated in accordance with the terms of an Agreement and Plan of Merger dated as of July 6, 2021, entered into by and among: (i) Khosla Ventures Acquisition Co. II (the \"Issuer\"), a Delaware corporation; (ii) Lorelei Merger Sub Inc., a Delaware corporation and a wholly-owned subsidiary of the Issuer; and (iii) Nextdoor, Inc. (\"Original Nextdoor\"), a Delaware corporation. As a result of the Business Combination, Original Nextdoor became a wholly-owned subsidiary of the Issuer and the Issuer was renamed \"Nextdoor Holdings, Inc.\" Upon completion of the Business Combination, the reporting person's shares of common stock of Original Nextdoor were exchanged for shares of Class B Common Stock of the Issuer based on an exchange ratio of 3.1057 to 1."},{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents shares of Class B Common Stock of the Issuer received pursuant to a business combination (the \"Business Combination\") which was effectuated in accordance with the terms of an Agreement and Plan of Merger dated as of July 6, 2021, entered into by and among: (i) Khosla Ventures Acquisition Co. II (the \"Issuer\"), a Delaware corporation; (ii) Lorelei Merger Sub Inc., a Delaware corporation and a wholly-owned subsidiary of the Issuer; and (iii) Nextdoor, Inc. (\"Original Nextdoor\"), a Delaware corporation. As a result of the Business Combination, Original Nextdoor became a wholly-owned subsidiary of the Issuer and the Issuer was renamed \"Nextdoor Holdings, Inc.\" Upon completion of the Business Combination, the reporting person's shares of common stock of Original Nextdoor were exchanged for shares of Class B Common Stock of the Issuer based on an exchange ratio of 3.1057 to 1."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents shares of Class B Common Stock of the Issuer received pursuant to a business combination (the \"Business Combination\") which was effectuated in accordance with the terms of an Agreement and Plan of Merger dated as of July 6, 2021, entered into by and among: (i) Khosla Ventures Acquisition Co. II (the \"Issuer\"), a Delaware corporation; (ii) Lorelei Merger Sub Inc., a Delaware corporation and a wholly-owned subsidiary of the Issuer; and (iii) Nextdoor, Inc. (\"Original Nextdoor\"), a Delaware corporation. As a result of the Business Combination, Original Nextdoor became a wholly-owned subsidiary of the Issuer and the Issuer was renamed \"Nextdoor Holdings, Inc.\" Upon completion of the Business Combination, the reporting person's shares of common stock of Original Nextdoor were exchanged for shares of Class B Common Stock of the Issuer based on an exchange ratio of 3.1057 to 1."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Each share of Class B Common Stock is convertible into one share of the Issuer's Class A Common Stock at the election of the holder at any time; provided; however, that each share of Class B Common Stock shall automatically be converted into Class A Common Stock on a one-for-one basis on the earlier of the: (i) tenth anniversary of completion of the Business Combination or (ii) date specified by the affirmative vote of the holders of two-thirds of the Class B Common Stock then outstanding. In addition, each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon any transfer, whether or not for value (subject to certain exceptions)."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Each share of Class B Common Stock is convertible into one share of the Issuer's Class A Common Stock at the election of the holder at any time; provided; however, that each share of Class B Common Stock shall automatically be converted into Class A Common Stock on a one-for-one basis on the earlier of the: (i) tenth anniversary of completion of the Business Combination or (ii) date specified by the affirmative vote of the holders of two-thirds of the Class B Common Stock then outstanding. In addition, each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon any transfer, whether or not for value (subject to certain exceptions)."}],"balance_after":459321,"derivative":{"underlying":"Class A Common Stock","underlying_shares":459321},"source":{"system":"sec-edgar","filing":"0001209191-22-002700","document":"doc4a.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1886457/000120919122002700/doc4a.xml","form_type":"4/A","original_submission_date":"2021-11-09"}},{"id":2519965,"issuer":{"id":5074,"kind":"organization","name":"Nextdoor Holdings, Inc.","symbol":"NXDR"},"owners":[{"id":91946,"kind":"person","name":"Orta John","position":1,"cik":"0001886457","reported_name":"Orta John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Head of Legal and Secretary"}}],"security":"Stock Option (Right to Buy)","published_at":"2021-11-09T20:40:30.000Z","date":"2021-11-05","kind":"grant","acquired":true,"shares":81244,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"In connection with the consummation of the Business Combination, the reporting person's stock options previously awarded by Original Nextdoor for shares of its common stock were exchanged for substitute option awards, of an equivalent economic value, which vest and become exercisable for shares of the Issuer's Class B Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"In connection with the consummation of the Business Combination, the reporting person's stock options previously awarded by Original Nextdoor for shares of its common stock were exchanged for substitute option awards, of an equivalent economic value, which vest and become exercisable for shares of the Issuer's Class B Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F8","text":"1/12 of the total shares underlying the option will vest on January 1, 2022, and the remainder will vest as to 1/12 of the total award in monthly installments thereafter, subject to the reporting person's continued service to the Issuer on each vesting date."}],"balance_after":81244,"derivative":{"exercise_price":2.41,"expiration_date":"2031-03-23","underlying":"Class B Common Stock","underlying_shares":81244},"source":{"system":"sec-edgar","filing":"0001209191-21-063780","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1886457/000120919121063780/doc4.xml","form_type":"4"}},{"id":2519964,"issuer":{"id":5074,"kind":"organization","name":"Nextdoor Holdings, Inc.","symbol":"NXDR"},"owners":[{"id":91946,"kind":"person","name":"Orta John","position":1,"cik":"0001886457","reported_name":"Orta John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Head of Legal and Secretary"}}],"security":"Stock Option (Right to Buy)","published_at":"2021-11-09T20:40:30.000Z","date":"2021-11-05","kind":"grant","acquired":true,"shares":27037,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"In connection with the consummation of the Business Combination, the reporting person's stock options previously awarded by Original Nextdoor for shares of its common stock were exchanged for substitute option awards, of an equivalent economic value, which vest and become exercisable for shares of the Issuer's Class B Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"In connection with the consummation of the Business Combination, the reporting person's stock options previously awarded by Original Nextdoor for shares of its common stock were exchanged for substitute option awards, of an equivalent economic value, which vest and become exercisable for shares of the Issuer's Class B Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"1/8 of the total shares underlying the option will vest on May 1, 2023, and the remainder will vest as to 1/8 of the total award in monthly installments thereafter, subject to the reporting person's continued service to the Issuer on each vesting date."}],"balance_after":27037,"derivative":{"exercise_price":2.41,"expiration_date":"2031-03-23","underlying":"Class B Common Stock","underlying_shares":27037},"source":{"system":"sec-edgar","filing":"0001209191-21-063780","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1886457/000120919121063780/doc4.xml","form_type":"4"}},{"id":2519963,"issuer":{"id":5074,"kind":"organization","name":"Nextdoor Holdings, Inc.","symbol":"NXDR"},"owners":[{"id":91946,"kind":"person","name":"Orta John","position":1,"cik":"0001886457","reported_name":"Orta John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Head of Legal and Secretary"}}],"security":"Stock Option (Right to Buy)","published_at":"2021-11-09T20:40:30.000Z","date":"2021-11-05","kind":"grant","acquired":true,"shares":243730,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"In connection with the consummation of the Business Combination, the reporting person's stock options previously awarded by Original Nextdoor for shares of its common stock were exchanged for substitute option awards, of an equivalent economic value, which vest and become exercisable for shares of the Issuer's Class B Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"In connection with the consummation of the Business Combination, the reporting person's stock options previously awarded by Original Nextdoor for shares of its common stock were exchanged for substitute option awards, of an equivalent economic value, which vest and become exercisable for shares of the Issuer's Class B Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"1/12 of the total shares underlying the option will vest on January 1, 2023, and the remainder will vest as to 1/12 of the total award in monthly installments thereafter, subject to the reporting person's continued service to the Issuer on each vesting date."}],"balance_after":243730,"derivative":{"exercise_price":2.41,"expiration_date":"2031-03-23","underlying":"Class B Common Stock","underlying_shares":243730},"source":{"system":"sec-edgar","filing":"0001209191-21-063780","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1886457/000120919121063780/doc4.xml","form_type":"4"}},{"id":2519962,"issuer":{"id":5074,"kind":"organization","name":"Nextdoor Holdings, Inc.","symbol":"NXDR"},"owners":[{"id":91946,"kind":"person","name":"Orta John","position":1,"cik":"0001886457","reported_name":"Orta John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Head of Legal and Secretary"}}],"security":"Stock Option (Right to Buy)","published_at":"2021-11-09T20:40:30.000Z","date":"2021-11-05","kind":"grant","acquired":true,"shares":84110,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"In connection with the consummation of the Business Combination, the reporting person's stock options previously awarded by Original Nextdoor for shares of its common stock were exchanged for substitute option awards, of an equivalent economic value, which vest and become exercisable for shares of the Issuer's Class B Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"In connection with the consummation of the Business Combination, the reporting person's stock options previously awarded by Original Nextdoor for shares of its common stock were exchanged for substitute option awards, of an equivalent economic value, which vest and become exercisable for shares of the Issuer's Class B Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"100,288 shares of this award vest on the grant date.  The remainder will vest in equal installments on the first (1st) of each month thereafter until April 1, 2023, subject to the reporting person's continued service to the Issuer on each vesting date."}],"balance_after":84110,"derivative":{"exercise_price":2.19,"expiration_date":"2029-06-16","underlying":"Class B Common Stock","underlying_shares":84110},"source":{"system":"sec-edgar","filing":"0001209191-21-063780","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1886457/000120919121063780/doc4.xml","form_type":"4"}},{"id":2519961,"issuer":{"id":5074,"kind":"organization","name":"Nextdoor Holdings, Inc.","symbol":"NXDR"},"owners":[{"id":91946,"kind":"person","name":"Orta John","position":1,"cik":"0001886457","reported_name":"Orta John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Head of Legal and Secretary"}}],"security":"Stock Option (Right to Buy)","published_at":"2021-11-09T20:40:30.000Z","date":"2021-11-05","kind":"grant","acquired":true,"shares":276231,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"In connection with the consummation of the Business Combination, the reporting person's stock options previously awarded by Original Nextdoor for shares of its common stock were exchanged for substitute option awards, of an equivalent economic value, which vest and become exercisable for shares of the Issuer's Class B Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"In connection with the consummation of the Business Combination, the reporting person's stock options previously awarded by Original Nextdoor for shares of its common stock were exchanged for substitute option awards, of an equivalent economic value, which vest and become exercisable for shares of the Issuer's Class B Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"614,667 of the total shares underlying the option vest on the grant date.  The remainder will vest in equal installments on the sixth (6th) of each month thereafter through August 6, 2022, subject to the reporting person's continued service to the Issuer on each vesting date."}],"balance_after":276231,"derivative":{"exercise_price":1.18,"expiration_date":"2028-08-28","underlying":"Class B Common Stock","underlying_shares":276231},"source":{"system":"sec-edgar","filing":"0001209191-21-063780","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1886457/000120919121063780/doc4.xml","form_type":"4"}},{"id":2519960,"issuer":{"id":5074,"kind":"organization","name":"Nextdoor Holdings, Inc.","symbol":"NXDR"},"owners":[{"id":91946,"kind":"person","name":"Orta John","position":1,"cik":"0001886457","reported_name":"Orta John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Head of Legal and Secretary"}}],"security":"Class B Common Stock","published_at":"2021-11-09T20:40:30.000Z","date":"2021-11-05","kind":"grant","acquired":true,"shares":459321,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Represents shares of Class B Common Stock of the Issuer received pursuant to a business combination (the \"Business Combination\") which was effectuated in accordance with the terms of an Agreement and Plan of Merger dated as of July 6, 2021, entered into by and among:  (i) Khosla Ventures Acquisition Co. II (the \"Issuer\"), a Delaware corporation; (ii) Lorelei Merger Sub Inc., a Delaware corporation and a wholly-owned subsidiary of the Issuer; and (iii) Nextdoor, Inc. (\"Original Nextdoor\"), a Delaware corporation.  As a result of the Business Combination, Original Nextdoor became a wholly owned subsidiary of the Issuer and the Issuer was renamed \"Nextdoor Holdings, Inc.\"  Upon completion of the Business Combination, the reporting person's shares of Common Stock of Original Nextdoor were exchanged for shares of Class B Common Stock of the Issuer based on an exchange ratio of 3.1057 to 1."},{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents shares of Class B Common Stock of the Issuer received pursuant to a business combination (the \"Business Combination\") which was effectuated in accordance with the terms of an Agreement and Plan of Merger dated as of July 6, 2021, entered into by and among:  (i) Khosla Ventures Acquisition Co. II (the \"Issuer\"), a Delaware corporation; (ii) Lorelei Merger Sub Inc., a Delaware corporation and a wholly-owned subsidiary of the Issuer; and (iii) Nextdoor, Inc. (\"Original Nextdoor\"), a Delaware corporation.  As a result of the Business Combination, Original Nextdoor became a wholly owned subsidiary of the Issuer and the Issuer was renamed \"Nextdoor Holdings, Inc.\"  Upon completion of the Business Combination, the reporting person's shares of Common Stock of Original Nextdoor were exchanged for shares of Class B Common Stock of the Issuer based on an exchange ratio of 3.1057 to 1."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents shares of Class B Common Stock of the Issuer received pursuant to a business combination (the \"Business Combination\") which was effectuated in accordance with the terms of an Agreement and Plan of Merger dated as of July 6, 2021, entered into by and among:  (i) Khosla Ventures Acquisition Co. II (the \"Issuer\"), a Delaware corporation; (ii) Lorelei Merger Sub Inc., a Delaware corporation and a wholly-owned subsidiary of the Issuer; and (iii) Nextdoor, Inc. (\"Original Nextdoor\"), a Delaware corporation.  As a result of the Business Combination, Original Nextdoor became a wholly owned subsidiary of the Issuer and the Issuer was renamed \"Nextdoor Holdings, Inc.\"  Upon completion of the Business Combination, the reporting person's shares of Common Stock of Original Nextdoor were exchanged for shares of Class B Common Stock of the Issuer based on an exchange ratio of 3.1057 to 1."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Each share of Class B Common Stock is convertible into one share of Class A Common Stock of the Issuer at the election of the holder any time; provided; however, that each share of Class B Common Stock shall automatically be converted into Class A Common Stock on a one for one basis on the earlier of the:  (i) tenth anniversary of completion of the Business Combination or (ii) date specified by the affirmative vote of the holders of two thirds of the Class B Common Stock then outstanding.  In addition, each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon any transfer, whether or not for value (subject to certain exceptions)."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Each share of Class B Common Stock is convertible into one share of Class A Common Stock of the Issuer at the election of the holder any time; provided; however, that each share of Class B Common Stock shall automatically be converted into Class A Common Stock on a one for one basis on the earlier of the:  (i) tenth anniversary of completion of the Business Combination or (ii) date specified by the affirmative vote of the holders of two thirds of the Class B Common Stock then outstanding.  In addition, each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon any transfer, whether or not for value (subject to certain exceptions)."}],"balance_after":459321,"derivative":{"underlying":"Class A Common Stock","underlying_shares":459321},"source":{"system":"sec-edgar","filing":"0001209191-21-063780","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1886457/000120919121063780/doc4.xml","form_type":"4"}}]}