{"transactions":[{"id":4636508,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Deferred Share Units","published_at":"2026-10-06T23:21:47.000Z","date":"2026-10-03","kind":"exercise","planned":false,"acquired":true,"shares":221188,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F5","text":"Each deferred share unit (\"DSU\") represents a contingent right to receive one share of common stock of the Company."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"Represents the aggregate amount of RSUs that were converted into an equivalent number of DSUs pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and Performance Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"Represents the aggregate amount of RSUs that were converted into an equivalent number of DSUs pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and Performance Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended."}],"balance_after":418731,"derivative":{"underlying":"Common Stock","underlying_shares":221188},"source":{"system":"sec-edgar","filing":"0001628280-26-065277","document":"wk-form4_1791328904.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1380820/000162828026065277/wk-form4_1791328904.xml","form_type":"4"}},{"id":4636507,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2026-10-06T23:21:47.000Z","date":"2026-10-03","kind":"exercise","planned":false,"acquired":false,"shares":232816,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each RSU represents a contingent right to receive one share of the Company's common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Represents the aggregate amount of RSUs that vested."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Represents the aggregate amount of RSUs that vested."}],"balance_after":232787,"derivative":{"underlying":"Common Stock","underlying_shares":232816},"source":{"system":"sec-edgar","filing":"0001628280-26-065277","document":"wk-form4_1791328904.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1380820/000162828026065277/wk-form4_1791328904.xml","form_type":"4"}},{"id":4636506,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2026-10-06T23:21:47.000Z","date":"2026-10-03","kind":"exercise","planned":false,"acquired":false,"shares":15229,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each RSU represents a contingent right to receive one share of the Company's common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Represents the aggregate amount of RSUs that vested."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Represents the aggregate amount of RSUs that vested."}],"balance_after":465603,"derivative":{"underlying":"Common Stock","underlying_shares":15229},"source":{"system":"sec-edgar","filing":"0001628280-26-065277","document":"wk-form4_1791328904.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1380820/000162828026065277/wk-form4_1791328904.xml","form_type":"4"}},{"id":4636505,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-10-06T23:21:47.000Z","date":"2026-10-03","kind":"tax_withholding","planned":false,"acquired":false,"shares":11638,"price":4.6,"value":53534.8,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents the amount of RSUs that were converted into shares of common stock and withheld by the Company to satisfy certain tax withholding obligations."}],"balance_after":1072032,"source":{"system":"sec-edgar","filing":"0001628280-26-065277","document":"wk-form4_1791328904.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1380820/000162828026065277/wk-form4_1791328904.xml","form_type":"4"}},{"id":4636504,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-10-06T23:21:47.000Z","date":"2026-10-03","kind":"exercise","planned":false,"acquired":true,"shares":11628,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The reporting person acquired shares of common stock Octave Specialty Group, Inc. (the \"Company\") upon the vesting and settlement of a portion of the reporting person's restricted stock unit (\"RSU\") awards as part of their 2025 Long Term Incentive Plan."}],"balance_after":1083670,"source":{"system":"sec-edgar","filing":"0001628280-26-065277","document":"wk-form4_1791328904.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1380820/000162828026065277/wk-form4_1791328904.xml","form_type":"4"}},{"id":4636503,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-10-06T23:21:47.000Z","date":"2026-10-03","kind":"tax_withholding","planned":false,"acquired":false,"shares":8421,"price":4.6,"value":38736.6,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents the amount of RSUs that were converted into shares of common stock and withheld by the Company to satisfy certain tax withholding obligations."}],"balance_after":1072042,"source":{"system":"sec-edgar","filing":"0001628280-26-065277","document":"wk-form4_1791328904.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1380820/000162828026065277/wk-form4_1791328904.xml","form_type":"4"}},{"id":4636502,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-10-06T23:21:47.000Z","date":"2026-10-03","kind":"exercise","planned":false,"acquired":true,"shares":15229,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The reporting person acquired shares of common stock Octave Specialty Group, Inc. (the \"Company\") upon the vesting and settlement of a portion of the reporting person's restricted stock unit (\"RSU\") awards as part of their 2025 Long Term Incentive Plan."}],"balance_after":1080463,"source":{"system":"sec-edgar","filing":"0001628280-26-065277","document":"wk-form4_1791328904.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1380820/000162828026065277/wk-form4_1791328904.xml","form_type":"4"}},{"id":710883,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2026-07-13T20:05:44.000Z","date":"2026-07-09","kind":"exercise","planned":false,"acquired":false,"shares":39380,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each RSU represents a contingent right to receive one share of the Company's common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The RSUs vested pursuant to the first of three equal annual installments under the reporting person's 2025 Long Term Incentive Plan award, which vests in equal installments on July 9, 2026, July 9, 2027, and July 9, 2028."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The RSUs vested pursuant to the first of three equal annual installments under the reporting person's 2025 Long Term Incentive Plan award, which vests in equal installments on July 9, 2026, July 9, 2027, and July 9, 2028."}],"balance_after":480832,"derivative":{"underlying":"Common Stock","underlying_shares":39380},"source":{"system":"sec-edgar","filing":"0001628280-26-048011","document":"wk-form4_1783973141.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/874501/000162828026048011/wk-form4_1783973141.xml","form_type":"4"}},{"id":710882,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-07-13T20:05:44.000Z","date":"2026-07-09","kind":"tax_withholding","planned":false,"acquired":false,"shares":21777,"price":6.08,"value":132404.16,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents the amount of RSUs that were converted into shares of common stock and withheld by the Company to satisfy certain tax withholding obligations."}],"balance_after":1065234,"source":{"system":"sec-edgar","filing":"0001628280-26-048011","document":"wk-form4_1783973141.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/874501/000162828026048011/wk-form4_1783973141.xml","form_type":"4"}},{"id":710881,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-07-13T20:05:44.000Z","date":"2026-07-09","kind":"exercise","planned":false,"acquired":true,"shares":39380,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The reporting person acquired shares of common stock of Octave Specialty Group, Inc. (the \"Company\") upon the vesting and settlement of a portion of the reporting person's restricted stock unit (\"RSU\") awards as part of their 2025 Long Term Incentive Plan."}],"balance_after":1087011,"source":{"system":"sec-edgar","filing":"0001628280-26-048011","document":"wk-form4_1783973141.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/874501/000162828026048011/wk-form4_1783973141.xml","form_type":"4"}},{"id":828678,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2026-03-25T20:55:09.000Z","date":"2026-03-23","kind":"grant","planned":false,"acquired":true,"shares":99375,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit (\"RSU\") represents a contingent right to receive one share of the common stock of Octave Specialty Group, Inc. (the \"Company\")."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"On March 23, 2026 the reporting person received a grant of 99,375 RSUs as part of his 2026 Long Term Incentive Plan award. The RSUs will vest in three equal annual installments commencing March 23, 2027, March 23, 2028, and March 23, 2029."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"On March 23, 2026 the reporting person received a grant of 99,375 RSUs as part of his 2026 Long Term Incentive Plan award. The RSUs will vest in three equal annual installments commencing March 23, 2027, March 23, 2028, and March 23, 2029."}],"balance_after":520212,"derivative":{"underlying":"Common Stock","underlying_shares":99375},"source":{"system":"sec-edgar","filing":"0001628280-26-021062","document":"wk-form4_1774472107.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/874501/000162828026021062/wk-form4_1774472107.xml","form_type":"4"}},{"id":859831,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Deferred Share Units","published_at":"2026-03-05T22:14:27.000Z","date":"2026-03-03","kind":"exercise","planned":false,"acquired":true,"shares":22582,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F5","text":"Each deferred share unit (\"DSU\") represents a contingent right to receive one share of common stock of the Company."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"Represents the aggregate amount of RSUs that were converted into an equivalent number of DSUs pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and Performance Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"Represents the aggregate amount of RSUs that were converted into an equivalent number of DSUs pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and Performance Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended."}],"balance_after":197543,"derivative":{"underlying":"Common Stock","underlying_shares":22582},"source":{"system":"sec-edgar","filing":"0001628280-26-015349","document":"wk-form4_1772748865.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/874501/000162828026015349/wk-form4_1772748865.xml","form_type":"4"}},{"id":859830,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2026-03-05T22:14:27.000Z","date":"2026-03-03","kind":"exercise","planned":false,"acquired":false,"shares":47130,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each RSU represents a contingent right to receive one share of the Company's common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Represents the aggregate amount of RSUs that vested."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Represents the aggregate amount of RSUs that vested."}],"balance_after":466487,"derivative":{"underlying":"Common Stock","underlying_shares":47130},"source":{"system":"sec-edgar","filing":"0001628280-26-015349","document":"wk-form4_1772748865.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/874501/000162828026015349/wk-form4_1772748865.xml","form_type":"4"}},{"id":859829,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-03-05T22:14:27.000Z","date":"2026-03-03","kind":"tax_withholding","planned":false,"acquired":false,"shares":10694,"price":5.6,"value":59886.4,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents the amount of RSUs that were converted into shares of common stock and withheld by the Company to satisfy certain tax withholding obligations."}],"balance_after":1047631,"source":{"system":"sec-edgar","filing":"0001628280-26-015349","document":"wk-form4_1772748865.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/874501/000162828026015349/wk-form4_1772748865.xml","form_type":"4"}},{"id":859828,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-03-05T22:14:27.000Z","date":"2026-03-03","kind":"exercise","planned":false,"acquired":true,"shares":24548,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The reporting person acquired shares of common stock of Octave Specialty Group, Inc. (the \"Company\") upon the vesting and settlement of a portion of the reporting person's 2023 and 2024 restrictive stock unit (\"RSU\") awards."}],"balance_after":1058325,"source":{"system":"sec-edgar","filing":"0001628280-26-015349","document":"wk-form4_1772748865.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/874501/000162828026015349/wk-form4_1772748865.xml","form_type":"4"}},{"id":953789,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-01-05T21:24:37.000Z","date":"2026-01-02","kind":"purchase","planned":false,"acquired":true,"shares":12000,"price":7.59,"value":91080.0,"ownership":{"direct":true},"balance_after":1033777,"source":{"system":"sec-edgar","filing":"0001380820-26-000001","document":"wk-form4_1767648273.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/874501/000138082026000001/wk-form4_1767648273.xml","form_type":"4"}},{"id":1025801,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2025-10-03T21:02:27.000Z","date":"2025-10-03","kind":"grant","planned":false,"acquired":true,"shares":232816,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each restricted stock unit (\"RSU\") represents a contingent right to receive one share of the common stock of the Company."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"On October 3, 2025 the reporting person received a special RSU grant that will vest and become non-forfeitable after one year (subject to limited exceptions), but will not settle until the earlier of the fifth (5) year anniversary of the grant date or the reporting person's termination date, provided such termination occurs after the one year vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"On October 3, 2025 the reporting person received a special RSU grant that will vest and become non-forfeitable after one year (subject to limited exceptions), but will not settle until the earlier of the fifth (5) year anniversary of the grant date or the reporting person's termination date, provided such termination occurs after the one year vesting date."}],"balance_after":513617,"derivative":{"underlying":"Common Stock","underlying_shares":232816},"source":{"system":"sec-edgar","filing":"0001628280-25-044149","document":"wk-form4a_1759525344.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/874501/000162828025044149/wk-form4a_1759525344.xml","form_type":"4/A","original_submission_date":"2025-10-03"}},{"id":1025800,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2025-10-03T21:02:27.000Z","date":"2025-10-03","kind":"grant","planned":false,"acquired":true,"shares":45650,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each restricted stock unit (\"RSU\") represents a contingent right to receive one share of the common stock of the Company."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"On October 3, 2025 the reporting person received a grant of 45,650 RSUs to replace a portion of the July 2025 Long Term Incentive Plan award previously determined to be void ab initio. These RSUs will vest in three equal annual installments commencing October 3, 2026, July 9, 2027, and July 9, 2028."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"On October 3, 2025 the reporting person received a grant of 45,650 RSUs to replace a portion of the July 2025 Long Term Incentive Plan award previously determined to be void ab initio. These RSUs will vest in three equal annual installments commencing October 3, 2026, July 9, 2027, and July 9, 2028."}],"balance_after":280801,"derivative":{"underlying":"Common Stock","underlying_shares":45650},"source":{"system":"sec-edgar","filing":"0001628280-25-044149","document":"wk-form4a_1759525344.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/874501/000162828025044149/wk-form4a_1759525344.xml","form_type":"4/A","original_submission_date":"2025-10-03"}},{"id":1025799,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Performance Stock Option","published_at":"2025-10-03T21:02:27.000Z","date":"2025-10-03","kind":"grant","planned":false,"acquired":true,"shares":500000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The Performance Stock Option shall be eligible to vest beginning one year after the grant date based on Ambac Financial Group, Inc.'s (the \"Company\") achievement of the certain price hurdles related to the shares of Common Stock, during the five (5) year period following the grant date as follows: (i) 40 % shall vest on the date on which the sustained stock price first exceeds $18.00 per share; (ii) 20% shall vest on the date on which the sustained stock price first exceeds $21.50 per share; (iii) 20% shall vest on the date on which the sustained stock price first exceeds $25.00 per share; and (iv) 20% shall vest on the date on which the sustained stock price first exceeds $30.00 per share."}],"balance_after":500000,"derivative":{"exercise_price":8.97,"expiration_date":"2035-10-03","underlying":"Common Stock","underlying_shares":500000},"source":{"system":"sec-edgar","filing":"0001628280-25-044149","document":"wk-form4a_1759525344.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/874501/000162828025044149/wk-form4a_1759525344.xml","form_type":"4/A","original_submission_date":"2025-10-03"}},{"id":1025790,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2025-10-03T20:19:01.000Z","date":"2025-10-03","kind":"grant","planned":false,"acquired":true,"shares":232816,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each restricted stock unit (\"RSU\") represents a contingent right to receive one share of the common stock of the Company."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"On October 3, 2025 the reporting person received a special RSU grant that will vest and become non-forfeitable after one year (subject to limited exceptions), but will not settle until the earlier of the fifth (5) year anniversary of the grant date or the reporting person's termination date, provided such termination occurs after the one year vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"On October 3, 2025 the reporting person received a special RSU grant that will vest and become non-forfeitable after one year (subject to limited exceptions), but will not settle until the earlier of the fifth (5) year anniversary of the grant date or the reporting person's termination date, provided such termination occurs after the one year vesting date."}],"balance_after":513617,"derivative":{"underlying":"Common Stock","underlying_shares":232816},"source":{"system":"sec-edgar","filing":"0001628280-25-044056","document":"wk-form4_1759522738.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/874501/000162828025044056/wk-form4_1759522738.xml","form_type":"4"}},{"id":1025789,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2025-10-03T20:19:01.000Z","date":"2025-10-03","kind":"grant","planned":false,"acquired":true,"shares":45650,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each restricted stock unit (\"RSU\") represents a contingent right to receive one share of the common stock of the Company."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"On October 3, 2025 the reporting person received a grant of 45,650 RSUs to replace a portion of the July 2025 Long Term Incentive Plan award previously determined to be void ab initio. These RSUs will vest in three equal annual installments commencing October 3, 2026, July 9, 2027, and July 9, 2028."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"On October 3, 2025 the reporting person received a grant of 45,650 RSUs to replace a portion of the July 2025 Long Term Incentive Plan award previously determined to be void ab initio. These RSUs will vest in three equal annual installments commencing October 3, 2026, July 9, 2027, and July 9, 2028."}],"balance_after":280801,"derivative":{"underlying":"Common Stock","underlying_shares":45650},"source":{"system":"sec-edgar","filing":"0001628280-25-044056","document":"wk-form4_1759522738.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/874501/000162828025044056/wk-form4_1759522738.xml","form_type":"4"}},{"id":1025788,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Performance Stock Option","published_at":"2025-10-03T20:19:01.000Z","date":"2025-10-03","kind":"grant","planned":false,"acquired":true,"shares":500000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The Performance Stock Option shall be eligible to vest beginning one year after the grant date based on Ambac Financial Group, Inc.'s (the \"Company\") achievement of the certain price hurdles related to the shares of Common Stock, during the five (5) year period following the grant date as follows: (i) 40 % shall vest on the date on which the sustained stock price first exceeds $18.00 per share; (ii) 20% shall vest on the date on which the sustained stock price first exceeds $21.50 per share; (iii) 20% shall vest on the date on which the sustained stock price first exceeds $25.00 per share; and (iv) 20% shall vest on the date on which the sustained stock price first exceeds $30.00 per share."}],"balance_after":500000,"derivative":{"exercise_price":8.93,"expiration_date":"2035-10-03","underlying":"Common Stock","underlying_shares":500000},"source":{"system":"sec-edgar","filing":"0001628280-25-044056","document":"wk-form4_1759522738.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/874501/000162828025044056/wk-form4_1759522738.xml","form_type":"4"}},{"id":1025786,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2025-10-03T20:18:11.000Z","date":"2025-07-09","kind":"grant","planned":false,"acquired":true,"shares":118045,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit (\"RSU\") represents a contingent right to receive one share of the common stock of Ambac Financial Group, Inc. (the \"Company\")."},{"field":"shares","element":"transactionShares","label":"F2","text":"This amendment reports the corrected number of RSUs granted to the reporting person on July 9, 2025.  At that time, 45,650 of the RSUs previously reported on that date were void ab initio and cancelled."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The RSUs will vest in three equal annual installments commencing  July 9, 2026, July 9, 2027, and July 9, 2028."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The RSUs will vest in three equal annual installments commencing  July 9, 2026, July 9, 2027, and July 9, 2028."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F2","text":"This amendment reports the corrected number of RSUs granted to the reporting person on July 9, 2025.  At that time, 45,650 of the RSUs previously reported on that date were void ab initio and cancelled."}],"balance_after":189501,"derivative":{"underlying":"Common Stock","underlying_shares":118045},"source":{"system":"sec-edgar","filing":"0001628280-25-044052","document":"wk-form4a_1759522686.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/874501/000162828025044052/wk-form4a_1759522686.xml","form_type":"4/A","original_submission_date":"2025-07-09"}},{"id":1029997,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Deferred Share Units","published_at":"2025-10-01T20:58:02.000Z","date":"2025-09-30","kind":"grant","planned":false,"acquired":true,"shares":174961,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F5","text":"Each DSU represents a contingent right to receive one share of common stock of the Company."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"Represents the aggregate amount of performance stock units (\"PSUs\") that were converted into an equivalent number of DSUs pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of PSU and restricted stock unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"Represents the aggregate amount of performance stock units (\"PSUs\") that were converted into an equivalent number of DSUs pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of PSU and restricted stock unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended."}],"balance_after":174961,"derivative":{"underlying":"Common Stock","underlying_shares":174961},"source":{"system":"sec-edgar","filing":"0001628280-25-043480","document":"wk-form4_1759352279.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/874501/000162828025043480/wk-form4_1759352279.xml","form_type":"4"}},{"id":1029996,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Deferred Share Units","published_at":"2025-10-01T20:58:02.000Z","date":"2025-09-29","kind":"exercise","planned":false,"acquired":false,"shares":661355,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F5","text":"Each DSU represents a contingent right to receive one share of common stock of the Company."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Upon the closing of the sale of Ambac Assurance Corporation by Ambac Financial Group to an entity owned by funds managed by Oaktree Capital Management, L.P., a change of control was triggered causing the Reporting Person's Deferred Share Units (\"DSUs\") to vest and settle."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Upon the closing of the sale of Ambac Assurance Corporation by Ambac Financial Group to an entity owned by funds managed by Oaktree Capital Management, L.P., a change of control was triggered causing the Reporting Person's Deferred Share Units (\"DSUs\") to vest and settle."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":661355},"source":{"system":"sec-edgar","filing":"0001628280-25-043480","document":"wk-form4_1759352279.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/874501/000162828025043480/wk-form4_1759352279.xml","form_type":"4"}},{"id":1029995,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-10-01T20:58:02.000Z","date":"2025-10-01","kind":"purchase","planned":false,"acquired":true,"shares":25000,"price":8.54,"value":213500.0,"ownership":{"direct":true},"balance_after":1021777,"source":{"system":"sec-edgar","filing":"0001628280-25-043480","document":"wk-form4_1759352279.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/874501/000162828025043480/wk-form4_1759352279.xml","form_type":"4"}},{"id":1029994,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-10-01T20:58:02.000Z","date":"2025-09-30","kind":"tax_withholding","planned":false,"acquired":false,"shares":111034,"price":8.34,"value":926023.56,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents the aggregate amount of PSUs that were converted into shares of common stock and withheld by the Company to satisfy certain tax withholding obligations."}],"balance_after":996777,"source":{"system":"sec-edgar","filing":"0001628280-25-043480","document":"wk-form4_1759352279.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/874501/000162828025043480/wk-form4_1759352279.xml","form_type":"4"}},{"id":1029993,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-10-01T20:58:02.000Z","date":"2025-09-30","kind":"exercise","planned":false,"acquired":true,"shares":193353,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"On September 30, 2025 the Compensation Committee of the Board of Directors of Ambac Financial Group approved the acceleration of the Reporting Person's 2023 and 2024 Performance Stock Unit (\"PSUs\") awards in connection with the change of control referred to in footnote 1.  The reporting person acquired shares of common stock of Ambac Financial Group, Inc. (the \"Company\") upon the simultaneous vesting and settlement of the reporting person's 2023 and 2024 Long Term Incentive Plan PSU awards."}],"balance_after":1107811,"source":{"system":"sec-edgar","filing":"0001628280-25-043480","document":"wk-form4_1759352279.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/874501/000162828025043480/wk-form4_1759352279.xml","form_type":"4"}},{"id":1029992,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-10-01T20:58:02.000Z","date":"2025-09-29","kind":"tax_withholding","planned":false,"acquired":false,"shares":350188,"price":9.72,"value":3403827.36,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents the amount of DSUs that were converted into shares of common stock and withheld by the Company to satisfy certain tax withholding obligations."}],"balance_after":914458,"source":{"system":"sec-edgar","filing":"0001628280-25-043480","document":"wk-form4_1759352279.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/874501/000162828025043480/wk-form4_1759352279.xml","form_type":"4"}},{"id":1029991,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-10-01T20:58:02.000Z","date":"2025-09-29","kind":"exercise","planned":false,"acquired":true,"shares":661355,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Upon the closing of the sale of Ambac Assurance Corporation by Ambac Financial Group to an entity owned by funds managed by Oaktree Capital Management, L.P., a change of control was triggered causing the Reporting Person's Deferred Share Units (\"DSUs\") to vest and settle."}],"balance_after":1264646,"source":{"system":"sec-edgar","filing":"0001628280-25-043480","document":"wk-form4_1759352279.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/874501/000162828025043480/wk-form4_1759352279.xml","form_type":"4"}},{"id":1070844,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-08-11T20:07:45.000Z","date":"2025-08-11","kind":"purchase","planned":false,"acquired":true,"shares":25000,"price":7.03,"value":175750.0,"ownership":{"direct":true},"balance_after":603291,"source":{"system":"sec-edgar","filing":"0000874501-25-000133","document":"wk-form4_1754942860.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450125000133/wk-form4_1754942860.xml","form_type":"4"}},{"id":1090313,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2025-07-09T20:24:27.000Z","date":"2025-07-09","kind":"grant","planned":false,"acquired":true,"shares":163695,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit (\"RSU\") represents a contingent right to receive one share of the common stock of Ambac Financial Group, Inc. (the \"Company\")."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"On July 9, 2025 the reporting person received a grant of 163,695 restricted stock units (\"RSUs\") as part of their 2025 Long Term Incentive Plan award. The RSUs will vest in three equal annual installments commencing July 9, 2026, July 9, 2027, and July 9, 2028."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"On July 9, 2025 the reporting person received a grant of 163,695 restricted stock units (\"RSUs\") as part of their 2025 Long Term Incentive Plan award. The RSUs will vest in three equal annual installments commencing July 9, 2026, July 9, 2027, and July 9, 2028."}],"balance_after":235151,"derivative":{"underlying":"Common Stock","underlying_shares":163695},"source":{"system":"sec-edgar","filing":"0000874501-25-000127","document":"wk-form4_1752092661.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450125000127/wk-form4_1752092661.xml","form_type":"4"}},{"id":1149995,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-05-14T20:00:13.000Z","date":"2025-05-14","kind":"purchase","planned":false,"acquired":true,"shares":40000,"price":6.5,"value":260000.0,"ownership":{"direct":true},"balance_after":578291,"source":{"system":"sec-edgar","filing":"0000874501-25-000088","document":"wk-form4_1747252807.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450125000088/wk-form4_1747252807.xml","form_type":"4"}},{"id":1206804,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2025-03-14T20:37:11.000Z","date":"2025-03-13","kind":"exercise","planned":false,"acquired":false,"shares":24327,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each RSU represents a contingent right to receive one share of the Company's common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Represents the aggregate amount of restricted stock units (\"RSUs\") that were converted into shares of common stock of Ambac Financial Group, Inc. (the \"Company\") upon settlement of a portion of the reporting person's 2024 Long Term Incentive Plan award."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Represents the aggregate amount of restricted stock units (\"RSUs\") that were converted into shares of common stock of Ambac Financial Group, Inc. (the \"Company\") upon settlement of a portion of the reporting person's 2024 Long Term Incentive Plan award."}],"balance_after":71456,"derivative":{"underlying":"Common Stock","underlying_shares":24327},"source":{"system":"sec-edgar","filing":"0000874501-25-000054","document":"wk-form4_1741984619.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450125000054/wk-form4_1741984619.xml","form_type":"4"}},{"id":1206803,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-03-14T20:37:11.000Z","date":"2025-03-13","kind":"tax_withholding","planned":false,"acquired":false,"shares":13452,"price":8.39,"value":112862.28,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents the amount of RSUs that were converted into shares of common stock and withheld by the Company to satisfy certain tax withholding obligations."}],"balance_after":538291,"source":{"system":"sec-edgar","filing":"0000874501-25-000054","document":"wk-form4_1741984619.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450125000054/wk-form4_1741984619.xml","form_type":"4"}},{"id":1206802,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-03-14T20:37:11.000Z","date":"2025-03-13","kind":"exercise","planned":false,"acquired":true,"shares":24327,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the aggregate amount of restricted stock units (\"RSUs\") that were converted into shares of common stock of Ambac Financial Group, Inc. (the \"Company\") upon settlement of a portion of the reporting person's 2024 Long Term Incentive Plan award."}],"balance_after":551743,"source":{"system":"sec-edgar","filing":"0000874501-25-000054","document":"wk-form4_1741984619.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450125000054/wk-form4_1741984619.xml","form_type":"4"}},{"id":1216312,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Deferred Share Units","published_at":"2025-03-10T20:29:36.000Z","date":"2025-03-06","kind":"grant","planned":false,"acquired":true,"shares":274612,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F3","text":"Each deferred share unit (\"DSU\") represents a contingent right to receive one share of common stock of the Company."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each deferred share unit (\"DSU\") represents a contingent right to receive one share of common stock of the Company."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Represents the aggregate amount of performance stock units (\"PSUs\") that were converted into an equivalent number of DSUs pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of PSU and restricted stock unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Represents the aggregate amount of performance stock units (\"PSUs\") that were converted into an equivalent number of DSUs pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of PSU and restricted stock unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended."}],"balance_after":661355,"derivative":{"underlying":"Common Stock","underlying_shares":274612},"source":{"system":"sec-edgar","filing":"0000874501-25-000046","document":"wk-form4_1741638569.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450125000046/wk-form4_1741638569.xml","form_type":"4"}},{"id":1216311,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-03-10T20:29:36.000Z","date":"2025-03-06","kind":"tax_withholding","planned":false,"acquired":false,"shares":10809,"price":9.16,"value":99010.44,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"As part of the vesting and settlement of a portion of  the 2022 LTIP award, 10,809 shares of common stock were withheld by the Company to satisfy certain tax withholding obligations."}],"balance_after":527416,"source":{"system":"sec-edgar","filing":"0000874501-25-000046","document":"wk-form4_1741638569.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450125000046/wk-form4_1741638569.xml","form_type":"4"}},{"id":1216310,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-03-10T20:29:36.000Z","date":"2025-03-06","kind":"grant","planned":false,"acquired":true,"shares":10809,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The reporting person acquired 10,809 shares of common stock of Ambac Financial Group, Inc. (the \"Company\") upon the simultaneous vesting and settlement of a portion of the reporting person's 2022 Long Term Incentive Plan award, which had a three year performance period and vested on March 6, 2025."}],"balance_after":538225,"source":{"system":"sec-edgar","filing":"0000874501-25-000046","document":"wk-form4_1741638569.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450125000046/wk-form4_1741638569.xml","form_type":"4"}},{"id":1232408,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Deferred Share Units","published_at":"2025-03-04T23:22:43.000Z","date":"2025-03-03","kind":"exercise","planned":false,"acquired":true,"shares":22576,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"Each deferred share unit (\"DSU\") represents a contingent right to receive one share of common stock of the Company."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Each deferred share unit (\"DSU\") represents a contingent right to receive one share of common stock of the Company."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Represents the aggregate amount of RSUs that were converted into an equivalent number of deferred share units (\"DSUs\") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"Represents the aggregate amount of RSUs that were converted into an equivalent number of deferred share units (\"DSUs\") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended."}],"balance_after":386743,"derivative":{"underlying":"Common Stock","underlying_shares":22576},"source":{"system":"sec-edgar","filing":"0000874501-25-000023","document":"wk-form4_1741130557.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450125000023/wk-form4_1741130557.xml","form_type":"4"}},{"id":1232407,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2025-03-04T23:22:43.000Z","date":"2025-03-03","kind":"exercise","planned":false,"acquired":false,"shares":23464,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit (\"RSU\") represents a contingent right to receive one share of the common stock of Ambac Financial Group, Inc. (the \"Company\")."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit (\"RSU\") represents a contingent right to receive one share of the common stock of Ambac Financial Group, Inc. (the \"Company\")."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"Represents the amount of RSUs that were converted into shares of common stock of the Company upon settlement of a portion of the reporting person's 2023 Long Term Incentive Plan  award."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"Represents the amount of RSUs that were converted into shares of common stock of the Company upon settlement of a portion of the reporting person's 2023 Long Term Incentive Plan  award."}],"balance_after":95783,"derivative":{"underlying":"Common Stock","underlying_shares":23464},"source":{"system":"sec-edgar","filing":"0000874501-25-000023","document":"wk-form4_1741130557.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450125000023/wk-form4_1741130557.xml","form_type":"4"}},{"id":1232406,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Deferred Share Units","published_at":"2025-03-04T23:22:43.000Z","date":"2025-02-28","kind":"exercise","planned":false,"acquired":true,"shares":24610,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"Each deferred share unit (\"DSU\") represents a contingent right to receive one share of common stock of the Company."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Each deferred share unit (\"DSU\") represents a contingent right to receive one share of common stock of the Company."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Represents the aggregate amount of RSUs that were converted into an equivalent number of deferred share units (\"DSUs\") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"Represents the aggregate amount of RSUs that were converted into an equivalent number of deferred share units (\"DSUs\") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended."}],"balance_after":364167,"derivative":{"underlying":"Common Stock","underlying_shares":24610},"source":{"system":"sec-edgar","filing":"0000874501-25-000023","document":"wk-form4_1741130557.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450125000023/wk-form4_1741130557.xml","form_type":"4"}},{"id":1232405,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2025-03-04T23:22:43.000Z","date":"2025-02-28","kind":"exercise","planned":false,"acquired":false,"shares":25762,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit (\"RSU\") represents a contingent right to receive one share of the common stock of Ambac Financial Group, Inc. (the \"Company\")."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit (\"RSU\") represents a contingent right to receive one share of the common stock of Ambac Financial Group, Inc. (the \"Company\")."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Represents the amount of RSUs that vested upon settlement of a portion of the reporting person's 2022 Long Term Incentive Plan award."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Represents the amount of RSUs that vested upon settlement of a portion of the reporting person's 2022 Long Term Incentive Plan award."}],"balance_after":119247,"derivative":{"underlying":"Common Stock","underlying_shares":25762},"source":{"system":"sec-edgar","filing":"0000874501-25-000023","document":"wk-form4_1741130557.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450125000023/wk-form4_1741130557.xml","form_type":"4"}},{"id":1232404,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-03-04T23:22:43.000Z","date":"2025-03-03","kind":"tax_withholding","planned":false,"acquired":false,"shares":888,"price":9.3,"value":8258.4,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F2","text":"Represents the amount of RSUs that were converted into shares of common stock and withheld by the Company to satisfy certain tax withholding obligations."}],"balance_after":527416,"source":{"system":"sec-edgar","filing":"0000874501-25-000023","document":"wk-form4_1741130557.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450125000023/wk-form4_1741130557.xml","form_type":"4"}},{"id":1232403,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-03-04T23:22:43.000Z","date":"2025-03-03","kind":"exercise","planned":false,"acquired":true,"shares":888,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F1","text":"Each restricted stock unit (\"RSU\") represents a contingent right to receive one share of the common stock of Ambac Financial Group, Inc. (the \"Company\")."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit (\"RSU\") represents a contingent right to receive one share of the common stock of Ambac Financial Group, Inc. (the \"Company\")."}],"balance_after":528304,"source":{"system":"sec-edgar","filing":"0000874501-25-000023","document":"wk-form4_1741130557.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450125000023/wk-form4_1741130557.xml","form_type":"4"}},{"id":1232402,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-03-04T23:22:43.000Z","date":"2025-02-28","kind":"tax_withholding","planned":false,"acquired":false,"shares":1152,"price":9.71,"value":11185.92,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F2","text":"Represents the amount of RSUs that were converted into shares of common stock and withheld by the Company to satisfy certain tax withholding obligations."}],"balance_after":527416,"source":{"system":"sec-edgar","filing":"0000874501-25-000023","document":"wk-form4_1741130557.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450125000023/wk-form4_1741130557.xml","form_type":"4"}},{"id":1232401,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-03-04T23:22:43.000Z","date":"2025-02-28","kind":"exercise","planned":false,"acquired":true,"shares":1152,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F1","text":"Each restricted stock unit (\"RSU\") represents a contingent right to receive one share of the common stock of Ambac Financial Group, Inc. (the \"Company\")."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit (\"RSU\") represents a contingent right to receive one share of the common stock of Ambac Financial Group, Inc. (the \"Company\")."}],"balance_after":528568,"source":{"system":"sec-edgar","filing":"0000874501-25-000023","document":"wk-form4_1741130557.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450125000023/wk-form4_1741130557.xml","form_type":"4"}},{"id":1438157,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2024-08-08T20:37:57.000Z","date":"2024-08-07","kind":"purchase","planned":false,"acquired":true,"shares":700,"price":10.6,"value":7420.0,"ownership":{"direct":true},"balance_after":527416,"source":{"system":"sec-edgar","filing":"0000874501-24-000187","document":"wk-form4_1723149471.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450124000187/wk-form4_1723149471.xml","form_type":"4"}},{"id":1438156,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2024-08-08T20:37:57.000Z","date":"2024-08-07","kind":"purchase","planned":false,"acquired":true,"shares":47,"price":10.64,"value":500.08,"ownership":{"direct":true},"balance_after":526716,"source":{"system":"sec-edgar","filing":"0000874501-24-000187","document":"wk-form4_1723149471.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450124000187/wk-form4_1723149471.xml","form_type":"4"}},{"id":1438155,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2024-08-08T20:37:57.000Z","date":"2024-08-07","kind":"purchase","planned":false,"acquired":true,"shares":10953,"price":11,"value":120483.0,"ownership":{"direct":true},"balance_after":526669,"source":{"system":"sec-edgar","filing":"0000874501-24-000187","document":"wk-form4_1723149471.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450124000187/wk-form4_1723149471.xml","form_type":"4"}},{"id":1438154,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2024-08-08T20:37:57.000Z","date":"2024-08-07","kind":"purchase","planned":false,"acquired":true,"shares":1027,"price":10.85,"value":11142.95,"ownership":{"direct":true},"balance_after":515716,"source":{"system":"sec-edgar","filing":"0000874501-24-000187","document":"wk-form4_1723149471.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450124000187/wk-form4_1723149471.xml","form_type":"4"}},{"id":1438153,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2024-08-08T20:37:57.000Z","date":"2024-08-07","kind":"purchase","planned":false,"acquired":true,"shares":12273,"price":10.7,"value":131321.1,"ownership":{"direct":true},"balance_after":514689,"source":{"system":"sec-edgar","filing":"0000874501-24-000187","document":"wk-form4_1723149471.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450124000187/wk-form4_1723149471.xml","form_type":"4"}},{"id":1575616,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2024-03-15T20:12:25.000Z","date":"2024-03-13","kind":"grant","planned":false,"acquired":true,"shares":72313,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit (\"RSU\") represents a contingent right to receive one share of the common stock of Ambac Financial Group, Inc. (the \"Company\")."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"On March 13, 2024 the reporting person received a grant of 72,313 RSUs as part of their 2024 Long Term Incentive Plan award. The RSUs will vest in three equal annual installments commencing March 13, 2025, March 3, 2026, and March 3, 2027."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"On March 13, 2024 the reporting person received a grant of 72,313 RSUs as part of their 2024 Long Term Incentive Plan award. The RSUs will vest in three equal annual installments commencing March 13, 2025, March 3, 2026, and March 3, 2027."}],"balance_after":145009,"derivative":{"underlying":"Common Stock","underlying_shares":72313},"source":{"system":"sec-edgar","filing":"0000874501-24-000099","document":"wk-form4_1710533514.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450124000099/wk-form4_1710533514.xml","form_type":"4"}},{"id":1585291,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Deferred Share Units","published_at":"2024-03-11T20:28:50.000Z","date":"2024-03-08","kind":"grant","planned":false,"acquired":true,"shares":30313,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F6","text":"Each DSU represents a contingent right to receive one share of common stock of the Company."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Represents the aggregate amount of RSUs that were converted into an equivalent number of deferred share units (\"DSUs\") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and Performance Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"Represents the aggregate amount of RSUs that were converted into an equivalent number of deferred share units (\"DSUs\") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and Performance Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended."}],"balance_after":339557,"derivative":{"underlying":"Common Stock","underlying_shares":30313},"source":{"system":"sec-edgar","filing":"0000874501-24-000085","document":"wk-form4_1710188822.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450124000085/wk-form4_1710188822.xml","form_type":"4"}},{"id":1585290,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2024-03-11T20:28:50.000Z","date":"2024-03-08","kind":"exercise","planned":false,"acquired":false,"shares":30313,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each restricted stock unit (\"RSUs\") represents a contingent right to receive one share of the common stock of the Company."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Represents the aggregate amount of RSUs that were converted into an equivalent number of deferred share units (\"DSUs\") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and Performance Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"Represents the aggregate amount of RSUs that were converted into an equivalent number of deferred share units (\"DSUs\") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and Performance Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended."}],"balance_after":72696,"derivative":{"underlying":"Common Stock","underlying_shares":30313},"source":{"system":"sec-edgar","filing":"0000874501-24-000085","document":"wk-form4_1710188822.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450124000085/wk-form4_1710188822.xml","form_type":"4"}},{"id":1585289,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2024-03-11T20:28:50.000Z","date":"2024-03-08","kind":"exercise","planned":false,"acquired":false,"shares":1193,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each restricted stock unit (\"RSUs\") represents a contingent right to receive one share of the common stock of the Company."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Represents the amount of RSUs that were converted into shares of common stock of the Company upon settlement of a portion of the reporting person's 2021 RSU LTIP award."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Represents the amount of RSUs that were converted into shares of common stock of the Company upon settlement of a portion of the reporting person's 2021 RSU LTIP award."}],"balance_after":103009,"derivative":{"underlying":"Common Stock","underlying_shares":1193},"source":{"system":"sec-edgar","filing":"0000874501-24-000085","document":"wk-form4_1710188822.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450124000085/wk-form4_1710188822.xml","form_type":"4"}},{"id":1585288,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2024-03-11T20:28:50.000Z","date":"2024-03-08","kind":"tax_withholding","planned":false,"acquired":false,"shares":1193,"price":15.38,"value":18348.34,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"As part of the vesting and settlement of a portion of  the 2021 RSU LTIP award, 1,193 shares of common stock were withheld by the Company to satisfy certain tax withholding obligations."}],"balance_after":502416,"source":{"system":"sec-edgar","filing":"0000874501-24-000085","document":"wk-form4_1710188822.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450124000085/wk-form4_1710188822.xml","form_type":"4"}},{"id":1585287,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2024-03-11T20:28:50.000Z","date":"2024-03-08","kind":"exercise","planned":false,"acquired":true,"shares":1193,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The reporting person acquired 1,193 shares of common stock of Ambac Financial Group, Inc. (the \"Company\") upon the vesting and settlement of a portion of the reporting person's 2021 restrictive stock unit Long Term Incentive Plan (\"2021 RSU LTIP\") award."}],"balance_after":503609,"source":{"system":"sec-edgar","filing":"0000874501-24-000085","document":"wk-form4_1710188822.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450124000085/wk-form4_1710188822.xml","form_type":"4"}},{"id":1604819,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Deferred Share Units","published_at":"2024-03-04T22:46:02.000Z","date":"2024-03-03","kind":"grant","planned":false,"acquired":true,"shares":22576,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F6","text":"Each DSU represents a contingent right to receive one share of common stock of the Company."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Represents the aggregate amount of RSUs that were converted into an equivalent number of deferred share units (\"DSUs\") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and Performance Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"Represents the aggregate amount of RSUs that were converted into an equivalent number of deferred share units (\"DSUs\") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and Performance Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended."}],"balance_after":309244,"derivative":{"underlying":"Common Stock","underlying_shares":22576},"source":{"system":"sec-edgar","filing":"0000874501-24-000071","document":"wk-form4_1709592338.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450124000071/wk-form4_1709592338.xml","form_type":"4"}},{"id":1604818,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2024-03-04T22:46:02.000Z","date":"2024-03-03","kind":"exercise","planned":false,"acquired":false,"shares":22576,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each restricted stock unit (\"RSUs\") represents a contingent right to receive one share of the common stock of the Company."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Represents the aggregate amount of RSUs that were converted into an equivalent number of deferred share units (\"DSUs\") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and Performance Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"Represents the aggregate amount of RSUs that were converted into an equivalent number of deferred share units (\"DSUs\") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and Performance Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended."}],"balance_after":104202,"derivative":{"underlying":"Common Stock","underlying_shares":22576},"source":{"system":"sec-edgar","filing":"0000874501-24-000071","document":"wk-form4_1709592338.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450124000071/wk-form4_1709592338.xml","form_type":"4"}},{"id":1604817,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2024-03-04T22:46:02.000Z","date":"2024-03-03","kind":"exercise","planned":false,"acquired":false,"shares":888,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each restricted stock unit (\"RSUs\") represents a contingent right to receive one share of the common stock of the Company."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Represents the amount of RSUs that were converted into shares of common stock of the Company upon settlement of a portion of the reporting person's 2023 RSU LTIP award."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Represents the amount of RSUs that were converted into shares of common stock of the Company upon settlement of a portion of the reporting person's 2023 RSU LTIP award."}],"balance_after":126778,"derivative":{"underlying":"Common Stock","underlying_shares":888},"source":{"system":"sec-edgar","filing":"0000874501-24-000071","document":"wk-form4_1709592338.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450124000071/wk-form4_1709592338.xml","form_type":"4"}},{"id":1604816,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2024-03-04T22:46:02.000Z","date":"2024-03-03","kind":"tax_withholding","planned":false,"acquired":false,"shares":888,"price":16.19,"value":14376.72,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"As part of the vesting and settlement of a portion of the 2023 RSU LTIP award, 888 shares of common stock were withheld by the Company to satisfy certain tax withholding obligations."}],"balance_after":502416,"source":{"system":"sec-edgar","filing":"0000874501-24-000071","document":"wk-form4_1709592338.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450124000071/wk-form4_1709592338.xml","form_type":"4"}},{"id":1604815,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2024-03-04T22:46:02.000Z","date":"2024-03-03","kind":"exercise","planned":false,"acquired":true,"shares":888,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The reporting person acquired 888 shares of common stock of Ambac Financial Group, Inc. (the \"Company\") upon the vesting and settlement of a portion of the reporting person's 2023 restrictive stock unit Long Term Incentive Plan (\"2023 RSU LTIP\") award."}],"balance_after":503304,"source":{"system":"sec-edgar","filing":"0000874501-24-000071","document":"wk-form4_1709592338.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450124000071/wk-form4_1709592338.xml","form_type":"4"}},{"id":1608660,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Deferred Share Units","published_at":"2024-03-01T21:06:02.000Z","date":"2024-02-28","kind":"grant","planned":false,"acquired":true,"shares":24780,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F6","text":"Each DSU represents a contingent right to receive one share of common stock of the Company."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Represents the aggregate amount of RSUs that were converted into an equivalent number of deferred share units (\"DSUs\") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and performance stock unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"Represents the aggregate amount of RSUs that were converted into an equivalent number of deferred share units (\"DSUs\") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and performance stock unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended."}],"balance_after":286668,"derivative":{"underlying":"Common Stock","underlying_shares":24780},"source":{"system":"sec-edgar","filing":"0000874501-24-000054","document":"wk-form4_1709327149.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450124000054/wk-form4_1709327149.xml","form_type":"4"}},{"id":1608659,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2024-03-01T21:06:02.000Z","date":"2024-02-28","kind":"exercise","planned":false,"acquired":false,"shares":24780,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each restricted stock unit (\"RSU\") represents a contingent right to receive one share of the Company's common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Represents the aggregate amount of RSUs that were converted into an equivalent number of deferred share units (\"DSUs\") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and performance stock unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"Represents the aggregate amount of RSUs that were converted into an equivalent number of deferred share units (\"DSUs\") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and performance stock unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended."}],"balance_after":127666,"derivative":{"underlying":"Common Stock","underlying_shares":24780},"source":{"system":"sec-edgar","filing":"0000874501-24-000054","document":"wk-form4_1709327149.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450124000054/wk-form4_1709327149.xml","form_type":"4"}},{"id":1608658,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2024-03-01T21:06:02.000Z","date":"0024-02-28","kind":"exercise","planned":false,"acquired":false,"shares":975,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each restricted stock unit (\"RSU\") represents a contingent right to receive one share of the Company's common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Represents the aggregate amount of RSUs that were converted into shares of common stock of the Company upon settlement of a portion of the reporting person's 2022 RSU LTIP award."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Represents the aggregate amount of RSUs that were converted into shares of common stock of the Company upon settlement of a portion of the reporting person's 2022 RSU LTIP award."}],"balance_after":152446,"derivative":{"underlying":"Common Stock","underlying_shares":975},"source":{"system":"sec-edgar","filing":"0000874501-24-000054","document":"wk-form4_1709327149.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450124000054/wk-form4_1709327149.xml","form_type":"4"}},{"id":1608657,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2024-03-01T21:06:02.000Z","date":"2024-02-28","kind":"tax_withholding","planned":false,"acquired":false,"shares":975,"price":16.94,"value":16516.5,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"As part of the vesting and settlement of a portion of  the 2022 RSU LTIP award, 975 shares of common stock were withheld by the Company to satisfy certain tax withholding obligations."}],"balance_after":502416,"source":{"system":"sec-edgar","filing":"0000874501-24-000054","document":"wk-form4_1709327149.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450124000054/wk-form4_1709327149.xml","form_type":"4"}},{"id":1608656,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2024-03-01T21:06:02.000Z","date":"2024-02-28","kind":"exercise","planned":false,"acquired":true,"shares":975,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The reporting person acquired 975 shares of common stock of Ambac Financial Group, Inc. (the \"Company\") upon the vesting and settlement of a portion of the reporting person's 2022 restricted stock unit Long Term Incentive Plan (\"2022 RSU LTIP\") award."}],"balance_after":503391,"source":{"system":"sec-edgar","filing":"0000874501-24-000054","document":"wk-form4_1709327149.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450124000054/wk-form4_1709327149.xml","form_type":"4"}},{"id":1623596,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Deferred Share Units","published_at":"2024-02-23T21:45:53.000Z","date":"2024-02-21","kind":"grant","planned":false,"acquired":true,"shares":207494,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F3","text":"Each deferred share unit (\"DSU\") represents a contingent right to receive one share of common stock of the Company."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each deferred share unit (\"DSU\") represents a contingent right to receive one share of common stock of the Company."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Represents the aggregate amount of performance stock units (\"PSUs\") that were converted into an equivalent number of DSUs pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of PSU and restricted stock unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Represents the aggregate amount of performance stock units (\"PSUs\") that were converted into an equivalent number of DSUs pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of PSU and restricted stock unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended."}],"balance_after":261888,"derivative":{"underlying":"Common Stock","underlying_shares":207494},"source":{"system":"sec-edgar","filing":"0000874501-24-000016","document":"wk-form4_1708724732.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450124000016/wk-form4_1708724732.xml","form_type":"4"}},{"id":1623595,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2024-02-23T21:45:53.000Z","date":"2024-02-21","kind":"tax_withholding","planned":false,"acquired":false,"shares":8257,"price":16.25,"value":134176.25,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"As part of the vesting and settlement of a portion of  the 2021 LTIP award, 8,257 shares of common stock were withheld by the Company to satisfy certain tax withholding obligations."}],"balance_after":502416,"source":{"system":"sec-edgar","filing":"0000874501-24-000016","document":"wk-form4_1708724732.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450124000016/wk-form4_1708724732.xml","form_type":"4"}},{"id":1623594,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2024-02-23T21:45:53.000Z","date":"2024-02-21","kind":"grant","planned":false,"acquired":true,"shares":8257,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The reporting person acquired 8,257 shares of common stock of Ambac Financial Group, Inc. (the \"Company\") upon the simultaneous vesting and settlement of a portion of the reporting person's 2021 Long Term Incentive Plan award, which had a three year performance period and vested on February 21, 2014."}],"balance_after":510673,"source":{"system":"sec-edgar","filing":"0000874501-24-000016","document":"wk-form4_1708724732.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450124000016/wk-form4_1708724732.xml","form_type":"4"}},{"id":1789933,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2023-09-05T13:11:16.000Z","date":"2023-09-01","kind":"purchase","planned":false,"acquired":true,"shares":2500,"price":13.29,"value":33225.0,"ownership":{"direct":true},"balance_after":502416,"source":{"system":"sec-edgar","filing":"0000874501-23-000126","document":"wk-form4_1693919467.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450123000126/wk-form4_1693919467.xml","form_type":"4"}},{"id":1961918,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Deferred Share Units","published_at":"2023-03-09T21:17:22.000Z","date":"2023-03-08","kind":"exercise","acquired":true,"shares":29925,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F6","text":"Each Deferred Share Unit (\"DSU\") represents a contingent right to receive one share of the Company's common stock."},{"field":"shares","element":"transactionShares","label":"F4","text":"Represents the aggregate amount of RSUs that were converted into an equivalent number of Deferred Share Units (\"DSUs\") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and Performance Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Represents the aggregate amount of RSUs that were converted into DSUs of the Company upon settlement of a portion of the reporting person's 2021 Long Term Incentive Plan award."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"Represents the aggregate amount of RSUs that were converted into DSUs of the Company upon settlement of a portion of the reporting person's 2021 Long Term Incentive Plan award."}],"balance_after":54394,"derivative":{"underlying":"Common Stock","underlying_shares":29925},"source":{"system":"sec-edgar","filing":"0000874501-23-000065","document":"wf-form4_167839662667458.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450123000065/wf-form4_167839662667458.xml","form_type":"4"}},{"id":1961917,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2023-03-09T21:17:22.000Z","date":"2023-03-08","kind":"exercise","acquired":false,"shares":29925,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each RSU represents a contingent right to receive one share of the common stock of the Company."},{"field":"shares","element":"transactionShares","label":"F4","text":"Represents the aggregate amount of RSUs that were converted into an equivalent number of Deferred Share Units (\"DSUs\") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and Performance Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Represents the aggregate amount of RSUs that were converted into DSUs of the Company upon settlement of a portion of the reporting person's 2021 Long Term Incentive Plan award."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"Represents the aggregate amount of RSUs that were converted into DSUs of the Company upon settlement of a portion of the reporting person's 2021 Long Term Incentive Plan award."}],"balance_after":153421,"derivative":{"underlying":"Common Stock","underlying_shares":29925},"source":{"system":"sec-edgar","filing":"0000874501-23-000065","document":"wf-form4_167839662667458.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450123000065/wf-form4_167839662667458.xml","form_type":"4"}},{"id":1961916,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2023-03-09T21:17:22.000Z","date":"2023-03-08","kind":"exercise","acquired":false,"shares":1573,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each RSU represents a contingent right to receive one share of the common stock of the Company."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Represents the aggregate number of restricted stock units (\"RSUs\") that were converted into shares of common stock of Ambac Financial Group, Inc. (the \"Company\") upon settlement of a portion of the reporting person's 2021 Long Term Incentive Plan award."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Represents the aggregate number of restricted stock units (\"RSUs\") that were converted into shares of common stock of Ambac Financial Group, Inc. (the \"Company\") upon settlement of a portion of the reporting person's 2021 Long Term Incentive Plan award."}],"balance_after":183346,"derivative":{"underlying":"Common Stock","underlying_shares":1573},"source":{"system":"sec-edgar","filing":"0000874501-23-000065","document":"wf-form4_167839662667458.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450123000065/wf-form4_167839662667458.xml","form_type":"4"}},{"id":1961915,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2023-03-09T21:17:22.000Z","date":"2023-03-08","kind":"tax_withholding","acquired":false,"shares":1573,"price":16.41,"value":25812.93,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents the aggregate number of RSUs that were converted into shares of common stock and withheld by the Company to satisfy certain tax withholding obligations."}],"balance_after":499916,"source":{"system":"sec-edgar","filing":"0000874501-23-000065","document":"wf-form4_167839662667458.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450123000065/wf-form4_167839662667458.xml","form_type":"4"}},{"id":1961914,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2023-03-09T21:17:22.000Z","date":"2023-03-08","kind":"exercise","acquired":true,"shares":1573,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the aggregate number of restricted stock units (\"RSUs\") that were converted into shares of common stock of Ambac Financial Group, Inc. (the \"Company\") upon settlement of a portion of the reporting person's 2021 Long Term Incentive Plan award."}],"balance_after":501489,"source":{"system":"sec-edgar","filing":"0000874501-23-000065","document":"wf-form4_167839662667458.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450123000065/wf-form4_167839662667458.xml","form_type":"4"}},{"id":1970282,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2023-03-06T21:14:32.000Z","date":"2023-03-03","kind":"grant","acquired":true,"shares":70398,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit (\"RSU\") represents a contingent right to receive one share of common stock of Ambac Financial Group, Inc."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"On March 3, 2023 the reporting person received a grant of 70,398 RSUs as part of their 2023 Long Term Incentive Plan award. The RSUs will vest in three equal installments on March 3, 2024, March 3, 2025, and March 3, 2026."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"On March 3, 2023 the reporting person received a grant of 70,398 RSUs as part of their 2023 Long Term Incentive Plan award. The RSUs will vest in three equal installments on March 3, 2024, March 3, 2025, and March 3, 2026."}],"balance_after":184919,"derivative":{"underlying":"Common Stock","underlying_shares":70398},"source":{"system":"sec-edgar","filing":"0000874501-23-000054","document":"wf-form4_167813726243919.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450123000054/wf-form4_167813726243919.xml","form_type":"4"}},{"id":1981611,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Deferred Share Units","published_at":"2023-03-02T21:29:36.000Z","date":"2023-02-28","kind":"exercise","acquired":true,"shares":24469,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F6","text":"Each Deferred Share Unit (\"DSU\") represents a contingent right to receive one share of the Company's common stock."},{"field":"shares","element":"transactionShares","label":"F4","text":"Represents the aggregate amount of RSUs that were converted into an equivalent number of Deferred Share Units (\"DSUs\") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and Performance Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Represents the aggregate amount of RSUs that were converted into DSUs of the Company upon settlement of a portion of the reporting person's 2022 Long Term Incentive Plan award."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"Represents the aggregate amount of RSUs that were converted into DSUs of the Company upon settlement of a portion of the reporting person's 2022 Long Term Incentive Plan award."}],"balance_after":24469,"derivative":{"underlying":"Common Stock","underlying_shares":24469},"source":{"system":"sec-edgar","filing":"0000874501-23-000048","document":"wf-form4_167779255656971.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450123000048/wf-form4_167779255656971.xml","form_type":"4"}},{"id":1981610,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2023-03-02T21:29:36.000Z","date":"2023-02-28","kind":"exercise","acquired":false,"shares":24469,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each RSU represents a contingent right to receive one share of the common stock the Company."},{"field":"shares","element":"transactionShares","label":"F4","text":"Represents the aggregate amount of RSUs that were converted into an equivalent number of Deferred Share Units (\"DSUs\") pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and Performance Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Represents the aggregate amount of RSUs that were converted into DSUs of the Company upon settlement of a portion of the reporting person's 2022 Long Term Incentive Plan award."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"Represents the aggregate amount of RSUs that were converted into DSUs of the Company upon settlement of a portion of the reporting person's 2022 Long Term Incentive Plan award."}],"balance_after":114521,"derivative":{"underlying":"Common Stock","underlying_shares":24469},"source":{"system":"sec-edgar","filing":"0000874501-23-000048","document":"wf-form4_167779255656971.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450123000048/wf-form4_167779255656971.xml","form_type":"4"}},{"id":1981609,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2023-03-02T21:29:36.000Z","date":"2023-02-28","kind":"exercise","acquired":false,"shares":1286,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each RSU represents a contingent right to receive one share of the common stock the Company."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Represents the aggregate number of restricted stock units (\"RSUs\") that were converted into shares of common stock of Ambac Financial Group, Inc. (the \"Company\") upon settlement of a portion of the reporting person's 2022 Long Term Incentive Plan award."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Represents the aggregate number of restricted stock units (\"RSUs\") that were converted into shares of common stock of Ambac Financial Group, Inc. (the \"Company\") upon settlement of a portion of the reporting person's 2022 Long Term Incentive Plan award."}],"balance_after":138990,"derivative":{"underlying":"Common Stock","underlying_shares":1286},"source":{"system":"sec-edgar","filing":"0000874501-23-000048","document":"wf-form4_167779255656971.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450123000048/wf-form4_167779255656971.xml","form_type":"4"}},{"id":1981608,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2023-03-02T21:29:36.000Z","date":"2023-02-28","kind":"tax_withholding","acquired":false,"shares":1286,"price":16.55,"value":21283.3,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents the aggregate number of RSUs that were converted into shares of common stock and withheld by the Company to satisfy certain tax withholding obligations."}],"balance_after":499916,"source":{"system":"sec-edgar","filing":"0000874501-23-000048","document":"wf-form4_167779255656971.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450123000048/wf-form4_167779255656971.xml","form_type":"4"}},{"id":1981607,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2023-03-02T21:29:36.000Z","date":"2023-02-28","kind":"exercise","acquired":true,"shares":1286,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the aggregate number of restricted stock units (\"RSUs\") that were converted into shares of common stock of Ambac Financial Group, Inc. (the \"Company\") upon settlement of a portion of the reporting person's 2022 Long Term Incentive Plan award."}],"balance_after":501202,"source":{"system":"sec-edgar","filing":"0000874501-23-000048","document":"wf-form4_167779255656971.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450123000048/wf-form4_167779255656971.xml","form_type":"4"}},{"id":1994396,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2023-02-24T21:48:39.000Z","date":"2023-02-22","kind":"tax_withholding","acquired":false,"shares":92709,"price":16.22,"value":1503739.98,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"As part of the vesting and settlement of the 2020 LTIP award, 92,709 shares of common stock were withheld by the Company to satisfy certain tax withholding obligations."}],"balance_after":499916,"source":{"system":"sec-edgar","filing":"0000874501-23-000030","document":"wf-form4_167727529655770.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450123000030/wf-form4_167727529655770.xml","form_type":"4"}},{"id":1994395,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2023-02-24T21:48:39.000Z","date":"2023-02-22","kind":"exercise","acquired":true,"shares":180352,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The reporting person acquired 180,352 shares of common stock of Ambac Financial Group, Inc. (the \"Company\") upon the simultaneous vesting and settlement of the reporting person's 2020 Long Term Incentive Plan (\"2020 LTIP\") award, which had a three year performance period and vested on February 22, 2023."}],"balance_after":592625,"source":{"system":"sec-edgar","filing":"0000874501-23-000030","document":"wf-form4_167727529655770.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450123000030/wf-form4_167727529655770.xml","form_type":"4"}},{"id":2070469,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2023-01-04T21:20:36.000Z","date":"2023-01-02","kind":"exercise","acquired":false,"shares":13784,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each RSU represents a contingent right to receive one share of the common stock the Company."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Represents the aggregate amount of restricted stock units (\"RSUs\") that were converted into shares of common stock of Ambac Financial Group, Inc. (the \"Company\") upon settlement of a portion of the reporting person's 2020 Long Term Incentive Plan award."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Represents the aggregate amount of restricted stock units (\"RSUs\") that were converted into shares of common stock of Ambac Financial Group, Inc. (the \"Company\") upon settlement of a portion of the reporting person's 2020 Long Term Incentive Plan award."}],"balance_after":140276,"derivative":{"underlying":"Common Stock","underlying_shares":13784},"source":{"system":"sec-edgar","filing":"0000874501-23-000009","document":"wf-form4_167286721399682.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450123000009/wf-form4_167286721399682.xml","form_type":"4"}},{"id":2070468,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2023-01-04T21:20:36.000Z","date":"2023-01-02","kind":"tax_withholding","acquired":false,"shares":8111,"price":17.44,"value":141455.84,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents the aggregate amount of RSUs that were converted into shares of common stock and withheld by the Company to satisfy certain tax withholding obligations."}],"balance_after":412273,"source":{"system":"sec-edgar","filing":"0000874501-23-000009","document":"wf-form4_167286721399682.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450123000009/wf-form4_167286721399682.xml","form_type":"4"}},{"id":2070467,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2023-01-04T21:20:36.000Z","date":"2023-01-02","kind":"exercise","acquired":true,"shares":13784,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the aggregate amount of restricted stock units (\"RSUs\") that were converted into shares of common stock of Ambac Financial Group, Inc. (the \"Company\") upon settlement of a portion of the reporting person's 2020 Long Term Incentive Plan award."}],"balance_after":420384,"source":{"system":"sec-edgar","filing":"0000874501-23-000009","document":"wf-form4_167286721399682.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450123000009/wf-form4_167286721399682.xml","form_type":"4"}},{"id":2271123,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2022-05-16T10:06:05.000Z","date":"2022-05-13","kind":"purchase","acquired":true,"shares":3000,"price":8.72,"value":26160.0,"ownership":{"direct":true},"balance_after":406600,"source":{"system":"sec-edgar","filing":"0000874501-22-000107","document":"wf-form4_165269555090301.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450122000107/wf-form4_165269555090301.xml","form_type":"4"}},{"id":2342975,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2022-03-09T21:19:03.000Z","date":"2022-03-08","kind":"exercise","acquired":false,"shares":31498,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each RSU represents a contingent right to receive one share of the common stock the Company."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Represents the aggregate amount of restricted stock units (\"RSUs\") that were converted into shares of common stock of Ambac Financial Group, Inc. (the \"Company\") upon the vesting and settlement of a portion of the reporting person's 2021 Long Term Incentive Plan award."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Represents the aggregate amount of restricted stock units (\"RSUs\") that were converted into shares of common stock of Ambac Financial Group, Inc. (the \"Company\") upon the vesting and settlement of a portion of the reporting person's 2021 Long Term Incentive Plan award."}],"balance_after":154060,"derivative":{"underlying":"Common Stock","underlying_shares":31498},"source":{"system":"sec-edgar","filing":"0000874501-22-000069","document":"wf-form4_164686071510995.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450122000069/wf-form4_164686071510995.xml","form_type":"4"}},{"id":2342974,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2022-03-09T21:19:03.000Z","date":"2022-03-08","kind":"tax_withholding","acquired":false,"shares":17418,"price":12.85,"value":223821.3,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents the aggregate amount of RSUs that were converted into shares of common stock and withheld by the Company to satisfy certain tax withholding obligations"}],"balance_after":403600,"source":{"system":"sec-edgar","filing":"0000874501-22-000069","document":"wf-form4_164686071510995.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450122000069/wf-form4_164686071510995.xml","form_type":"4"}},{"id":2342973,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2022-03-09T21:19:03.000Z","date":"2022-03-08","kind":"exercise","acquired":true,"shares":31498,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the aggregate amount of restricted stock units (\"RSUs\") that were converted into shares of common stock of Ambac Financial Group, Inc. (the \"Company\") upon the vesting and settlement of a portion of the reporting person's 2021 Long Term Incentive Plan award."}],"balance_after":421018,"source":{"system":"sec-edgar","filing":"0000874501-22-000069","document":"wf-form4_164686071510995.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450122000069/wf-form4_164686071510995.xml","form_type":"4"}},{"id":2362864,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2022-03-02T21:36:03.000Z","date":"2022-02-28","kind":"grant","acquired":true,"shares":77272,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit (\"RSU\") represents a contingent right to receive one share of common stock of Ambac Financial Group, Inc."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"On February 28, 2022 the reporting person received a grant of 77,272 RSUs as part of their 2022 Long Term Incentive Plan award. The RSUs will vest in three equal installments on February 28, 2023, February 28, 2024, and February 28, 2025."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"On February 28, 2022 the reporting person received a grant of 77,272 RSUs as part of their 2022 Long Term Incentive Plan award. The RSUs will vest in three equal installments on February 28, 2023, February 28, 2024, and February 28, 2025."}],"balance_after":185558,"derivative":{"underlying":"Common Stock","underlying_shares":77272},"source":{"system":"sec-edgar","filing":"0000874501-22-000049","document":"wf-form4_164625694330545.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450122000049/wf-form4_164625694330545.xml","form_type":"4"}},{"id":2370185,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2022-02-28T21:11:07.000Z","date":"2022-02-24","kind":"tax_withholding","acquired":false,"shares":65793,"price":14.35,"value":944129.55,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"As part of the vesting and settlement of the 2019 LTIP award, 65,793 shares of common stock were withheld by the Company to satisfy certain tax withholding obligations."}],"balance_after":389520,"source":{"system":"sec-edgar","filing":"0000874501-22-000025","document":"wf-form4_164608263130870.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450122000025/wf-form4_164608263130870.xml","form_type":"4"}},{"id":2370184,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2022-02-28T21:11:07.000Z","date":"2022-02-24","kind":"exercise","acquired":true,"shares":129085,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The reporting person acquired 129,085 shares of common stock of Ambac Financial Group, Inc. (the \"Company\") upon the simultaneous vesting and settlement of the reporting person's 2019 Long Term Incentive Plan (\"2019 LTIP\") award, which had a three year performance period and vested on February 24, 2022."}],"balance_after":455313,"source":{"system":"sec-edgar","filing":"0000874501-22-000025","document":"wf-form4_164608263130870.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450122000025/wf-form4_164608263130870.xml","form_type":"4"}},{"id":2452021,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2022-01-04T21:10:25.000Z","date":"2022-01-02","kind":"exercise","acquired":false,"shares":28552,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each RSU represents a contingent right to receive one share of the common stock the Company."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Represents the aggregate amount of restricted stock units (\"RSUs\") that were converted into shares of common stock of Ambac Financial Group, Inc. (the \"Company\") upon settlement of a portion of the reporting person's 2019 and 2020 Long Term Incentive Plan award."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Represents the aggregate amount of restricted stock units (\"RSUs\") that were converted into shares of common stock of Ambac Financial Group, Inc. (the \"Company\") upon settlement of a portion of the reporting person's 2019 and 2020 Long Term Incentive Plan award."}],"balance_after":108286,"derivative":{"underlying":"Common Stock","underlying_shares":28552},"source":{"system":"sec-edgar","filing":"0000874501-22-000010","document":"wf-form4_164133059952553.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450122000010/wf-form4_164133059952553.xml","form_type":"4"}},{"id":2452020,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2022-01-04T21:10:25.000Z","date":"2022-01-02","kind":"tax_withholding","acquired":false,"shares":16270,"price":16.05,"value":261133.5,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents the aggregate amount of RSUs that were converted into shares of common stock and withheld by the Company to satisfy certain tax withholding obligations."}],"balance_after":326228,"source":{"system":"sec-edgar","filing":"0000874501-22-000010","document":"wf-form4_164133059952553.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450122000010/wf-form4_164133059952553.xml","form_type":"4"}},{"id":2452019,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2022-01-04T21:10:25.000Z","date":"2022-01-02","kind":"exercise","acquired":true,"shares":28552,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the aggregate amount of restricted stock units (\"RSUs\") that were converted into shares of common stock of Ambac Financial Group, Inc. (the \"Company\") upon settlement of a portion of the reporting person's 2019 and 2020 Long Term Incentive Plan award."}],"balance_after":342498,"source":{"system":"sec-edgar","filing":"0000874501-22-000010","document":"wf-form4_164133059952553.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450122000010/wf-form4_164133059952553.xml","form_type":"4"}},{"id":2516430,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2021-11-12T13:38:25.000Z","date":"2021-11-10","kind":"purchase","acquired":true,"shares":124,"price":15.87,"value":1967.88,"ownership":{"direct":true},"balance_after":313946,"source":{"system":"sec-edgar","filing":"0000874501-21-000157","document":"wf-form4_163672428965510.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450121000157/wf-form4_163672428965510.xml","form_type":"4"}},{"id":2516429,"issuer":{"id":6308,"kind":"organization","name":"OCTAVE SPECIALTY GROUP INC","symbol":"OSG"},"owners":[{"id":30884,"kind":"person","name":"LeBlanc Claude","position":1,"cik":"0001380820","reported_name":"LeBlanc Claude","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2021-11-12T13:38:25.000Z","date":"2021-11-10","kind":"purchase","acquired":true,"shares":836,"price":15.88,"value":13275.68,"ownership":{"direct":true},"balance_after":313822,"source":{"system":"sec-edgar","filing":"0000874501-21-000157","document":"wf-form4_163672428965510.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/874501/000087450121000157/wf-form4_163672428965510.xml","form_type":"4"}}],"next_cursor":"2021-11-12T13:38:25.000000Z,2516429"}