{"transactions":[{"id":1079982,"issuer":{"id":4013,"kind":"organization","name":"Accelerant Holdings"},"owners":[{"id":77119,"kind":"person","name":"Schwartz Keoni Andrew","position":1,"cik":"0002009246","reported_name":"Schwartz Keoni Andrew","relationship":{"director":true,"ten_percent_owner":true}},{"id":77120,"kind":"organization","name":"ACP Accelerant Holdings, L.P.","position":2,"cik":"0002078270","reported_name":"ACP Accelerant Holdings, L.P.","relationship":{"ten_percent_owner":true}},{"id":77121,"kind":"organization","name":"ACP Insurance Management, LLC","position":3,"cik":"0002078277","reported_name":"ACP Insurance Management, LLC","relationship":{"ten_percent_owner":true}}],"security":"Redeemable Preference Shares","published_at":"2025-07-30T00:36:24.000Z","date":"2025-07-25","kind":"other","planned":false,"acquired":false,"shares":909791,"price":31.55,"value":28703906.05,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F9","text":"In connection with the Issuer's IPO, ACP Accelerant Co-Invest, LLC elected to have these Redeemable Preference Shares redeemed at a redemption price of $31.55 per share."},{"field":"kind","element":"transactionCoding","label":"F9","text":"In connection with the Issuer's IPO, ACP Accelerant Co-Invest, LLC elected to have these Redeemable Preference Shares redeemed at a redemption price of $31.55 per share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F9","text":"In connection with the Issuer's IPO, ACP Accelerant Co-Invest, LLC elected to have these Redeemable Preference Shares redeemed at a redemption price of $31.55 per share."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F9","text":"In connection with the Issuer's IPO, ACP Accelerant Co-Invest, LLC elected to have these Redeemable Preference Shares redeemed at a redemption price of $31.55 per share."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"These securities are held directly by ACP Accelerant Co-Invest, LLC. Each of (i) ACP Insurance Management, LLC, as the managing member of ACP Accelerant Co-Invest, LLC, and (ii) Mr. Schwartz, as the sole owner and managing member of ACP Insurance Management, LLC, may be deemed to have voting and dispositive power over these securities, but disclaim beneficial ownership over these securities except to the extent of their respective pecuniary interest therein, if any."}],"balance_after":0,"derivative":{"underlying":"Common Shares","underlying_shares":909791},"source":{"system":"sec-edgar","filing":"0000905148-25-002639","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":21,"url":"https://www.sec.gov/Archives/edgar/data/1997350/000090514825002639/form4.xml","form_type":"4"}},{"id":1079981,"issuer":{"id":4013,"kind":"organization","name":"Accelerant Holdings"},"owners":[{"id":77119,"kind":"person","name":"Schwartz Keoni Andrew","position":1,"cik":"0002009246","reported_name":"Schwartz Keoni Andrew","relationship":{"director":true,"ten_percent_owner":true}},{"id":77120,"kind":"organization","name":"ACP Accelerant Holdings, L.P.","position":2,"cik":"0002078270","reported_name":"ACP Accelerant Holdings, L.P.","relationship":{"ten_percent_owner":true}},{"id":77121,"kind":"organization","name":"ACP Insurance Management, LLC","position":3,"cik":"0002078277","reported_name":"ACP Insurance Management, LLC","relationship":{"ten_percent_owner":true}}],"security":"Class B Common Shares","published_at":"2025-07-30T00:36:24.000Z","date":"2025-07-25","kind":"exercise","planned":false,"acquired":false,"shares":326312,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each holder of Class B Common Shares has the right to convert their Class B Common Shares into Class A Common Shares on a 1-for-1 basis at any time and at their option. Additionally, Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, immediately following a transfer to any non-permitted holder of Class B Common Shares, and all outstanding Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, on the earlier of: (i) if at any time following the consummation of the IPO, the holders of the Class B Common Shares immediately prior to the consummation of the IPO hold less than 50% of the total Class B Common Shares then in issue, and (ii) the third anniversary of the consummation of the Issuer's IPO."},{"field":"kind","element":"transactionCoding","label":"F4","text":"These Class B Common Shares converted into Class A Common Shares on a 1-for-1 basis and then were sold pursuant to an underwriting agreement dated as of July 23, 2025, by and among the Issuer, the selling stockholders, and the underwriters named therein in connection with the Issuer's IPO."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"These Class B Common Shares converted into Class A Common Shares on a 1-for-1 basis and then were sold pursuant to an underwriting agreement dated as of July 23, 2025, by and among the Issuer, the selling stockholders, and the underwriters named therein in connection with the Issuer's IPO."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Each holder of Class B Common Shares has the right to convert their Class B Common Shares into Class A Common Shares on a 1-for-1 basis at any time and at their option. Additionally, Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, immediately following a transfer to any non-permitted holder of Class B Common Shares, and all outstanding Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, on the earlier of: (i) if at any time following the consummation of the IPO, the holders of the Class B Common Shares immediately prior to the consummation of the IPO hold less than 50% of the total Class B Common Shares then in issue, and (ii) the third anniversary of the consummation of the Issuer's IPO."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Each holder of Class B Common Shares has the right to convert their Class B Common Shares into Class A Common Shares on a 1-for-1 basis at any time and at their option. Additionally, Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, immediately following a transfer to any non-permitted holder of Class B Common Shares, and all outstanding Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, on the earlier of: (i) if at any time following the consummation of the IPO, the holders of the Class B Common Shares immediately prior to the consummation of the IPO hold less than 50% of the total Class B Common Shares then in issue, and (ii) the third anniversary of the consummation of the Issuer's IPO."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F8","text":"These securities are held directly by ACP Accelerant Investment Holding Company II, Ltd. ACP Accelerant Holdings, L.P. is the sole owner of ACP Accelerant Investment Holding Company II, Ltd. Each of (i) ACP Insurance Management, LLC, as the general partner of ACP Accelerant Holdings, L.P., and (ii) Mr. Schwartz, as the sole owner and managing member of ACP Insurance Management, LLC, may be deemed to have voting and dispositive power over these securities, but disclaim beneficial ownership over these securities except to the extent of their respective pecuniary interest therein, if any."}],"balance_after":3302263,"derivative":{"underlying":"Class A Common Shares","underlying_shares":326312},"source":{"system":"sec-edgar","filing":"0000905148-25-002639","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":20,"url":"https://www.sec.gov/Archives/edgar/data/1997350/000090514825002639/form4.xml","form_type":"4"}},{"id":1079980,"issuer":{"id":4013,"kind":"organization","name":"Accelerant Holdings"},"owners":[{"id":77119,"kind":"person","name":"Schwartz Keoni Andrew","position":1,"cik":"0002009246","reported_name":"Schwartz Keoni Andrew","relationship":{"director":true,"ten_percent_owner":true}},{"id":77120,"kind":"organization","name":"ACP Accelerant Holdings, L.P.","position":2,"cik":"0002078270","reported_name":"ACP Accelerant Holdings, L.P.","relationship":{"ten_percent_owner":true}},{"id":77121,"kind":"organization","name":"ACP Insurance Management, LLC","position":3,"cik":"0002078277","reported_name":"ACP Insurance Management, LLC","relationship":{"ten_percent_owner":true}}],"security":"Class B Common Shares","published_at":"2025-07-30T00:36:24.000Z","date":"2025-07-25","kind":"exercise","planned":false,"acquired":true,"shares":3628575,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each holder of Class B Common Shares has the right to convert their Class B Common Shares into Class A Common Shares on a 1-for-1 basis at any time and at their option. Additionally, Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, immediately following a transfer to any non-permitted holder of Class B Common Shares, and all outstanding Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, on the earlier of: (i) if at any time following the consummation of the IPO, the holders of the Class B Common Shares immediately prior to the consummation of the IPO hold less than 50% of the total Class B Common Shares then in issue, and (ii) the third anniversary of the consummation of the Issuer's IPO."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"In connection with the Issuer's initial public offering (\"IPO\"), these limited partnership interests of Accelerant Holdings LP were exchanged for Class B Common Shares of the Issuer in proportion to the economic interests represented by the limited partnership interests."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Each holder of Class B Common Shares has the right to convert their Class B Common Shares into Class A Common Shares on a 1-for-1 basis at any time and at their option. Additionally, Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, immediately following a transfer to any non-permitted holder of Class B Common Shares, and all outstanding Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, on the earlier of: (i) if at any time following the consummation of the IPO, the holders of the Class B Common Shares immediately prior to the consummation of the IPO hold less than 50% of the total Class B Common Shares then in issue, and (ii) the third anniversary of the consummation of the Issuer's IPO."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Each holder of Class B Common Shares has the right to convert their Class B Common Shares into Class A Common Shares on a 1-for-1 basis at any time and at their option. Additionally, Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, immediately following a transfer to any non-permitted holder of Class B Common Shares, and all outstanding Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, on the earlier of: (i) if at any time following the consummation of the IPO, the holders of the Class B Common Shares immediately prior to the consummation of the IPO hold less than 50% of the total Class B Common Shares then in issue, and (ii) the third anniversary of the consummation of the Issuer's IPO."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F8","text":"These securities are held directly by ACP Accelerant Investment Holding Company II, Ltd. ACP Accelerant Holdings, L.P. is the sole owner of ACP Accelerant Investment Holding Company II, Ltd. Each of (i) ACP Insurance Management, LLC, as the general partner of ACP Accelerant Holdings, L.P., and (ii) Mr. Schwartz, as the sole owner and managing member of ACP Insurance Management, LLC, may be deemed to have voting and dispositive power over these securities, but disclaim beneficial ownership over these securities except to the extent of their respective pecuniary interest therein, if any."}],"balance_after":3628575,"derivative":{"underlying":"Class A Common Shares","underlying_shares":3628575},"source":{"system":"sec-edgar","filing":"0000905148-25-002639","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":19,"url":"https://www.sec.gov/Archives/edgar/data/1997350/000090514825002639/form4.xml","form_type":"4"}},{"id":1079979,"issuer":{"id":4013,"kind":"organization","name":"Accelerant Holdings"},"owners":[{"id":77119,"kind":"person","name":"Schwartz Keoni Andrew","position":1,"cik":"0002009246","reported_name":"Schwartz Keoni Andrew","relationship":{"director":true,"ten_percent_owner":true}},{"id":77120,"kind":"organization","name":"ACP Accelerant Holdings, L.P.","position":2,"cik":"0002078270","reported_name":"ACP Accelerant Holdings, L.P.","relationship":{"ten_percent_owner":true}},{"id":77121,"kind":"organization","name":"ACP Insurance Management, LLC","position":3,"cik":"0002078277","reported_name":"ACP Insurance Management, LLC","relationship":{"ten_percent_owner":true}}],"security":"Convertible Preference Shares","published_at":"2025-07-30T00:36:24.000Z","date":"2025-07-25","kind":"exercise","planned":false,"acquired":false,"shares":3628575,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F6","text":"In connection with the Issuer's IPO, these shares of the Issuer's Preference Shares automatically converted into Class B Common Shares of the Issuer at a 1-for-1 conversion rate."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"In connection with the Issuer's IPO, these shares of the Issuer's Preference Shares automatically converted into Class B Common Shares of the Issuer at a 1-for-1 conversion rate."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"In connection with the Issuer's IPO, these shares of the Issuer's Preference Shares automatically converted into Class B Common Shares of the Issuer at a 1-for-1 conversion rate."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F8","text":"These securities are held directly by ACP Accelerant Investment Holding Company II, Ltd. ACP Accelerant Holdings, L.P. is the sole owner of ACP Accelerant Investment Holding Company II, Ltd. Each of (i) ACP Insurance Management, LLC, as the general partner of ACP Accelerant Holdings, L.P., and (ii) Mr. Schwartz, as the sole owner and managing member of ACP Insurance Management, LLC, may be deemed to have voting and dispositive power over these securities, but disclaim beneficial ownership over these securities except to the extent of their respective pecuniary interest therein, if any."}],"balance_after":0,"derivative":{"underlying":"Class B Common Shares","underlying_shares":3628575},"source":{"system":"sec-edgar","filing":"0000905148-25-002639","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":18,"url":"https://www.sec.gov/Archives/edgar/data/1997350/000090514825002639/form4.xml","form_type":"4"}},{"id":1079978,"issuer":{"id":4013,"kind":"organization","name":"Accelerant Holdings"},"owners":[{"id":77119,"kind":"person","name":"Schwartz Keoni Andrew","position":1,"cik":"0002009246","reported_name":"Schwartz Keoni Andrew","relationship":{"director":true,"ten_percent_owner":true}},{"id":77120,"kind":"organization","name":"ACP Accelerant Holdings, L.P.","position":2,"cik":"0002078270","reported_name":"ACP Accelerant Holdings, L.P.","relationship":{"ten_percent_owner":true}},{"id":77121,"kind":"organization","name":"ACP Insurance Management, LLC","position":3,"cik":"0002078277","reported_name":"ACP Insurance Management, LLC","relationship":{"ten_percent_owner":true}}],"security":"Class B Common Shares","published_at":"2025-07-30T00:36:24.000Z","date":"2025-07-25","kind":"exercise","planned":false,"acquired":false,"shares":488131,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each holder of Class B Common Shares has the right to convert their Class B Common Shares into Class A Common Shares on a 1-for-1 basis at any time and at their option. Additionally, Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, immediately following a transfer to any non-permitted holder of Class B Common Shares, and all outstanding Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, on the earlier of: (i) if at any time following the consummation of the IPO, the holders of the Class B Common Shares immediately prior to the consummation of the IPO hold less than 50% of the total Class B Common Shares then in issue, and (ii) the third anniversary of the consummation of the Issuer's IPO."},{"field":"kind","element":"transactionCoding","label":"F4","text":"These Class B Common Shares converted into Class A Common Shares on a 1-for-1 basis and then were sold pursuant to an underwriting agreement dated as of July 23, 2025, by and among the Issuer, the selling stockholders, and the underwriters named therein in connection with the Issuer's IPO."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"These Class B Common Shares converted into Class A Common Shares on a 1-for-1 basis and then were sold pursuant to an underwriting agreement dated as of July 23, 2025, by and among the Issuer, the selling stockholders, and the underwriters named therein in connection with the Issuer's IPO."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Each holder of Class B Common Shares has the right to convert their Class B Common Shares into Class A Common Shares on a 1-for-1 basis at any time and at their option. Additionally, Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, immediately following a transfer to any non-permitted holder of Class B Common Shares, and all outstanding Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, on the earlier of: (i) if at any time following the consummation of the IPO, the holders of the Class B Common Shares immediately prior to the consummation of the IPO hold less than 50% of the total Class B Common Shares then in issue, and (ii) the third anniversary of the consummation of the Issuer's IPO."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Each holder of Class B Common Shares has the right to convert their Class B Common Shares into Class A Common Shares on a 1-for-1 basis at any time and at their option. Additionally, Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, immediately following a transfer to any non-permitted holder of Class B Common Shares, and all outstanding Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, on the earlier of: (i) if at any time following the consummation of the IPO, the holders of the Class B Common Shares immediately prior to the consummation of the IPO hold less than 50% of the total Class B Common Shares then in issue, and (ii) the third anniversary of the consummation of the Issuer's IPO."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"These securities are held directly by ACP Accelerant Co-Invest, LLC. Each of (i) ACP Insurance Management, LLC, as the managing member of ACP Accelerant Co-Invest, LLC, and (ii) Mr. Schwartz, as the sole owner and managing member of ACP Insurance Management, LLC, may be deemed to have voting and dispositive power over these securities, but disclaim beneficial ownership over these securities except to the extent of their respective pecuniary interest therein, if any."}],"balance_after":4939839,"derivative":{"underlying":"Class A Common Shares","underlying_shares":488131},"source":{"system":"sec-edgar","filing":"0000905148-25-002639","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":17,"url":"https://www.sec.gov/Archives/edgar/data/1997350/000090514825002639/form4.xml","form_type":"4"}},{"id":1079977,"issuer":{"id":4013,"kind":"organization","name":"Accelerant Holdings"},"owners":[{"id":77119,"kind":"person","name":"Schwartz Keoni Andrew","position":1,"cik":"0002009246","reported_name":"Schwartz Keoni Andrew","relationship":{"director":true,"ten_percent_owner":true}},{"id":77120,"kind":"organization","name":"ACP Accelerant Holdings, L.P.","position":2,"cik":"0002078270","reported_name":"ACP Accelerant Holdings, L.P.","relationship":{"ten_percent_owner":true}},{"id":77121,"kind":"organization","name":"ACP Insurance Management, LLC","position":3,"cik":"0002078277","reported_name":"ACP Insurance Management, LLC","relationship":{"ten_percent_owner":true}}],"security":"Class B Common Shares","published_at":"2025-07-30T00:36:24.000Z","date":"2025-07-25","kind":"exercise","planned":false,"acquired":true,"shares":5427970,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each holder of Class B Common Shares has the right to convert their Class B Common Shares into Class A Common Shares on a 1-for-1 basis at any time and at their option. Additionally, Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, immediately following a transfer to any non-permitted holder of Class B Common Shares, and all outstanding Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, on the earlier of: (i) if at any time following the consummation of the IPO, the holders of the Class B Common Shares immediately prior to the consummation of the IPO hold less than 50% of the total Class B Common Shares then in issue, and (ii) the third anniversary of the consummation of the Issuer's IPO."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"In connection with the Issuer's initial public offering (\"IPO\"), these limited partnership interests of Accelerant Holdings LP were exchanged for Class B Common Shares of the Issuer in proportion to the economic interests represented by the limited partnership interests."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Each holder of Class B Common Shares has the right to convert their Class B Common Shares into Class A Common Shares on a 1-for-1 basis at any time and at their option. Additionally, Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, immediately following a transfer to any non-permitted holder of Class B Common Shares, and all outstanding Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, on the earlier of: (i) if at any time following the consummation of the IPO, the holders of the Class B Common Shares immediately prior to the consummation of the IPO hold less than 50% of the total Class B Common Shares then in issue, and (ii) the third anniversary of the consummation of the Issuer's IPO."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Each holder of Class B Common Shares has the right to convert their Class B Common Shares into Class A Common Shares on a 1-for-1 basis at any time and at their option. Additionally, Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, immediately following a transfer to any non-permitted holder of Class B Common Shares, and all outstanding Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, on the earlier of: (i) if at any time following the consummation of the IPO, the holders of the Class B Common Shares immediately prior to the consummation of the IPO hold less than 50% of the total Class B Common Shares then in issue, and (ii) the third anniversary of the consummation of the Issuer's IPO."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"These securities are held directly by ACP Accelerant Co-Invest, LLC. Each of (i) ACP Insurance Management, LLC, as the managing member of ACP Accelerant Co-Invest, LLC, and (ii) Mr. Schwartz, as the sole owner and managing member of ACP Insurance Management, LLC, may be deemed to have voting and dispositive power over these securities, but disclaim beneficial ownership over these securities except to the extent of their respective pecuniary interest therein, if any."}],"balance_after":5427970,"derivative":{"underlying":"Class A Common Shares","underlying_shares":5427970},"source":{"system":"sec-edgar","filing":"0000905148-25-002639","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":16,"url":"https://www.sec.gov/Archives/edgar/data/1997350/000090514825002639/form4.xml","form_type":"4"}},{"id":1079976,"issuer":{"id":4013,"kind":"organization","name":"Accelerant Holdings"},"owners":[{"id":77119,"kind":"person","name":"Schwartz Keoni Andrew","position":1,"cik":"0002009246","reported_name":"Schwartz Keoni Andrew","relationship":{"director":true,"ten_percent_owner":true}},{"id":77120,"kind":"organization","name":"ACP Accelerant Holdings, L.P.","position":2,"cik":"0002078270","reported_name":"ACP Accelerant Holdings, L.P.","relationship":{"ten_percent_owner":true}},{"id":77121,"kind":"organization","name":"ACP Insurance Management, LLC","position":3,"cik":"0002078277","reported_name":"ACP Insurance Management, LLC","relationship":{"ten_percent_owner":true}}],"security":"Convertible Preference Shares","published_at":"2025-07-30T00:36:24.000Z","date":"2025-07-25","kind":"exercise","planned":false,"acquired":false,"shares":5427970,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F6","text":"In connection with the Issuer's IPO, these shares of the Issuer's Preference Shares automatically converted into Class B Common Shares of the Issuer at a 1-for-1 conversion rate."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"In connection with the Issuer's IPO, these shares of the Issuer's Preference Shares automatically converted into Class B Common Shares of the Issuer at a 1-for-1 conversion rate."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"In connection with the Issuer's IPO, these shares of the Issuer's Preference Shares automatically converted into Class B Common Shares of the Issuer at a 1-for-1 conversion rate."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"These securities are held directly by ACP Accelerant Co-Invest, LLC. Each of (i) ACP Insurance Management, LLC, as the managing member of ACP Accelerant Co-Invest, LLC, and (ii) Mr. Schwartz, as the sole owner and managing member of ACP Insurance Management, LLC, may be deemed to have voting and dispositive power over these securities, but disclaim beneficial ownership over these securities except to the extent of their respective pecuniary interest therein, if any."}],"balance_after":0,"derivative":{"underlying":"Class B Common Shares","underlying_shares":5427970},"source":{"system":"sec-edgar","filing":"0000905148-25-002639","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":15,"url":"https://www.sec.gov/Archives/edgar/data/1997350/000090514825002639/form4.xml","form_type":"4"}},{"id":1079975,"issuer":{"id":4013,"kind":"organization","name":"Accelerant Holdings"},"owners":[{"id":77119,"kind":"person","name":"Schwartz Keoni Andrew","position":1,"cik":"0002009246","reported_name":"Schwartz Keoni Andrew","relationship":{"director":true,"ten_percent_owner":true}},{"id":77120,"kind":"organization","name":"ACP Accelerant Holdings, L.P.","position":2,"cik":"0002078270","reported_name":"ACP Accelerant Holdings, L.P.","relationship":{"ten_percent_owner":true}},{"id":77121,"kind":"organization","name":"ACP Insurance Management, LLC","position":3,"cik":"0002078277","reported_name":"ACP Insurance Management, LLC","relationship":{"ten_percent_owner":true}}],"security":"Class B Common Shares","published_at":"2025-07-30T00:36:24.000Z","date":"2025-07-25","kind":"exercise","planned":false,"acquired":false,"shares":2670456,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each holder of Class B Common Shares has the right to convert their Class B Common Shares into Class A Common Shares on a 1-for-1 basis at any time and at their option. Additionally, Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, immediately following a transfer to any non-permitted holder of Class B Common Shares, and all outstanding Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, on the earlier of: (i) if at any time following the consummation of the IPO, the holders of the Class B Common Shares immediately prior to the consummation of the IPO hold less than 50% of the total Class B Common Shares then in issue, and (ii) the third anniversary of the consummation of the Issuer's IPO."},{"field":"kind","element":"transactionCoding","label":"F4","text":"These Class B Common Shares converted into Class A Common Shares on a 1-for-1 basis and then were sold pursuant to an underwriting agreement dated as of July 23, 2025, by and among the Issuer, the selling stockholders, and the underwriters named therein in connection with the Issuer's IPO."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"These Class B Common Shares converted into Class A Common Shares on a 1-for-1 basis and then were sold pursuant to an underwriting agreement dated as of July 23, 2025, by and among the Issuer, the selling stockholders, and the underwriters named therein in connection with the Issuer's IPO."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Each holder of Class B Common Shares has the right to convert their Class B Common Shares into Class A Common Shares on a 1-for-1 basis at any time and at their option. Additionally, Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, immediately following a transfer to any non-permitted holder of Class B Common Shares, and all outstanding Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, on the earlier of: (i) if at any time following the consummation of the IPO, the holders of the Class B Common Shares immediately prior to the consummation of the IPO hold less than 50% of the total Class B Common Shares then in issue, and (ii) the third anniversary of the consummation of the Issuer's IPO."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Each holder of Class B Common Shares has the right to convert their Class B Common Shares into Class A Common Shares on a 1-for-1 basis at any time and at their option. Additionally, Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, immediately following a transfer to any non-permitted holder of Class B Common Shares, and all outstanding Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, on the earlier of: (i) if at any time following the consummation of the IPO, the holders of the Class B Common Shares immediately prior to the consummation of the IPO hold less than 50% of the total Class B Common Shares then in issue, and (ii) the third anniversary of the consummation of the Issuer's IPO."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"These securities are held directly by ACP Accelerant Investment Holding Company, Ltd. ACP Accelerant Holdings, L.P. is the sole owner of ACP Accelerant Investment Holding Company, Ltd. Each of (i) ACP Insurance Management, LLC, as the general partner of ACP Accelerant Holdings, L.P., and (ii) Mr. Schwartz, as the sole owner and managing member of ACP Insurance Management, LLC, may be deemed to have voting and dispositive power over these securities, but disclaim beneficial ownership over these securities except to the extent of their respective pecuniary interest therein, if any."}],"balance_after":0,"derivative":{"underlying":"Class A Common Shares","underlying_shares":2670456},"source":{"system":"sec-edgar","filing":"0000905148-25-002639","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":14,"url":"https://www.sec.gov/Archives/edgar/data/1997350/000090514825002639/form4.xml","form_type":"4"}},{"id":1079974,"issuer":{"id":4013,"kind":"organization","name":"Accelerant Holdings"},"owners":[{"id":77119,"kind":"person","name":"Schwartz Keoni Andrew","position":1,"cik":"0002009246","reported_name":"Schwartz Keoni Andrew","relationship":{"director":true,"ten_percent_owner":true}},{"id":77120,"kind":"organization","name":"ACP Accelerant Holdings, L.P.","position":2,"cik":"0002078270","reported_name":"ACP Accelerant Holdings, L.P.","relationship":{"ten_percent_owner":true}},{"id":77121,"kind":"organization","name":"ACP Insurance Management, LLC","position":3,"cik":"0002078277","reported_name":"ACP Insurance Management, LLC","relationship":{"ten_percent_owner":true}}],"security":"Class B Common Shares","published_at":"2025-07-30T00:36:24.000Z","date":"2025-07-25","kind":"exercise","planned":false,"acquired":true,"shares":2670456,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each holder of Class B Common Shares has the right to convert their Class B Common Shares into Class A Common Shares on a 1-for-1 basis at any time and at their option. Additionally, Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, immediately following a transfer to any non-permitted holder of Class B Common Shares, and all outstanding Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, on the earlier of: (i) if at any time following the consummation of the IPO, the holders of the Class B Common Shares immediately prior to the consummation of the IPO hold less than 50% of the total Class B Common Shares then in issue, and (ii) the third anniversary of the consummation of the Issuer's IPO."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"In connection with the Issuer's initial public offering (\"IPO\"), these limited partnership interests of Accelerant Holdings LP were exchanged for Class B Common Shares of the Issuer in proportion to the economic interests represented by the limited partnership interests."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Each holder of Class B Common Shares has the right to convert their Class B Common Shares into Class A Common Shares on a 1-for-1 basis at any time and at their option. Additionally, Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, immediately following a transfer to any non-permitted holder of Class B Common Shares, and all outstanding Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, on the earlier of: (i) if at any time following the consummation of the IPO, the holders of the Class B Common Shares immediately prior to the consummation of the IPO hold less than 50% of the total Class B Common Shares then in issue, and (ii) the third anniversary of the consummation of the Issuer's IPO."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Each holder of Class B Common Shares has the right to convert their Class B Common Shares into Class A Common Shares on a 1-for-1 basis at any time and at their option. Additionally, Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, immediately following a transfer to any non-permitted holder of Class B Common Shares, and all outstanding Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, on the earlier of: (i) if at any time following the consummation of the IPO, the holders of the Class B Common Shares immediately prior to the consummation of the IPO hold less than 50% of the total Class B Common Shares then in issue, and (ii) the third anniversary of the consummation of the Issuer's IPO."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"These securities are held directly by ACP Accelerant Investment Holding Company, Ltd. ACP Accelerant Holdings, L.P. is the sole owner of ACP Accelerant Investment Holding Company, Ltd. Each of (i) ACP Insurance Management, LLC, as the general partner of ACP Accelerant Holdings, L.P., and (ii) Mr. Schwartz, as the sole owner and managing member of ACP Insurance Management, LLC, may be deemed to have voting and dispositive power over these securities, but disclaim beneficial ownership over these securities except to the extent of their respective pecuniary interest therein, if any."}],"balance_after":2670456,"derivative":{"underlying":"Class A Common Shares","underlying_shares":2670456},"source":{"system":"sec-edgar","filing":"0000905148-25-002639","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/1997350/000090514825002639/form4.xml","form_type":"4"}},{"id":1079973,"issuer":{"id":4013,"kind":"organization","name":"Accelerant Holdings"},"owners":[{"id":77119,"kind":"person","name":"Schwartz Keoni Andrew","position":1,"cik":"0002009246","reported_name":"Schwartz Keoni Andrew","relationship":{"director":true,"ten_percent_owner":true}},{"id":77120,"kind":"organization","name":"ACP Accelerant Holdings, L.P.","position":2,"cik":"0002078270","reported_name":"ACP Accelerant Holdings, L.P.","relationship":{"ten_percent_owner":true}},{"id":77121,"kind":"organization","name":"ACP Insurance Management, LLC","position":3,"cik":"0002078277","reported_name":"ACP Insurance Management, LLC","relationship":{"ten_percent_owner":true}}],"security":"LP Interests of Accelerant Holdings LP","published_at":"2025-07-30T00:36:24.000Z","date":"2025-07-25","kind":"exercise","planned":false,"acquired":false,"shares":100,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"In connection with the Issuer's initial public offering (\"IPO\"), these limited partnership interests of Accelerant Holdings LP were exchanged for Class B Common Shares of the Issuer in proportion to the economic interests represented by the limited partnership interests."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"In connection with the Issuer's initial public offering (\"IPO\"), these limited partnership interests of Accelerant Holdings LP were exchanged for Class B Common Shares of the Issuer in proportion to the economic interests represented by the limited partnership interests."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"In connection with the Issuer's initial public offering (\"IPO\"), these limited partnership interests of Accelerant Holdings LP were exchanged for Class B Common Shares of the Issuer in proportion to the economic interests represented by the limited partnership interests."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"These securities are held directly by ACP Accelerant Investment Holding Company, Ltd. ACP Accelerant Holdings, L.P. is the sole owner of ACP Accelerant Investment Holding Company, Ltd. Each of (i) ACP Insurance Management, LLC, as the general partner of ACP Accelerant Holdings, L.P., and (ii) Mr. Schwartz, as the sole owner and managing member of ACP Insurance Management, LLC, may be deemed to have voting and dispositive power over these securities, but disclaim beneficial ownership over these securities except to the extent of their respective pecuniary interest therein, if any."}],"balance_after":0,"derivative":{"underlying":"Class B Common Shares","underlying_shares":2670456},"source":{"system":"sec-edgar","filing":"0000905148-25-002639","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/1997350/000090514825002639/form4.xml","form_type":"4"}},{"id":1079972,"issuer":{"id":4013,"kind":"organization","name":"Accelerant Holdings"},"owners":[{"id":77119,"kind":"person","name":"Schwartz Keoni Andrew","position":1,"cik":"0002009246","reported_name":"Schwartz Keoni Andrew","relationship":{"director":true,"ten_percent_owner":true}},{"id":77120,"kind":"organization","name":"ACP Accelerant Holdings, L.P.","position":2,"cik":"0002078270","reported_name":"ACP Accelerant Holdings, L.P.","relationship":{"ten_percent_owner":true}},{"id":77121,"kind":"organization","name":"ACP Insurance Management, LLC","position":3,"cik":"0002078277","reported_name":"ACP Insurance Management, LLC","relationship":{"ten_percent_owner":true}}],"security":"Class B Common Shares","published_at":"2025-07-30T00:36:24.000Z","date":"2025-07-25","kind":"exercise","planned":false,"acquired":false,"shares":8111253,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each holder of Class B Common Shares has the right to convert their Class B Common Shares into Class A Common Shares on a 1-for-1 basis at any time and at their option. Additionally, Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, immediately following a transfer to any non-permitted holder of Class B Common Shares, and all outstanding Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, on the earlier of: (i) if at any time following the consummation of the IPO, the holders of the Class B Common Shares immediately prior to the consummation of the IPO hold less than 50% of the total Class B Common Shares then in issue, and (ii) the third anniversary of the consummation of the Issuer's IPO."},{"field":"kind","element":"transactionCoding","label":"F4","text":"These Class B Common Shares converted into Class A Common Shares on a 1-for-1 basis and then were sold pursuant to an underwriting agreement dated as of July 23, 2025, by and among the Issuer, the selling stockholders, and the underwriters named therein in connection with the Issuer's IPO."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"These Class B Common Shares converted into Class A Common Shares on a 1-for-1 basis and then were sold pursuant to an underwriting agreement dated as of July 23, 2025, by and among the Issuer, the selling stockholders, and the underwriters named therein in connection with the Issuer's IPO."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Each holder of Class B Common Shares has the right to convert their Class B Common Shares into Class A Common Shares on a 1-for-1 basis at any time and at their option. Additionally, Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, immediately following a transfer to any non-permitted holder of Class B Common Shares, and all outstanding Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, on the earlier of: (i) if at any time following the consummation of the IPO, the holders of the Class B Common Shares immediately prior to the consummation of the IPO hold less than 50% of the total Class B Common Shares then in issue, and (ii) the third anniversary of the consummation of the Issuer's IPO."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Each holder of Class B Common Shares has the right to convert their Class B Common Shares into Class A Common Shares on a 1-for-1 basis at any time and at their option. Additionally, Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, immediately following a transfer to any non-permitted holder of Class B Common Shares, and all outstanding Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, on the earlier of: (i) if at any time following the consummation of the IPO, the holders of the Class B Common Shares immediately prior to the consummation of the IPO hold less than 50% of the total Class B Common Shares then in issue, and (ii) the third anniversary of the consummation of the Issuer's IPO."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"These securities are held directly by ACP Accelerant Holdings, L.P. Each of (i) ACP Insurance Management, LLC, as the general partner of ACP Accelerant Holdings, L.P., and (ii) Keoni Schwartz (\"Mr. Schwartz\"), as the sole owner and managing member of ACP Insurance Management, LLC, may be deemed to have voting and dispositive power over these securities, but disclaim beneficial ownership over these securities except to the extent of their respective pecuniary interest therein, if any."}],"balance_after":82085342,"derivative":{"underlying":"Class A Common Shares","underlying_shares":8111253},"source":{"system":"sec-edgar","filing":"0000905148-25-002639","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1997350/000090514825002639/form4.xml","form_type":"4"}},{"id":1079971,"issuer":{"id":4013,"kind":"organization","name":"Accelerant Holdings"},"owners":[{"id":77119,"kind":"person","name":"Schwartz Keoni Andrew","position":1,"cik":"0002009246","reported_name":"Schwartz Keoni Andrew","relationship":{"director":true,"ten_percent_owner":true}},{"id":77120,"kind":"organization","name":"ACP Accelerant Holdings, L.P.","position":2,"cik":"0002078270","reported_name":"ACP Accelerant Holdings, L.P.","relationship":{"ten_percent_owner":true}},{"id":77121,"kind":"organization","name":"ACP Insurance Management, LLC","position":3,"cik":"0002078277","reported_name":"ACP Insurance Management, LLC","relationship":{"ten_percent_owner":true}}],"security":"Class B Common Shares","published_at":"2025-07-30T00:36:24.000Z","date":"2025-07-25","kind":"exercise","planned":false,"acquired":true,"shares":90196595,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each holder of Class B Common Shares has the right to convert their Class B Common Shares into Class A Common Shares on a 1-for-1 basis at any time and at their option. Additionally, Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, immediately following a transfer to any non-permitted holder of Class B Common Shares, and all outstanding Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, on the earlier of: (i) if at any time following the consummation of the IPO, the holders of the Class B Common Shares immediately prior to the consummation of the IPO hold less than 50% of the total Class B Common Shares then in issue, and (ii) the third anniversary of the consummation of the Issuer's IPO."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"In connection with the Issuer's initial public offering (\"IPO\"), these limited partnership interests of Accelerant Holdings LP were exchanged for Class B Common Shares of the Issuer in proportion to the economic interests represented by the limited partnership interests."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Each holder of Class B Common Shares has the right to convert their Class B Common Shares into Class A Common Shares on a 1-for-1 basis at any time and at their option. Additionally, Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, immediately following a transfer to any non-permitted holder of Class B Common Shares, and all outstanding Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, on the earlier of: (i) if at any time following the consummation of the IPO, the holders of the Class B Common Shares immediately prior to the consummation of the IPO hold less than 50% of the total Class B Common Shares then in issue, and (ii) the third anniversary of the consummation of the Issuer's IPO."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Each holder of Class B Common Shares has the right to convert their Class B Common Shares into Class A Common Shares on a 1-for-1 basis at any time and at their option. Additionally, Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, immediately following a transfer to any non-permitted holder of Class B Common Shares, and all outstanding Class B Common Shares will automatically convert into Class A Common Shares, on a 1-for-1 basis, on the earlier of: (i) if at any time following the consummation of the IPO, the holders of the Class B Common Shares immediately prior to the consummation of the IPO hold less than 50% of the total Class B Common Shares then in issue, and (ii) the third anniversary of the consummation of the Issuer's IPO."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"These securities are held directly by ACP Accelerant Holdings, L.P. Each of (i) ACP Insurance Management, LLC, as the general partner of ACP Accelerant Holdings, L.P., and (ii) Keoni Schwartz (\"Mr. Schwartz\"), as the sole owner and managing member of ACP Insurance Management, LLC, may be deemed to have voting and dispositive power over these securities, but disclaim beneficial ownership over these securities except to the extent of their respective pecuniary interest therein, if any."}],"balance_after":90196595,"derivative":{"underlying":"Class A Common Shares","underlying_shares":90196595},"source":{"system":"sec-edgar","filing":"0000905148-25-002639","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1997350/000090514825002639/form4.xml","form_type":"4"}},{"id":1079970,"issuer":{"id":4013,"kind":"organization","name":"Accelerant Holdings"},"owners":[{"id":77119,"kind":"person","name":"Schwartz Keoni Andrew","position":1,"cik":"0002009246","reported_name":"Schwartz Keoni Andrew","relationship":{"director":true,"ten_percent_owner":true}},{"id":77120,"kind":"organization","name":"ACP Accelerant Holdings, L.P.","position":2,"cik":"0002078270","reported_name":"ACP Accelerant Holdings, L.P.","relationship":{"ten_percent_owner":true}},{"id":77121,"kind":"organization","name":"ACP Insurance Management, LLC","position":3,"cik":"0002078277","reported_name":"ACP Insurance Management, LLC","relationship":{"ten_percent_owner":true}}],"security":"LP Interests of Accelerant Holdings LP","published_at":"2025-07-30T00:36:24.000Z","date":"2025-07-25","kind":"exercise","planned":false,"acquired":false,"shares":8491134079,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"In connection with the Issuer's initial public offering (\"IPO\"), these limited partnership interests of Accelerant Holdings LP were exchanged for Class B Common Shares of the Issuer in proportion to the economic interests represented by the limited partnership interests."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"In connection with the Issuer's initial public offering (\"IPO\"), these limited partnership interests of Accelerant Holdings LP were exchanged for Class B Common Shares of the Issuer in proportion to the economic interests represented by the limited partnership interests."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"In connection with the Issuer's initial public offering (\"IPO\"), these limited partnership interests of Accelerant Holdings LP were exchanged for Class B Common Shares of the Issuer in proportion to the economic interests represented by the limited partnership interests."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"These securities are held directly by ACP Accelerant Holdings, L.P. Each of (i) ACP Insurance Management, LLC, as the general partner of ACP Accelerant Holdings, L.P., and (ii) Keoni Schwartz (\"Mr. Schwartz\"), as the sole owner and managing member of ACP Insurance Management, LLC, may be deemed to have voting and dispositive power over these securities, but disclaim beneficial ownership over these securities except to the extent of their respective pecuniary interest therein, if any."}],"balance_after":0,"derivative":{"underlying":"Class B Common Shares","underlying_shares":90196595},"source":{"system":"sec-edgar","filing":"0000905148-25-002639","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1997350/000090514825002639/form4.xml","form_type":"4"}},{"id":1079969,"issuer":{"id":4013,"kind":"organization","name":"Accelerant Holdings"},"owners":[{"id":77119,"kind":"person","name":"Schwartz Keoni Andrew","position":1,"cik":"0002009246","reported_name":"Schwartz Keoni Andrew","relationship":{"director":true,"ten_percent_owner":true}},{"id":77120,"kind":"organization","name":"ACP Accelerant Holdings, L.P.","position":2,"cik":"0002078270","reported_name":"ACP Accelerant Holdings, L.P.","relationship":{"ten_percent_owner":true}},{"id":77121,"kind":"organization","name":"ACP Insurance Management, LLC","position":3,"cik":"0002078277","reported_name":"ACP Insurance Management, LLC","relationship":{"ten_percent_owner":true}}],"security":"Class A Common Shares","published_at":"2025-07-30T00:36:24.000Z","date":"2025-07-25","kind":"sale","planned":false,"acquired":false,"shares":326312,"price":21,"value":6852552.0,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F4","text":"These Class B Common Shares converted into Class A Common Shares on a 1-for-1 basis and then were sold pursuant to an underwriting agreement dated as of July 23, 2025, by and among the Issuer, the selling stockholders, and the underwriters named therein in connection with the Issuer's IPO."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F8","text":"These securities are held directly by ACP Accelerant Investment Holding Company II, Ltd. ACP Accelerant Holdings, L.P. is the sole owner of ACP Accelerant Investment Holding Company II, Ltd. 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