{"transactions":[{"id":703079,"issuer":{"id":4013,"kind":"organization","name":"Accelerant Holdings"},"owners":[{"id":28597,"kind":"person","name":"Sternberg Matthew David","position":1,"cik":"0002008628","reported_name":"Sternberg Matthew David","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"COO, Risk Exchange"}}],"security":"Class A Common Shares","published_at":"2026-07-28T01:38:12.000Z","date":"2026-07-27","kind":"sale","planned":true,"acquired":false,"shares":17568,"price":14.6406,"value":257206.0608,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 7, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $14.44 to $14.84, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price."}],"balance_after":596482,"source":{"system":"sec-edgar","filing":"0001628280-26-049906","document":"wk-form4_1785202688.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1997350/000162828026049906/wk-form4_1785202688.xml","form_type":"4"}},{"id":703078,"issuer":{"id":4013,"kind":"organization","name":"Accelerant Holdings"},"owners":[{"id":28597,"kind":"person","name":"Sternberg Matthew David","position":1,"cik":"0002008628","reported_name":"Sternberg Matthew David","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"COO, Risk Exchange"}}],"security":"Class A Common Shares","published_at":"2026-07-28T01:38:12.000Z","date":"2026-07-23","kind":"tax_withholding","planned":true,"acquired":false,"shares":3910,"price":13.77,"value":53840.7,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents Class A Common Shares withheld, pursuant to Issuer policy, to satisfy tax withholding obligations upon the settlement of vested Restricted Share Units.  Does not reflect a discretionary transaction nor an open market sale of securities."}],"balance_after":614050,"source":{"system":"sec-edgar","filing":"0001628280-26-049906","document":"wk-form4_1785202688.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1997350/000162828026049906/wk-form4_1785202688.xml","form_type":"4"}},{"id":777464,"issuer":{"id":4013,"kind":"organization","name":"Accelerant Holdings"},"owners":[{"id":28597,"kind":"person","name":"Sternberg Matthew David","position":1,"cik":"0002008628","reported_name":"Sternberg Matthew David","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"COO, Risk Exchange"}}],"security":"Class A Common Shares","published_at":"2026-05-16T01:50:48.000Z","date":"2026-05-13","kind":"grant","planned":false,"acquired":true,"shares":279329,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents an award of Restricted Stock Units (\"RSUs\") granted on May 13, 2026. The RSUs are scheduled to vest as to twenty-five percent (25%) of the RSUs on the one-year anniversary of the Grant Date and as to six and one-quarter percent (6-1/4%) of the RSUs on the first day of each of the twelve (12) calendar quarters beginning after such anniversary. Each RSU represents a contingent right to receive one Class A common share upon settlement."}],"balance_after":617960,"source":{"system":"sec-edgar","filing":"0001628280-26-035780","document":"wk-form4_1778896245.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1997350/000162828026035780/wk-form4_1778896245.xml","form_type":"4"}},{"id":832621,"issuer":{"id":4013,"kind":"organization","name":"Accelerant Holdings"},"owners":[{"id":28597,"kind":"person","name":"Sternberg Matthew David","position":1,"cik":"0002008628","reported_name":"Sternberg Matthew David","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"COO, Risk Exchange"}}],"security":"Class A Common Shares","published_at":"2026-03-20T22:43:58.000Z","date":"2026-03-18","kind":"grant","planned":false,"acquired":true,"shares":180667,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents an award of Restricted Stock Units granted on March 18, 2026.  The RSUs are scheduled to vest as to twenty-five percent (25%) of the RSUs on the one-year anniversary of the Grant Date and as to six and one-quarter percent (6-1/4%) of the RSUs on the first day of each of the twelve (12) calendar quarters beginning after such anniversary."}],"balance_after":338631,"source":{"system":"sec-edgar","filing":"0001628280-26-020273","document":"wk-form4_1774046635.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1997350/000162828026020273/wk-form4_1774046635.xml","form_type":"4"}},{"id":994258,"issuer":{"id":4013,"kind":"organization","name":"Accelerant Holdings"},"owners":[{"id":28597,"kind":"person","name":"Sternberg Matthew David","position":1,"cik":"0002008628","reported_name":"Sternberg Matthew David","relationship":{"officer":true,"officer_title":"COO, Risk Exchange"}}],"security":"Class A Common Shares","published_at":"2025-11-19T21:11:23.000Z","date":"2025-11-17","kind":"purchase","planned":false,"acquired":true,"shares":5700,"price":13.1045,"value":74695.65,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 above reflects the weighted average purchase price. This transaction was executed in multiple trades at prices ranging from $13.08 to $13.12, inclusive. The reporting person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of Class A Common Shares purchased at each respective price within the range set forth in footnote 1 of this Form 4."}],"balance_after":157964,"source":{"system":"sec-edgar","filing":"0000905148-25-004138","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1997350/000090514825004138/form4.xml","form_type":"4"}},{"id":1079961,"issuer":{"id":4013,"kind":"organization","name":"Accelerant Holdings"},"owners":[{"id":28597,"kind":"person","name":"Sternberg Matthew David","position":1,"cik":"0002008628","reported_name":"Sternberg Matthew David","relationship":{"officer":true,"officer_title":"COO, Risk Exchange"}}],"security":"Class A Common Shares","published_at":"2025-07-30T00:39:07.000Z","date":"2025-07-25","kind":"grant","planned":false,"acquired":true,"shares":152264,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents Restricted Stock Units (\"RSUs\"), each one of which represents the contingent right to receive one Class A Common Share."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Represents Restricted Stock Units (\"RSUs\"), each one of which represents the contingent right to receive one Class A Common Share."}],"balance_after":152264,"source":{"system":"sec-edgar","filing":"0000905148-25-002640","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1997350/000090514825002640/form4.xml","form_type":"4"}}]}