UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): May 29, 2026

ACCELERANT HOLDINGS

(Exact Name of Registrant as Specified in its Charter)

Accelerant Holdings

c/o Accelerant Re (Cayman) Ltd.

Unit 106, Windward 3, Regatta Office Park,

West Bay Road, Grand Cayman, KY1-1108

1 (345) 743-4611

(Address, Including Zip Code, and Telephone Number, Including Area Code, of Registrant’s Principal Executive Offices)

Not Applicable

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☒

Item 7.01. Regulation FD Disclosure.

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☒ On May 29, 2026, Accelerant Holdings (the “Company”) issued a press release (the “Press Release”) announcing that Jeff Radke, Chairman and Chief Executive Officer, will be presenting at the William Blair Growth Stock Conference on Wednesday, June 3, 2026 at 10:20 a.m. Eastern Time. A live webcast of the presentation can be accessed from the investor relations section on the Company’s website at www.investor.accelerant.ai. Following the conference, a replay will be made available at the same location.

A copy of the Press Release is furnished as Exhibit 99.1 and is incorporated herein by reference.

The information contained in Item 7.01 of this Current Report on Form 8-K (as well as in Exhibit 99.1 attached hereto) is furnished and shall not be deemed to be “filed” for purposes of Section 18 of the Securities and Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, and such information shall not be deemed to be incorporated by reference into any of the Company’s filings under the Securities Act of 1933, as amended or the Exchange Act.

Item 9.01. Financial Statements and Exhibits

(d) Exhibits.

Signature

Pursuant to the requirements of the Exchange Act, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Dated: May 29, 2026