Accelerant Holdings

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

(Rule 14a-101)

SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the Securities

Exchange Act of 1934 (Amendment No. )

Filed by the Registrant☑

Filed by a Party other than the Registrant☐

Check the appropriate box:

ACCELERANT HOLDINGS

(Exact Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Accelerant Holdings

Unit 106, Windward 3

Regatta Office Park

West Bay Road, Grand Cayman

KY1-1108

March 27, 2026

Dear Shareholder:

On behalf of our Board of Directors, I cordially invite you to attend the 2026 Annual General Meeting of Shareholders of Accelerant Holdings, to be held on Tuesday, May 12, 2026 at 10:00 a.m. local time (British Summer Time) as a hybrid meeting, to be conducted both in person at the London Marriott Grosvenor Square, Grosvenor Sq, London W1K 6JP, United Kingdom and via webcast. Shareholders may attend, participate in, and vote at the Annual General Meeting through either format; however, all shareholders must pre-register in advance athttps://web.viewproxy.com/arx/2026, and only shareholders of record as of the record date, or their duly authorized proxy holders, who have completed such pre-registration will be entitled to participate and vote at the Annual General Meeting. We look forward to your attendance.

The accompanying Notice of Annual General Meeting of Shareholders and Proxy Statement describe the formal business to be acted upon by our shareholders, including the election of the three Class I directors named in this Proxy Statement; the ratification of the appointment of our independent registered public accounting firm; and to transact such other business as may properly come before the Annual General Meeting of Shareholders or any adjournments or postponements thereof.

Every shareholder’s vote is important and assists us in establishing the necessary quorum to conduct business at the Annual General Meeting of Shareholders. Regardless of the number of common shares you own, it is very important that your shares be represented at the Annual General Meeting of Shareholders. Accordingly, whether or not you intend to be present at the Annual General Meeting of Shareholders, we appreciate your prompt attention in voting and submitting your proxy. You may do this by completing, signing and dating the accompanying proxy card and returning it in the accompanying self-addressed, postage-paid return envelope. You also may authorize a proxy via the Internet at www.AALvote.com/ARX. Please follow the directions provided in the proxy statement. This will not prevent you from attending and voting in person at the Annual General Meeting of Shareholders, but will assure that your vote will be counted if you are unable to attend the Annual General Meeting of Shareholders.

Thank you for your investment in, and continued support of, Accelerant.

Sincerely,

Jeff Radke

Co-Founder, Chief Executive Officer and Director

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