Form DEFA14A Accelerant Holdings

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

SCHEDULE 14A

PROXY STATEMENT PURSUANT TO SECTION 14(A) OF THE

SECURITIES EXCHANGE ACT OF 1934

Filed by the Registrant ☒

Filed by a party other than the Registrant ☐

Check the appropriate box:

ACCELERANT HOLDINGS

(Name of Registrant as Specified In Its Charter)

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

Payment of Filing Fee (Check the appropriate box):

The following social media post was made to the LinkedIn account of Accelerant Holdings on August 13, 2026

Additional Information and Where to Find It

This communication is being made in respect of the Agreement and Plan of Merger (the “Merger Agreement”) among Accelerant Holdings, a Cayman Islands exempted company (the “Company”), Cherry Tree BidCo, a Cayman Islands exempted company (“Parent”), and Cherry Tree Merger Sub, a Cayman Islands exempted company and a wholly owned subsidiary of Parent (“Merger Sub”) and the proposed

transaction involving the Company, Parent and Merger Sub (the “Merger”). The Company intends to file with the Securities and Exchange Commission (the “SEC”) a proxy statement (the “Proxy Statement”) in connection with a special meeting of the Company’s shareholders for purposes of approving the transactions contemplated by the Merger Agreement, and other relevant documents in connection therewith. The Company and certain participants in the merger intend to file a transaction statement on Schedule 13E-3 (the “Schedule 13E-3”) relating to the proposed Merger, if required. The Company may also file other relevant documents with the SEC regarding the Merger Agreement and the proposed Merger. This communication is not a substitute for the Proxy Statement or any other document that the Company may file with the SEC. The definitive Proxy Statement (when available) will be sent or given to the shareholders of the Company and will contain important information about the Merger Agreement and the proposed Merger and related matters. INVESTORS AND SHAREHOLDERS OF THE COMPANY ARE URGED TO READ THE DEFINITIVE PROXY STATEMENT, THE SCHEDULE 13E-3 (INCLUDING ANY AMENDMENTS OR SUPPLEMENTS THERETO) AND ANY OTHER RELEVANT DOCUMENTS THAT MAY BE FILED WITH THE SEC BY THE COMPANY, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THESE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE COMPANY AND THE MERGER AGREEMENT AND THE PROPOSED MERGER. You may obtain copies of all documents filed by the Company with the SEC regarding this transaction, free of charge, at the SEC’s website, www.sec.gov or from the Company’s website at www.accelerant.ai.

Participants in the Solicitation

The Company and certain of its directors and executive officers may be deemed to be participants in the solicitation of proxies in respect of the Merger. Information regarding the Company’s directors and executive officers, including a description of their direct and indirect interests, by security holdings or otherwise, is contained in the “Proposal One Election of Directors,” “Directors,” “Director Compensation,” “Executive Officers,” “Executive Compensation” and “Security Ownership of Certain Beneficial Owners and Management” sections of the Company’s proxy statement for its 2026 annual general meeting of shareholders, which was filed with the SEC on March 30, 2026, and will be contained in the Proxy Statement to be filed by the Company. Any changes in the holdings of the Company’s securities by its directors and executive officers from the amounts set forth in the proxy statement for its 2026 annual general meeting of shareholders have been reflected in Forms 3, 4 and 5, filed with the SEC. The Company’s shareholders may obtain additional information regarding the direct and indirect interests of the participants in the solicitation of proxies in connection with the Merger, including the interests of the Company’s directors and executive officers in the Merger, which may be different from those of the Company’s shareholders generally, by reading the Proxy Statement and any other relevant documents that are filed or will be filed with the SEC relating to the Merger. You may obtain copies of all documents filed by the Company with the SEC regarding this transaction, free of charge, at the SEC’s website, www.sec.gov or from the Company’s website at www.accelerant.ai.

No Offer

No person has commenced soliciting proxies in connection with the Merger Agreement and the proposed Merger referenced in this communication, and this communication is neither an offer to purchase nor a solicitation of an offer to sell securities.

Cautionary Note Regarding Forward-Looking Statements

This communication contains forward-looking statements. Statements contained in this communication other than statements of historical fact are forward-looking statements, including statements regarding the Merger and the other transactions contemplated by the Merger Agreement. In some cases, you can identify these statements by forward-looking words such as “may,” “might,” “will,” “should,” “expects,” “plans,”

“anticipates,” “believes,” “estimates,” “predicts,” “potential,” “likely” or “continue,” the negative of these terms and other comparable terminology. These statements are only predictions based on the Company’s expectations and projections about future events as of the date of this Current Report on Form 8-K and are subject to a number of risks, uncertainties and assumptions that may prove incorrect, any of which could cause actual results to differ materially from those expressed or implied by such statements. Important factors, risks and uncertainties that could cause actual results to differ materially from forward-looking statements include but are not limited to: (i) the risk that the Merger may not be completed in a timely manner or at all, which may adversely affect our business and the price of our Class A common shares; (ii) the timing to consummate the Merger, or the occurrence of any event, change, or other circumstances that could give rise to the termination of the Merger Agreement, including circumstances requiring a party to pay the other party a termination fee pursuant to the Merger Agreement; (iii) the failure to satisfy the conditions to the consummation of the Merger, and the other transactions contemplated thereby; (iv) the risk that a governmental or regulatory approval that may be required for the Merger is not obtained or is obtained subject to conditions that are not anticipated; (v) the effect of the pendency of the Merger on our business relationships, operating results and business generally; (vi) certain restrictions during the pendency of the Merger that may impact our ability to pursue certain business opportunities or strategic transactions; (vii) risks that the Merger disrupts current plans and operations; (viii) risks related to diverting management’s attention from our ongoing business operations; (ix) the outcome of any legal proceedings that may be instituted against the parties to the Merger Agreement or their respective directors, managers or officers, including the effects of any outcomes related thereto; (x) our ability to retain, hire and integrate skilled personnel, and maintain relationships with key business partners and customers, and others with whom we do business, in light of the proposed Merger; (xi) unexpected costs, charges or expenses resulting from the Merger; (xii) risks that the benefits of the Merger are not realized when and as expected; and (xiii) those risks described under the heading “Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2025 filed with the SEC on March 18, 2026. New risks emerge from time to time, and it is not possible for our management to predict all risks, nor can management assess the impact of all factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statement the Company makes. Investors are cautioned not to place undue reliance on any such forward-looking statements, which speak only as of the date they are made. Except as otherwise required by law, the Company undertakes no obligation to update any forward-looking statement, whether as a result of new information, future events or otherwise.