American Coastal Insurance Corp 2025年度报告

☑ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934For the fiscal year ended December 31, 2025 OR ☐TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF1934 For the transition period _____ to _____ Commission File Number 001-35761American Coastal Insurance Corporation (Exact Name of Registrant as Specified in Its Charter) 75-3241967 Delaware (State or Other Jurisdiction ofIncorporation or Organization) (IRS Employer Identification Number) 570 Carillon Parkway, Suite 100 33716 (Zip Code) 727-633-0851(Telephone number, including area code) (Former name, former address and former fiscal year, if changed since last report) Securities registered pursuant to Section 12(b) of the Act: Trading Symbol(s)Name of Each Exchange on Which Registered Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.Yes☐No☑ Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.Yes☐No☑ Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject tosuch filing requirements for the past 90 days.Yes☑No☐ Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).Yes☑No☐ Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting companyor an emerging growth company. See definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerginggrowth company” in Rule 12b-2 of the Exchange Act. Accelerated filer☑Smaller reporting company☐Emerging growth company☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying withany new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.☐ Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).Yes☐No☑ Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of itsinternal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C 7262(b)) by the registered public accountingfirm that prepared or issued its audit report.☑ If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant includedin the filing reflect the correction of an error to previously issued financial statements.☐ Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensationreceived by any of the registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b).☐ The aggregate market value of shares of the registrant’s common stock held by non–affiliates of the registrant was approximately $277,582,000 asof June 30, 2025, calculated using the closing sales price reported for such date on the Nasdaq Stock Market LLC (Nasdaq). For purposes of thisdisclosure, shares of common stock held by persons who hold more than 10% of the outstanding shares of common stock and shares held byexecutive officers and directors of the registrant have been excluded because such persons may be deemed to be affiliates. This determination ofaffiliate status is not necessarily a conclusive determination for other purposes. As of March 2, 2026, 48,656,205 shares of the registrant’s common stock were outstanding. DOCUMENTS INCORPORATED BY REFERENCEPart III of this Form 10-K incorporates by reference certain information from the Proxy Statement for the 2025 Annual Meeting of Stockholders to be filed with the Securities and Exchange Commission within 120 days after the end of our fiscal year ended December 31, 2025. Signatures Throughout this Annual Report on Form 10-K (Form 10-K), we present amounts in all tables in thousands, except forshare amounts, per share amounts, policy and claim counts or where more specific language or context indicates a differentpresentation. In the narrative sections of this Form 10-K, we show full values rounded to the nearest thousand. FORWARD-LOOKING STATEMENTS Statements in this Form 10-K or in documents incorporated by reference contain or may contain “forward-looking statements”within the meaning of the Private Securities Litigation Reform Act of 1995. These forwar