Heritage Insurance Holdings Inc

Report of Indepen dent Registered Public Accounting Firm

on Supplemental Information

To the Board of Directors and Stockholders

We have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated financial statements of Heritage Insurance Holdings, Inc. (the “Company”) as of and for the year ended December 31, 2023 and issued our report thereon dated March 13, 2024, which expressed an unqualified opinion on those consolidated financial statements and is included at Item 8 in this Form 10-K. The supplemental information contained in the consolidated financial statement schedules of the Company in the accompanying index at Item 15 in this Form 10-K has been subjected to audit procedures performed in conjunction with the audit of the Company's consolidated financial statements. The supplemental information is the responsibility of the Company's management. Our audit procedures included determining whether the supplemental information reconciles to the consolidated financial statements or the underlying accounting and other records, as applicable, and performing procedures to test the completeness and accuracy of the information presented in the supplemental information. In our opinion, the supplemental information is fairly stated, in all material respects, in relation to the consolidated financial statements as a whole.

/s/ Plante & Moran, PLLC

Chicago, Illinois

March 13, 2024