Heritage Insurance Holdings, Inc.

During the three months ended June 30, 2025, Richard Widdicombe, Chairman of the Company’s Board, Ernie Garateix, a Director of the Company and the Company's Chief Executive Officer and Kirk Lusk, the Company's Chief Financial Officer, each adopted a “Rule 10b5-1 trading arrangement” as defined in Regulation S-K Item 408 (each individually a "Rule 10b-1 Trading Plan"), as follows:

On May 17, 2025, Mr. Widdicombe adopted a Rule 10b5-1 Trading Plan providing for the sale of the Company's Common Stock that is intended to satisfy the affirmative defense conditions of Exchange Act Rule 10b5-1(c). Mr. Widdicombe’s Rule 10b5-1 Trading Plan provides for the sale of up to 250,000 shares of Common Stock pursuant to one or more limit orders until January 22, 2026.

On June 13, 2025, Messrs. Garateix and Lusk each adopted a Rule 10b5-1 Trading Plan providing for the sale of the Company's Common Stock that is intended to satisfy the affirmative defense conditions of Exchange Act Rule 10b5-1(c). Mr. Garateix’s Rule 10b5-1 Trading Plan provides for the sale of up to 100,000 shares of Common Stock pursuant to one or more limit orders until September 19, 2026. Mr. Lusk’s Rule 10b5-1 Trading Plan provides for the sale of up to 60,000 shares of Common Stock pursuant to one or more limit orders until May 12, 2026.

No other officers or directors, as defined in Rule 16a-1(f), adopted and/orterminated a “Rule 10b5-1 trading arrangement” or a “non-Rule 10b5-1 trading arrangement,” as defined in Regulation S-K Item 408, during the quarter ended March 31, 2024.