Dorman Products Inc

Director and Executive Officer Trading Arrangements

On June 14, 2024, Mr. Steven L. Berman, Non-Executive Chairman of our Board of Directors, adopted a Rule 10b5-1 plan (“Rule 10b5-1 Plan”) intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act. The Rule 10b5-1 Plan covers shares of the Company’s common stock owned (i) directly by Mr. Berman, (ii) by certain family trusts for which Mr. Berman serves as co-trustee, and (iii) by certain family trusts for the benefit of Mr. Berman’s children. Among other things, the Rule 10b5-1 Plan provides for the sale of up to 175,000 shares of the Company's common stock held directly by Mr. Berman and up to 225,000 shares of the Company’s common stock held by such trusts. The Rule 10b5-1 Plan expires on September 15, 2025, or upon the earlier completion of all authorized transactions under such Rule 10b5-1 Plan.

During the quarter ended June 29, 2024, no other director or executive officer adopted orterminated any “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement” (as each term is defined in Item 408(a) of Registration S-K).