Dorman Products Inc

Amended and Restated Cash Bonus Plan

On February 21, 2025, the Board of Directors of the Company amended and restated the Dorman Products, Inc. 2018 Cash Bonus Plan. Among other things, the revised plan, referred to as the Amended and Restated Cash Bonus Plan, removes the $2 million limit placed on amounts paid to any participant in any plan year. A copy of the Amended and Restated Cash Bonus Plan is filed as Exhibit 10.5 to this Annual Report on Form 10-K.

Rule 10b5-1 Trading Plans

The following table describes contracts, instructions, or written plans for the purchase or sale of the Company’s common stock intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) (each, a “Rule 10b5-1 Plan”) entered into or terminated during the quarter ended December 31, 2024 by our directors and officers (as defined under Rule 16b-1(f) of the Exchange Act). There were nonon-Rule 10b5-1 trading arrangements entered into or terminated by our directors and officers during the quarter ended December 31, 2024.

1 Each Rule 10b5-1 Plan expires upon the date shown or, if earlier, upon completion of all authorized transactions under such plan.

2 Plan includes (i) the sale of up to 10,263 shares of the Company’s common stock , (ii) the sale of up to 2,150 shares of the Company’s common stock upon the vesting of time-based restricted stock units (“RSUs”) and (iii) the acquisition of up to 807 shares of common stock upon the exercise of up to 807 vested stock options . The actual number of shares sold may be less based on tax withholdings.

3 Plan includes (i) the sale of up to 4,540 shares of the Company’s common stock upon the vesting of time-based RSUs, (ii) the sale of up 1,369 shares of the Company’s common stock upon the vesting of performance-based restricted stock units (“PRSUs”), and (iii) the potential exercise of vested stock options and the associated sale of up to 5,737 shares of the Company’s common stock. The number of shares included assumes that the PRSU vests at 100% of the target award amount. The actual number of PRSUs that may vest can vary between 0% - 200% of the target award of PRSUs, subject to the achievement of certain performance conditions as set forth in the PRSU award agreement, less shares to be withheld for tax withholding obligations. The actual number of shares sold may vary based on tax withholdings and performance and vesting conditions of the awards.

4 Plan covers shares of the Company’s common stock owned (i) by certain family trusts for which Mr. Berman serves as co-trustee, and (ii) by certain family trusts for the benefit of Mr. Berman’s children. Plan does not include shares owned directly by Mr. Berman.