X0609 4 2026-09-14 0 0000868780 Dorman Products, Inc. DORM 0001775023 Braun Joseph P. false C/O DORMAN PRODUCTS, INC. 3400 WALNUT STREET COLMAR PA 18915 0 1 0 0 SVP and General Counsel 0 Common Stock 2026-09-14 4 M 0 4708 84.93 A 25131.5828 D Common Stock 2026-09-14 4 F 0 3159 126.60 D 21972.5828 D Employee Stock Option (right to buy) 84.93 2026-09-14 4 M 0 4708 0 D 2027-05-09 Common Stock 4708 2989 D Represents shares withheld to cover the exercise price and withholding tax obligations of the options exercised. This option vested in four equal annual installments beginning on May 9, 2020, which was the first anniversary of the date of grant. The filing of this Statement shall not be construed as an admission (a) that the person filing this Statement is, for the purposes of Section 16 of the Securities Exchange Act of 1934, as amended, the beneficial owner of any securities covered by this Statement, or (b) that this Statement is legally required to be filed by such person. /s/ Frank J. Mahr, by Power of Attorney 2026-09-16