X0306 4 2013-03-13 0 0000868780 Dorman Products, Inc. DORM 0001544245 ARACE LOU C/O DORMAN PRODUCTS, INC. 3400 EAST WALNUT STREET COLMAR PA 18915 0 1 0 0 SVP, Supply Chain Common Stock 2013-03-13 4 F 0 612 36.67 D 9388 D These shares were withheld by the issuer upon the vesting of a restricted stock award to satisfy Mr. Arace's tax withholding obligations. Such withholding is treated as a disposition of securities under Section 16 of the Securities Exchange Act of 1934, as amended. On June 15, 2012, Dorman Products, Inc. paid a stock dividend to all Common Stock holders of record on June 1, 2012, of one share of Common Stock for each share of Common Stock outsanding, resulting in the reporting person's ownership of additional shares of Common Stock. Share amounts have been adjusted to reflect the dividend paid on June 15, 2012. 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 equity securities covered by this Statement, or (b) that this Statement is legally required to be filed by such person. /s/ Lou Arace 2013-03-15