X0306 4 2017-02-12 0 0000868780 Dorman Products, Inc. DORM 0001544745 KEALEY MICHAEL C/O DORMAN PRODUCTS, INC. 3400 EAST WALNUT STREET COLMAR PA 18915 0 1 0 0 SVP, Product Common Stock 2017-02-12 4 F 0 541 69.95 D 31338 D Common Stock 367 I By 401(k) These shares were withheld by the issuer upon the vesting of a restricted stock award to satisfy Mr. Kealey'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. The shares are represented by units held in a unitized stock fund through the issuer's 401(k) Retirement Plan and Trust. The unitized stock fund of the issuer's 401(k) Retirement Plan and Trust consists of cash and common stock in amounts that vary from time to time. As of December 31, 2016, the reporting person had 239 units in the issuer's 401(k) Retirement Plan and Trust, which units consisted of 367 shares of common stock. 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/ Thomas J. Knoblauch, by Power of Attorney 2017-02-14