X0306 4 2013-03-28 0 0000868780 Dorman Products, Inc. DORM 0001205405 BERMAN STEVEN L C/O DORMAN PRODUCTS, INC. 3400 WALNUT STREET COLMAR PA 18915 1 1 1 0 Chief Executive Officer Common Stock 2013-03-28 4 S 0 4500 37.19 D 213970 I By Children in Trust Common Stock 1309403 D Common Stock 1884964 I By Grantor Retained Annuity Trust Common Stock 99857 I By Charitable Remainder Trust Common Stock 25509 I By 401(k) These shares were sold by trusts for the benefit of children of the reporting person. The sales reported on this Form 4 by the trusts were effected pursuant to Rule 10b5-1 Trading Plans adopted on March 15, 2013. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $37.05 to $37.26. The reporting person undertakes to provide to Dorman Products, Inc., any security holder of Dorman Products, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. 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 March 31, 2013, the reporting person had 16,492 units in the Issuer's 401(k) Retirement Plan and Trust, which units consisted of 25,509 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 securities covered by this Statement, or (b) that this Statement is legally required to be filed by such person. /s/ Steven L. Berman 2013-04-01