X0306 4 2019-01-02 0 0001378950 U.S. Auto Parts Network, Inc. PRTS 0001761840 Peker Lev 16941 KEEGAN AVENUE CARSON CA 90746 1 1 0 0 Chief Executive Officer Stock Options (Right to Buy) 0.97 2019-01-02 4 A 0 1000000 0 A 2029-01-01 Common Stock 1000000 1000000 D Granted under the 2016 Equity Plan. Twenty-five percent of the shares of stock subject to the option vest on the first anniversary of the grant date, and the remainder of which will vest in equal monthly installments thereafter over three years, subject to such executive's service to the Company through such dates. /s/ David Eisler, as Attorney-in-Fact for Lev Peker 2019-01-03