X0206 3 2019-03-01 0 0001408278 Synacor, Inc. SYNC 0001289134 Rendino Kevin C/O 180 DEGREE CAPITAL CORP. 7 N. WILLOW STREET, SUITE 4B MONTCLAIR NJ 07042 1 0 0 0 Common Stock 2839206 I See footnote. Director Stock Option (right to purchase) 1.74 2029-02-28 Common Stock 50000 D 1,597,806 of the shares are held directly by 180 Degree Capital Corp. ("180 Degree") and 1,241,400 of the shares are held directly by 180.2 SPV Series - a Series of 180 Degree Capital Management, LLC ("180.2 SPV Series"). 180 Degree is the investment manager and managing member of 180.2 SPV Series. The Reporting Person is one of two directors of 180 Degree sharing voting and investment power over the shares held by 180 Degree and 180.2 SPV Series. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein. The option was granted to the Reporting Person in connection with his appointment to Issuer's Board of Directors. 100% of the option was immediately exercisable on March 1, 2019 (the date of grant). Shares purchased upon exercise of the option are subject to repurchase by the Issuer until vested. 25% of the shares subject to the option vest upon completion of 12 months of continuous service after March 1, 2019 and the remainder vest in 36 equal monthly installments thereafter, subject to the Reporting Person's continuous service through such dates. Pursuant to an assignment and assumption agreement between the Reporting Person and 180 Degree, the Reporting Person has assigned all economic and beneficial interest in this option (and the underlying shares of common stock) to 180 Degree. /s/ Timothy J. Heasley, attorney-in-fact 2019-03-05