X0306 4 2017-10-13 0 0000890394 MoSys, Inc. MOSY 0001296527 Perham Leonard charles PO BOX 2610 SARATOGA CA 95070 1 1 0 0 CEO Option to purchase common stock 20.5 2017-10-13 4 J 0 25000 D 2025-03-30 Common Stock 25000 0 D Option to purchase common stock 44.6 2017-10-13 4 J 0 10000 D 2023-06-06 Common Stock 10000 0 D Option to purchase common stock 35.4 2017-10-13 4 J 0 20000 D 2017-11-01 Common Stock 20000 0 D On October 13, 2017, the reporting person and the Company agreed to cancel a stock option granted on March 30, 2015 to purchase 25,000 shares of common stock. The option was previously reported on a Form 4 filed with the SEC on April 2, 2015. The canceled option was exercisable in full as of January 1, 2017 . Shares and price have been adjusted for to reflect 1-for-10 reverse stock split effected in February 2017. On October 13, 2017, the reporting person and the Company agreed to cancel a stock option granted on June 6, 2013 to purchase 10,000 shares of common stock. The option was previously reported on a Form 4 filed with the SEC on June 10, 2013. The canceled option was exercisable in full as of April 1, 2017. Shares and price have been adjusted for to reflect 1-for-10 reverse stock split effected in February 2017. On October 13, 2017, the reporting person and the Company agreed to cancel a stock option granted on November 1, 2011 to purchase 20,000 shares of common stock. The option was previously reported on a Form 4 filed with the SEC on November 4, 2011. The canceled option was exercisable in full as of November 1, 2013 . Shares and price have been adjusted for to reflect 1-for-10 reverse stock split effected in February 2017. C.Leitner by power of attny 2017-10-16