X0306 4 2018-07-18 0 0001522602 CohBar, Inc. CWBR 0001322959 Cundy Kenneth C 1455 ADAMS DRIVE, SUITE 2050 MENLO BUSINESS PARK MENLO PARK CA 94025 0 1 0 0 Chief Scientific Officer Stock Option (right to buy) 2.40 2018-07-18 4 A 0 500000 0.00 A 2027-01-29 Common Stock 500000 500000 D On January 29, 2017, the reporting person was granted an option to purchase 500,000 shares of common stock. Half of the shares subject to the option are subject to vesting based upon the achievement of certain company performance goals. The remaining shares subject to the option are subject to vesting ratably over a period of 24 months following achievement of the performance goals, subject to the continued employment of the reporting person during such period. The performance goals were achieved, resulting in the vesting of 250,000 shares subject to the option as of July 18, 2018. The remaining shares will vest ratably over a period of 24 months from July 18, 2018. /s/ Jeffrey F. Biunno, Attorney-in-fact for Kenneth Cundy 2018-07-20