X0306 4 2019-03-11 0 0001708599 AgeX Therapeutics, Inc. AGE 0001202529 WEST MICHAEL D 1010 ATLANTIC AVENUE, SUITE 102 ALAMEDA CA 94501 1 1 0 0 Chief Executive Officer Option to Purchase Common Stock 4.28 2019-03-11 4 A 0 100000 0.00 A 2029-03-10 Common Stock 100000 100000 D Restricted Stock Units 2019-03-11 4 A 0 50000 0.00 A Common Stock 50000 50000 D One quarter shall vest on March 11, 2020 and the remaining shall vest monthly over 36 months, based upon continuous service. Grant of restricted stock units under the AgeX 2017 Equity Incentive Plan. Each restricted stock unit represents a contingent right to receive one share of Common Stock. One quarter of the restricted stock units shall vest upon the completion of 12 months of continuous employment from the date of grant and the balance shall vest in twelve equal quarterly installments upon completion of each quarter of continuous service. /s/Michael D. West 2019-03-13