X0306 4 2018-04-10 0 0000876343 BIOTIME INC BTX 0001202529 WEST MICHAEL D 1010 ATLANTIC AVENUE, SUITE 102 ALAMEDA CA 94501 1 1 0 0 Co-Chief Executive Officer Common Shares, no par value 2018-04-10 4 M 0 1563 0.00 A 886278 D Common Shares, no par value 2018-04-10 4 F 0 541 2.49 D 885737 D Restricted Stock Units 0.00 2018-04-10 4 M 0 1563 0.00 D Common Shares 1563 12500 D Does not include 12,500 Restricted Stock Units payable in shares of the Issuer's common stock that have not vested as of the date of this Report and shares that may be acquired upon the exercise of certain stock options. Securities withheld for tax purposes exempt under Rule 16(b)-3 in connection with the vesting of 1,563 Restricted Stock Units, the grant of which was previously reported on a Form 4. Restricted Stock Units vested on April 10, 2018. /s/ Michael D. West 2018-04-12