X0304 5 2011-12-31 0 0 1 0000876343 BIOTIME INC BTX 0000900815 TEW WILLIAM P PHD 1301 HARBOR BAY PARKWAY ALAMEDA CA 94502 0 1 0 0 Chief Commercial Officer Common Shares, no par value 47125 D Warrants to Purchase Common Shares 10.00 2011-03-21 2014-05-02 Common Shares 29247 29247 D Options to Purchase Common Shares 7.47 2018-03-20 Common Shares 25000 25000 D Options to Purchase Common Shares 4.17 2011-10-04 4 A 0 L 3850 0.00 A 2018-10-02 Common Shares 3850 3850 D Does not include shares that may be acquired upon the exercise of certain stock options, and shares that may be acquired upon the exercise of certain warrants. 1/48th of the number of options will vest and become exercisable at the end of each full month of employment after March 21, 2011. 1/48th of the number of options will vest and become exercisable at the end of each full month of employment after October 4, 2011. /s/ William P. Tew 2012-02-14