X0306 4 2018-03-15 0001572552 Asterias Biotherapeutics, Inc. AST 0001509725 Mulroy Michael H. C/O ASTERIAS BIOTHERAPEUTICS, INC. 6300 DUMBARTON CIRCLE FREMONT CA 94555 true true President and CEO Common Stock 2018-03-15 4 A 0 94872 0 A 107060 D Common Stock 2018-03-15 4 F 0 28358 1.95 D 78702 D Stock Options 1.95 2018-03-15 4 A 0 200000 0 A 2028-03-14 Common Stock 200000 200000 D Stock Options 3.7 2027-06-25 Common Stock 800000 800000 D Shares withheld for tax purposes exempt under Rule 16(b)-3 in connection with the grant of 94,782 shares of restricted stock, which is reported herewith on this Form 4. Subject to Mr. Mulroy's continued employment with the Company, 25% of the granted stock options vest on the first anniversary of the grant date, and the remaining 75% of the stock options in equal monthly installments over 36 months commencing after the first anniversary of the grant date. The grant date of these options was March 14, 2018. The stock options are exercisable upon vesting. Subject to Mr. Mulroy's continued employment with the Company, the stock options vest in equal monthly installments over 48 months commencing on July 31, 2017. The stock options are exercisable upon vesting. /s/ Michael H. Mulroy 2018-03-19