X0306 4 2016-12-15 0 0001339970 aTYR PHARMA INC LIFE 0001236447 SCHIMMEL PAUL 3545 JOHN HOPKINS COURT, SUITE #250 SAN DIEGO CA 92121 1 0 0 0 Common Stock 2016-09-23 5 G 0 E 12572 0.00 D 40440 D Common Stock 2016-09-23 5 G 0 E 12572 0.00 A 646814 I See Footnote Common Stock 2016-12-15 4 P 0 40000 2.4978 A 686814 I See Footnote Common Stock 2016-12-16 4 P 0 10000 2.3973 A 696814 I See Footnote Common Stock 283581 I See Footnote There shares are owned directly by Schimmel Revocable Trust U/A Dtd 9/6/2000. The Reporting Person and his spouse are trustees of the Schimmel Revocable Trust U/A Dtd 9/6/2000. Represents weighted price for the shares. The shares were purchased at prices ranging from $2.3469 to $2.6411 per share. The reporting person will provide to the Securities and Exchange Commission staff, the issuer, or any security holder of the issuer, upon request, full information regarding the number of shares purchased at each separate price. These shares are owned directly by Paul R. Schimmel Prototype PSP. The Reporting Person is the trustee of the Paul R. Schimmel Prototype PSP. Nancy D. Krueger, Attorney-in-Fact 2016-12-19