aTYR PHARMA INC — Director's Dealing 2021

May 25, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: aTYR PHARMA INC (LIFE)
CIK: 0001339970
Period of Report: 2021-05-21

Reporting Person: DENYES NANCY (General Counsel)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-05-21	Employee Stock Option (Right to buy)	$4.45	A	59000	Acquired	2025-05-21	Common Stock (59000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common stock	3091	Direct

Footnotes

F1: Includes 178 shares acquired under that Company's 2015 Employee Stock Purchase Plan on May 17, 2021.

F2: The shares subject to this option shall vest and become exercisable in 48 equal monthly installments beginning June 21, 2021, such that this option will be fully exercisable on May 21, 2025. This option is subject to accelerated vesting upon termination without cause upon change of control of the issuer.