Certain Restricted Stock Units of aTyr Pharma, Inc. are subject to a Lock-Up Agreement Ending on 10-APR-2023. These Restricted Stock Units will be under lockup for 61 days starting from 8-FEB-2023 to 10-APR-2023.

Details:
Directors and executive officers have agreed that, without the prior written consent of RBC Capital Markets, LLC on behalf of the underwriters, they will not, during the Lock-Up Period offer, pledge, announce the intention to sell, sell, contract to sell, sell any option or contract to purchase, purchase any option or contract to sell, grant any option, right or warrant to purchase, make any short sale or otherwise transfer or dispose of, directly or indirectly, any shares of common stock or any securities convertible into, exercisable or exchangeable for or that represent the right to receive common stock for a period of 60 days after the date of this prospectus supplement.