Exhibit 99.1 IMMEDIATE RELEASE Contact: Ashlee Dunston Director, Investor Relations and Public Affairs adunston@atyrpharma.com aTyr Pharma Announces Fourth Quarter and Full Year 2023 Results and Provides Corporate Update SAN DIEGO – March 14, 2024 – aTyr Pharma, Inc. (Nasdaq: LIFE) ("aTyr" or the "Company"), a clinical stage biotechnology company engaged in the discovery and development of first-in-class medicines from its proprietary tRNA synthetase platform, today announced fourth quarter and full year 20 ...