Exhibit 99.1 Certara Reports Second Quarter 2025 Financial Results Reiterates Full Year 2025 Financial Guidance Second Quarter Highlights: "Our commercial team has continued to field significant interest from customers seeking to expand their use of model- informed drug development," said William F. Feehery, Chief Executive Officer. "We are excited about software product enhancements and new product introductions that will expand our market leading offering and deliver sustainable long- term growth." "We ar ...