Certara President Leif Pedersen's Equity Award Vesting and Tax Withholding Transactions

This Form 4 filing reports equity transactions for Leif E. Pedersen, President and Chief Commercial Officer of Certara, Inc. On April 1, 2026, Pedersen received multiple equity awards through the company's 2020 Incentive Plan. He acquired 14,510 shares of common stock from performance stock units (PSUs) that vested based on achievement of performance objectives over a three-year period. Additionally, he received shares from the vesting of restricted stock units (RSUs) granted in 2023, 2024, and 2025, totaling 33,167 shares. Concurrently, 11,611 shares were disposed of to satisfy tax withholding obligations at a price of $5.70 per share. Following these transactions, Pedersen's total direct ownership increased to 110,045 shares of Certara common stock. The filing demonstrates the executive compensation structure and tax withholding practices for equity awards at Certara.