Form 4 Filing for Certara, Inc. - Officer Transaction

This filing details transactions made by Adrian McKemey, President of Drug Dev. Solutions at Certara, Inc. On April 1, 2026, McKemey acquired 10,849 shares of Common Stock through the settlement of Restricted Stock Units (RSUs) granted under the 2020 Incentive Plan. These RSUs were granted on May 20, 2025, with one-third vesting on April 1, 2026, and the remainder vesting in two equal installments on April 1, 2027, and April 1, 2028. The acquisition of shares occurred at a price of $0.0 per share. Additionally, on the same date, 2,642 shares of Common Stock were disposed of, with a transaction price of $5.70 per share, to cover tax withholding obligations related to the RSU vesting. Following these transactions, McKemey holds 8,207 shares of Common Stock directly. The post-transaction shares for RSUs stand at 21,698.