X0609 4 2026-05-11 0001827090 Certara, Inc. CERT 0001834221 Aspbury Robert false C/O CERTARA, INC. 4 RADNOR CORPORATE CENTER, SUITE 350 RADNOR PA 19087 false true false false PRESIDENT, PREDICTIVE TECH 0 Performance Stock Units 2026-05-11 4 D 0 68348 0 D Common Stock 68348 0 D Performance Stock Units 2026-05-11 4 A 0 68348 0 A Common Stock 68348 68348 D Restricted Stock Units 2026-05-11 4 A 0 86419 0 A 2029-04-01 Common Stock 86419 86419 D Restricted Stock Units 2026-05-11 4 A 0 246913 0 A 2029-04-01 Common Stock 246913 246913 D Performance Stock Units 2026-05-11 4 A 0 129629 0 A Common Stock 129629 129629 D Reflects the amendment to Certara, Inc. ("Company") performance stock units ("PSUs") originally granted on May 20, 2025, pursuant to the terms of the 2025 Long-Term Incentive Plan for Company executives approved by the Compensation Committee of the Company's Board of Directors, under the Certara 2020 Incentive Plan (the "2020 Incentive Plan"). Each amended PSU represents a conditional right to receive one share of Company common stock. The reporting person will be entitled to receive a number of shares between 0% and 200% of the target amount reported based on the Company's performance against certain amended total shareholder return thresholds through the period ending on March 31, 2028. The amendment to the PSUs may be deemed to be a cancellation of the "old" PSUs and an acquisition of the "new" PSUs. Each restricted stock unit ("RSU") was granted on May 11, 2026, under the 2020 Incentive Plan and represents a right to receive one share of common stock or the cash equivalent. The RSUs will vest and settle in three equal installments on April 1, 2027, April 1, 2028, and April 1, 2029. Each Company PSU was granted on May 11, 2026, pursuant to the terms of the 2026 Long-Term Incentive Plan for Company executives approved by the Compensation Committee of the Company's Board of Directors, under the 2020 Incentive Plan. Each PSU represents a conditional right to receive one share of Company common stock. The reporting person will be entitled to receive a number of shares between 0% and 200% of the target amount reported based on the Company's performance against certain total shareholder return thresholds through the period ending on March 31, 2029. /s/ Daniel D. Corcoran, as Attorney-in-Fact for Robert Aspbury 2026-05-12