According to recent filings covering the 90 days ending January 14, 2026, the three most significant insider holders at Certara are Chief Executive Officer William F Feehery (2.36Mn shares), Director Mason P Slaine (660.32K shares), Director Sherilyn S Mccoy (621.14K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| William F Feehery | Chief Executive Officer | 2,360,769 | 12 Nov, 2025 |
| Mason P Slaine | 660,322 | 16 Nov, 2022 | |
| Sherilyn S Mccoy | 621,143 | 18 May, 2021 | |
| Michael Andrew Schemick | Chief Financial Officer | 522,895 | 03 Apr, 2023 |
| James E Iii Cashman | 468,440 | 22 May, 2025 | |
| Justin Edge | Pres. And Regulatory & Access | 394,764 | 05 Apr, 2022 |
| Craig R. Rayner | President And Integrated Drug Dev | 316,010 | 07 Sep, 2021 |
| Robert Aspbury | President And Predictive Tech | 307,176 | 03 Apr, 2025 |
| Jieun W. Choe | Chief Strategy & Marketing | 248,577 | 05 Apr, 2022 |
| Matthew M Walsh | 197,559 | 22 May, 2025 | |
| Judith Dickinson | Nan | 173,564 | 09 Apr, 2021 |
| Richard M. Traynor | Svp And General Counsel | 173,524 | 03 Apr, 2024 |
| Leif E Pedersen | President And Chief Commercal Off | 73,979 | 11 Sep, 2025 |
| Patrick F Smith | President And Drug Dev Solutions | 50,091 | 08 Oct, 2024 |
| John E Gallagher | President And Chief Commercal Off | 46,528 | 03 Apr, 2025 |
| Stephen M. Mclean | 42,000 | 23 Aug, 2022 | |
| Cynthia Collins | 36,089 | 22 May, 2025 | |
| Nancy Killefer | 36,089 | 22 May, 2025 | |
| Eran Broshy | 34,951 | 22 May, 2025 | |
| Rosemary A Crane | 29,915 | 22 May, 2025 | |
| Nicolette D Sherman | Chief Human Resources Officer | 24,358 | 03 Apr, 2024 |
| Daniel Corcoran | Svp And General Counsel | 16,221 | 02 Jun, 2025 |
| Drayton Virkler | President And Reg & Acces | 12,415 | 03 Apr, 2023 |
| John V W Reynders | 10,709 | 22 May, 2025 | |
| Carol Giltner Gallagher | 7,059 | 16 Jun, 2021 | |
| Rona Anhalt | Chief Human Resources Officer | 5,181 | 02 Jun, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 11 Nov, 2025 | William F Feehery | Common Stock | A | 24,096 | $8.30 | 2,360,769 | D | P |
| 09 Sep, 2025 | Leif E Pedersen | Common Stock | D | 51,224 | $10.92 | 73,979 | D | S |
| 09 Sep, 2025 | Leif E Pedersen | - | - | 73,979 | D | |||
| 30 May, 2025 | Rona Anhalt | - | - | 7,146 | D | |||
| 30 May, 2025 | Rona Anhalt | Common Stock | A | 7,146 | $0.00 | 7,146 | D | M |
| 30 May, 2025 | Rona Anhalt | Common Stock | D | 1,965 | $11.40 | 5,181 | D | F |
| 30 May, 2025 | Rona Anhalt | - | - | 5,181 | D | |||
| 30 May, 2025 | Daniel Corcoran | Common Stock | D | 2,298 | $11.40 | 5,642 | D | F |
| 30 May, 2025 | Daniel Corcoran | Common Stock | D | 4,309 | $11.40 | 16,221 | D | F |
| 30 May, 2025 | Daniel Corcoran | Comon Stock | A | 14,888 | $0.00 | 20,530 | D | M |
| 30 May, 2025 | Daniel Corcoran | Common Stock | A | 7,940 | $0.00 | 7,940 | D | M |
| 30 May, 2025 | Daniel Corcoran | - | - | 16,221 | D | |||
| 30 May, 2025 | Daniel Corcoran | - | - | 20,530 | D | |||
| 21 May, 2025 | James E Iii Cashman | Common Stock | A | 11,928 | $0.00 | 468,440 | D | M |
| 21 May, 2025 | Eran Broshy | Common Stock | A | 11,928 | $0.00 | 34,951 | D | M |
| 21 May, 2025 | Matthew M Walsh | Common Stock | A | 11,928 | $0.00 | 197,559 | D | M |
| 21 May, 2025 | Cynthia Collins | Common Stock | A | 11,928 | $0.00 | 36,089 | D | M |
| 21 May, 2025 | Rosemary A Crane | Common Stock | A | 11,928 | $0.00 | 29,915 | D | M |
| 21 May, 2025 | Nancy Killefer | Common Stock | A | 11,928 | $0.00 | 36,089 | D | M |
| 21 May, 2025 | John V W Reynders | Common Stock | A | 10,709 | $0.00 | 10,709 | D | M |