Certara, Inc. (CERT) Insider Ownership

Historic Insider Ownership Trends

CERT's three largest insider shareholders as of May 30, 2026 are William F Feehery (Chief Executive Officer, 2.36Mn shares), Mason P Slaine (Director, 660.32K shares), Michael Andrew Schemick (Chief Financial Officer, 522.89K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Mason P Slaine - 660,322 0 16 Nov, 2022
James E Iii Cashman - 468,440 0 22 May, 2025
Eran Broshy - 34,951 0 22 May, 2025
Matthew M Walsh - 197,559 0 22 May, 2025
Cynthia Collins - 36,089 0 22 May, 2025
Rosemary A Crane - 29,915 0 22 May, 2025
William F Feehery Chief Executive Officer 2,360,769 0 12 Nov, 2025
Leif E Pedersen President, Chief Commercal Off 110,045 0 03 Apr, 2026
Nancy Killefer - 36,089 0 22 May, 2025
John E Gallagher Chief Financial Officer 95,371 0 03 Apr, 2026
Craig R. Rayner President, Integrated Drug Dev 316,010 0 07 Sep, 2021
Jieun W. Choe Chief Strategy Marketing 248,577 0 05 Apr, 2022
Robert Aspbury President, Predictive Tech 332,442 0 03 Apr, 2026
Stephen M. Mclean - 42,000 0 23 Aug, 2022
Justin Edge Pres., Regulatory Access 394,764 0 05 Apr, 2022
Michael Andrew Schemick Chief Financial Officer 522,895 0 03 Apr, 2023
Richard M. Traynor Svp And General Counsel 173,524 0 03 Apr, 2024
Nicolette D Sherman Chief Human Resources Officer 24,358 0 03 Apr, 2024
Patrick F Smith President, Drug Dev Solutions 50,091 0 08 Oct, 2024
Drayton Virkler President, Reg Acces 12,415 0 03 Apr, 2023
Rona Anhalt Chief Human Resources Officer 11,883 0 03 Apr, 2026
Daniel Corcoran Svp And General Counsel 21,319 0 03 Apr, 2026
John V W Reynders - 10,709 0 22 May, 2025
Adrian Mckemey President, Drug Dev. Solutions 8,207 0 03 Apr, 2026

* 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.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
01 Apr, 2026 John E Gallagher Common Stock A 23,346 $0.00 69,874 D A
01 Apr, 2026 Daniel Corcoran Common Stock A 10,849 $0.00 27,070 D M
01 Apr, 2026 Adrian Mckemey Common Stock A 10,849 $0.00 10,849 D M
01 Apr, 2026 Leif E Pedersen Common Stock A 14,510 $0.00 88,489 D A
01 Apr, 2026 Adrian Mckemey Common Stock A 10,849 $0.00 10,849 D M
01 Apr, 2026 Daniel Corcoran Common Stock A 10,849 $0.00 27,070 D M
01 Apr, 2026 John E Gallagher Common Stock A 23,346 $0.00 69,874 D A
01 Apr, 2026 Leif E Pedersen Common Stock A 14,510 $0.00 88,489 D A
01 Apr, 2026 Rona Anhalt Common Stock A 9,764 $0.00 14,945 D M
01 Apr, 2026 Robert Aspbury Common Stock A 14,510 $0.00 321,686 D A
01 Apr, 2026 Leif E Pedersen Common Stock D 3,534 $5.70 84,955 D F
01 Apr, 2026 Adrian Mckemey Common Stock D 2,642 $5.70 8,207 D F
01 Apr, 2026 Rona Anhalt Common Stock D 3,062 $5.70 11,883 D F
01 Apr, 2026 Daniel Corcoran Common Stock D 5,751 $5.70 21,319 D F
01 Apr, 2026 John E Gallagher Common Stock D 7,775 $5.70 62,099 D F
01 Apr, 2026 Adrian Mckemey Common Stock D 2,642 $5.70 8,207 D F
01 Apr, 2026 Daniel Corcoran Common Stock D 5,751 $5.70 21,319 D F
01 Apr, 2026 Leif E Pedersen Common Stock D 3,534 $5.70 84,955 D F
01 Apr, 2026 John E Gallagher Common Stock D 7,775 $5.70 62,099 D F
01 Apr, 2026 Robert Aspbury Common Stock D 6,821 $5.70 314,865 D F