List of insiders holdings for Simulations Plus Inc.:
- Shares directly owned by the insider.
- Shares indirectly owned by the insider.
- Total shares owned by the insider (sum of shares directly and indirectly owned).
- Total market value if available.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
| # | Insider Holder Name | Report Date Time | Shares Owned Directly Indirectly | Total Shares Owned | Filing |
| 1 | WOLTOSZ WALTER S WOLTOSZ VIRGINIA E Director 10% Owner | 2025-11-04 16:36:01 | 3,288,002 0 | 3,288,002 | Form 4 |
| 2 | WOLTOSZ WALTER S Director 10% Owner | 2025-12-22 16:06:51 | 3,278,907 0 | 3,278,907 | Form 4 |
| 3 | Grasela Thaddeus Henry Jr President | 2018-03-13 11:22:56 | 79,763 0 | 79,763 | Form 4 |
| 4 | DAHLEN JEFFREY A President of Words+ subsidiary | 2009-04-09 16:43:49 | 71,000 0 | 71,000 | Form 4 |
| 5 | WEISS RICHARD R Director | 2012-02-27 16:10:17 | 69,624 0 | 69,624 | Form 4 |
| 6 | CREELEY RONALD F Vice President, Marketing | 2009-06-19 10:39:38 | 61,595 0 | 61,595 | Form 4 |
| 7 | OCONNOR SHAWN Chief Executive Officer | 2025-10-17 17:02:47 | 50,000 0 | 50,000 | Form 4 |
| 8 | D ARGENIO DAVID Z Former Director Director | 2017-05-26 11:55:32 | 33,608 0 | 33,608 | Form 4 |
| 9 | FREDERICK WILLIAM W EVP/CFO | 2025-10-17 17:02:10 | 32,500 0 | 32,500 | Form 4 |
| 10 | DiBella John Anthony II Chief Revenue Officer | 2025-10-17 17:00:21 | 27,500 0 | 27,500 | Form 4 |
| 11 | Fiedler-Kelly Jill President, Services Solutions | 2025-10-17 17:01:30 | 27,500 0 | 27,500 | Form 4 |
| 12 | Howell Brett Business Unit President | 2023-10-23 17:06:52 | 15,000 0 | 15,000 | Form 4 |
| 13 | Nguyen Nguyen VP of Human Resources | 2021-05-03 16:05:16 | 14,000 0 | 14,000 | Form 3 |
| 14 | Evans Sharlene Director | 2025-11-04 16:32:31 | 13,280 0 | 13,280 | Form 4 |
| 15 | WEINER DANIEL L Director | 2025-11-04 16:34:48 | 12,654 0 | 12,654 | Form 4 |
| 16 | Paglia John Kenneth Director | 2025-11-04 16:33:20 | 10,696 0 | 10,696 | Form 4 |
| 17 | LaVange Lisa Director | 2025-12-02 16:14:15 | 9,968 0 | 9,968 | Form 4 |
| 18 | Szot Daniel Chief Revenue Officer | 2024-10-21 16:43:47 | 7,500 0 | 7,500 | Form 4 |
| 19 | BERAN MOMOKO A Resigned CFO | 2013-11-27 14:22:47 | 0 0 | 0 | Form 4 |
| 20 | Rosenberger Harold Wayne Director | 2015-01-09 12:40:28 | 0 0 | 0 | Form 5 |
| 21 | RAYMER MICHAEL E Business Unit President | 2024-06-21 16:31:03 | 0 0 | 0 | Form 3 |
| 22 | Chang Steven President, Immunetrics | 2023-10-24 16:30:07 | 0 0 | 0 | Form 4 |
| 23 | Ralph David L. Director | 2021-11-30 16:25:15 | 0 0 | 0 | Form 4 |
| 24 | KNEISEL JOHN ROBERT Former CFO | 2020-12-02 07:52:02 | 0 0 | 0 | Form 4 |