8 insiders reported 76 Form 4 transactions for Simulations Plus, Inc. (SLP) over the past 18 months (most recent 2026-08-04). Recent activity: DiBella John Anthony II (Chief Revenue Officer) Sell 1,000 shares, DiBella John Anthony II (Chief Revenue Officer) Sell 1,000 shares, WOLTOSZ WALTER S (Director) Sell 4,177 shares, WOLTOSZ VIRGINIA E (10% Owner) Sell 4,177 shares, Fiedler-Kelly Jill (President, Services Solutions) Buy 7,350 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-04 | DiBella John Anthony II | Chief Revenue Officer | Sell | 1,000 | $18,280 |
| 2026-07-08 | DiBella John Anthony II | Chief Revenue Officer | Sell | 1,000 | $18,360 |
| 2026-07-06 | WOLTOSZ WALTER S | Director | Sell | 4,177 | $77,024 |
| 2026-07-06 | WOLTOSZ VIRGINIA E | 10% Owner | Sell | 4,177 | $77,024 |
| 2026-06-17 | Fiedler-Kelly Jill | President, Services Solutions | Buy | 7,350 | $73,868 |
| 2026-06-17 | Fiedler-Kelly Jill | President, Services Solutions | Sell | 7,350 | $133,770 |
| 2026-06-16 | Fiedler-Kelly Jill | President, Services Solutions | Buy | 1,050 | $10,552 |
| 2026-06-16 | Fiedler-Kelly Jill | President, Services Solutions | Sell | 1,050 | $17,336 |
| 2026-06-04 | DiBella John Anthony II | Chief Revenue Officer | Sell | 1,000 | $16,500 |
| 2026-06-02 | WOLTOSZ WALTER S | Director | Sell | 15,000 | $261,450 |
| 2026-06-02 | WOLTOSZ VIRGINIA E | 10% Owner | Sell | 15,000 | $261,450 |
| 2026-05-13 | Fiedler-Kelly Jill | President, Services Solutions | Sell | 1,000 | $16,530 |
| 2026-05-13 | Fiedler-Kelly Jill | President, Services Solutions | Buy | 1,000 | $10,050 |
| 2026-05-05 | DiBella John Anthony II | Chief Revenue Officer | Sell | 1,000 | $14,980 |
| 2026-05-05 | WOLTOSZ WALTER S | Director | Sell | 15,000 | $226,950 |
| 2026-05-05 | WOLTOSZ VIRGINIA E | 10% Owner | Sell | 15,000 | $226,950 |
| 2026-05-01 | WOLTOSZ WALTER S | Director | Buy | 2,117 | $0 |
| 2026-05-01 | Paglia John Kenneth | Director | Buy | 2,117 | $0 |
| 2026-05-01 | Evans Sharlene | Director | Buy | 2,117 | $0 |
| 2026-05-01 | WEINER DANIEL L | Director | Buy | 2,117 | $0 |
| 2026-04-16 | DiBella John Anthony II | Chief Revenue Officer | Sell | 1,000 | $13,370 |
| 2026-02-09 | DiBella John Anthony II | Chief Revenue Officer | Buy | 10,300 | $100,013 |
| 2026-02-02 | WOLTOSZ VIRGINIA E | Insider | Buy | 1,776 | $0 |
| 2026-02-02 | WOLTOSZ WALTER S | Director | Buy | 1,776 | $0 |
| 2026-02-02 | WEINER DANIEL L | Director | Buy | 1,776 | $0 |
Source: SEC Form 4 filings · as of 2026-08-04