Simulations Plus, Inc (SLP) insider trading
Every open-market stock purchase and sale by Simulations Plus, Inc executives, directors, large shareholders and members of Congress, from SEC Form 4 filings. Sector: Other.
Insider activity at a glance
- Walter S Woltosz (10% owner) and 1 other sold $114K in the last 90 days.
- Last insider buy: Walter S Woltosz (10% owner), $1.4M, 6 years ago.
Last 12 months: insiders bought $0 (0 buys) and sold $829K (12 sales). Last close $18.34 on Aug 6, 2026.
Recent SLP insider trades
| Date | Insider | Trade | Value |
|---|---|---|---|
| Aug 3, 2026 | John Anthony DiBella II (C-suite exec) | Sold | $18.3K |
| Jul 6, 2026 | John Anthony DiBella II (C-suite exec) | Sold | $18.4K |
| Jul 1, 2026 | Walter S Woltosz (10% owner) | Sold | $77K |
| Jun 16, 2026 | Jill Fiedler-Kelly (President) | Sold | $134K |
| Jun 16, 2026 | Jill Fiedler-Kelly (President) | Bought (not open market) | — |
| Jun 15, 2026 | Jill Fiedler-Kelly (President) | Sold | $17.3K |
| Jun 15, 2026 | Jill Fiedler-Kelly (President) | Bought (not open market) | — |
| Jun 3, 2026 | John Anthony DiBella II (C-suite exec) | Sold | $16.5K |
| Jun 1, 2026 | Walter S Woltosz (10% owner) | Sold | $261K |
| May 11, 2026 | Jill Fiedler-Kelly (President) | Sold | $16.5K |
| May 11, 2026 | Jill Fiedler-Kelly (President) | Bought (not open market) | — |
| May 4, 2026 | Walter S Woltosz (10% owner) | Sold | $227K |
| May 4, 2026 | John Anthony DiBella II (C-suite exec) | Sold | $15K |
| May 1, 2026 | Walter S Woltosz (10% owner) | Bought (not open market) | — |
| May 1, 2026 | Sharlene Evans (Director) | Bought (not open market) | — |
| May 1, 2026 | John Kenneth Paglia (Director) | Bought (not open market) | — |
| May 1, 2026 | Daniel L Weiner (Director) | Bought (not open market) | — |
| Apr 15, 2026 | John Anthony DiBella II (C-suite exec) | Sold | $13.4K |
| Feb 6, 2026 | John Anthony DiBella II (C-suite exec) | Bought (not open market) | — |
| Jan 30, 2026 | Daniel L Weiner (Director) | Bought (not open market) | — |
| Jan 30, 2026 | Sharlene Evans (Director) | Bought (not open market) | — |
| Jan 30, 2026 | Walter S Woltosz (10% owner) | Bought (not open market) | — |
| Jan 30, 2026 | John Kenneth Paglia (Director) | Bought (not open market) | — |
| Jan 28, 2026 | Jill Fiedler-Kelly (President) | Bought (not open market) | — |
| Dec 18, 2025 | Walter S Woltosz (10% owner) | Sold (not open market) | — |
Who's trading SLP
- John Anthony DiBella II, C-suite exec: sold $81.5K (5 sales), last Aug 3, 2026
- Walter S Woltosz, 10% owner: sold $565K (3 sales), last Jul 1, 2026
- Jill Fiedler-Kelly, President: sold $168K (3 sales), last Jun 16, 2026
- John Kenneth Paglia, Director: other filings, last May 1, 2026
- Daniel L Weiner, Director: other filings, last May 1, 2026
- Sharlene Evans, Director: other filings, last May 1, 2026
- Lisa LaVange, Director: sold $14.6K (1 sale), last Dec 1, 2025
- Shawn Oconnor, CEO: other filings, last Oct 16, 2025
- William W Frederick, CFO: other filings, last Oct 16, 2025
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