All stock lists
Simulations Plus, Inc. (NASDAQ:SLP)
US · Delayed Price · Currency is USD
18.50+0.00 (+0.00%)
Insider Score
––Not scored
SLP Insider Score
Insiders filed in the last 90 days, but none of those trades qualified for scoring — round-trip buys and filings whose price is far off the market are excluded.
SLP Stock Insider Trading Activity
SLP stock’s insider trading shows 10 sales on the open market for an estimated $801.18K by company insiders over the last 6 months.
Not enough price history.
Insider Trading Activity (Form 4 Filings)
An insider trade occurs when an individual that has non-public information about a company buys or sells shares of that company’s stock. Examples of insiders include a company’s executive officers (CEO, CFO, COO), its board of directors, and its major shareholders. Insiders are required to submit their trading activity to the SEC through Form 4 filings.
Scored window · last 90 days0 qualifying buys0 insiders$0 bought— these are the numbers in the rankings table; the full history below shows every filing (buys, sells and older activity).
| Insider | Action | Shares | Avg Cost | Total | Δ Holdings | Held After | Date | Grade | Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| DiBella John Anthony II Other | Sell | 1,000 | $18.28 | $18.28K | 1.2% | 85,140 | Aug 3, 2026 | — | Form 4 |
| DiBella John Anthony II Other | Sell | 1,000 | $18.36 | $18.36K | 1.1% | 86,140 | Jul 6, 2026 | — | Form 4 |
| WOLTOSZ WALTER S Director | Sell | 4,177 | $18.44 | $77.02K | 0.1% | 3,202,131 | Jul 1, 2026 | — | Form 4 |
| Fiedler-Kelly Jill Other | Sell | 7,350 | $18.20 | $133.77K | 8.6% | 77,817 | Jun 16, 2026 | — | Form 4 |
| Fiedler-Kelly Jill Other | Option exercise | 7,350 | $10.05 | $73.87K | 9.4% | 85,167 | Jun 16, 2026 | — | Form 4 |
| Fiedler-Kelly Jill Other | Option exercise | 1,050 | $10.05 | $10.55K | 1.3% | 78,867 | Jun 15, 2026 | — | Form 4 |
| Fiedler-Kelly Jill Other | Sell | 1,050 | $16.51 | $17.34K | 1.3% | 77,817 | Jun 15, 2026 | — | Form 4 |
| DiBella John Anthony II Other | Sell | 1,000 | $16.50 | $16.50K | 1.1% | 87,140 | Jun 3, 2026 | — | Form 4 |
| WOLTOSZ VIRGINIA E Other | Sell | 15,000 | $17.43 | $261.45K | 0.5% | 3,252,800 | Jun 1, 2026 | — | Form 4 |
| Fiedler-Kelly Jill Other | Option exercise | 1,000 | $10.05 | $10.05K | 1.3% | 78,817 | May 11, 2026 | — | Form 4 |
| Fiedler-Kelly Jill Other | Sell | 1,000 | $16.53 | $16.53K | 1.3% | 77,817 | May 11, 2026 | — | Form 4 |
| WOLTOSZ WALTER S Director | Sell | 15,000 | $15.13 | $226.95K | 0.5% | 3,267,800 | May 4, 2026 | — | Form 4 |
| DiBella John Anthony II Other | Sell | 1,000 | $14.98 | $14.98K | 1.1% | 88,140 | May 4, 2026 | — | Form 4 |
| WEINER DANIEL L Director | Award | 2,117 | — | — | 14.7% | 16,547 | May 1, 2026 | — | Form 4 |
| Paglia John Kenneth Director | Award | 2,117 | — | — | 17.0% | 14,589 | May 1, 2026 | — | Form 4 |
| Evans Sharlene Director | Award | 2,117 | — | — | 14.1% | 17,173 | May 1, 2026 | — | Form 4 |
| WOLTOSZ WALTER S Director | Award | 2,117 | — | — | 0.1% | 3,282,800 | May 1, 2026 | — | Form 4 |
| DiBella John Anthony II Other | Sell | 1,000 | $13.37 | $13.37K | 1.1% | 89,140 | Apr 15, 2026 | — | Form 4 |
| DiBella John Anthony II Other | Option exercise | 10,300 | $9.71 | $100.01K | 12.9% | 90,140 | Feb 6, 2026 | — | Form 4 |
| WEINER DANIEL L Director | Award | 1,776 | — | — | 14.0% | 14,430 | Jan 30, 2026 | — | Form 4 |
| Evans Sharlene Director | Award | 1,776 | — | — | 13.4% | 15,056 | Jan 30, 2026 | — | Form 4 |
| WOLTOSZ WALTER S Director | Award | 1,776 | — | — | 0.1% | 3,280,683 | Jan 30, 2026 | — | Form 4 |
| Paglia John Kenneth Director | Award | 1,776 | — | — | 16.6% | 12,472 | Jan 30, 2026 | — | Form 4 |
| Fiedler-Kelly Jill Other | Option exercise | 8,950 | $9.71 | $86.90K | 13.0% | 77,817 | Jan 28, 2026 | — | Form 4 |
| WOLTOSZ WALTER S Director | Gift | 9,095 | — | — | 0.3% | 3,278,907 | Dec 18, 2025 | — | Form 4 |
| LaVange Lisa Director | Sell | 866 | $16.91 | $14.64K | 8.0% | 9,968 | Dec 1, 2025 | — | Form 4 |
| WEINER DANIEL L Director | Award | 1,771 | — | — | 16.3% | 12,654 | Nov 3, 2025 | — | Form 4 |
| LaVange Lisa Director | Award | 1,771 | — | — | 19.5% | 10,834 | Nov 3, 2025 | — | Form 4 |
| Paglia John Kenneth Director | Award | 1,771 | — | — | 19.8% | 10,696 | Nov 3, 2025 | — | Form 4 |
| WOLTOSZ WALTER S Director | Award | 1,771 | — | — | 0.1% | 3,288,002 | Nov 3, 2025 | — | Form 4 |
| Evans Sharlene Director | Award | 1,771 | — | — | 15.4% | 13,280 | Nov 3, 2025 | — | Form 4 |
| WOLTOSZ VIRGINIA E Other | Sell | 20,000 | $15.39 | $307.80K | 0.6% | 3,286,231 | Oct 1, 2025 | — | Form 4 |
What these mean— the action is the SEC’s own Form 4 transaction code. Only a buy or a sell is an open-market trade; the rest are transfers, awards and exercises, which is why they carry no price.
- Sell (S) — Open-market or private sale
- Award (A) — Grant or award from the company, not a purchase
- Option exercise (M) — Exercise or conversion of an exempt derivative
- Gift (G) — Bona fide gift
Disclaimer — Informational only — not investment advice. Insider transaction data is sourced from SEC Form 4 filings; market data from public feeds and may be delayed. The Insider Score is a proprietary score for research purposes and does not predict future performance. Always do your own research.