Updated Jul 16, 2026 · Last SEC filing 2026-07-08
Simulations Plus, Inc. (SLP) has filed 13 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-08. 5 Form 8-K material event filings were reported by SLP in the last 90 days. 6 Form 144 notices of proposed sale were filed for SLP stock. InsiderAlpha tracks every SLP SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SIC classification | Services-Computer Integrated Systems Design (SIC 7373) |
|---|---|
| SEC CIK | 0001023459 |
| Form 4 filings (90d) | 13 |
|---|---|
| Form 8-K filings (90d) | 5 |
| Form 144 notices (90d) | 6 |
| Latest Form 4 filing | 2026-07-08 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| DiBella John Anthony II | Chief Revenue Officer | S — Open-market sale | 1.0K | $18.36 | $18K | SEC | |
| WOLTOSZ WALTER S | Director | S — Open-market sale | 4.2K | $18.44 | $77K | SEC | |
| Fiedler-Kelly Jill | President, Services Solutions | S — Open-market sale | 7.3K | $18.20 | $134K | SEC | |
| Fiedler-Kelly Jill | President, Services Solutions | M — Option exercise | 7.3K | $10.05 | $74K | SEC | |
| Fiedler-Kelly Jill | President, Services Solutions | M — Option exercise | 1.1K | $10.05 | $11K | SEC | |
| Fiedler-Kelly Jill | President, Services Solutions | S — Open-market sale | 1.1K | $16.51 | $17K | SEC | |
| DiBella John Anthony II | Chief Revenue Officer | S — Open-market sale | 1.0K | $16.50 | $16K | SEC | |
| WOLTOSZ WALTER S | Director | S — Open-market sale | 15.0K | $17.43 | $261K | SEC | |
| Fiedler-Kelly Jill | President, Services Solutions | S — Open-market sale | 1.0K | $16.53 | $17K | SEC | |
| Fiedler-Kelly Jill | President, Services Solutions | M — Option exercise | 1.0K | $10.05 | $10K | SEC | |
| DiBella John Anthony II | Chief Revenue Officer | S — Open-market sale | 1.0K | $14.98 | $15K | SEC | |
| WOLTOSZ WALTER S | Director | S — Open-market sale | 15.0K | $15.13 | $227K | SEC | |
| Paglia John Kenneth | Director | A — Grant or award | 2.1K | $0.00 | — | SEC | |
| Evans Sharlene | Director | A — Grant or award | 2.1K | $0.00 | — | SEC | |
| WOLTOSZ WALTER S | Director | A — Grant or award | 2.1K | $0.00 | — | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for Simulations Plus, Inc. (SLP). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Fiedler-Kelly Jill | 9 | $262K |
| WOLTOSZ WALTER S | 4 | $565K |
| DiBella John Anthony II | 3 | $50K |
| Evans Sharlene | 1 | — |
| Paglia John Kenneth | 1 | — |
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in SLP insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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