SLP
Simulations Plus Inc
NASDAQ: SLP · HEALTHCARE · HEALTH INFORMATION SERVICES
$18.50
+0.00% today
Updated 2026-10-28
Market cap
$374.16M
P/E ratio
46.25
P/S ratio
4.56x
EPS (TTM)
$0.40
Dividend yield
—
52W range
$11 – $21
Volume
0.2M
Simulations Plus Inc (SLP) Insider transactions
Net insider activity
Net selling (3,942,576 shares)
Buy transactions
33
Sell transactions
67
All transactions
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-10-06 | WOLTOSZ, WALTER S | Director, 10% Owner | Sale | 5,000 | — | — |
| 2026-10-06 | WOLTOSZ, WALTER S | Director, 10% Owner | Sale | 3,202,131 | $18.50 | $59.24M |
| 2026-10-06 | WEINER, DANIEL L | Director | Sale | 5,000 | — | — |
| 2026-10-06 | WEINER, DANIEL L | Director | Sale | 2,000 | — | — |
| 2026-10-06 | WEINER, DANIEL L | Director | Sale | 16,547 | $18.50 | $306119.50 |
| 2026-10-06 | PAGLIA, JOHN KENNETH | Director | Sale | 6,000 | — | — |
| 2026-10-06 | PAGLIA, JOHN KENNETH | Director | Sale | 5,000 | — | — |
| 2026-10-06 | PAGLIA, JOHN KENNETH | Director | Sale | 14,589 | $18.50 | $269896.50 |
| 2026-10-06 | OCONNOR, SHAWN | Chief Executive Officer | Sale | 50,000 | — | — |
| 2026-10-06 | OCONNOR, SHAWN | Chief Executive Officer | Sale | 32,500 | — | — |
| 2026-10-06 | OCONNOR, SHAWN | Chief Executive Officer | Sale | 25,000 | — | — |
| 2026-10-06 | OCONNOR, SHAWN | Chief Executive Officer | Sale | 20,000 | — | — |
| 2026-10-06 | FREDERICK, WILLIAM W | EVP/CFO | Sale | 32,500 | — | — |
| 2026-10-06 | FREDERICK, WILLIAM W | EVP/CFO | Sale | 25,000 | — | — |
| 2026-10-06 | FREDERICK, WILLIAM W | EVP/CFO | Sale | 20,000 | — | — |
| 2026-10-06 | FREDERICK, WILLIAM W | EVP/CFO | Sale | 10,000 | — | — |
| 2026-10-06 | FREDERICK, WILLIAM W | EVP/CFO | Sale | 2,100 | $18.50 | $38850.00 |
| 2026-10-06 | FIEDLER-KELLY, JILL | President, Services Solutions | Sale | 27,500 | — | — |
| 2026-10-06 | FIEDLER-KELLY, JILL | President, Services Solutions | Sale | 15,000 | — | — |
| 2026-10-06 | FIEDLER-KELLY, JILL | President, Services Solutions | Sale | 9,300 | — | — |
| 2026-10-06 | FIEDLER-KELLY, JILL | President, Services Solutions | Sale | 7,500 | — | — |
| 2026-10-06 | FIEDLER-KELLY, JILL | President, Services Solutions | Sale | 7,000 | — | — |
| 2026-10-06 | FIEDLER-KELLY, JILL | President, Services Solutions | Sale | 5,000 | — | — |
| 2026-10-06 | FIEDLER-KELLY, JILL | President, Services Solutions | Sale | 77,817 | $18.50 | $1.44M |
| 2026-10-06 | EVANS, SHARLENE | Director | Sale | 17,173 | $18.50 | $317700.50 |
| 2026-10-06 | DIBELLA, JOHN ANTHONY II | Chief Revenue Officer | Sale | 113,300 | — | — |
| 2026-10-06 | DIBELLA, JOHN ANTHONY II | Chief Revenue Officer | Sale | 27,500 | — | — |
| 2026-10-06 | DIBELLA, JOHN ANTHONY II | Chief Revenue Officer | Sale | 26,206 | — | — |
| 2026-10-06 | DIBELLA, JOHN ANTHONY II | Chief Revenue Officer | Sale | 15,000 | — | — |
| 2026-10-06 | DIBELLA, JOHN ANTHONY II | Chief Revenue Officer | Sale | 9,300 | — | — |
| 2026-10-06 | DIBELLA, JOHN ANTHONY II | Chief Revenue Officer | Sale | 7,500 | — | — |
| 2026-10-06 | DIBELLA, JOHN ANTHONY II | Chief Revenue Officer | Sale | 2,589 | — | — |
| 2026-10-06 | DIBELLA, JOHN ANTHONY II | Chief Revenue Officer | Sale | 85,140 | $18.50 | $1.58M |
| 2026-08-03 | DIBELLA, JOHN ANTHONY II | Chief Revenue Officer | Sale | 1,000 | $18.28 | $18280.00 |
| 2026-07-06 | DIBELLA, JOHN ANTHONY II | Chief Revenue Officer | Sale | 1,000 | $18.36 | $18360.00 |
| 2026-07-01 | WOLTOSZ, WALTER S | Director, 10% Owner | Sale | 4,177 | $18.44 | $77023.88 |
| 2026-06-16 | FIEDLER-KELLY, JILL | President, Services Solutions | Sale | 7,350 | — | — |
| 2026-06-16 | FIEDLER-KELLY, JILL | President, Services Solutions | Buy | 7,350 | $10.05 | $73867.50 |
| 2026-06-15 | FIEDLER-KELLY, JILL | President, Services Solutions | Sale | 1,050 | — | — |
| 2026-06-15 | FIEDLER-KELLY, JILL | President, Services Solutions | Sale | 1,050 | $16.51 | $17335.50 |
| 2026-06-03 | DIBELLA, JOHN ANTHONY II | Chief Revenue Officer | Sale | 1,000 | $16.50 | $16500.00 |
| 2026-06-01 | WOLTOSZ, WALTER S | Director, 10% Owner | Sale | 15,000 | $17.43 | $261450.00 |
| 2026-05-11 | FIEDLER-KELLY, JILL | President, Services Solutions | Sale | 1,000 | — | — |
| 2026-05-11 | FIEDLER-KELLY, JILL | President, Services Solutions | Sale | 1,000 | $16.53 | $16530.00 |
| 2026-05-04 | WOLTOSZ, WALTER S | Director, 10% Owner | Sale | 15,000 | $15.13 | $226950.00 |
| 2026-05-04 | DIBELLA, JOHN ANTHONY II | Chief Revenue Officer | Sale | 1,000 | $14.98 | $14980.00 |
| 2026-05-01 | WOLTOSZ, WALTER S | Director, 10% Owner | Buy | 2,117 | — | — |
| 2026-05-01 | WEINER, DANIEL L | Director | Buy | 2,117 | — | — |
| 2026-05-01 | PAGLIA, JOHN KENNETH | Director | Buy | 2,117 | — | — |
| 2026-05-01 | EVANS, SHARLENE | Director | Buy | 2,117 | — | — |
| 2026-04-15 | DIBELLA, JOHN ANTHONY II | Chief Revenue Officer | Sale | 1,000 | $13.37 | $13370.00 |
| 2026-02-06 | DIBELLA, JOHN ANTHONY II | Chief Revenue Officer | Sale | 10,300 | — | — |
| 2026-02-06 | DIBELLA, JOHN ANTHONY II | Chief Revenue Officer | Buy | 10,300 | $9.71 | $100013.00 |
| 2026-01-30 | WOLTOSZ, WALTER S | Director, 10% Owner | Buy | 1,776 | — | — |
| 2026-01-30 | WEINER, DANIEL L | Director | Buy | 1,776 | — | — |
| 2026-01-30 | PAGLIA, JOHN KENNETH | Director | Buy | 1,776 | — | — |
| 2026-01-30 | EVANS, SHARLENE | Director | Buy | 1,776 | — | — |
| 2026-01-28 | FIEDLER-KELLY, JILL | President, Services Solutions | Sale | 8,950 | — | — |
| 2026-01-28 | FIEDLER-KELLY, JILL | President, Services Solutions | Buy | 8,950 | $9.71 | $86904.50 |
| 2025-12-18 | WOLTOSZ, WALTER S | Director, 10% Owner | Sale | 9,095 | — | — |
| 2025-12-01 | LAVANGE, LISA | Director | Sale | 866 | $16.91 | $14644.06 |
| 2025-11-03 | WOLTOSZ, WALTER S | Director, 10% Owner | Buy | 1,771 | — | — |
| 2025-11-03 | WEINER, DANIEL L | Director | Buy | 1,771 | — | — |
| 2025-11-03 | PAGLIA, JOHN KENNETH | Director | Buy | 1,771 | — | — |
| 2025-11-03 | LAVANGE, LISA | Director | Buy | 1,771 | — | — |
| 2025-11-03 | EVANS, SHARLENE | Director | Buy | 1,771 | — | — |
| 2025-10-16 | OCONNOR, SHAWN | Chief Executive Officer | Buy | 50,000 | — | — |
| 2025-10-16 | FREDERICK, WILLIAM W | EVP/CFO | Buy | 32,500 | — | — |
| 2025-10-16 | FIEDLER-KELLY, JILL | President, Services Solutions | Buy | 27,500 | — | — |
| 2025-10-16 | DIBELLA, JOHN ANTHONY II | Chief Revenue Officer | Buy | 27,500 | — | — |
| 2025-10-01 | WOLTOSZ, WALTER S | Director, 10% Owner | Sale | 20,000 | $15.39 | $307800.00 |
| 2025-09-02 | LAVANGE, LISA | Director | Sale | 867 | $14.10 | $12224.70 |
| 2025-08-01 | WOLTOSZ, WALTER S | Director, 10% Owner | Buy | 2,074 | — | — |
| 2025-08-01 | WEINER, DANIEL L | Director | Buy | 2,074 | — | — |
| 2025-08-01 | PAGLIA, JOHN KENNETH | Director | Buy | 2,074 | — | — |
| 2025-08-01 | LAVANGE, LISA | Director | Buy | 2,074 | — | — |
| 2025-08-01 | LAVANGE, LISA | Director | Sale | 867 | $12.93 | $11210.31 |
| 2025-08-01 | EVANS, SHARLENE | Director | Buy | 2,074 | — | — |
| 2025-07-01 | WOLTOSZ, WALTER S | Director, 10% Owner | Sale | 12,224 | $18.58 | $227121.92 |
| 2025-07-01 | WOLTOSZ, WALTER S | Director, 10% Owner | Sale | 7,776 | $17.94 | $139501.44 |
| 2025-06-02 | WOLTOSZ, WALTER S | Director, 10% Owner | Sale | 15,500 | $26.72 | $414160.00 |
| 2025-06-02 | WOLTOSZ, WALTER S | Director, 10% Owner | Sale | 2,700 | $27.71 | $74817.00 |
| 2025-06-02 | WOLTOSZ, WALTER S | Director, 10% Owner | Sale | 1,000 | $30.57 | $30570.00 |
| 2025-06-02 | WOLTOSZ, WALTER S | Director, 10% Owner | Sale | 700 | $29.13 | $20391.00 |
| 2025-06-02 | WOLTOSZ, WALTER S | Director, 10% Owner | Sale | 100 | $31.36 | $3136.00 |
| 2025-05-01 | WOLTOSZ, WALTER S | Director, 10% Owner | Sale | 10,604 | $33.78 | $358203.12 |
| 2025-05-01 | WOLTOSZ, WALTER S | Director, 10% Owner | Sale | 9,396 | $33.20 | $311947.20 |
| 2025-05-01 | WOLTOSZ, WALTER S | Director, 10% Owner | Buy | 786 | — | — |
| 2025-05-01 | WEINER, DANIEL L | Director | Buy | 786 | — | — |
| 2025-05-01 | PAGLIA, JOHN KENNETH | Director | Buy | 786 | — | — |
| 2025-05-01 | LAVANGE, LISA | Director | Buy | 786 | — | — |
| 2025-05-01 | EVANS, SHARLENE | Director | Buy | 786 | — | — |
| 2025-04-01 | WOLTOSZ, WALTER S | Director, 10% Owner | Sale | 17,400 | $24.01 | $417774.00 |
| 2025-04-01 | WOLTOSZ, WALTER S | Director, 10% Owner | Sale | 2,600 | $24.62 | $64012.00 |
| 2025-03-03 | WOLTOSZ, WALTER S | Director, 10% Owner | Sale | 20,000 | $28.68 | $573600.00 |
| 2025-02-03 | WOLTOSZ, WALTER S | Director, 10% Owner | Sale | 14,421 | $34.06 | $491179.26 |
| 2025-02-03 | WOLTOSZ, WALTER S | Director, 10% Owner | Sale | 5,579 | $33.53 | $187063.87 |
| 2025-02-03 | WOLTOSZ, WALTER S | Director, 10% Owner | Buy | 787 | — | — |
| 2025-02-03 | WEINER, DANIEL L | Director | Buy | 787 | — | — |
| 2025-02-03 | PAGLIA, JOHN KENNETH | Director | Buy | 787 | — | — |
Frequently asked questions
Are SLP insiders buying or selling?
Over the transactions on record, SLP insiders have been net sellers, with about $67.53M in stock sold across 67 sales, against 3 open-market purchases.
Does insider selling at SLP mean the stock will fall?
Not by itself. Most executive selling is pre-scheduled through 10b5-1 plans filed months in advance, and insiders sell for diversification, taxes, and liquidity far more often than out of any view on the price. Insider buying is the stronger signal, especially when several insiders buy around the same time, because there is usually only one reason to put personal cash into the stock.
Which SLP insiders are selling the most?
Recent selling is concentrated in a few names. WOLTOSZ, WALTER S accounts for the largest share on record, with about $63.43M sold. Selling by one or two individuals matters less than broad selling across the whole leadership team, which is the pattern worth watching.