There have been 50 recent insider transactions recorded for Simulations Plus, Inc. (SLP), including 32 buys and 17 sells. Total insider buying was valued at $3.87M and total insider selling at $3.48M.
Notable insiders with recent activity include Dibella John Anthony Ii, Weiner Daniel L, Woltosz Walter S. Insider transactions can provide insights into how company leadership views the stock's valuation and future prospects.
Insider Transactions — SLP
| Date |
Name |
Role |
Transaction |
Shares |
Avg. Price |
Value |
Shares Owned |
| 2026-02-06 |
Dibella John Anthony Ii |
Chief Revenue Officer |
Option Exercise (Sell) |
10,300 |
$9.71 |
$100.01K |
- |
| 2026-01-30 |
Weiner Daniel L |
Director |
RSU Award |
1,776 |
- |
- |
14,430 |
| 2026-01-30 |
Woltosz Walter S |
10 Percent Owner |
RSU Award |
1,776 |
- |
- |
3,280,683 |
| 2026-01-30 |
Paglia John Kenneth |
Director |
RSU Award |
1,776 |
- |
- |
12,472 |
| 2026-01-30 |
Evans Sharlene |
Director |
RSU Award |
1,776 |
- |
- |
15,056 |
| 2026-01-28 |
Fiedler-kelly Jill |
President, Services Solutions |
Option Exercise (Sell) |
8,950 |
$9.71 |
$86.9K |
- |
| 2025-12-18 |
Woltosz Walter S |
10 Percent Owner |
Gift (Given) |
9,095 |
- |
- |
3,278,907 |
| 2025-12-01 |
Lavange Lisa |
Director |
Informative Sell |
866 |
$16.91 |
$14.64K |
9,968 |
| 2025-11-03 |
Weiner Daniel L |
Director |
RSU Award |
1,771 |
- |
- |
12,654 |
| 2025-11-03 |
Woltosz Walter S |
10 Percent Owner |
RSU Award |
1,771 |
- |
- |
3,288,002 |
| 2025-11-03 |
Paglia John Kenneth |
Director |
RSU Award |
1,771 |
- |
- |
10,696 |
| 2025-11-03 |
Lavange Lisa |
Director |
RSU Award |
1,771 |
- |
- |
10,834 |
| 2025-11-03 |
Evans Sharlene |
Director |
RSU Award |
1,771 |
- |
- |
13,280 |
| 2025-10-16 |
Oconnor Shawn |
Chief Executive Officer |
RSU Award |
50,000 |
$16.02 |
$801K |
50,000 |
| 2025-10-16 |
Frederick William W |
EVP/cfo |
RSU Award |
32,500 |
$16.02 |
$520.65K |
32,500 |
| 2025-10-16 |
Dibella John Anthony Ii |
Chief Revenue Officer |
RSU Award |
27,500 |
$16.02 |
$440.55K |
27,500 |
| 2025-10-16 |
Fiedler-kelly Jill |
President, Services Solutions |
RSU Award |
27,500 |
$16.02 |
$440.55K |
27,500 |
| 2025-10-01 |
Woltosz Walter S |
10 Percent Owner |
Informative Sell |
20,000 |
$15.39 |
$307.8K |
3,286,231 |
| 2025-09-02 |
Lavange Lisa |
Director |
Informative Sell |
867 |
$14.10 |
$12.22K |
9,063 |
| 2025-08-01 |
Weiner Daniel L |
Director |
RSU Award |
2,074 |
- |
- |
10,883 |
| 2025-08-01 |
Woltosz Walter S |
10 Percent Owner |
RSU Award |
2,074 |
- |
- |
3,306,231 |
| 2025-08-01 |
Paglia John Kenneth |
Director |
RSU Award |
2,074 |
- |
- |
8,925 |
| 2025-08-01 |
Lavange Lisa |
Director |
Informative Sell |
867 |
$12.93 |
$11.21K |
9,930 |
| 2025-08-01 |
Evans Sharlene |
Director |
RSU Award |
2,074 |
- |
- |
11,509 |
| 2025-07-01 |
Woltosz Walter S |
10 Percent Owner |
Informative Sell |
12,224 |
$18.58 |
$227.12K |
3,304,157 |
| 2025-06-02 |
Woltosz Walter S |
10 Percent Owner |
Informative Sell |
100 |
$31.36 |
$3.14K |
3,324,157 |
| 2025-05-01 |
Weiner Daniel L |
Director |
RSU Award |
786 |
- |
- |
8,809 |
| 2025-05-01 |
Woltosz Walter S |
10 Percent Owner |
Informative Sell |
10,604 |
$33.78 |
$358.2K |
3,344,157 |
| 2025-05-01 |
Paglia John Kenneth |
Director |
RSU Award |
786 |
- |
- |
6,851 |
| 2025-05-01 |
Lavange Lisa |
Director |
RSU Award |
786 |
- |
- |
8,723 |
| 2025-05-01 |
Evans Sharlene |
Director |
RSU Award |
786 |
- |
- |
9,435 |
| 2025-04-01 |
Woltosz Walter S |
10 Percent Owner |
Informative Sell |
2,600 |
$24.62 |
$64.01K |
3,363,371 |
| 2025-03-03 |
Woltosz Walter S |
10 Percent Owner |
Informative Sell |
20,000 |
$28.68 |
$573.6K |
3,383,371 |
| 2025-02-03 |
Weiner Daniel L |
Director |
RSU Award |
787 |
- |
- |
8,023 |
| 2025-02-03 |
Woltosz Walter S |
10 Percent Owner |
Informative Sell |
14,421 |
$34.06 |
$491.18K |
3,402,584 |
| 2025-02-03 |
Paglia John Kenneth |
Director |
RSU Award |
787 |
- |
- |
6,065 |
| 2025-02-03 |
Lavange Lisa |
Director |
RSU Award |
787 |
- |
- |
7,937 |
| 2025-02-03 |
Evans Sharlene |
Director |
RSU Award |
787 |
- |
- |
8,649 |
| 2025-01-02 |
Woltosz Walter S |
10 Percent Owner |
Informative Sell |
100 |
$28.50 |
$2.85K |
3,422,584 |
| 2024-12-27 |
Weiner Daniel L |
Director |
Informative Sell |
750 |
$28.50 |
$21.38K |
7,236 |
| 2024-12-02 |
Woltosz Walter S |
10 Percent Owner |
Informative Sell |
20,000 |
$31.76 |
$635.2K |
3,442,584 |
| 2024-12-02 |
Lavange Lisa |
Director |
Informative Sell |
650 |
$31.88 |
$20.72K |
7,150 |
| 2024-11-01 |
Weiner Daniel L |
Director |
RSU Award |
992 |
- |
- |
7,986 |
| 2024-11-01 |
Woltosz Walter S |
10 Percent Owner |
Informative Sell |
20,000 |
$27.66 |
$553.2K |
3,462,584 |
| 2024-11-01 |
Paglia John Kenneth |
Director |
RSU Award |
992 |
- |
- |
5,278 |
| 2024-11-01 |
Lavange Lisa |
Director |
RSU Award |
992 |
- |
- |
7,800 |
| 2024-11-01 |
Evans Sharlene |
Director |
RSU Award |
992 |
- |
- |
7,862 |
| 2024-10-17 |
Oconnor Shawn |
Chief Executive Officer |
RSU Award |
32,500 |
$33.29 |
$1.08M |
32,500 |
| 2024-10-17 |
Frederick William W |
CFO/coo |
RSU Award |
10,000 |
$33.29 |
$332.9K |
10,000 |
| 2024-10-17 |
Dibella John Anthony Ii |
Business Unit President |
RSU Award |
7,500 |
$33.29 |
$249.68K |
7,500 |
■ Informative Buy/Sell — open market transaction (most significant)
■ Uninformative Buy — award, option exercise, conversion
■ Uninformative Sell — tax withholding, award vest sale
■ Neutral — gift, trust, expiry
