Simulations Plus, Inc. (SLP)

Latest Insider Confidence Score

2026Q1

49.6
Bearish

Company insider confidence (by quarter)

2004Q4 2026Q1

Largest shareholders

Insider Role (last 12 mo) Shares held Filed at
Woltosz Walter S Director 3,288,002 Nov 4, 2025
Woltosz Virginia E 10% Owner 3,288,002 Nov 4, 2025
Grasela Thaddeus Henry Jr President 79,763 Mar 13, 2018
Oconnor Shawn CEO 50,000 Oct 17, 2025
Weiss Richard R 34,812 Feb 27, 2012

Recent buy/sell transactions

Exec date Filing date Insider Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Feb 6, 2026 Feb 9, 2026 DiBella John Anthony II Chief Revenue Officer Neutral 52.5 - 0.00% -
Jan 30, 2026 Feb 2, 2026 WOLTOSZ WALTER S Director Neutral 55.0 +1,776 0.05% -
Jan 30, 2026 Feb 2, 2026 Evans Sharlene Director Neutral 90.0 +1,776 13.37% -
Jan 30, 2026 Feb 2, 2026 WEINER DANIEL L Director Neutral 90.0 +1,776 14.04% -
Jan 30, 2026 Feb 2, 2026 Paglia John Kenneth Director Neutral 90.0 +1,776 16.60% -
Jan 28, 2026 Jan 29, 2026 Fiedler-Kelly Jill President Neutral 52.5 - 0.00% -
Dec 18, 2025 Dec 22, 2025 WOLTOSZ WALTER S Director Neutral 45.0 -9,095 -0.28% -
Dec 1, 2025 Dec 2, 2025 LaVange Lisa Director Sell 32.5 -866 -7.99% $14.6K
Nov 3, 2025 Nov 4, 2025 LaVange Lisa Director Neutral 90.0 +1,771 19.54% -
Nov 3, 2025 Nov 4, 2025 WOLTOSZ WALTER S Director Neutral 55.0 +1,771 0.05% -
Nov 3, 2025 Nov 4, 2025 WEINER DANIEL L Director Neutral 90.0 +1,771 16.27% -
Nov 3, 2025 Nov 4, 2025 Paglia John Kenneth Director Neutral 90.0 +1,771 19.84% -
Nov 3, 2025 Nov 4, 2025 Evans Sharlene Director Neutral 90.0 +1,771 15.39% -
Oct 16, 2025 Oct 17, 2025 OCONNOR SHAWN CEO Neutral 52.5 - 0.00% -
Oct 16, 2025 Oct 17, 2025 FREDERICK WILLIAM W CFO Neutral 52.5 - 0.00% -
Oct 16, 2025 Oct 17, 2025 Fiedler-Kelly Jill President Neutral 52.5 - 0.00% -
Oct 16, 2025 Oct 17, 2025 DiBella John Anthony II Chief Revenue Officer Neutral 52.5 - 0.00% -
Oct 1, 2025 Oct 3, 2025 WOLTOSZ WALTER S Director Sell 45.0 -20,000 -0.60% $307.8K
Sep 2, 2025 Sep 4, 2025 LaVange Lisa Director Sell 32.5 -867 -8.73% $12.2K
Aug 1, 2025 Aug 4, 2025 WOLTOSZ WALTER S Director Neutral 55.0 +2,074 0.06% -
Aug 1, 2025 Aug 4, 2025 WEINER DANIEL L Director Neutral 90.0 +2,074 23.54% -
Aug 1, 2025 Aug 4, 2025 Paglia John Kenneth Director Neutral 90.0 +2,074 30.27% -
Aug 1, 2025 Aug 4, 2025 Evans Sharlene Director Neutral 90.0 +2,074 21.98% -
Aug 1, 2025 Aug 4, 2025 LaVange Lisa Director Sell 91.3 +1,207 13.84% $11.2K
Jul 1, 2025 Jul 2, 2025 WOLTOSZ WALTER S Director Sell 45.0 -20,000 -0.60% $366.6K
Jun 2, 2025 Jun 3, 2025 WOLTOSZ WALTER S Director Sell 45.0 -20,000 -0.60% $543.1K
May 1, 2025 May 1, 2025 WOLTOSZ WALTER S Director Sell 45.0 -19,214 -0.57% $670.2K
May 1, 2025 May 1, 2025 Evans Sharlene Director Neutral 85.0 +786 9.09% -
May 1, 2025 May 1, 2025 LaVange Lisa Director Neutral 85.0 +786 9.90% -
May 1, 2025 May 1, 2025 WEINER DANIEL L Director Neutral 85.0 +786 9.80% -
May 1, 2025 May 1, 2025 Paglia John Kenneth Director Neutral 90.0 +786 12.96% -
Apr 1, 2025 Apr 2, 2025 WOLTOSZ WALTER S Director Sell 45.0 -20,000 -0.59% $481.8K
Mar 3, 2025 Mar 4, 2025 WOLTOSZ WALTER S Director Sell 45.0 -20,000 -0.59% $573.6K
Feb 3, 2025 Feb 4, 2025 Paglia John Kenneth Director Neutral 90.0 +787 14.91% -
Feb 3, 2025 Feb 4, 2025 WEINER DANIEL L Director Neutral 90.0 +787 10.88% -
Feb 3, 2025 Feb 4, 2025 Evans Sharlene Director Neutral 90.0 +787 10.01% -
Feb 3, 2025 Feb 4, 2025 LaVange Lisa Director Neutral 90.0 +787 11.01% -
Feb 3, 2025 Feb 4, 2025 WOLTOSZ WALTER S Director Sell 45.0 -19,213 -0.56% $678.2K
Jan 2, 2025 Jan 3, 2025 WOLTOSZ WALTER S Director Sell 45.0 -20,000 -0.58% $557.7K
Dec 27, 2024 Dec 30, 2024 WEINER DANIEL L Director Sell 32.5 -750 -9.39% $21.4K
Dec 2, 2024 Dec 3, 2024 WOLTOSZ WALTER S Director Sell 45.0 -20,000 -0.58% $635.2K
Dec 2, 2024 Dec 3, 2024 LaVange Lisa Director Sell 32.5 -650 -8.33% $20.7K
Nov 1, 2024 Nov 5, 2024 Paglia John Kenneth Director Neutral 90.0 +992 23.15% -
Nov 1, 2024 Nov 5, 2024 WEINER DANIEL L Director Neutral 90.0 +992 14.18% -
Nov 1, 2024 Nov 5, 2024 LaVange Lisa Director Neutral 90.0 +992 14.57% -
Nov 1, 2024 Nov 5, 2024 Evans Sharlene Director Neutral 90.0 +992 14.44% -
Nov 1, 2024 Nov 5, 2024 WOLTOSZ WALTER S Director Sell 45.0 -19,008 -0.55% $553.2K
Oct 17, 2024 Oct 21, 2024 OCONNOR SHAWN CEO Neutral 52.5 - 0.00% -
Oct 17, 2024 Oct 21, 2024 FREDERICK WILLIAM W CFO Neutral 52.5 - 0.00% -
Oct 17, 2024 Oct 21, 2024 Fiedler-Kelly Jill President Neutral 52.5 - 0.00% -
Oct 17, 2024 Oct 21, 2024 Szot Daniel Chief Revenue Officer Neutral 52.5 - 0.00% -
Oct 17, 2024 Oct 21, 2024 DiBella John Anthony II President Neutral 52.5 - 0.00% -
Oct 1, 2024 Oct 2, 2024 WOLTOSZ WALTER S Director Sell 45.0 -20,000 -0.57% $625.2K
Sep 27, 2024 Oct 1, 2024 WEINER DANIEL L Director Sell 32.5 -750 -9.68% $23.7K
Sep 9, 2024 Sep 10, 2024 Fiedler-Kelly Jill President Neutral 52.5 - 0.00% -
Sep 3, 2024 Sep 4, 2024 WOLTOSZ WALTER S Director Sell 45.0 -20,000 -0.57% $703.7K
Sep 3, 2024 Sep 4, 2024 LaVange Lisa Director Sell 32.5 -650 -8.72% $23.4K
Aug 1, 2024 Aug 2, 2024 Paglia John Kenneth Director Neutral 90.0 +735 20.70% -
Aug 1, 2024 Aug 2, 2024 WEINER DANIEL L Director Neutral 90.0 +735 10.49% -
Aug 1, 2024 Aug 2, 2024 LaVange Lisa Director Neutral 90.0 +735 10.93% -
Aug 1, 2024 Aug 2, 2024 Evans Sharlene Director Neutral 90.0 +735 11.98% -
Aug 1, 2024 Aug 2, 2024 WOLTOSZ WALTER S Director Sell 45.0 -19,265 -0.54% $792.5K
Jul 1, 2024 Jul 2, 2024 WOLTOSZ WALTER S Director Sell 45.0 -20,000 -0.56% $934.2K
Jun 28, 2024 Jul 1, 2024 WEINER DANIEL L Director Sell 32.5 -750 -9.67% $37K
Jun 21, 2024 RAYMER MICHAEL E President Neutral 52.5 - 0.00% -
Jun 3, 2024 Jun 4, 2024 WOLTOSZ WALTER S Director Sell 45.0 -20,000 -0.56% $925K
Jun 3, 2024 Jun 4, 2024 LaVange Lisa Director Sell 32.5 -650 -8.82% $31.4K
May 14, 2024 May 15, 2024 LaVange Lisa Director Sell 36.3 -500 -6.35% $25K
May 14, 2024 May 15, 2024 WEINER DANIEL L Director Sell 10.0 -3,000 -27.88% $150.4K
May 7, 2024 May 8, 2024 WEINER DANIEL L Director Sell 10.0 -3,250 -27.06% $157K
May 7, 2024 May 8, 2024 LaVange Lisa Director Sell 32.5 -650 -7.63% $31.4K
May 1, 2024 May 2, 2024 WOLTOSZ WALTER S Director Sell 45.0 -19,338 -0.54% $919K
May 1, 2024 May 2, 2024 Evans Sharlene Director Neutral 90.0 +662 12.10% -
May 1, 2024 May 2, 2024 WEINER DANIEL L Director Neutral 85.0 +662 7.08% -
May 1, 2024 May 2, 2024 LaVange Lisa Director Neutral 85.0 +662 8.42% -
May 1, 2024 May 2, 2024 Paglia John Kenneth Director Neutral 90.0 +662 22.91% -
Apr 1, 2024 Apr 2, 2024 WOLTOSZ WALTER S Director Sell 45.0 -20,000 -0.55% $798.9K
Mar 28, 2024 Mar 29, 2024 Szot Daniel Chief Revenue Officer Neutral 52.5 - 0.00% -
Mar 1, 2024 Mar 5, 2024 WOLTOSZ WALTER S Director Sell 45.0 -20,000 -0.55% $828.2K
Feb 1, 2024 Feb 5, 2024 WOLTOSZ WALTER S Director Sell 45.0 -20,000 -0.55% $759.9K
Feb 1, 2024 Feb 2, 2024 Paglia John Kenneth Director Neutral 90.0 +792 37.77% -
Feb 1, 2024 Feb 2, 2024 WEINER DANIEL L Director Neutral 85.0 +792 9.26% -
Feb 1, 2024 Feb 2, 2024 WOLTOSZ WALTER S Director Neutral 47.5 +792 0.02% -
Feb 1, 2024 Feb 2, 2024 LaVange Lisa Director Neutral 90.0 +792 11.20% -
Feb 1, 2024 Feb 2, 2024 Evans Sharlene Director Neutral 90.0 +792 16.92% -
Jan 12, 2024 Szot Daniel Chief Revenue Officer Neutral 52.5 - 0.00% -
Jan 4, 2024 Jan 4, 2024 Paglia John Kenneth Director Sell 13.8 -1,000 -32.29% $43.7K
Jan 2, 2024 Jan 4, 2024 WOLTOSZ WALTER S Director Sell 45.0 -20,000 -0.54% $889.2K
Dec 22, 2023 Dec 26, 2023 DiBella John Anthony II President Sell 32.5 -5,411 -6.35% $244.4K
Dec 22, 2023 Dec 26, 2023 DiBella John Anthony II President Sell 32.5 -5,411 -6.78% $244.4K
Dec 14, 2023 Dec 15, 2023 WOLTOSZ WALTER S Director Neutral 27.5 -85,000 -2.26% -
Dec 1, 2023 Dec 5, 2023 WOLTOSZ WALTER S Director Sell 40.0 -60,000 -1.57% $2.3M
Nov 8, 2023 Nov 9, 2023 Paglia John Kenneth Director Sell 26.3 -1,000 -24.41% $35.3K
Nov 1, 2023 Nov 3, 2023 WOLTOSZ WALTER S Director Sell 40.0 -60,000 -1.56% $2.1M
Nov 1, 2023 Nov 1, 2023 Paglia John Kenneth Director Neutral 90.0 +851 26.22% -
Nov 1, 2023 Nov 1, 2023 WEINER DANIEL L Director Neutral 90.0 +851 11.05% -
Nov 1, 2023 Nov 1, 2023 WOLTOSZ WALTER S Director Neutral 47.5 +851 0.02% -
Nov 1, 2023 Nov 1, 2023 LaVange Lisa Director Neutral 90.0 +851 13.69% -
Nov 1, 2023 Nov 1, 2023 Evans Sharlene Director Neutral 90.0 +851 22.22% -
Oct 24, 2023 Oct 27, 2023 FREDERICK WILLIAM W CFO Neutral 52.5 - 0.00% -