Simulations Plus Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be negative at -85.93. In total, the insiders bought 238.9K and sold 367.93K SLP shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.

Insider Power

(Last 100 transactions)
-85.93
Buy 238.9K shares
Sell 367.93K shares
53% Buy Activity
Weak Positive Correlation
Sell Signal Medium Confidence
Jun 01, 2026

Analysis Breakdown:

  • Strongly supported by a very low Insider Power Score of -85.93.
  • Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date Type Person Role Amount
Jun 01, 2026
Sell
Common Stock
S-Sale
Woltosz Walter S
Director 15 000
Value: $261.5K
May 11, 2026
Buy
Employee Stock Option (Right to Buy)
M-Exempt
Fiedler-kelly Jill
President, Services Solutions
CEO / President 1 000
Value: $10.1K
May 11, 2026
Sell
Common Stock
S-Sale
Fiedler-kelly Jill
President, Services Solutions
CEO / President 1 000
Value: $16.5K
May 11, 2026
Buy
Common Stock
M-Exempt
Fiedler-kelly Jill
President, Services Solutions
CEO / President 1 000
Value: $10.1K
May 04, 2026
Sell
Common Stock
S-Sale
Dibella John Anthony Ii
Chief Revenue Officer
Officer 1 000
Value: $15.0K
May 04, 2026
Sell
Common Stock
S-Sale
Woltosz Walter S
Director 15 000
Value: $227.0K
May 01, 2026
Buy
Common Stock
A-Award
Evans Sharlene
Director
Director 2 117
Value: $31.6K
May 01, 2026
Buy
Common Stock
A-Award
Woltosz Walter S
Director 2 117
Value: $31.6K
May 01, 2026
Buy
Common Stock
A-Award
Weiner Daniel L
Director
Director 2 117
Value: $31.6K
May 01, 2026
Buy
Common Stock
A-Award
Paglia John Kenneth
Director
Director 2 117
Value: $31.6K
Apr 15, 2026
Sell
Common Stock
S-Sale
Dibella John Anthony Ii
Chief Revenue Officer
Officer 1 000
Value: $13.4K
Feb 06, 2026
Buy
Stock Options (Right to Buy)
M-Exempt
Dibella John Anthony Ii
Chief Revenue Officer
Officer 10 300
Value: $100.0K
Feb 06, 2026
Buy
Common Stock
M-Exempt
Dibella John Anthony Ii
Chief Revenue Officer
Officer 10 300
Value: $100.0K
Jan 30, 2026
Buy
Common Stock
A-Award
Paglia John Kenneth
Director
Director 1 776
Value: $30.0K
Jan 30, 2026
Buy
Common Stock
A-Award
Weiner Daniel L
Director
Director 1 776
Value: $30.0K
Jan 30, 2026
Buy
Common Stock
A-Award
Woltosz Walter S
Director 1 776
Value: $30.0K
Jan 30, 2026
Buy
Common Stock
A-Award
Evans Sharlene
Director
Director 1 776
Value: $30.0K
Jan 28, 2026
Buy
Common Stock
M-Exempt
Fiedler-kelly Jill
President, Services Solutions
CEO / President 8 950
Value: $86.9K
Jan 28, 2026
Buy
Employee Stock Option (Right to Buy)
M-Exempt
Fiedler-kelly Jill
President, Services Solutions
CEO / President 8 950
Value: $86.9K
Dec 18, 2025
Sell
Common Stock
G-Gift
Woltosz Walter S
Director 9 095
Value: $0
Dec 01, 2025
Sell
Common Stock
S-Sale
Lavange Lisa
Director
Director 866
Value: $14.6K
Nov 03, 2025
Buy
Common Stock
A-Award
Evans Sharlene
Director
Director 1 771
Value: $30.0K
Nov 03, 2025
Buy
Common Stock
A-Award
Paglia John Kenneth
Director
Director 1 771
Value: $30.0K
Nov 03, 2025
Buy
Common Stock
A-Award
Weiner Daniel L
Director
Director 1 771
Value: $30.0K
Nov 03, 2025
Buy
Common Stock
A-Award
Woltosz Walter S
Director 1 771
Value: $30.0K

About Insider Power

Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.

It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.

While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.

* October 6th, 2025 - Tested on 5562 stocks

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ABOUT SIMULATIONS PLUS
Simulations Plus
Simulations Plus, Inc. develops drug discovery and development software for modeling and simulation, and prediction of molecular properties utilizing artificial intelligence and machine learning based technology worldwide. It operates through four segments: Simulations Plus, Cognigen, DILIsym, and Lixoft. The company offers GastroPlus, which simulates the absorption and drug interaction of compounds administered to humans and animals; and DDDPlus...
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