InsiderTrades.com logo

SLP Insider Trading

Insider Ownership Percentage: 19.10%
Insider Buying (Last 12 Months): $0.00
Insider Selling (Last 12 Months): $13,370.00

Simulations Plus Insider Trading History Chart

This chart shows the insider buying and selling history at Simulations Plus by year and by quarter.

Skip ChartChart Data in Insider Trading History Table

Simulations Plus Share Price & Price History

Current Price: $15.37
Price Change: +0.30 (1.20%)
As of 05/22/2026 04:00 PM ET

This chart shows the closing price history over time for SLP up to the past year.

Skip Chart and Table DataPrice Data in Insider Trading History Table
Days: 30 | 90 | 365

Simulations Plus Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
4/15/2026John Anthony DiBella, IICROSell1,000$13.37$13,370.0089,140View SEC Filing Icon  
5/1/2025Walter S. WoltoszDirectorSell20,000$33.51$670,200.003,344,157View SEC Filing Icon  
2/3/2025Walter S. WoltoszDirectorSell20,000$33.91$678,200.003,402,584View SEC Filing Icon  
12/2/2024Walter S. WoltoszDirectorSell20,000$31.76$635,200.003,442,584View SEC Filing Icon  
11/1/2024Walter S. WoltoszDirectorSell20,000$27.66$553,200.003,462,584View SEC Filing Icon  
10/1/2024Walter S. WoltoszDirectorSell20,000$31.26$625,200.003,481,592View SEC Filing Icon  
9/27/2024Daniel L WeinerDirectorSell750$31.54$23,655.006,994View SEC Filing Icon  
9/3/2024Walter S. WoltoszDirectorSell20,000$35.18$703,600.003,501,592View SEC Filing Icon  
8/1/2024Walter S. WoltoszDirectorSell20,000$39.63$792,600.003,521,592View SEC Filing Icon  
7/1/2024Walter S. WoltoszDirectorSell20,000$46.71$934,200.003,540,857View SEC Filing Icon  
6/28/2024Daniel L WeinerDirectorSell750$49.32$36,990.007,009View SEC Filing Icon  
5/14/2024Lisa LaVangeDirectorSell500$50.00$25,000.007,373View SEC Filing Icon  
5/7/2024Daniel L WeinerDirectorSell3,250$48.31$157,007.508,759View SEC Filing Icon  
5/1/2024Walter S. WoltoszDirectorSell20,000$45.95$919,000.003,580,857View SEC Filing Icon  
4/1/2024Walter S. WoltoszDirectorSell20,000$39.94$798,800.003,600,195View SEC Filing Icon  
2/1/2024Walter S. WoltoszDirectorSell18,945$38.02$720,288.903,641,250View SEC Filing Icon  
1/4/2024John Kenneth PagliaDirectorSell1,000$43.74$43,740.002,097View SEC Filing Icon  
1/2/2024Walter S. WoltoszDirectorSell20,000$44.46$889,200.003,659,403View SEC Filing Icon  
12/22/2023John Anthony DiBella, IIInsiderSell5,411$45.16$244,360.7674,429View SEC Filing Icon  
12/4/2023Walter S. WoltoszDirectorSell21,802$38.67$843,083.343,771,453View SEC Filing Icon  
12/1/2023Walter S. WoltoszDirectorSell31,148$38.80$1,208,542.403,793,255View SEC Filing Icon  
11/8/2023John Kenneth PagliaDirectorSell1,000$35.25$35,250.003,097View SEC Filing Icon  
7/27/2023Lisa LaVangeDirectorSell992$49.29$48,895.685,616View SEC Filing Icon  
7/13/2023John Kenneth PagliaDirectorSell1,200$46.45$55,740.002,644View SEC Filing Icon  
6/28/2023Walter S. WoltoszDirectorSell16,246$43.07$699,715.223,840,212View SEC Filing Icon  
5/30/2023Walter S. WoltoszDirectorSell20,000$46.05$921,000.003,856,458View SEC Filing Icon  
See Full Table

SEC Filings (Institutional Ownership Changes) for Simulations Plus (NASDAQ:SLP)

78.08% of Simulations Plus stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

This chart shows the instiutional buying and selling at SLP by year and by quarter.

Skip Institutional Buying and Selling Chart and Table DataRead Chart Data in Institutional Trading History Table

Simulations Plus Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
5/19/2026Bank of America Corp DE188,417$2.23M0.0%+13.2%0.933%Search for SEC Filing on Google Icon
5/18/2026Royal Bank of Canada30,414$0.36M0.0%+19.4%0.151%Search for SEC Filing on Google Icon
5/16/2026Quantinno Capital Management LP112,259$1.33M0.0%+439.1%0.556%Search for SEC Filing on Google Icon
5/16/2026First Light Asset Management LLC2,632,823$31.12M2.8%+33.7%13.034%Search for SEC Filing on Google Icon
5/15/2026Rice Hall James & Associates LLC101,598$1.20M0.1%+44.8%0.503%Search for SEC Filing on Google Icon
5/14/2026Renaissance Technologies LLC181,500$2.15M0.0%+807.5%0.899%Search for SEC Filing on Google Icon
5/14/2026Public Employees Retirement System of Ohio47,435$0.56M0.0%+44.6%0.235%Search for SEC Filing on Google Icon
5/13/2026First Trust Advisors LP16,207$0.19M0.0%-13.8%0.080%Search for SEC Filing on Google Icon
5/8/2026PNC Financial Services Group Inc.4,485$53K0.0%+59.3%0.022%Search for SEC Filing on Google Icon
5/7/2026Dimensional Fund Advisors LP293,940$3.47M0.0%-15.6%1.455%Search for SEC Filing on Google Icon
5/5/2026Bank of New York Mellon Corp63,592$0.75M0.0%+1.3%0.315%Search for SEC Filing on Google Icon
5/1/2026Fifth Third Bancorp4,594$54K0.0%N/A0.023%Search for SEC Filing on Google Icon
5/1/2026Kornitzer Capital Management Inc. KS49,545$0.59M0.0%-3.3%0.245%Search for SEC Filing on Google Icon
4/30/2026Hsbc Holdings PLC26,494$0.31M0.0%N/A0.131%Search for SEC Filing on Google Icon
4/30/2026Azzad Asset Management Inc. ADV50,348$0.60M0.1%+80.1%0.249%Search for SEC Filing on Google Icon
4/25/2026SOL Capital Management CO13,960$0.17M0.1%N/A0.069%Search for SEC Filing on Google Icon
4/23/2026North Star Investment Management Corp.197,330$2.33M0.1%+17.4%0.977%Search for SEC Filing on Google Icon
4/22/2026Janney Montgomery Scott LLC11,014$0.13M0.0%N/A0.055%Search for SEC Filing on Google Icon
3/17/2026Rockefeller Capital Management L.P.557,866$10.17M0.0%-25.2%2.769%Search for SEC Filing on Google Icon
3/9/2026Corient Private Wealth LLC21,795$0.40M0.0%N/A0.108%Search for SEC Filing on Google Icon
3/3/2026Caitong International Asset Management Co. Ltd3,983$73K0.0%+343.0%0.020%Search for SEC Filing on Google Icon
2/19/2026Invesco Ltd.26,641$0.49M0.0%+34.7%0.132%Search for SEC Filing on Google Icon
2/19/2026Corient Private Wealth LLC21,795$0.40M0.0%N/A0.108%Search for SEC Filing on Google Icon
2/18/2026Susquehanna Portfolio Strategies LLC67,002$1.22M0.0%+43.7%0.333%Search for SEC Filing on Google Icon
2/18/2026Tudor Investment Corp ET AL116,685$2.13M0.0%-2.8%0.579%Search for SEC Filing on Google Icon
2/18/2026Millennium Management LLC147,490$2.69M0.0%-51.8%0.732%Search for SEC Filing on Google Icon
2/18/2026Janus Henderson Group PLC53,362$0.97M0.0%N/A0.265%Search for SEC Filing on Google Icon
2/18/2026Engineers Gate Manager LP17,851$0.33M0.0%-21.9%0.089%Search for SEC Filing on Google Icon
2/18/2026Balyasny Asset Management L.P.37,479$0.68M0.0%N/A0.186%Search for SEC Filing on Google Icon
2/18/2026Bridgeway Capital Management LLC23,500$0.43M0.0%N/A0.117%Search for SEC Filing on Google Icon
2/17/2026Schonfeld Strategic Advisors LLC33,009$0.60M0.0%+187.5%0.164%Search for SEC Filing on Google Icon
2/17/2026PDT Partners LLC95,792$1.75M0.1%+49.2%0.475%Search for SEC Filing on Google Icon
2/17/2026AQR Capital Management LLC101,979$1.86M0.0%+288.2%0.506%Search for SEC Filing on Google Icon
2/17/2026First Light Asset Management LLC1,968,917$35.89M2.7%+156.4%9.773%Search for SEC Filing on Google Icon
2/17/2026Price T Rowe Associates Inc. MD10,192$0.19M0.0%N/A0.051%Search for SEC Filing on Google Icon
2/17/2026ExodusPoint Capital Management LP14,902$0.27M0.0%-75.2%0.074%Search for SEC Filing on Google Icon
2/17/2026Royal Bank of Canada25,467$0.47M0.0%-65.9%0.126%Search for SEC Filing on Google Icon
2/17/2026Rice Hall James & Associates LLC70,185$1.28M0.1%+6.2%0.348%Search for SEC Filing on Google Icon
2/17/2026Meros Investment Management LP339,242$6.18M2.5%N/A1.684%Search for SEC Filing on Google Icon
2/16/2026Squarepoint Ops LLC223,084$4.07M0.0%+1.4%1.107%Search for SEC Filing on Google Icon
2/16/2026Verition Fund Management LLC21,095$0.39M0.0%-34.2%0.105%Search for SEC Filing on Google Icon
2/16/2026Kennedy Capital Management LLC398,902$7.27M0.2%+7.8%1.980%Search for SEC Filing on Google Icon
2/16/2026Barclays PLC26,631$0.49M0.0%+8.7%0.132%Search for SEC Filing on Google Icon
2/13/2026Marshall Wace LLP569,783$10.39M0.0%+127.5%2.828%Search for SEC Filing on Google Icon
2/13/2026Walleye Capital LLC44,302$0.81M0.0%-71.2%0.220%Search for SEC Filing on Google Icon
2/13/2026First Trust Advisors LP18,794$0.34M0.0%+70.0%0.093%Search for SEC Filing on Google Icon
2/13/2026Charles Schwab Investment Management Inc.150,986$2.75M0.0%+8.6%0.749%Search for SEC Filing on Google Icon
2/13/2026State Street Corp364,773$6.65M0.0%-8.5%1.810%Search for SEC Filing on Google Icon
2/13/2026Caitong International Asset Management Co. Ltd5,038$92K0.3%+460.4%0.025%Search for SEC Filing on Google Icon
2/12/2026Jane Street Group LLC169,053$3.08M0.0%-16.5%0.839%Search for SEC Filing on Google Icon
2/12/2026Brooklyn Investment Group18,475$0.34M0.0%-35.5%0.092%Search for SEC Filing on Google Icon
2/12/2026Renaissance Technologies LLC20,000$0.37M0.0%N/A0.099%Search for SEC Filing on Google Icon
2/12/2026Dimensional Fund Advisors LP348,234$6.35M0.0%-15.2%1.728%Search for SEC Filing on Google Icon
2/12/2026Federated Hermes Inc.10,000$0.18M0.0%-92.1%0.050%Search for SEC Filing on Google Icon
2/12/2026Campbell & CO Investment Adviser LLC10,585$0.19M0.0%N/A0.053%Search for SEC Filing on Google Icon
2/11/2026GWN Securities Inc.17,283$0.32M0.1%N/A0.086%Search for SEC Filing on Google Icon
2/11/2026Deutsche Bank AG15,825$0.29M0.0%+5.9%0.079%Search for SEC Filing on Google Icon
2/11/2026Fox Run Management L.L.C.17,414$0.32M0.0%N/A0.086%Search for SEC Filing on Google Icon
2/11/2026Cerity Partners LLC23,725$0.43M0.0%+36.0%0.118%Search for SEC Filing on Google Icon
2/11/2026LPL Financial LLC48,734$0.89M0.0%+79.4%0.242%Search for SEC Filing on Google Icon
2/11/2026Franklin Resources Inc.11,233$0.21M0.0%N/A0.056%Search for SEC Filing on Google Icon
2/10/2026Goldman Sachs Group Inc.427,865$7.80M0.0%+278.6%2.123%Search for SEC Filing on Google Icon
2/10/2026Natixis Advisors LLC23,707$0.43M0.0%+7.6%0.118%Search for SEC Filing on Google Icon
2/9/2026Geode Capital Management LLC399,811$7.29M0.0%+1.5%1.984%Search for SEC Filing on Google Icon
2/9/2026King Luther Capital Management Corp16,000$0.29M0.0%N/A0.079%Search for SEC Filing on Google Icon
2/9/2026Royce & Associates LP402,416$7.34M0.1%+15.4%1.997%Search for SEC Filing on Google Icon
2/9/2026Connors Investor Services Inc.15,570$0.28M0.0%-27.8%0.077%Search for SEC Filing on Google Icon
2/6/2026Nano Cap New Millennium Growth Fund L P97,000$1.77M1.5%N/A0.481%Search for SEC Filing on Google Icon
2/6/2026Prescott Group Capital Management L.L.C.100,885$1.84M0.2%+26.1%0.501%Search for SEC Filing on Google Icon
2/6/2026GSA Capital Partners LLP62,322$1.14M0.1%+167.9%0.309%Search for SEC Filing on Google Icon
2/5/2026Stephens Investment Management Group LLC513,728$9.37M0.1%+30.8%2.550%Search for SEC Filing on Google Icon
2/5/2026Stephens Inc. AR11,801$0.22M0.0%N/A0.059%Search for SEC Filing on Google Icon
2/4/2026First Eagle Investment Management LLC457,155$8.33M0.0%+1,898.1%2.269%Search for SEC Filing on Google Icon
2/4/2026Nicholas Company Inc.262,712$4.79M0.1%+42.9%1.304%Search for SEC Filing on Google Icon
1/27/2026Zurcher Kantonalbank Zurich Cantonalbank37,000$0.68M0.0%+32.1%0.184%Search for SEC Filing on Google Icon
1/27/2026Tributary Capital Management LLC520,855$9.50M0.9%-8.4%2.585%Search for SEC Filing on Google Icon
1/26/2026CWM LLC5,480$100K0.0%+160.2%0.027%Search for SEC Filing on Google Icon
1/14/2026Hennion & Walsh Asset Management Inc.35,432$0.65M0.0%+23.2%0.176%Search for SEC Filing on Google Icon
1/9/2026SG Americas Securities LLC9,323$0.17M0.0%N/A0.046%Search for SEC Filing on Google Icon
1/7/2026Green Alpha Advisors LLC14,125$0.26M0.2%N/A0.070%Search for SEC Filing on Google Icon
1/5/2026Kopion Asset Management LLC134,388$2.45M1.8%-27.5%0.667%Search for SEC Filing on Google Icon
1/1/2026JPMorgan Chase & Co.167,646$2.53M0.0%+154.7%0.832%Search for SEC Filing on Google Icon
1/1/2026Tudor Investment Corp ET AL120,101$1.81M0.0%N/A0.596%Search for SEC Filing on Google Icon
12/9/2025Tudor Investment Corp ET AL120,101$1.81M0.0%N/A0.596%Search for SEC Filing on Google Icon
11/25/2025Connors Investor Services Inc.21,570$0.33M0.0%+59.8%0.107%Search for SEC Filing on Google Icon
11/17/2025Connective Capital Management LLC25,240$0.38M0.3%N/A0.125%Search for SEC Filing on Google Icon
11/17/2025PharVision Advisers LLC10,313$0.16M0.1%N/A0.051%Search for SEC Filing on Google Icon
11/17/2025Verition Fund Management LLC32,073$0.48M0.0%N/A0.159%Search for SEC Filing on Google Icon
11/17/2025Quarry LP1,862$28K0.0%N/A0.009%Search for SEC Filing on Google Icon
11/17/2025Numerai GP LLC55,311$0.83M0.1%N/A0.275%Search for SEC Filing on Google Icon
11/17/2025Millennium Management LLC306,020$4.61M0.0%-44.8%1.520%Search for SEC Filing on Google Icon
11/17/2025First Light Asset Management LLC767,760$11.57M1.1%+115.0%3.815%Search for SEC Filing on Google Icon
11/17/2025Brevan Howard Capital Management LP34,643$0.52M0.0%N/A0.172%Search for SEC Filing on Google Icon
11/17/2025Crawford Investment Counsel Inc.37,990$0.57M0.0%-6.1%0.189%Search for SEC Filing on Google Icon
11/17/2025Bank of America Corp DE369,585$5.57M0.0%+76.7%1.836%Search for SEC Filing on Google Icon
11/17/2025Aquatic Capital Management LLC27,234$0.41M0.0%+698.4%0.135%Search for SEC Filing on Google Icon
11/17/2025Ameriprise Financial Inc.722,336$10.89M0.0%-17.5%3.589%Search for SEC Filing on Google Icon
11/14/2025Schonfeld Strategic Advisors LLC11,480$0.17M0.0%N/A0.057%Search for SEC Filing on Google Icon
11/14/2025Brooklyn Investment Group28,663$0.43M0.0%+8,801.6%0.142%Search for SEC Filing on Google Icon
11/14/2025Two Sigma Investments LP90,725$1.37M0.0%N/A0.451%Search for SEC Filing on Google Icon
Data available starting January 2016

See Full Table
Simulations Plus logo
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. The company operates through two segments, Software and Services. It offers GastroPlus, which simulates the absorption and drug interaction of compounds administered to humans and animals; and DDDPlus and MembranePlus simulation products. The company also provides products based on mechanistic and mathematical models, such as DILIsym, NAFLDsym, ILDsym, RENAsym, IPFsym, and MITOsym products. In addition, it offers Absorption, Distribution, Metabolism, Excretion, and Toxicity Predictor for chemistry-based computer program that takes molecular structures as inputs and predicts their properties; and MedChem Designer, as well as MonolixSuite products for modeling and simulation that allows for population analyses, rapid clinical trial data analyses, and regulatory submissions. Further, the company provides clinical-pharmacology-based consulting services, which includes population pharmacokinetic and pharmacodynamic modeling, exposure-response analyses, clinical trial simulations, data programming, and technical writing services in support of regulatory submissions; and early drug discovery services. Additionally, it offers creative and insightful consulting services to support its quantitative systems pharmacology/quantitative systems toxicology modelling. The company serves pharmaceutical, biotechnology, agrochemical, cosmetics, and food industry companies, as well as academic and regulatory agencies. Simulations Plus, Inc. was incorporated in 1996 and is headquartered in Lancaster, California.
Read More on Simulations Plus

Today's Range

Now: $15.37
Low: $15.13
High: $15.59

50 Day Range

MA: $13.52
Low: $11.36
High: $16.68

52 Week Range

Now: $15.37
Low: $11.09
High: $34.01

Volume

171,303 shs

Average Volume

369,113 shs

Market Capitalization

$310.47 million

P/E Ratio

N/A

Dividend Yield

N/A

Beta

1.28

Who are the company insiders with the largest holdings of Simulations Plus?

Simulations Plus' top insider shareholders include:
  1. Walter S Woltosz (Chairman)
  2. Virginia E Woltosz (Insider)
  3. Walter S Woltosz (CEO)
  4. Walter S Woltosz (Major Shareholder)
  5. Walter S Woltosz (Insider)
  6. Walter S Woltosz (Director)
  7. Walter S Woltosz (Director)
  8. Thaddeus Henry Grasela Jr (President)
  9. John Anthony Dibella II (CRO)
  10. John Anthony Dibella II (Insider)
Learn More about top insider investors at Simulations Plus.

Who are the major institutional investors of Simulations Plus?

Simulations Plus' top institutional investors include:
  1. First Light Asset Management LLC — 13.03%
  2. Dimensional Fund Advisors LP — 1.45%
  3. North Star Investment Management Corp. — 0.98%
  4. Bank of America Corp DE — 0.93%
  5. Renaissance Technologies LLC — 0.90%
  6. Quantinno Capital Management LP — 0.56%
Learn More about top institutional investors of Simulations Plus stock.

Which major investors are selling Simulations Plus stock?

In the previous quarter, SLP stock was sold by these institutional investors:
  1. Dimensional Fund Advisors LP
  2. First Trust Advisors LP
  3. Kornitzer Capital Management Inc. KS

Which major investors are buying Simulations Plus stock?

During the previous quarter, SLP stock was bought by institutional investors including:
  1. First Light Asset Management LLC
  2. Renaissance Technologies LLC
  3. Quantinno Capital Management LP
  4. Rice Hall James & Associates LLC
  5. North Star Investment Management Corp.
  6. Hsbc Holdings PLC
  7. Azzad Asset Management Inc. ADV
  8. Bank of America Corp DE

Simulations Plus Active Insiders

John Anthony Dibella II
John Anthony Dibella II
President, Physiologically Based Pharmacokinetics (PBPK), Cheminformatics
1 recent trades
Walter S Woltosz
Walter S Woltosz (Age 81)
Director
John Kenneth Paglia
John Kenneth Paglia
Director
Daniel L Weiner
Daniel L Weiner
Director
Lisa Lavange
Lisa Lavange
Director