Simulations Plus, Inc.
A maker of computer software that lets pharmaceutical companies test drugs "on screen" before they ever reach a lab or a patient. Its tools—like GastroPlus, ADMET Predictor, and DILIsym—predict how a compound moves through the body and whether it might harm the liver, and its services help with modeling and clinical trial training. Founder Walt Woltosz started the company in 1996 after bringing aerospace-style simulation ideas into drug development. Its name simply joins "simulations" with a "plus," a nod to the extra technology baked in.
Granted 18.1K · Sold 4.36M
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Granted 51.9K · Bought 9.0K · Sold 31.3K
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| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Woltosz Virginia ESecretary-Treasurer, Director, 10% owner · 35 transactions | — | 6.12Mas of Sep 2013 | 18.1K | — | 4.36M |
| Woltosz Walter SDirector, 10% owner · 23 transactions | — | 3.28M | 140.7K | — | 138.3K |
| Woltosz Virginia E +1 co-filer10% owner, Director, 10% owner · 214 transactions | — | 3.25M | 95.3K | — | 1.86M |
| Beran Momoko ACFO · 53 transactions | — | 363.4Kas of Feb 2012 | 483.4K | — | 135.2K |
| Dahlen Jeffrey APresident of Words+ subsidiary · 4 transactions | — | 195.0Kas of Feb 2008 | 195.0K | — | — |
| DiBella John Anthony IIChief Revenue Officer · 16 transactions | — | 87.1K | 84.5K | — | 39.6K |
| Grasela Thaddeus Henry JrPresident, Director · 36 transactions | — | 79.8Kas of Mar 2018 | — | — | 350.0K |
| Fiedler-Kelly JillPresident, Services Solutions · 9 transactions | — | 77.8K | 21.1K | — | 9.4K |
| Creeley Ronald FVice President, Marketing · 13 transactions | — | 61.6Kas of Jun 2009 | 24.0K | — | 37.4K |
| Weiss Richard RDirector · 5 transactions | — | 34.8Kas of Feb 2012 | 33.2K | — | — |
| D Argenio David ZFormer Director · 23 transactions | — | 33.6Kas of May 2017 | 51.9K | 9.0K | 31.3K |
| Evans SharleneDirector · 18 transactions | — | 17.2K | 17.2K | — | — |
| Weiner Daniel LDirector · 49 transactions | — | 16.5K | 34.4K | — | 16.1K |
| Paglia John KennethDirector · 52 transactions | — | 14.6K | 42.5K | — | 24.6K |
| Ralph David L.Director · 25 transactions | — | 12.8Kas of Nov 2021 | 29.8K | — | 16.8K |
| LaVange LisaDirector · 36 transactions | — | 10.0K | 16.6K | — | 7.2K |
| Kneisel John RobertCFO · 4 transactions | — | 3.4Kas of Apr 2020 | 7.4K | — | 4.0K |
| Rosenberger Harold WayneDirector · 1 transaction | — | 3.0Kas of Sep 2013 | 3.0K | — | — |
| Frederick William WCFO · 2 transactions | — | 2.1Kas of Oct 2023 | 2.1K | — | — |
| Oconnor ShawnChief Executive Officer · 3 transactions | — | 0as of Nov 2020 | 20.0K | — | 11.9K |
Select a row to see that insider’s individual transactions.
Net open-market activity over all recorded history: -7.03M shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.