Simulations Plus, Inc. SLP NASDAQ

NASDAQ Global Select • Healthcare • Medical - Healthcare Information Services • US • USD

SharesGrow Score

62/100

3/7 Pass

SharesGrow Intrinsic Value

Simulations Plus, Inc. (SLP) has 20 known insider and institutional holders on record. The largest holder is WOLTOSZ WALTER S with 3,280,683 shares. Other notable holders include BERAN MOMOKO A and Grasela Thaddeus Henry Jr.

Over the last 12 months, insiders have made 31 transactions in SLP stock — 21 buys (valued at $2.2M) and 7 sells (valued at $934.34K). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.

SLP Insider Ownership

Top Holder

WOLTOSZ WALTER S

3,280,683 shares

Buys (12 mo)

$2.2M value

Sells (12 mo)

$934.34K value

12-Month Transaction Activity

Buy 68%

Sell 23%

Top Insider Holders

#	Name	Role	Shares Owned	Last Filed	Relative Size
1	Woltosz Walter S	10 Percent Owner	3,280,683	2026-02-02	100%
2	Beran Momoko A	CFO	368,381	2012-02-21	11%
3	Grasela Thaddeus Henry Jr	President	79,763	2018-03-13	2%
4	Dahlen Jeffrey A	President of Words+ Subsidiary	71,000	2009-04-09	2%
5	Creeley Ronald F	Vice President, Marketing	61,595	2009-06-19	2%
6	Oconnor Shawn	Chief Executive Officer	50,000	2025-10-17	2%
7	Weiss Richard R	Director	34,812	2012-02-27	1%
8	D Argenio David Z	Officer	33,608	2017-05-26	1%
9	Frederick William W	EVP/cfo	32,500	2025-10-17	1%
10	Dibella John Anthony Ii	Chief Revenue Officer	27,500	2025-10-17	1%
11	Fiedler-kelly Jill	President, Services Solutions	27,500	2025-10-17	1%
12	Rosenberger Harold Wayne	Director	21,000	2014-09-02	1%
13	Evans Sharlene	Director	15,056	2026-02-02	0%
14	Howell Brett	Business Unit President	15,000	2023-10-23	0%
15	Weiner Daniel L	Director	14,430	2026-02-02	0%
16	Ralph David L.	Director	12,797	2021-11-03	0%
17	Paglia John Kenneth	Director	12,472	2026-02-02	0%
18	Lavange Lisa	Director	9,968	2025-12-02	0%
19	Szot Daniel	Chief Revenue Officer	7,500	2024-10-21	0%
20	Woltosz Virginia E	Director	5,000	2022-10-12	0%

Recent Transactions (last 12 months)

Date	Name	Role	Type	Shares	Price	Value
2026-02-06	Dibella John Anthony Ii	Chief Revenue Officer	Option Exercise (Sell)	10,300	$9.71	$100.01K
2026-01-30	Evans Sharlene	Director	RSU Award	1,776	-	-
2026-01-30	Paglia John Kenneth	Director	RSU Award	1,776	-	-
2026-01-30	Woltosz Walter S	10 Percent Owner	RSU Award	1,776	-	-
2026-01-30	Weiner Daniel L	Director	RSU Award	1,776	-	-
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	-	-
2025-12-01	Lavange Lisa	Director	Informative Sell	866	$16.91	$14.64K
2025-11-03	Evans Sharlene	Director	RSU Award	1,771	-	-
2025-11-03	Lavange Lisa	Director	RSU Award	1,771	-	-
2025-11-03	Paglia John Kenneth	Director	RSU Award	1,771	-	-
2025-11-03	Woltosz Walter S	10 Percent Owner	RSU Award	1,771	-	-
2025-11-03	Weiner Daniel L	Director	RSU Award	1,771	-	-
2025-10-16	Fiedler-kelly Jill	President, Services Solutions	RSU Award	27,500	$16.02	$440.55K
2025-10-16	Dibella John Anthony Ii	Chief Revenue Officer	RSU Award	27,500	$16.02	$440.55K
2025-10-16	Frederick William W	EVP/cfo	RSU Award	32,500	$16.02	$520.65K
2025-10-16	Oconnor Shawn	Chief Executive Officer	RSU Award	50,000	$16.02	$801K
2025-10-01	Woltosz Walter S	10 Percent Owner	Informative Sell	20,000	$15.39	$307.8K
2025-09-02	Lavange Lisa	Director	Informative Sell	867	$14.10	$12.22K
2025-08-01	Evans Sharlene	Director	RSU Award	2,074	-	-
2025-08-01	Lavange Lisa	Director	Informative Sell	867	$12.93	$11.21K
2025-08-01	Paglia John Kenneth	Director	RSU Award	2,074	-	-
2025-08-01	Woltosz Walter S	10 Percent Owner	RSU Award	2,074	-	-
2025-08-01	Weiner Daniel L	Director	RSU Award	2,074	-	-
2025-07-01	Woltosz Walter S	10 Percent Owner	Informative Sell	12,224	$18.58	$227.12K