Simulations Plus SLP Insider Ownership

NASDAQ SLP

$18.50 +0.00 (+0.00%)

At close: Oct 7, 2026 · 4:00 PM EDT

Insider Holdings by Owner

9.97K Shares

Insider Ownership Statistics

as of 30 Sep, 2026

Insider Ownership

16.94%

▼-0.261% pp QoQ

Shares Held by Insiders

3.43Mn

filed for Sep 2026

▼-1.51% QoQ

Shares Outstanding

20.22Mn

20,216,438 shares

Direct Holdings

3.43Mn

Indirect: 0

Net Shares Traded (QoQ)

-52.67K

net selling in Sep 2026

Insiders Holding Shares

with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold

Latest quarter —

Net over range —

Buying quarters —

Insider Ownership Summary

Updated Oct 10, 2026

Over the trailing 12 months, SLP insiders sold $829,193 worth of shares (49.44K shares) in open-market trades, with no open-market purchases.

Counted by insider, open-market selling of SLP stock in the past 12 months came from 4 insiders, with no insider buying.
Walter S. Woltosz (Director and 10% owner) led open-market sales of Simulations Plus stock over the past 12 months with $565,424 (34.18K shares), most recently on July 1, 2026.
John Anthony Dibella II (Chief Revenue Officer) made the most recent open-market trade by an insider of Simulations Plus, a sale of 1K shares for $18,280 on August 3, 2026.
Beyond open-market trades, insiders at Simulations Plus received 5.66K shares in stock awards, acquired 28.65K shares through option exercises and conversions and gave away 9.1K shares as gifts in the last 12 months.
Business Quant data puts insider holdings in SLP at 9.97K shares across insiders' latest Form 4 filings, down 99.71% from 3.48Mn shares at the end of Q2 2026 and down 99.71% from 3.5Mn shares at the end of Q3 2025.
Simulations Plus insiders report no indirect holdings: all 9.97K shares are held directly.
Simulations Plus' largest insider shareholder, based on the latest Form 4 filings, is Lisa Lavange (Director, 9.97K shares).
Institutional investors held 78.53% of Simulations Plus stock at the end of Q2 2026, while the latest Form 4 filings of its insiders account for about 0.05%; other investors, including the public, hold roughly 21.42%.
In the last 12 months, 40 Form 4 filings with transactions in SLP stock came from 9 insiders.
This summary of Simulations Plus insider activity covers Form 4 filings through October 6, 2026.

Form 4 Holdings

Insiders Holding SLP

Insiders 1

Shares held 9.97K

Of outstanding 0.049%

#	Insider	Position	Direct	Indirect	Total	Share of Insiders	Last Filed
1	Lisa Lavange	Director	9,968	0	9,968	100.0%	02 Dec, 2025

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

853 Insider Transactions

Source SEC Form 4

Latest quarter Sep 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Ownership
06 Oct, 2026	Jill Fiedler-Kelly	President, Services Solutions	Disposed D	77,817	$18.50	$1.44Mn	Direct
06 Oct, 2026	Sharlene Evans	Director	Disposed D	17,173	$18.50	$317.70K	Direct
06 Oct, 2026	John Anthony Ii Dibella	Chief Revenue Officer	Disposed D	85,140	$18.50	$1.58Mn	Direct
06 Oct, 2026	William W Frederick	Evp/Cfo	Disposed D	2,100	$18.50	$38.85K	Direct
06 Oct, 2026	Daniel L Weiner	Director	Disposed D	16,547	$18.50	$306.12K	Direct
06 Oct, 2026	Shawn Oconnor	Chief Executive Officer	Disposed D	50,000	—	—	Direct
06 Oct, 2026	Walter S Woltosz	Director, TenPercentOwner	Disposed D	3,202,131	$18.50	$59.24Mn	Direct
06 Oct, 2026	John Kenneth Paglia	Director	Disposed D	14,589	$18.50	$269.90K	Direct
06 Oct, 2026	Jill Fiedler-Kelly	President, Services Solutions	Disposed D	27,500	—	—	Direct
06 Oct, 2026	John Kenneth Paglia	Director	Disposed D	6,000	—	—	Direct
06 Oct, 2026	Shawn Oconnor	Chief Executive Officer	Disposed D	20,000	—	—	Direct
06 Oct, 2026	Daniel L Weiner	Director	Disposed D	2,000	—	—	Direct
06 Oct, 2026	William W Frederick	Evp/Cfo	Disposed D	32,500	—	—	Direct
06 Oct, 2026	John Anthony Ii Dibella	Chief Revenue Officer	Disposed D	27,500	—	—	Direct
06 Oct, 2026	Walter S Woltosz	Director, TenPercentOwner	Disposed D	5,000	—	—	Direct
06 Oct, 2026	Jill Fiedler-Kelly	President, Services Solutions	Disposed D	15,000	—	—	Direct
06 Oct, 2026	John Anthony Ii Dibella	Chief Revenue Officer	Disposed D	26,206	—	—	Direct
06 Oct, 2026	John Kenneth Paglia	Director	Disposed D	5,000	—	—	Direct
06 Oct, 2026	Shawn Oconnor	Chief Executive Officer	Disposed D	20,000	—	—	Direct
06 Oct, 2026	Daniel L Weiner	Director	Disposed D	5,000	—	—	Direct

Showing 1 to 20 of 853 transactions