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Simulations Plus, Inc.

SLP Net selling

CIK 0001023459 #3339 in the set updated 18 Sep 2026

Bought (120 mo)

$1.40M

out of their own pocket, the only kind of buying there is

Sold (120 mo)

$77.77M

$22.62M on a plan · $1.90M straight out of an exercise

Sold at will

$53.25M

176 of 262 sales

Net

−$76.37M

−$51.85M against sales at will

By person

14 insiders · 286 transactions

Insider

Role

Bought

Sold

Net

Holding

Worth

Change

WOLTOSZ WALTER S

Director

$1.40M (1)

$70.51M (172)

−$69.12M

8,124,458

$148.52M

−22.6%

DiBella John Anthony II

Chief Revenue Officer

—

$1.63M (10) scheduled

−$1.63M

85,140

$1.56M

+61.8%

Paglia John Kenneth

Director

—

$1.55M (8)

−$1.55M

14,589

$266.69K

—

Ralph David L.

Director

—

$1.04M (4)

−$1.04M

12,797

$233.93K

+240.6%

WEINER DANIEL L

Director

—

$811.47K (7)

−$811.47K

16,547

$302.48K

+1,007%

OCONNOR SHAWN

Chief Executive Officer

—

$669.89K (2)

−$669.89K

$0.00

—

Grasela Thaddeus Henry Jr

President

—

$430.72K (35)

−$430.72K

79,763

$1.46M

−81.4%

D ARGENIO DAVID Z

Former Director

—

$362.10K (8)

−$362.10K

33,608

$614.35K

−39.3%

LaVange Lisa

Director

—

$258.20K (10) scheduled

−$258.20K

9,968

$182.22K

+1,788%

WOLTOSZ VIRGINIA E

Secretary-Treasurer

—

$243.07K (1)

−$243.07K

5,703,416

$104.26M

−0.3%

Fiedler-Kelly Jill

President, Services Solutions

—

$167.64K (3) scheduled

−$167.64K

77,817

$1.42M

+17.7%

KNEISEL JOHN ROBERT

Former CFO

—

$90.84K (2)

−$90.84K

3,400

$62.15K

—

Evans Sharlene

Director

—

17,173

$313.92K

—

FREDERICK WILLIAM W

EVP/CFO

—

2,100

$38.39K

—

No percentages here. These insiders hold more than one class of share between them, and the share count on file covers one of them rather than all. Dividing the two would compare different things.

Individual transactions

Insider

Date

Role

Action

Price

Amount

WOLTOSZ WALTER S

26 Aug 2020

Director

Buy

24,000

$58.16

$1.40M

Showing 250 of 286 transactions. The figures above use every one of them.

What was left out

Form 4 filings counted 398

Amendments (4/A) skipped 7

Filings about a different issuer 0

Unreadable filings 0

Joint filings 119

Sales on a Rule 10b5-1 plan 77

Sales straight out of an exercise 9

Sales at will 176

Transactions with no price 33

Shares from compensation/vesting 1,211,742

Sales filed before the plan box existed 174

History held since 2 Sep 2016