Simulations Plus (SLP) CRO sells 1,000 shares via Rule 10b5-1 plan

Rhea-AI Filing Summary

Simulations Plus, Inc. Chief Revenue Officer John Anthony DiBella II reported an open-market sale of 1,000 shares of common stock at $13.37 per share on April 15, 2026. The transaction was executed automatically under a pre-arranged Rule 10b5-1 trading plan, and he now holds 89,140 shares directly.

Insider Trade Summary 10b5-1

Net Seller: 1,000 shares ($13,370)

Net Sell 1 txn

Insider DiBella John Anthony II

Role Chief Revenue Officer

Sold 1,000 shs ($13K)

Type	Security	Shares	Price	Value
Sale	Common Stock	1,000	$13.37	$13K

Holdings After Transaction: Common Stock — 89,140 shares (Direct)

Footnotes (1)

1. The sales reported in this Form 4 were effected automatically pursuant to a Rule 10b5-1 plan adopted by the reporting person. There shares were sold in a single transaction at $13.37.

Key Figures

Shares sold: 1,000 shares Sale price: $13.37 per share Shares held after transaction: 89,140 shares

3 metrics

Shares sold 1,000 shares Open-market sale on April 15, 2026

Sale price $13.37 per share Price for the 1,000-share transaction

Shares held after transaction 89,140 shares Direct ownership after reported sale

Key Terms

Rule 10b5-1 plan, Form 4, open market, Common Stock

4 terms

Rule 10b5-1 plan regulatory

"The sales reported in this Form 4 were effected automatically pursuant to a Rule 10b5-1 plan adopted by the reporting person."

A Rule 10b5-1 plan is a prearranged, written schedule that lets corporate insiders buy or sell company stock at set times or amounts, even if they later learn material nonpublic information. Think of it like setting an automatic thermostat for trades: it creates a clear record that trades were planned in advance, reducing the risk of insider-trading accusations and helping investors trust that insider transactions are routine rather than based on secret information.

Form 4 regulatory

"The sales reported in this Form 4 were effected automatically pursuant to a Rule 10b5-1 plan adopted by the reporting person."

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

open market financial

"There shares were sold in a single transaction at $13.37."

An open market is a system where buying and selling of goods, services, or financial assets happen freely without restrictions or special controls. For investors, it means they can trade assets easily and quickly, which helps determine fair prices based on supply and demand. This environment encourages transparency and competition, making it easier to buy or sell with confidence.

Common Stock financial

"security_title: Common Stock"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

DiBella John Anthony II

(Last) (First) (Middle)

800 PARK OFFICES DRIVE

SUITE 401

(Street)

RESEARCH TRIANGLE PARK NORTH CAROLINA 27709

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Simulations Plus, Inc. [ SLP ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Revenue Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/15/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	04/15/2026		S(1)		1,000	D	$13.37(2)	89,140	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The sales reported in this Form 4 were effected automatically pursuant to a Rule 10b5-1 plan adopted by the reporting person.

2. There shares were sold in a single transaction at $13.37.

Remarks:

	/s/ William Frederick, attorney-in-fact for John Anthony DiBella	04/16/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did Simulations Plus (SLP) report on this Form 4?

Simulations Plus reported that Chief Revenue Officer John Anthony DiBella II sold 1,000 shares of common stock at $13.37 per share. The sale was an open-market transaction and was executed automatically under a pre-arranged Rule 10b5-1 trading plan.

Who at Simulations Plus (SLP) sold shares and what is their role?

Chief Revenue Officer John Anthony DiBella II sold the shares reported on this Form 4. He serves as the company’s Chief Revenue Officer and remains a significant holder of Simulations Plus common stock following this transaction.

How many Simulations Plus (SLP) shares were sold and at what price?

The filing shows a sale of 1,000 shares of Simulations Plus common stock at a price of $13.37 per share. This single open-market trade reflects the only reported transaction in this Form 4 for the stated date.

How many Simulations Plus (SLP) shares does the insider hold after the sale?

After selling 1,000 shares, John Anthony DiBella II directly owns 89,140 shares of Simulations Plus common stock. This post-transaction holding is disclosed in the Form 4 as the total number of shares he holds following the reported trade.

Was the Simulations Plus (SLP) insider sale made under a Rule 10b5-1 plan?

Yes. A footnote explains that the sale reported in this Form 4 was executed automatically under a Rule 10b5-1 trading plan adopted by the reporting person. Such plans pre-schedule trades, reducing the significance of short-term market timing.

What type of transaction is reported for Simulations Plus (SLP) in this Form 4?

The Form 4 reports a non-derivative open-market sale of common stock. The transaction code is “S,” which indicates a sale in the open market or a private transaction, with no derivative securities or option exercises included in this filing.