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

Rhea-AI Filing Summary

Simulations Plus, Inc. Chief Revenue Officer John Anthony DiBella II reported an open-market sale of company stock. He sold 1,000 shares of common stock at $16.50 per share in a single transaction.

The trade was executed automatically under a pre-arranged Rule 10b5-1 trading plan adopted by the reporting person, indicating it was scheduled in advance rather than timed discretionarily. After the sale, he directly holds 87,140 shares of Simulations Plus common stock, so the transaction represents only a small fraction of his reported direct holdings.

Insider Trade Summary 10b5-1

Net Seller: 1,000 shares ($16,500)

Net Sell 1 txn

Insider DiBella John Anthony II

Role Chief Revenue Officer

Sold 1,000 shs ($17K)

Type	Security	Shares	Price	Value
Sale	Common Stock	1,000	$16.50	$17K

Holdings After Transaction: Common Stock — 87,140 shares (Direct, null)

Footnotes (1)

1. The sale reported in this Form 4 were effected automatically pursuant to a Rule 10b5-1 plan adopted by the reporting person. These shares were sold in a single transaction at $16.50.

Key Figures

Shares sold: 1,000 shares Sale price: $16.50 per share Shares held after sale: 87,140 shares

3 metrics

Shares sold 1,000 shares Open-market sale of common stock

Sale price $16.50 per share Price for the 1,000-share transaction

Shares held after sale 87,140 shares Direct ownership following the transaction

Key Terms

Rule 10b5-1 plan, open-market sale, Form 4

3 terms

Rule 10b5-1 plan regulatory

"The sale reported in this Form 4 were effected automatically pursuant to a Rule 10b5-1 plan"

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.

open-market sale financial

"transaction_action: open-market sale"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Form 4 regulatory

"The sale reported in this Form 4 were effected automatically"

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.

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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)
06/03/2026

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	06/03/2026		S(1)		1,000	D	$16.5(2)	87,140	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 sale reported in this Form 4 were effected automatically pursuant to a Rule 10b5-1 plan adopted by the reporting person.

2. These shares were sold in a single transaction at $16.50.

Remarks:

	/s/ William Frederick, attorney-in-fact for John Anthony DiBella	06/04/2026
	** 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. The shares were sold in an open-market transaction at $16.50 per share, with the sale disclosed on a Form 4 insider trading report.

At what price did the Simulations Plus (SLP) insider sell shares?

The Simulations Plus insider sale was executed at $16.50 per share. According to the Form 4, all 1,000 shares were sold in a single transaction at this price, providing a clear reference point for the reported trade.

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

After the transaction, the reporting officer directly holds 87,140 Simulations Plus common shares. This post-transaction balance shows that the 1,000 shares sold were a relatively small portion of his overall reported direct ownership position.

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

Yes. The Form 4 footnotes state the sale was executed automatically under a Rule 10b5-1 plan. Such plans are pre-arranged trading programs, indicating the timing of this sale was scheduled in advance rather than decided spontaneously.

Who is the Simulations Plus (SLP) insider involved in this Form 4 filing?

The insider is John Anthony DiBella II, Chief Revenue Officer of Simulations Plus. He is listed as an officer of the company on the Form 4 and reported the open-market sale of 1,000 shares of the company’s common stock.