Simulations Plus CRO receives 27,500 options; 4-year vesting

Rhea-AI Filing Summary

Simulations Plus, Inc. (SLP) reported an insider equity award. A Form 4 discloses that Chief Revenue Officer John Anthony DiBella received stock options to purchase 27,500 shares at an exercise price of $16.02 on 10/16/2025.

The options expire on 10/15/2035 and vest in four equal annual installments, with one-fourth vesting on each anniversary of the grant date. Following the reported transaction, 27,500 derivative securities are beneficially owned directly.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider DiBella John Anthony II

Role Chief Revenue Officer

Type	Security	Shares	Price	Value
Grant/Award	Stock Options (Right to Buy)	27,500	$0.00	--

Holdings After Transaction: Stock Options (Right to Buy) — 27,500 shares (Direct)

Footnotes (1)

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Form 4 Insider Transactions: What Each Field Means →

Accepted by SEC EDGAR 10/17/2025 - 05:00 PM Learn about SEC filing dates

FAQ

What did SLP disclose in this Form 4?

A grant of stock options to the Chief Revenue Officer, covering 27,500 shares at an exercise price of $16.02.

Who is the reporting person in SLP's Form 4?

The reporting person is John Anthony DiBella, Chief Revenue Officer of Simulations Plus, Inc.

What is the grant and expiration date of the options reported by SLP (SLP)?

Grant date: 10/16/2025. Expiration date: 10/15/2035.

How do the SLP options vest for the CRO?

They vest in four equal installments over four years, with one-fourth vesting on each anniversary of the grant date.

What is the ownership form after the SLP transaction?

Following the transaction, 27,500 derivative securities are beneficially owned directly.

What type of security was granted in SLP's Form 4?

Stock options (right to buy) underlying Simulations Plus common stock.

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).

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)

42505 10TH STREET WEST

(Street)

LANCASTER CA 93534

(City) (State) (Zip)

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

3. Date of Earliest Transaction (Month/Day/Year)
10/16/2025

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

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

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

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

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
Stock Options (Right to Buy)	$16.02	10/16/2025		A		27,500		(1)	10/15/2035	Common Stock	27,500	$0	27,500	D

Explanation of Responses:

1. The stock options shall vest in four equal installments over a four year period, with one fourth of the stock options vesting on each anniversary of the date of grant.

Remarks:

	/s/ William Frederick, attorney-in-fact for John Anthony DiBella	10/17/2025
	** 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.