[Form 4] SentinelOne, Inc. Insider Trading Activity

Rhea-AI Filing Summary

The filing reports that Barbara A. Larson, Chief Financial Officer and an officer of SentinelOne, Inc. (S), executed an issuer-mandated sale of 54,583 shares of Class A common stock on 10/06/2025 at a price of $18.13 per share. The sale was a sell-to-cover to satisfy tax withholding obligations tied to the vesting and settlement of restricted stock units, not a discretionary trade.

After the sale, Ms. Larson beneficially owned 549,498 shares of Class A common stock, which includes 1,094 shares acquired under the employee stock purchase plan and some shares that remain subject to forfeiture if vesting conditions are unmet. The Form 4 was signed on 10/07/2025.

Positive

• Sell-to-cover transaction indicates the sale was non-discretionary and plan-driven
• Substantial beneficial ownership remains with the CFO at 549,498 shares after the sale
• Employee Stock Purchase Plan participation: 1,094 shares acquired under ESPP (exempt rules)

Negative

• Reduction of Class A shares by 54,583 shares, which modestly lowers insider share count
• Some shares subject to forfeiture if vesting conditions are not met, creating potential future ownership changes

Insights

Corporate Governance Analyst

CFO sold shares via mandated sell-to-cover; ownership still substantial.

The transaction is described as an issuer-mandated sell-to-cover to meet tax withholding when restricted stock units vested on 10/06/2025, indicating it was a routine, plan-driven action rather than a discretionary executive sale. The reporting shows post-transaction beneficial ownership of 549,498 Class A shares, which remains a material holding for an officer.

Key dependencies include the ongoing vesting schedule and any future required withholding events; monitor further Form 4 filings for additional plan-driven disposals or changes in beneficial ownership over the next 12 months.

Compensation & Tax Specialist

The sale covered tax withholding from RSU settlement; price was $18.13.

According to the filing, the sale of 54,583 shares at $18.13 served solely to fund tax obligations arising from RSU vesting, a common approach under equity incentive plans. The filing also notes 1,094 shares acquired through the employee stock purchase plan that are exempt from Section 16 reporting rules.

Tax-driven sales can recur on future vesting dates; investors may want to note timing around reported vesting events and any changes to the equity plan in subsequent filings within the next fiscal year.

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^*

Larson Barbara A

(Last) (First) (Middle)

C/O SENTINELONE, INC.

444 CASTRO STREET, SUITE 400

(Street)

MOUNTAIN VIEW CA 94041

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
SentinelOne, Inc. [ S ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
10/06/2025

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
Class A Common Stock	10/06/2025		S(1)		54,583	D	$18.13	549,498(2)(3)	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 on this Form 4 represents an Issuer mandated sale by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of Restricted Stock Units, and it does not represent a discretionary trade by the Reporting Person. Pursuant to the Issuer's equity incentive plan, an award recipient's tax withholding obligations must be funded by a "sell to cover" transaction.

2. Includes 1,094 of Class A Common Stock acquired by the reporting person in one or more transactions with the issuer pursuant to its Employee Stock Purchase Plan, which transactions are exempt pursuant to Rules 16a3(f)(1)(i)(B) and 16b3(c).

3. Certain of the shares are subject to forfeiture to the Issuer if underlying vesting conditions are not met.

Remarks:

	/s/ Keenan Conder, Attorney-in-Fact	10/07/2025
	** 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.

FAQ

What did SentinelOne (S) CFO Barbara Larson sell on 10/06/2025?

She executed an issuer-mandated sell-to-cover sale of 54,583 Class A common shares at $18.13 per share to satisfy tax withholding from RSU vesting.

Was the sale by the CFO a discretionary trade?

No. The filing states the sale was mandated by the issuer to cover tax withholding obligations and was not a discretionary trade by the reporting person.

How many shares does the CFO beneficially own after the transaction?

The filing reports beneficial ownership of 549,498 Class A common shares following the reported transaction.

Are any of the CFO's shares exempt from reporting or subject to forfeiture?

Yes. 1,094 shares were acquired via the employee stock purchase plan and are exempt under specified rules; certain other shares are subject to forfeiture if vesting conditions fail.

When was the Form 4 signed and filed?

The Form 4 shows the transaction date as 10/06/2025 and the signature date as 10/07/2025.