SentinelOne (NYSE: S) CAO executes tax sell-to-cover of 2,975 shares

Rhea-AI Filing Summary

SentinelOne, Inc. Chief Accounting Officer Robin Tomasello reported an automatic sale of Class A Common Stock. On February 6, 2026, 2,975 shares were sold at $13.15 per share to cover tax withholding obligations from vesting Restricted Stock Units under the company’s equity incentive plan, described as a mandatory “sell to cover” rather than a discretionary trade.

After this transaction, Tomasello beneficially owns 411,034 shares of SentinelOne Class A Common Stock, which include 1,374 shares acquired through the company’s Employee Stock Purchase Plan. Some of the remaining shares may be forfeited if their vesting conditions are not satisfied.

Insights

Equity compensation and insider-transactions analyst

Insider sale is a routine, issuer-mandated tax sell-to-cover event.

The transaction involves Robin Tomasello, Chief Accounting Officer of SentinelOne, Inc., selling 2,975 Class A shares at $13.15 on February 6, 2026. The filing states the sale was mandated by the issuer to fund tax withholding tied to Restricted Stock Unit vesting.

This type of “sell to cover” is a standard equity-compensation mechanism and the filing specifies it is not a discretionary trade. After the sale, Tomasello still holds 411,034 shares, including 1,374 acquired under the Employee Stock Purchase Plan, with some shares subject to vesting-based forfeiture.

Insider Trade Summary

Net Seller: 2,975 shares ($39,121)

Net Sell 1 txn

Insider TOMASELLO ROBIN

Role Chief Accounting Officer

Sold 2,975 shs ($39K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	2,975	$13.15	$39K

Holdings After Transaction: Class A Common Stock — 411,034 shares (Direct)

Footnotes (1)

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. Includes 1,374 shares of the Issuer's 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). Certain of the shares are subject to forfeiture to the Issuer if underlying vesting conditions are not met.

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).

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^*

TOMASELLO ROBIN

(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 Accounting Officer

3. Date of Earliest Transaction (Month/Day/Year)
02/06/2026

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	02/06/2026		S(1)		2,975	D	$13.15	411,034(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 1,374 shares of the Issuer's 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	02/06/2026
	** 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.

FAQ

What insider transaction did SentinelOne (S) report for Robin Tomasello?

SentinelOne reported that Chief Accounting Officer Robin Tomasello sold 2,975 Class A shares. The shares were sold at $13.15 each on February 6, 2026, as part of an issuer-mandated transaction to cover tax withholding from vesting Restricted Stock Units.

Was the SentinelOne (S) insider stock sale by Robin Tomasello discretionary?

The sale was not discretionary. The filing explains it was an issuer-mandated “sell to cover” transaction used to fund tax withholding obligations triggered by the vesting and settlement of Restricted Stock Units under SentinelOne’s equity incentive plan.

How many SentinelOne (S) shares does Robin Tomasello own after the Form 4 sale?

After the reported transaction, Robin Tomasello beneficially owns 411,034 shares of SentinelOne Class A Common Stock. This total includes 1,374 shares acquired through the company’s Employee Stock Purchase Plan, and some of the shares remain subject to forfeiture if vesting conditions are not met.

What price and number of SentinelOne (S) shares were sold in the Form 4 filing?

The Form 4 reports that 2,975 SentinelOne Class A Common Stock shares were sold at a price of $13.15 per share. The transaction occurred on February 6, 2026 and was described as an issuer-mandated tax withholding sale linked to Restricted Stock Unit vesting.

How are Employee Stock Purchase Plan shares reflected in SentinelOne (S) insider ownership?

The filing notes that Robin Tomasello’s beneficial ownership includes 1,374 SentinelOne Class A shares acquired through its Employee Stock Purchase Plan. These ESPP transactions are described as exempt under specific SEC rules, and they are part of the 411,034 total shares reported as owned.

Are any of Robin Tomasello’s SentinelOne (S) shares subject to vesting risk?

Yes. The explanation states that certain shares reported as owned remain subject to forfeiture if underlying vesting conditions are not satisfied. This means some portion of the reported 411,034 SentinelOne Class A shares could be lost if those conditions are not ultimately met.