SentinelOne (S) CAO executes mandated share sale to cover RSU taxes

Rhea-AI Filing Summary

SentinelOne, Inc. Chief Accounting Officer Robin Tomasello reported an open-market sale of 10,163 shares of Class A common stock at a weighted average price of $13.8114 per share. According to the disclosure, this issuer-mandated “sell to cover” transaction was executed solely to fund tax withholding on recently vested restricted stock units and was not a discretionary trade. After this tax-related sale, Tomasello directly holds 400,871 shares, some of which remain subject to forfeiture if vesting conditions are not met. The company notes the shares were sold in multiple trades at prices between $13.81 and $14.04.

Insider Trade Summary

Net Seller: 10,163 shares ($140,365)

Net Sell 1 txn

Insider TOMASELLO ROBIN

Role Chief Accounting Officer

Sold 10,163 shs ($140K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	10,163	$13.8114	$140K

Holdings After Transaction: Class A Common Stock — 400,871 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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $13.81 to $14.04, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth herein. Certain of the shares are subject to forfeiture to the Issuer if underlying vesting conditions are not met.

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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).

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)
03/06/2026

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	03/06/2026		S(1)		10,163	D	$13.8114(2)	400,871(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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $13.81 to $14.04, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth herein.

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	03/09/2026
	** 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 10,163 shares of Class A common stock. The sale was mandated by the company to cover tax withholding arising from vested restricted stock units, rather than a discretionary decision to reduce her investment position.

Why did SentinelOne (S) Chief Accounting Officer sell 10,163 shares?

The 10,163 shares were sold to cover tax withholding obligations on vested restricted stock units. Under SentinelOne’s equity incentive plan, these obligations must be funded through a “sell to cover” transaction, meaning the sale was mechanical and not a voluntary portfolio adjustment.

At what price were the SentinelOne (S) shares sold in this Form 4?

The weighted average sale price was $13.8114 per share, with multiple trades executed between $13.81 and $14.04. The filing notes that detailed trade-by-trade pricing information is available upon request from SentinelOne, its security holders, or the SEC staff.

How many SentinelOne (S) shares does the insider hold after this transaction?

Following the tax-related sale, Robin Tomasello directly holds 400,871 shares of SentinelOne Class A common stock. The filing also explains that certain shares are still subject to forfeiture if future vesting conditions specified in the company’s equity awards are not satisfied.

Was the SentinelOne (S) insider sale a discretionary trade or tax-related?

The filing states the sale was issuer mandated and intended solely to cover tax withholding on restricted stock unit vesting. It explicitly clarifies that the sale did not represent a discretionary trade by the reporting person, indicating a routine tax compliance transaction.