SentinelOne (S) CAO awarded 56,171 RSUs in new equity grant

Rhea-AI Filing Summary

TOMASELLO ROBIN reported acquisition or exercise transactions in this Form 4 filing.

SentinelOne, Inc. Chief Accounting Officer Robin Tomasello received a grant of 56,171 shares of Class A Common Stock in the form of restricted stock units. These RSUs were awarded at no cash cost per share and increased her directly held position to 459,694 shares after the grant.

The RSUs vest over time: 1/16 of the award vests on August 5, 2026, and 1/16 vests on each following November 5, February 5, May 5, and August 5 until fully vested, as long as she continues in service. Some shares can be forfeited if vesting conditions are not met.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider TOMASELLO ROBIN

Role Chief Accounting Officer

Type	Security	Shares	Price	Value
Grant/Award	Class A Common Stock	56,171	$0.00	--

Holdings After Transaction: Class A Common Stock — 459,694 shares (Direct)

Footnotes (1)

1. Represents a grant of restricted stock units ("RSUs") that shall vest as to 1/16th of the total award on August 5, 2026 (the "First Vesting Date") and thereafter shall vest as to 1/16th of the total award on the 5th of November, February, May, and August, until fully vested, subject to the Reporting Person's continued service through each vesting date. Certain of the shares are subject to forfeiture to the Issuer if underlying vesting conditions are not met.

Key Figures

RSUs granted: 56,171 shares Price per share: $0.0000 per share Shares after transaction: 459,694 shares +2 more

5 metrics

RSUs granted 56,171 shares Restricted stock units of Class A Common Stock granted to CAO

Price per share $0.0000 per share Reported transaction price for RSU grant

Shares after transaction 459,694 shares Total Class A Common Stock held directly after grant

Initial vesting date fraction 1/16 of award Portion vesting on August 5, 2026

Initial vesting date August 5, 2026 First RSU vesting date for the award

Key Terms

restricted stock units ("RSUs"), vest, forfeiture, vesting conditions

4 terms

restricted stock units ("RSUs") financial

"Represents a grant of restricted stock units ("RSUs") that shall vest as to 1/16th"

Restricted stock units (RSUs) are a company promise to give an employee shares of stock (or cash equivalent) in the future, but only after certain conditions—usually staying with the company for a set time or hitting performance goals—are met. Investors watch RSUs because when they vest they increase the number of shares outstanding and can lead insiders to sell shares, affecting share price, company dilution and the true cost of employee pay.

vest financial

"shall vest as to 1/16th of the total award on August 5, 2026"

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

forfeiture financial

"Certain of the shares are subject to forfeiture to the Issuer"

vesting conditions financial

"if underlying vesting conditions are not met"

Vesting conditions are the rules that determine when someone earning company stock or stock options actually gains the right to keep or sell them, typically based on staying with the company for a set time or meeting performance targets. Think of it like keys that unlock gradually — some unlock by calendar date, others only after agreed milestones. Investors care because vesting shapes management incentives, the timing of share sales, and the number of shares that can enter the market, which can affect a company's valuation and ownership mix.

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 CALIFORNIA 94041

(City) (State) (Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/15/2026

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
Class A Common Stock	04/15/2026		A		56,171(1)	A	$0	459,694(2)	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. Represents a grant of restricted stock units ("RSUs") that shall vest as to 1/16th of the total award on August 5, 2026 (the "First Vesting Date") and thereafter shall vest as to 1/16th of the total award on the 5th of November, February, May, and August, until fully vested, subject to the Reporting Person's continued service through each vesting date.

2. 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	04/17/2026
	** 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 did SentinelOne (S) disclose about Robin Tomasello’s latest equity grant?

SentinelOne disclosed that Chief Accounting Officer Robin Tomasello received 56,171 restricted stock units of Class A Common Stock. The award was granted at no cash cost per share and brought her directly held total to 459,694 shares after the transaction, reflecting routine equity-based compensation.

How many SentinelOne (S) shares does Robin Tomasello hold after this Form 4?

After the restricted stock unit grant, Robin Tomasello holds 459,694 shares of SentinelOne Class A Common Stock directly. This total includes the newly granted 56,171 RSUs, which will convert into shares as they vest over time, assuming all vesting conditions continue to be satisfied.

How do Robin Tomasello’s new SentinelOne (S) RSUs vest over time?

The 56,171 RSUs vest gradually. One sixteenth of the total vests on August 5, 2026, then one sixteenth on each November 5, February 5, May 5, and August 5 thereafter. Vesting continues until the entire award is vested, conditioned on continued service through each vesting date.

Are Robin Tomasello’s SentinelOne (S) RSUs subject to forfeiture?

Yes. The filing notes that certain shares underlying the RSU award are subject to forfeiture to SentinelOne if vesting conditions are not met. This means unvested portions can be lost if the required continued service or other vesting requirements are not satisfied over the vesting schedule.

Was Robin Tomasello’s SentinelOne (S) equity transaction a market purchase or sale?

The transaction was not a market purchase or sale. It is reported with code “A,” indicating a grant or award acquisition. The 56,171 Class A Common Stock RSUs were granted as compensation at a reported price of $0.0000 per share rather than bought or sold on the open market.