SentinelOne (S) director Mark Barrenechea granted deferred and time-based stock units

Rhea-AI Filing Summary

Barrenechea Mark J reported acquisition or exercise transactions in this Form 4 filing.

SentinelOne, Inc. director Mark J. Barrenechea received equity awards in the form of Class A Common Stock-based units. He was granted 14,238 deferred restricted stock units on June 25, 2026, which vest in quarterly installments beginning September 15 and ending on the earliest of the next annual stockholder meeting or June 15, 2027, subject to continued service and deferred settlement under the company’s Non-Employee Director Compensation Program. He also received 3,543 restricted stock units that vest in full on the earliest of June 25, 2027, the next annual stockholder meeting (or immediately prior, in certain cases), death, disability, or a change in control, also conditioned on continued service. Certain shares are subject to forfeiture if vesting conditions are not met.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Barrenechea Mark J

Role null

Type	Security	Shares	Price	Value
Grant/Award	Class A Common Stock	3,543	$0.00	--
Grant/Award	Class A Common Stock	14,238	$0.00	--

Holdings After Transaction: Class A Common Stock — 30,142 shares (Direct, null)

Footnotes (1)

1. Represents an award of deferred restricted stock units (DSUs) granted on June 25, 2026, which shall vest on a time-based vesting schedule but for which settlement has been deferred pursuant to the Reporting Person's election under the Program (defined below). Each DSU represents a contingent right to receive one share of the Issuer's Class A Common Stock, subject to satisfaction of the time-based vesting conditions. The DSUs shall time-vest as to 25% of the total shares on each of September 15, December 15, and March 15, and with the final quarterly installment vesting on the earliest of (i) the date of the next annual meeting of the Issuer's stockholders, (ii) the date immediately prior to the next annual meeting of the Issuer's stockholders if the applicable non-employee director's service as a director ends at such meeting due to the Reporting Person's failure to be re-elected or the Reporting Person not standing for re-election, and [cont'd from Footnote 1] (iii) June 15, 2027, subject to the Reporting Person's provision of service to the Issuer on each vesting date, and with deferred settlement occurring subject to the terms of the Program. Certain of the shares are subject to forfeiture to the Issuer if underlying vesting conditions are not met. Represents an award of restricted stock units. The entire award shall vest and settle for shares of the Issuer's Class A Common Stock on the earliest of (a) June 25, 2027, (b) the date of the next annual meeting of the Issuer's stockholders (or the date immediately prior to such, if the Reporting Person's service as a director ends at such meeting due to his/her failure to be re-elected or not standing for re-election), (c) the Reporting Person's death, (d) the date on which the Reporting Person becomes disabled, or (e) the occurrence of a change in control as defined in the Issuer's Non-Employee Director Compensation Program (the "Program"), in each case subject to the Reporting Person's continued service to the Issuer on each vesting date.

Key Figures

Deferred restricted stock units granted: 14,238 units Restricted stock units granted: 3,543 units Post-award holdings (first grant line): 44,380 shares +4 more

7 metrics

Deferred restricted stock units granted 14,238 units Award of DSUs to Mark J. Barrenechea on June 25, 2026

Restricted stock units granted 3,543 units RSU award to Mark J. Barrenechea on June 25, 2026

Post-award holdings (first grant line) 44,380 shares Total Class A Common Stock reported following first transaction

Post-award holdings (second grant line) 30,142 shares Total Class A Common Stock reported following second transaction

Grant price per share $0.00 per share Equity awards granted without cash purchase price

Final DSU vesting date trigger June 15, 2027 Latest possible time-based vesting date for DSU award

RSU latest vesting date June 25, 2027 Latest scheduled vesting date for RSU award, absent earlier triggers

Key Terms

deferred restricted stock units (DSUs), restricted stock units, Non-Employee Director Compensation Program, change in control

4 terms

deferred restricted stock units (DSUs) financial

"Represents an award of deferred restricted stock units (DSUs) granted on June 25, 2026"

restricted stock units financial

"Represents an award of restricted stock units. The entire award shall vest and settle"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Non-Employee Director Compensation Program financial

"as defined in the Issuer's Non-Employee Director Compensation Program (the "Program")"

change in control financial

"or (e) the occurrence of a change in control as defined in the Issuer's"

A "change in control" occurs when the ownership or management of a company shifts significantly, such as through a merger, acquisition, or sale of a large part of its assets. This change can impact how the company is run and may influence its future direction. For investors, it matters because it can affect the company's stability, strategy, and value, often signaling potential changes in investment risk or opportunity.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 06/26/2026 - 09:23 PM Accepted by SEC EDGAR 06/26/2026 - 09:22 PM Learn about SEC filing dates

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^*

Barrenechea Mark J

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/25/2026

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	06/25/2026		A		3,543(1)(2)	A	$0	30,142(3)	D
Class A Common Stock	06/25/2026		A		14,238(4)	A	$0	44,380(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. Represents an award of deferred restricted stock units (DSUs) granted on June 25, 2026, which shall vest on a time-based vesting schedule but for which settlement has been deferred pursuant to the Reporting Person's election under the Program (defined below). Each DSU represents a contingent right to receive one share of the Issuer's Class A Common Stock, subject to satisfaction of the time-based vesting conditions. The DSUs shall time-vest as to 25% of the total shares on each of September 15, December 15, and March 15, and with the final quarterly installment vesting on the earliest of (i) the date of the next annual meeting of the Issuer's stockholders, (ii) the date immediately prior to the next annual meeting of the Issuer's stockholders if the applicable non-employee director's service as a director ends at such meeting due to the Reporting Person's failure to be re-elected or the Reporting Person not standing for re-election, and

2. [cont'd from Footnote 1] (iii) June 15, 2027, subject to the Reporting Person's provision of service to the Issuer on each vesting date, and with deferred settlement occurring subject to the terms of the Program.

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

4. Represents an award of restricted stock units. The entire award shall vest and settle for shares of the Issuer's Class A Common Stock on the earliest of (a) June 25, 2027, (b) the date of the next annual meeting of the Issuer's stockholders (or the date immediately prior to such, if the Reporting Person's service as a director ends at such meeting due to his/her failure to be re-elected or not standing for re-election), (c) the Reporting Person's death, (d) the date on which the Reporting Person becomes disabled, or (e) the occurrence of a change in control as defined in the Issuer's Non-Employee Director Compensation Program (the "Program"), in each case subject to the Reporting Person's continued service to the Issuer on each vesting date.

Remarks:

Exhibit 24.1 - Power of Attorney

	/s/ Keenan Conder, Attorney-in-Fact	06/26/2026
	** 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) director Mark J. Barrenechea acquire in this Form 4?

Mark J. Barrenechea received equity awards, not cash purchases, in SentinelOne Class A Common Stock-based units. He was granted 14,238 deferred restricted stock units and 3,543 restricted stock units, each subject to specific time-based and service-based vesting conditions set by the company.

How do the 14,238 deferred restricted stock units for SentinelOne (S) vest?

The 14,238 deferred restricted stock units vest 25% on each of September 15, December 15, and March 15. The final portion vests on the earliest of the next annual stockholder meeting date or June 15, 2027, assuming Mark J. Barrenechea continues serving SentinelOne.

What are the vesting terms of the 3,543 restricted stock units at SentinelOne (S)?

The 3,543 restricted stock units vest and settle in full on the earliest of June 25, 2027, the next annual stockholder meeting, Mark J. Barrenechea’s death or disability, or a qualifying change in control, in each case requiring continued service to SentinelOne until that vesting date.

Were SentinelOne (S) shares bought or sold in this Form 4 by Mark J. Barrenechea?

No open-market buying or selling occurred. The Form 4 shows stock-based compensation grants classified as acquisitions under code "A" for awards. These are equity grants with zero purchase price per share, not discretionary trades in SentinelOne stock.

Can the SentinelOne (S) equity awards reported for Mark J. Barrenechea be forfeited?

Yes. Certain shares underlying these awards are subject to forfeiture if the required vesting and continued service conditions are not satisfied. If he stops meeting the service-based conditions, some or all of the unvested units may be forfeited back to SentinelOne.