Mark S. Peek - 25 Jun 2026 Form 4 Insider Report for SentinelOne, Inc. (S)

Reporting relationship: Director
Issuer ticker: S
Reported as of: 25 Jun 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 26 Jun 2026, 21:18:41 UTC
Prior SEC filing: 03 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Keenan Conder, Attorney-in-Fact

Key filing fact

Mark S. Peek filed Form 4 for SentinelOne, Inc. (S) on 26 Jun 2026.

Key facts

This page summarizes Mark S. Peek's Form 4 filing for SentinelOne, Inc. (S).
2 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 26 Jun 2026, 21:18.

Change

Previous filing in this sequence was filed on 03 Jun 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001184754 Primary reporting owner

PEEK MARK S

Relationship: Director
Address: C/O SENTINELONE, INC., 444 CASTRO STREET, SUITE 400, MOUNTAIN VIEW
Signature: /s/ Keenan Conder, Attorney-in-Fact
Signature date: 26 Jun 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

S transaction

Class A Common Stock

Award

Transaction value
Shares: +4,746
Change %: +11%
Price: $0.000000^*
Shares after: 48,247
Date: 25 Jun 2026
Ownership: Direct
Footnotes: F1, F2, F3

S transaction

Class A Common Stock

Award

Transaction value
Shares: +14,238
Change %: +30%
Price: $0.000000^*
Shares after: 62,485
Date: 25 Jun 2026
Ownership: Direct
Footnotes: F3, F4

S holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 120,000
Date: 25 Jun 2026
Ownership: By Omega Living Trust

S holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 5,527
Date: 25 Jun 2026
Ownership: By Children's Trust 3
Footnotes: F5

S holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 5,527
Date: 25 Jun 2026
Ownership: By Children's Trust 2
Footnotes: F5

S holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 5,527
Date: 25 Jun 2026
Ownership: By Children's Trust 1
Footnotes: F5

S holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 5,527
Date: 25 Jun 2026
Ownership: By Children's Trust 4
Footnotes: F5

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 5 footnotes

Footnote F1

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

Footnote F2

[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.

Footnote F3

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

Footnote F4

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.

Footnote F5

The reported securities are directly held by an irrevocable trust with a third-party trustee, which was settled by the reporting person and for which a child of the reporting person is the beneficiary.

SEC remarks

Exhibit 24.1 - Power of Attorney

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