SentinelOne CAO sells 5,467 shares to cover taxes

SentinelOne, Inc. reported that Chief Accounting Officer Robin Tomasello sold 5,467 shares of Class A Common Stock on 2026-08-06 at a weighted average price of $20.084 per share, within a $20.07–$20.58 range.

Rhea-AI Filing Summary

SentinelOne, Inc. reported that Chief Accounting Officer Robin Tomasello sold 5,467 shares of Class A Common Stock on 2026-08-06 at a weighted average price of $20.084 per share, within a $20.07–$20.58 range. The sale was issuer-mandated as a "sell to cover" transaction to fund tax withholding obligations arising from vesting Restricted Stock Units and did not represent a discretionary trade. After the sale, Tomasello directly owned 439,863 shares, some of which are subject to forfeiture if vesting conditions are not met.

Insider Trade Summary

Net Seller: 5,467 shares

Net Sell 1 txn

Insider TOMASELLO ROBIN

Role Chief Accounting Officer

Sold 5,467 shs ($110K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock F1, F2, F3	5,467	$20.084	$110K

Holdings After Transaction: Class A Common Stock — 439,863 shares (Direct)

Footnotes (3)

1. F1. 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. F2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.07 to $20.58, 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. F3. Certain of the shares are subject to forfeiture to the Issuer if underlying vesting conditions are not met.

Key Figures

Shares sold: 5,467 shares Weighted average sale price: $20.084 per share Sale price range: $20.07 to $20.58 per share +2 more

5 metrics

Shares sold 5,467 shares Class A Common Stock sold on 2026-08-06 to cover tax withholding

Weighted average sale price $20.084 per share Weighted average price for the 5,467 shares sold

Sale price range $20.07 to $20.58 per share Range of individual prices for the reported sale transactions

Shares owned after sale 439,863 shares Direct Class A Common Stock holdings following the reported transaction

Net shares sold (transactionSummary) 5,467 shares Net sell shares reported across all transactions in this Form 4

Key Terms

Restricted Stock Units, sell to cover, weighted average price, tax withholding obligations, +1 more

5 terms

Restricted Stock Units financial

"in connection with the vesting and settlement of Restricted Stock Units"

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.

sell to cover financial

"tax withholding obligations must be funded by a "sell to cover" transaction"

Sell to cover is when a person who receives company stock through options or awards sells just enough shares immediately to pay required taxes, exercise costs, or fees, keeping the rest. Think of it like cashing part of a bonus to cover the tax bill so you can keep the remainder. For investors, it can create predictable small selling pressure and slightly change the number of shares actually held by insiders without increasing long‑term dilution.

weighted average price financial

"The price reported in Column 4 is a weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

tax withholding obligations financial

"sale ... to cover tax withholding obligations in connection with the vesting"

forfeiture financial

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

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

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

SentinelOne (S) reported that CAO Robin Tomasello sold 5,467 shares of Class A Common Stock on 2026-08-06 at a weighted average price of $20.084 per share to cover tax withholding from vesting RSUs, leaving her with 439,863 directly held shares.

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

No. SentinelOne (S) states the sale was an issuer-mandated "sell to cover" transaction to fund tax withholding obligations tied to the vesting and settlement of Restricted Stock Units, and explicitly notes that it does not represent a discretionary trade by the reporting person.

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

After the reported transaction, Robin Tomasello directly holds 439,863 SentinelOne (S) Class A Common shares. The company notes that certain of these shares remain subject to possible forfeiture if the underlying vesting conditions associated with those awards are not satisfied.

What price range were the SentinelOne (S) shares sold at in this Form 4 filing?

The SentinelOne (S) shares were sold at prices ranging from $20.07 to $20.58 per share. The Form 4 reports a weighted average sale price of $20.084 for the 5,467 shares, with the insider offering to provide detailed trade breakdowns upon request.

Was Robin Tomasello’s SentinelOne (S) trade executed under a Rule 10b5-1 trading plan?

The Form 4’s Rule 10b5-1 checkbox is not marked, and a footnote explains the sale was an issuer-mandated transaction to cover RSU-related tax withholding under the company’s equity incentive plan, rather than a sale under a Rule 10b5-1 trading plan.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/07/2026 - 07:03 PM Accepted by SEC EDGAR 08/07/2026 - 07:02 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^*

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)
08/06/2026

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	08/06/2026		S(1)		5,467	D	$20.084(2)	439,863(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 $20.07 to $20.58, 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:

Exhibit 24.1 - Power of Attorney

	/s/ Keenan Conder, Attorney-in-Fact	08/07/2026
	** 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)