SentinelOne CAO sells shares to cover RSU taxes

SentinelOne, Inc. Chief Accounting Officer Robin Tomasello reported a mandated sale of 2,459 shares of Class A Common Stock on May 6, 2026.

Rhea-AI Filing Summary

SentinelOne, Inc. Chief Accounting Officer Robin Tomasello reported a mandated sale of 2,459 shares of Class A Common Stock on May 6, 2026. The shares were sold in open-market transactions at a weighted average price of $15.6474 per share, with individual trades between $15.35 and $15.65.

The company required this “sell to cover” transaction to fund tax withholding obligations tied to the vesting and settlement of Restricted Stock Units, so it was not a discretionary trade. After the sale, Tomasello directly owned 457,235 shares, some of which remain subject to forfeiture if vesting conditions are not met.

Insider Trade Summary

Net Seller: 2,459 shares

Net Sell 1 txn

Insider TOMASELLO ROBIN

Role Chief Accounting Officer

Sold 2,459 shs ($38K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	2,459	$15.6474	$38K

Holdings After Transaction: Class A Common Stock — 457,235 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 $15.35 to $15.65, 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: 2,459 shares Weighted average sale price: $15.6474 per share Sale price range: $15.35–$15.65 per share +1 more

4 metrics

Shares sold 2,459 shares Issuer-mandated sale on May 6, 2026 to cover tax withholding

Weighted average sale price $15.6474 per share Open-market sale of SentinelOne Class A Common Stock

Sale price range $15.35–$15.65 per share Multiple transactions within this price range on sale date

Shares owned after transaction 457,235 shares Direct ownership by Robin Tomasello following the sale

Key Terms

Restricted Stock Units, sell to cover, weighted average price, equity incentive plan, +1 more

5 terms

Restricted Stock Units financial

"tax withholding obligations 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.

equity incentive plan financial

"Pursuant to the Issuer's equity incentive plan, an award recipient's tax withholding obligations"

An equity incentive plan is a program that gives employees, executives or directors the right to receive company stock or options to buy stock as part of their pay. Think of it as offering slices of future company profit to motivate people to boost long‑term performance; for investors it matters because it can align employee goals with shareholder value but also increases the number of shares outstanding, which can dilute existing ownership.

subject to forfeiture financial

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

FAQ

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

What insider transaction did SentinelOne (S) disclose for Robin Tomasello?

SentinelOne reported that Chief Accounting Officer Robin Tomasello sold 2,459 shares of Class A Common Stock. The sale occurred on May 6, 2026 as part of a mandated “sell to cover” transaction to satisfy tax withholding obligations from vesting Restricted Stock Units.

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

No, the sale was not discretionary. It was an issuer-mandated sale required under SentinelOne’s equity incentive plan to cover tax withholding obligations triggered by the vesting and settlement of Restricted Stock Units awarded to Robin Tomasello.

At what prices were the 2,459 SentinelOne (S) shares sold?

The 2,459 shares were sold at a weighted average price of $15.6474 per share. Individual trades occurred in multiple transactions at prices ranging from $15.35 to $15.65, with the weighted figure reported in the Form 4 filing.

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

After the mandated tax-cover sale, Robin Tomasello directly owned 457,235 shares of SentinelOne Class A Common Stock. The filing notes that certain of these shares are still subject to forfeiture if the underlying vesting conditions tied to the awards are not satisfied.

Why did SentinelOne (S) require a “sell to cover” transaction for RSUs?

SentinelOne’s equity incentive plan requires award recipients to fund tax withholding obligations through a “sell to cover” transaction. When Restricted Stock Units vest and settle, a portion of the resulting shares is sold to pay taxes owed on that vesting event.

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

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Accepted by SEC EDGAR 05/08/2026 - 04:55 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)
05/06/2026

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	05/06/2026		S(1)		2,459	D	$15.6474(2)	457,235(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 $15.35 to $15.65, 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	05/07/2026
	** 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)