Robin Tomasello, Chief Accounting Officer of SentinelOne, Inc. (NYSE:S), filed a Form 4 on November 9, 2026, disclosing two dispositions of Class A Common Stock on November 6 and November 9, 2026.

Key Highlights

  • First transaction: 5,293 shares of Class A Common Stock disposed on November 6, 2026, at $21.9102 per share, described as an issuer-mandated sell-to-cover for tax withholding on vesting RSUs.
  • Second transaction: 2,986 shares disposed on November 9, 2026, at $22.09 per share, effected pursuant to a Rule 10b5-1 trading plan adopted June 9, 2026.
  • Resulting ownership: Tomasello beneficially owned 396,833 shares of Class A Common Stock directly following the November 9 transaction.
  • Forfeiture condition: According to the filing, certain of the shares held are subject to forfeiture to the issuer if underlying vesting conditions are not met.
  • 10b5-1 plan: The November 9 sale was made under a plan the reporting person adopted on June 9, 2026, the filing states.

Tomasello's Two-Day Share Dispositions: RSU Tax Cover and 10b5-1 Plan Sale

According to the Form 4 filed with the SEC, Robin Tomasello, identified as Chief Accounting Officer of SentinelOne, Inc., reported two separate dispositions of Class A Common Stock over consecutive trading days. Both transactions are recorded as direct ownership and carry transaction code "S," indicating sales.

The filing states that the November 6, 2026 sale of 5,293 shares at $21.9102 per share "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." The filing further notes that "pursuant to the Issuer's equity incentive plan, an award recipient's tax withholding obligations must be funded by a 'sell to cover' transaction." Following that sale, beneficial ownership stood at 399,819 shares, the filing disclosed.

The November 9, 2026 sale of 2,986 shares at $22.09 per share was described as effected pursuant to a Rule 10b5-1 trading plan that Tomasello adopted on June 9, 2026. After this transaction, direct beneficial ownership fell to 396,833 shares, according to the filing. The form was signed by Keenan Conder as Attorney-in-Fact on November 9, 2026. The filing also indicates that certain shares held by Tomasello remain subject to forfeiture if underlying vesting conditions are not satisfied.

What Was Disclosed

SentinelOne Chief Accounting Officer Robin Tomasello filed a Form 4 reporting two sales totaling 8,279 shares of Class A Common Stock on November 6 and November 9, 2026, one as an issuer-mandated RSU tax withholding sale and one under a Rule 10b5-1 plan, leaving direct beneficial ownership of 396,833 shares.