SentinelOne, Inc.

Our directors and officers (as defined in Rule 16a-1(f) under the Exchange Act) are only permitted to trade in our securities pursuant to a prearranged trading plan intended to satisfy the affirmative defense of Rule 10b5-1(c) under the Exchange Act (a Rule 10b5-1 Plan). During the three months ended July 31, 2026, three of our Section 16 officers adopted new Rule 10b5-1 Plans. The Parekh Plan, Tomasello Plan, and Weingarten Plan (each as defined below) were entered into during an open trading window in accordance with our Insider Trading Policy.

On June 9, 2026, Sonalee Parekh, our Chief Financial Officer, adopted a Rule 10b5-1 Plan (the Parekh Plan) providing for the potential sale of certain shares of our Class A common stock which may be received by Ms. Parekh upon vesting and settlement of certain outstanding restricted stock units and performance stock units, net of any shares withheld by the Company to satisfy applicable tax obligations, with such sales occurring between an estimated start date of August 27, 2026 and an estimated end date of September 30, 2027. The number of shares to be withheld, and therefore the exact number of shares to be sold pursuant to the Parekh Plan, can only be determined upon the occurrence of the future vesting events. The Parekh Plan is scheduled to expire on September 30, 2027.

On June 9, 2026, Robin Tomasello, our Chief Accounting Officer, adopted a Rule 10b5-1 Plan (the Tomasello Plan) providing for the potential sale of certain shares of our Class A common stock which may be received by Ms. Tomasello upon vesting and settlement of certain outstanding options, restricted stock units, and performance stock units, net of any shares withheld by the Company to satisfy applicable tax obligations, with such sales occurring between an estimated start date of August 27, 2026 and an estimated end date of September 30, 2027. The number of shares to be withheld, and therefore the exact number of shares to be sold pursuant to the Tomasello Plan, can only be determined upon the occurrence of the future vesting events. The Tomasello Plan is scheduled to expire on September 30, 2027.

On July 2, 2026, Tomer Weingarten, our President and Chief Executive Officer, adopted a Rule 10b5-1 Plan (the Weingarten Plan) providing for the potential sale of: (i)500,000 shares of our Class A common stock and (ii) certain shares of our Class A common stock which may be received by Mr. Weingarten upon vesting and settlement of certain outstanding restricted stock units, net of any shares withheld by the Company to satisfy applicable tax obligations, with such sales occurring between an estimated start date of October 5, 2026 and an estimated end date of October 5, 2027. The number of shares to be withheld, and therefore the exact number of shares to be sold pursuant to the Weingarten Plan, can only be determined upon the occurrence of the future vesting events. The Weingarten Plan is scheduled to expire on October 5, 2027.