SentinelOne CEO Sells Shares Worth $2.3 Million as the Stock Soars

Robert Izquierdo, The Motley Fool

Wed, September 16, 2026 at 9:20 PM GMT+3 4 min read

S +0.09%

Tomer Weingarten, President and Chief Executive Officer of SentinelOne, Inc. (NYSE:S), sold ~114,900 shares of the company on September 11, 2026, according to a recent SEC Form 4 filing.

Transaction summary

Transaction value based on SEC Form 4 weighted average sale price ($19.89); post-transaction value based on September 11, 2026 market close ($19.75).

Key questions

What were the specifics of this transaction?
The executive first converted Class B common stock into Class A common stock on a one-for-one basis before executing the sale. This conversion is a standard procedure for insiders holding multi-class equity who seek to realize liquidity in the publicly traded Class A shares.
How does this sale align with recent stock performance?
The shares were sold following a one-year total return of 7% as of the September 11, 2026 transaction date. As of the September 15, 2026 market close, the stock was priced at $23.48, which is higher than the weighted average execution price of $19.89.
What is the scope of the CEO's remaining equity exposure?
Weingarten retains a substantial position in the company, consisting of ~1.7 million directly held shares and approximately 3.4 million direct derivative securities. The executive also holds an indirect interest in 423,629 shares through an irrevocable trust over which the reporting person may exercise remove and replace powers.
Was this a discretionary trade?
The transaction was non-discretionary and followed a Rule 10b5-1 trading plan established more than a year prior to the execution. Such plans are designed to allow insiders to diversify their portfolios on a pre-determined schedule, reducing the impact of short-term market volatility or material non-public information on trade timing.

Company Overview

Company Snapshot

SentinelOne delivers a unified Extended Detection and Response (XDR) platform called Singularity XDR that consolidates endpoint protection, endpoint detection and response, cloud workload protection, and IoT security capabilities into a single integrated system powered by artificial intelligence.
The company operates on a subscription-based software-as-a-service (SaaS) model, generating recurring revenue from enterprise customers through licensing of its Singularity platform and related security services.
SentinelOne primarily serves mid-market and large enterprise organizations globally that require comprehensive cybersecurity infrastructure to protect their endpoint devices, cloud workloads, and IoT environments.

SentinelOne is a global cybersecurity infrastructure software company with a market cap of $7.6 billion. The company's competitive advantage lies in its AI-powered Singularity XDR platform, which provides unified security across multiple attack surfaces through a single consolidated data stack.

With operations spanning the United States and international markets, SentinelOne is positioned as a comprehensive endpoint and cloud security provider for enterprise customers.

What this transaction means for investors

The September 11 sale of SentinelOne stock by CEO Tomer Weingarten occurred at a weighted average price of $19.89 per share. This was just days before the stock's September 15, 2026 market close of $23.48, which is very close to its 52-week high of $23.95.

However, Weingarten's disposition was not a market-timed investment decision. The sale was executed as part of a pre-established Rule 10b5-1 plan, making this a non-discretionary transaction.

The CEO retains a sizable equity stake, post-sale. He had 1.7 million directly held Class A shares and another 3.4 million Class B shares along with 423,629 indirectly held shares in a trust. This ensures his continued alignment with shareholder interests.

SentinelOne stock is soaring because Wall Street is realizing the importance of cybersecurity in a world where artificial intelligence agents are sophisticated enough to hack an organization's defenses at unprecedented speed. Given this backdrop, the company's sales are going strong. It delivered revenue of $292 million in its fiscal second quarter, ended July 31, which represents a strong 21% year-over-year increase.

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Robert Izquierdo has positions in SentinelOne. The Motley Fool has no position in any of the stocks mentioned. The Motley Fool has a disclosure policy.

SentinelOne CEO Sells Shares Worth $2.3 Million as the Stock Soars was originally published by The Motley Fool