Tomer Weingarten, President and CEO of SentinelOne (S 2.66%), executed an open-market sale of 125,429 shares for a total consideration of approximately $1.9 million on Dec. 11, 2025, as disclosed in a SEC Form 4 filing.
Transaction summary
| Metric | Value |
|---|---|
| Shares sold (direct) | 125,429 |
| Transaction value | ~$1.9 million |
| Post-transaction shares (direct) | 1,093,108 |
| Post-transaction value (direct ownership) | ~$16.5 million |
Transaction and post-transaction values are based on the SEC Form 4 weighted average purchase price ($15.09).
Key questions
- How does the size of this sale compare to Weingarten's recent insider transactions?
The 125,429-share sale substantially exceeds Weingarten's recent median of open-market sales of 60,864 shares. - What proportion of his remaining direct stake did this transaction represent?
This sale reduced his direct holdings of SentinelOne by 10.29%.
Company overview
| Metric | Value |
|---|---|
| Price (as of Jan. 13, 2026 close) | $14.64 |
| Market capitalization | $4.98 billion |
| Revenue (TTM) | $955.65 million |
| 1-year price change | -34.70% |
Company snapshot
- SentinelOne is a cybersecurity company specializing in autonomous threat prevention and response solutions for complex IT environments.
- The company leverages artificial intelligence to deliver real-time protection and streamline security operations for its enterprise clients across the globe.
- Serves organizations in the United States and internationally with cyber threat protection solutions.
NYSE: S
Key Data Points
What this transaction means for investors
Investors should be aware that Weingarten's sale of shares was part of a Rule 10b5-1 trading plan, in which the stock option for Class B shares was pre-set in the summer of 2025 to be exercised later that year and subsequently sold. The Class B shares, reserved for insiders, are automatically converted into Class A shares upon exercise of the option.
Two weeks after that filing, the CEO had more sold disposed of through the plan, but they were gifted to a charitable foundation instead of being sold. And after more shares were acquired and sold as recent as Jan. 6, 2026, the President's total holdings of Class A shares sit at 1,145,608, worth $17.42 million, using the closing price that day.
Sentinel One stock fell 34% in 2025, and the company is currently struggling operationally as it faces strong competition in the cybersecurity industry, slow financial growth, and its CFO is set to depart the company in mid-January, leaving Wall Street less optimistic about the company in 2026, as many analysts have recently dropped their grades of the stock to neutral.
Glossary
Open-market sale: The sale of securities on a public exchange at prevailing market prices.
Insider transaction: A trade of company stock by an executive, director, or major shareholder, reported to regulators.
SEC Form 4: A regulatory filing disclosing insider trades of company securities by officers, directors, or significant shareholders.
Weighted average price: The average price per share, adjusted for the number of shares traded at each price.
Direct ownership: Shares held personally by an individual, not through trusts or related entities.
Indirect holdings: Shares owned through entities such as trusts, family members, or controlled companies.
Derivative security: A financial instrument whose value is based on an underlying asset, such as stock options or convertible securities.
Class A common stock: A type of company share, often with standard voting rights and ownership features.
Class B common stock: A separate class of company shares, typically with different voting rights or conversion privileges.
Disposition: The act of selling or otherwise transferring ownership of an asset.
Conversion: The process of exchanging one class of security for another, such as Class B to Class A shares.
TTM: The 12-month period ending with the most recent quarterly report.
