Form 4: SentinelOne Director Boosts Stake with $595K Stock Purchase

SentinelOne Director Mark S. Peek acquired 40,000 shares of Class A Common Stock for approximately $595,600 through a pre-planned transaction.

Summary

• Mark S. Peek, a Director at SentinelOne, Inc. (S), purchased 40,000 shares of the company's Class A Common Stock.
• The transaction occurred on December 16, 2025, at a weighted average price of $14.89 per share, totaling approximately $595,600.
• The purchase was executed pursuant to a Rule 10b5-1(c) pre-arranged trading plan.
• The shares were acquired in multiple transactions at prices ranging from $14.715 to $14.90.
• Following this transaction, Mr. Peek beneficially owns 120,000 shares indirectly through the Omega Living Trust, 43,501 shares directly, and 22,108 shares indirectly through four separate Children's Trusts (5,527 shares each).

Sentiment

Score: 8

Explanation: The sentiment is positive due to a director's significant purchase of company stock, which typically signals strong insider confidence in the company's future performance and valuation.

Positives

• A Director's purchase of company stock signals confidence in the company's future prospects and valuation.
• The transaction was executed under a Rule 10b5-1 plan, indicating a pre-meditated investment decision rather than a reaction to immediate market events.

Future Outlook

The filing does not contain specific forward-looking statements or guidance from the company.

Industry Context

Insider buying, particularly by a director, is generally viewed by the market as a positive indicator of management's belief in the company's future performance and intrinsic value, often signaling undervaluation or strong growth prospects within the cybersecurity industry.

Related Party Transactions

• Shares are held indirectly by the Omega Living Trust, DTA 8/6/2015 Mark S Peek as Trustee, a revocable living trust, of which the Reporting Person is the sole beneficiary.
• Shares are held indirectly by irrevocable trusts with third-party trustees, settled by the reporting person, for which children of the reporting person are beneficiaries.

Stakeholder Impact

• Shareholders may interpret this insider purchase as a positive signal, potentially increasing investor confidence and demand for the stock.
• Employees may view this as a sign of stability and positive outlook from leadership.

Key Dates

Recommendation

A director's substantial purchase of company stock, especially through a pre-planned 10b5-1 arrangement, typically indicates strong conviction in the company's future prospects and suggests that the insider believes the stock is currently undervalued. This insider confidence can be a compelling signal for investors to consider a 'buy' position, aligning with management's long-term view.

Keywords

SentinelOne, S, Insider Trading, Stock Purchase, Director, Beneficial Ownership, Form 4, 10b5-1 Plan, Equity Acquisition