SentinelOne chief accounting officer Tomasello sells $159k in stock

Published 09/09/2025, 23:10
© SentinelOne PR

SentinelOne, Inc. NASDAQ:S Chief Accounting Officer Robin Tomasello sold 8,508 shares of Class A Common Stock at $18.69 on September 8, 2025. The total value of the sale was $159,014. The cybersecurity company, currently valued at $6 billion, has demonstrated strong financial health with a 75% gross profit margin and 25% year-over-year revenue growth. According to InvestingPro analysis, the stock appears to be trading below its Fair Value.

Following the transaction, Tomasello directly owns 297,536 shares of SentinelOne , Inc. The stock has shown resilience with a 1.6% gain over the past week, despite trading 39% below its 52-week high of $29.29.Certain of the shares are subject to forfeiture to the Issuer if underlying vesting conditions are not met..

The sale reported on this Form 4 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. Pursuant to the Issuer’s equity incentive plan, an award recipient’s tax withholding obligations must be funded by a "sell to cover" transaction.

The sale was executed automatically to cover tax obligations related to the vesting of restricted stock units.

The transaction was reported to the Securities and Exchange Commission (SEC) on September 9, 2025.

In other recent news, SentinelOne has made significant moves by acquiring Prompt Security, Inc. and agreeing to acquire Observo AI. The acquisition of Prompt Security was completed for approximately $180 million in a mix of cash and Class A common stock. Additionally, SentinelOne plans to purchase Observo AI for around $225 million using a combination of cash and stock, enhancing its data pipeline capabilities. JMP analyst Trevor Walsh reiterated a Market Outperform rating on SentinelOne following these announcements.

In another development, SentinelOne has partnered with Schwarz Digits to create a sovereign AI-powered cybersecurity platform for European customers. This collaboration aims to meet European compliance requirements, including GDPR, by integrating SentinelOne’s Singularity Platform with Schwarz Digits’ STACKIT cloud infrastructure. Furthermore, SentinelOne has launched a new program called Managed AI Defense, in partnership with Pax8, to offer enterprise-level cybersecurity to small and mid-sized businesses through Managed Service Providers. These recent developments highlight SentinelOne’s strategic efforts to expand its capabilities and market reach.

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