Form 4: ON24 CFO Sells Shares for Tax Obligations

ON24 Chief Financial Officer Steven Vattuone sold shares of common stock totaling 35,717 units across three transactions in early December 2025, primarily to cover tax withholding obligations.

Summary

• Steven Vattuone, Chief Financial Officer of ON24, Inc., reported sales of common stock.
• Transactions occurred on December 1, 2, and 3, 2025.
• A total of 35,717 shares were sold across the three transactions.
• The sales were primarily conducted to cover tax withholding obligations in connection with the vesting of restricted stock units.
• All reported transactions were effected pursuant to Rule 10b5-1 trading plans adopted by the reporting person on August 7, 2024, and September 12, 2024.
• Following these transactions, Steven Vattuone's direct beneficial ownership of ON24 common stock decreased to 539,664 shares.

Sentiment

Score: 5

Explanation: Neutral. The filing reports routine insider stock sales primarily for tax withholding obligations, which is a common occurrence and does not inherently indicate positive or negative sentiment about the company's future prospects.

Future Outlook

N/A

Industry Context

N/A

Stakeholder Impact

• Shareholders: The sale of shares by a key executive slightly reduces their direct ownership stake, but the reason (tax withholding) suggests it's a routine event rather than a signal of lack of confidence.

Key Dates

Recommendation

The filing details routine insider sales by the CFO to cover tax withholding obligations related to restricted stock unit vesting. These transactions were pre-planned under Rule 10b5-1. Such sales are common and generally do not signal a change in the company's fundamental outlook or warrant a 'buy' or 'sell' recommendation based solely on this information. A 'hold' recommendation is appropriate as this is a neutral event.

Keywords

ON24, ONTF, Steven Vattuone, CFO, Insider Trading, Form 4, Stock Sale, Rule 10b5-1, Tax Withholding, Restricted Stock Units