Form 4: OneStream Director Sells Over 6,600 Shares Under Pre-Arranged Trading Plan

OneStream, Inc. Director Jonathan D. Mariner sold 6,631 shares of Class A Common Stock for approximately $27.9 per share on June 2, 2025, pursuant to a Rule 10b5-1 trading plan.

Summary

• Jonathan D. Mariner, a Director of OneStream, Inc. (OS), sold 6,631 shares of the company's Class A Common Stock.
• The transaction occurred on June 2, 2025.
• The shares were sold at a weighted average price of $27.9 per share, with individual sales occurring within a price range of $27.54 to $28.08.
• This sale was executed pursuant to a Rule 10b5-1 trading plan that the Reporting Person adopted on February 28, 2025.
• Following this transaction, Mr. Mariner directly beneficially owns 46,910 shares of OneStream, Inc. Class A Common Stock, which includes unvested restricted stock units.

Sentiment

Score: 5

Explanation: The sentiment is neutral to slightly negative. While insider selling can be perceived negatively, the execution under a pre-arranged Rule 10b5-1 plan significantly mitigates concerns that the sale is based on new, adverse non-public information, making it a routine liquidity or diversification event.

Positives

• The sale was conducted under a pre-arranged Rule 10b5-1 trading plan, which indicates that the transaction was scheduled in advance and not based on new, non-public information, thereby reducing concerns about its signaling effect.

Negatives

• Insider selling, even when pre-arranged, can sometimes be perceived by the market as a neutral to slightly negative signal regarding management's confidence in the company's near-term prospects.

Risks

• No specific risks related to company operations, financial health, or strategic direction are disclosed in this Form 4 filing.

Future Outlook

This Form 4 filing does not contain any forward-looking statements or guidance regarding the company's future performance or outlook.

Management Comments

• The filing indicates that the sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 28, 2025.
• The Reporting Person undertakes to provide full information regarding the number of shares sold at each separate price within the reported range upon request by the SEC staff, the issuer, or any security holder.

Industry Context

This Form 4 filing is specific to an insider transaction at OneStream, Inc. and does not provide information related to broader industry trends or competitive landscape.

Stakeholder Impact

• Shareholders may view insider selling with scrutiny, but the presence of a Rule 10b5-1 plan helps to alleviate concerns that the sale is indicative of a lack of confidence in the company's future performance.

Next Steps

• The Reporting Person has undertaken to provide additional details on the specific prices of shares sold within the stated range upon request from the SEC, the issuer, or any security holder.

Key Dates

Keywords

OneStream, OS, Form 4, insider trading, stock sale, director, Jonathan D. Mariner, 10b5-1 plan, equity transaction