Form 4: Magnite CPO Sells Shares, Covers Taxes

Magnite's Chief Product Officer, Adam Lee Soroca, reported the sale of 10,857 shares under a pre-arranged trading plan and the forfeiture of 9,422 shares for tax obligations.

Summary

• Adam Lee Soroca, Chief Product Officer of Magnite, Inc. (MGNI), reported two transactions involving common stock.
• On November 15, 2025, 9,422 shares were forfeited at a price of $14.15 per share to cover tax withholding obligations associated with the vesting of restricted stock units.
• Following this forfeiture, Soroca beneficially owned 336,971 shares of common stock.
• On November 18, 2025, 10,857 shares were sold at a weighted average price of $13.23 per share, with individual transaction prices ranging from $13.13 to $13.30.
• This sale was executed pursuant to a Rule 10b5-1 trading plan adopted by Soroca on May 28, 2025.
• After both reported transactions, Soroca's direct beneficial ownership stands at 326,114 shares of common stock.

Sentiment

Score: 5

Explanation: The filing reports routine insider transactions, including a pre-planned sale and tax-related forfeiture, which are common but represent a reduction in insider holdings. The pre-planned nature of the sale mitigates any strong negative sentiment.

Negatives

• The transactions represent a reduction in the Chief Product Officer's direct beneficial ownership of Magnite common stock by a total of 20,279 shares.

Future Outlook

NA

Industry Context

NA

Stakeholder Impact

• Shareholders: A slight reduction in insider ownership, which is a common occurrence for executives managing their equity compensation and tax obligations. The pre-arranged nature of the sale under a 10b5-1 plan suggests it is not based on new material non-public information.

Key Dates

Recommendation

The Form 4 details routine insider transactions, including a pre-planned sale and tax-related forfeiture. While these transactions reduce insider holdings, they do not provide new fundamental information about Magnite's operational performance or strategic direction to warrant a change in investment thesis. Investors should consider these transactions in the broader context of the company's financial health and market position.

Keywords

Magnite, MGNI, Insider Trading, Form 4, Stock Sale, Executive Compensation, Adam Lee Soroca, Chief Product Officer, 10b5-1 Plan