Form 4: Magnite CEO's Tax-Related Stock Forfeiture

Magnite CEO Michael G. Barrett reported a non-discretionary forfeiture of 12,198 common shares to cover tax obligations related to restricted stock unit vesting.

Summary

• Michael G. Barrett, CEO and Director of Magnite, Inc. (MGNI), reported a transaction on November 15, 2025.
• The transaction involved the forfeiture of 12,198 shares of Magnite Common Stock at a price of $14.15 per share.
• This forfeiture was non-discretionary and mandated by Magnite to cover tax withholding obligations associated with the vesting of restricted stock units.
• Following this transaction, Michael G. Barrett beneficially owns 237,659 shares of Magnite Common Stock directly.

Sentiment

Score: 5

Explanation: The filing reports a routine, non-discretionary transaction related to tax withholding on RSU vesting, which is a neutral event with no direct positive or negative implications for the company's operational or financial performance.

Negatives

• A reduction of 12,198 shares in the direct beneficial ownership of CEO Michael G. Barrett, although this was a non-discretionary tax-related event.

Future Outlook

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

Management Comments

• The forfeiture represents the non-discretionary forfeiture of shares on behalf of the Reporting Person pursuant to an arrangement mandated by the Issuer to cover the tax withholding obligations associated with the vesting of restricted stock units.

Industry Context

This type of insider transaction, specifically the forfeiture of shares to cover tax obligations upon the vesting of restricted stock units (RSUs), is a common and routine event across publicly traded companies. It reflects a standard compensation practice where equity awards are granted and taxed upon vesting.

Comparison to Industry Standards

• The mechanism of forfeiting shares to cover tax withholding on RSU vesting is a standard industry practice, widely adopted by companies to manage the tax implications for employees receiving equity compensation. This is comparable to practices seen at other ad-tech companies and broader technology firms that utilize RSUs as a significant component of executive compensation.

Stakeholder Impact

• Shareholders: A minor, routine reduction in the CEO's direct shareholdings, which is a common occurrence with RSU vesting and tax withholding. No material impact on overall shareholder value or company strategy is implied.
• Employees: The transaction highlights the company's use of restricted stock units as part of its compensation structure, which is a common incentive for employees.

Key Dates

Keywords

Magnite, MGNI, Form 4, Insider Transaction, CEO, Stock Forfeiture, Restricted Stock Units, Tax Withholding