Form 4: Magnite CFO Executes Pre-Planned Stock Option Exercise and Sale

Magnite, Inc.'s Chief Financial Officer, David Day, exercised employee stock options and subsequently sold the acquired common stock on June 18, 2025, under a Rule 10b5-1 trading plan.

Summary

• David Day, the Chief Financial Officer of Magnite, Inc. (MGNI), completed two transactions on June 18, 2025, involving the company's common stock.
• He exercised employee stock options to acquire 38,146 shares of common stock at an exercise price of $4.92 per share.
• Immediately following the exercise, Mr. Day sold all 38,146 shares of common stock at a price of $18.95 per share.
• Both transactions were executed pursuant to a pre-arranged Rule 10b5-1 trading plan, which was adopted on March 13, 2025.
• After these reported transactions, Mr. Day's direct beneficial ownership of Magnite common stock is 443,528 shares.
• The exercised stock options were granted as compensation for services, with 25% vesting on February 1, 2020, and the remainder vesting in 36 equal monthly installments thereafter, with an expiration date of February 20, 2029.

Sentiment

Score: 6

Explanation: The transaction is a routine insider sale under a 10b5-1 plan, which is generally neutral. The fact that the CFO is selling shares could be seen slightly negatively, but the pre-planned nature mitigates concerns. The significant profit from option exercise is a positive for the individual.

Positives

• The transactions were conducted under a Rule 10b5-1 trading plan, indicating a pre-scheduled and transparent sale, which can mitigate concerns about insider trading based on non-public information.
• The sale price of $18.95 per share is significantly higher than the exercise price of $4.92, demonstrating a substantial profit for the CFO from the exercised options.

Negatives

• The sale of shares by a Chief Financial Officer, even under a 10b5-1 plan, could be interpreted by some investors as a reduction in management's direct equity stake in the company.

Future Outlook

This Form 4 filing does not contain any forward-looking statements or guidance regarding Magnite's future performance or outlook, as it solely reports an insider's stock transactions.

Management Comments

• The reported transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 13, 2025.
• The employee stock options were granted as compensation for services.

Industry Context

This Form 4 filing details a routine insider transaction, which is a standard disclosure for publicly traded companies. It does not provide broader industry context or trends, but rather reflects an individual executive's pre-planned equity management.

Comparison to Industry Standards

• This document reports an insider transaction (Form 4) and does not contain information suitable for comparison to industry-specific financial benchmarks or competitor performance. Insider transactions are standard disclosures across all publicly traded companies.

Stakeholder Impact

• Shareholders: The sale by a CFO might be viewed with slight caution, but the pre-arranged 10b5-1 plan mitigates concerns about opportunistic selling. The overall impact on share price is likely minimal unless it signals a broader trend.
• Employees: The exercise of options granted as compensation is a standard part of employee equity programs, reflecting the realization of value from long-term incentives.

Key Dates

Recommendation

Keywords

Magnite, MGNI, Form 4, Insider Transaction, Stock Options, Rule 10b5-1, CFO, Stock Sale, Beneficial Ownership