Form 4: Merck Director Stephen Mayo Acquires Over 2,800 Phantom Stock Units

Merck & Co., Inc. Director Stephen Mayo acquired 2,863.0921 phantom stock units on May 30, 2025, increasing his total beneficial ownership of phantom stock to 12,539.8325 units.

Summary

• Stephen Mayo, a Director of Merck & Co., Inc. (MRK), acquired 2,863.0921 phantom stock units.
• The transaction occurred on May 30, 2025.
• Each phantom stock unit is convertible on a 1-for-1 basis into common stock.
• The phantom stock units were valued at $76.84 per unit for this transaction.
• These units are to be settled 100% in cash upon Mr. Mayo's termination of service, as per the Plan for Deferred Payment of Directors' Compensation.
• Following this acquisition, Mr. Mayo's total beneficial ownership of phantom stock units is 12,539.8325.
• His direct beneficial ownership of common stock is 100 shares.
• Total holdings include shares acquired through dividend reinvestment transactions.

Sentiment

Score: 7

Explanation: The acquisition of phantom stock units by a director, especially as part of a deferred compensation plan, generally indicates alignment of interests and confidence, though it's a routine compensation event rather than a strategic investment.

Positives

• Director Stephen Mayo increased his beneficial ownership in the company through the acquisition of 2,863.0921 phantom stock units.
• The phantom stock units are part of a deferred compensation plan, aligning director incentives with long-term company performance.

Risks

• The phantom stock units are settled 100% in cash upon termination of service, rather than direct equity, which may affect the direct equity exposure of the director.

Future Outlook

NA

Industry Context

This filing reflects an individual director's compensation and ownership structure within the pharmaceutical industry, rather than a broader industry trend.

Corporate Governance

Related Party Transactions

• The acquisition of phantom stock units by Director Stephen Mayo from Merck & Co., Inc. is a related party transaction, consistent with the company's Plan for Deferred Payment of Directors' Compensation.

Stakeholder Impact

• Shareholders: Increased alignment of a director's interests with shareholder value through equity-linked compensation.

Next Steps

• Phantom stock units are to be settled 100% in cash upon the reporting person's termination of service, in accordance with the elected distribution schedule.

Key Dates

Keywords

Merck, MRK, Stephen Mayo, Director, Phantom Stock, Insider Transaction, SEC Form 4, Beneficial Ownership, Deferred Compensation