Maraldo David R. 4

What Happened
David R. Maraldo, EVP & President, Merck Manufacturing Division, had restricted stock units (RSUs) vest on 2026-05-02 and converted those RSUs into 552 shares of Merck common stock (gross value $61,912 at $112.16/share). To cover tax withholding, 159 of those shares were surrendered (value $17,833), leaving a net 393 shares retained (net value ≈ $44,079). This transaction is the conversion/vesting of an award, not an open-market buy or sell.

Key Details

• Transaction date: 2026-05-02; filing date: 2026-05-05 (Form 4 accession 0000310158-26-000113).
• Price/value used: $112.16 per share.
• Gross shares converted: 552 shares (gross value $61,912).
• Shares withheld for taxes: 159 shares (value $17,833).
• Net shares received: 393 shares (net value ≈ $44,079).
• Transaction codes: M = exercise/conversion of derivative (RSU conversion); F = payment of exercise price/tax withholding.
• Footnotes: F1—each RSU converts to one Merck share; F2—these RSUs vest/distribute in three equal installments (5/2/2024, 5/2/2025, 5/2/2026).
• Shares owned after the transaction: not provided in the supplied data.

Context
This was a routine equity compensation event (RSU vesting and conversion). The separate entries reflect (a) conversion of the derivative RSU into shares and (b) withholding of a portion of those shares to satisfy tax obligations. No open-market sale or purchase of additional shares was reported in this filing.