Merck & Co., Inc.·4

May 1, 6:32 PM ET

Chattopadhyay Sanat 4

4 · Merck & Co., Inc. · Filed May 1, 2026

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Merck (MRK) Exec VP Sanat Chattopadhyay Receives RSUs $285.7K

What Happened
Sanat Chattopadhyay, Executive Vice President and President of Merck Manufacturing Division, had 2,597 restricted stock units (RSUs) convert into Merck common shares on 2026-04-29, with a reported value of $285,748 (2,597 × $110.03). To satisfy tax withholding/obligations, 1,130 of those shares were withheld (reported as disposed) with a value of $124,334. Net shares retained from this vesting event = 1,467 shares (2,597 vested − 1,130 withheld).

Key Details

  • Transaction date: 2026-04-29; reported on Form 4 filed 2026-05-01 (timely filing).
  • Vesting/conversion: 2,597 RSUs converted to common shares, reported at $110.03/share (total $285,748). (Transaction code M = exercise/conversion of derivative.)
  • Tax withholding/payment: 1,130 shares withheld to cover tax liabilities, valued at $110.03/share (total $124,334). (Code F = payment of exercise price or tax liability.)
  • Net shares retained from this installment: 1,467 shares.
  • Footnotes: F4/F5 confirm these are restricted stock units (each RSU = 1 share) and vest/distribute in three equal installments (4/29/2026, 4/29/2027, 4/29/2028). F1–F3 note the reporting person serves as sole trustee of certain grantor retained annuity trusts.
  • Filing timeliness: No late filing indicated.

Context
This was a routine equity compensation vesting (RSU conversion), not an open-market buy or a deliberate sale for proceeds—only shares were withheld to cover taxes, which is common. For retail investors, purchases signal stronger insider conviction than routine vesting; this filing mainly documents compensation delivery and tax withholding rather than a trading decision.

Insider Transaction Report

Form 4Exit
Period: 2026-04-29
Chattopadhyay Sanat
Exe V-P & Pres. MMD
Transactions
  • Exercise/Conversion

    Common Stock

    2026-04-29$110.03/sh+2,597$285,74816,477 total
  • Tax Payment

    Common Stock

    2026-04-29$110.03/sh1,130$124,33415,347 total
  • Exercise/Conversion

    Restricted Stock Unit

    [F4][F5]
    2026-04-292,5975,194 total
    From: 2026-04-29Exp: 2028-04-29Common Stock (2,597 underlying)
Holdings
  • Common Stock

    [F1]
    (indirect: By GRAT April 2025)
    74,289
  • Common Stock

    [F2]
    (indirect: By GRAT August 2025)
    57,622
  • Common Stock

    [F3]
    (indirect: By GRAT February 2025)
    53,417
Footnotes (5)
  • [F1]The reporting person serves as the sole trustee of, and maintains complete investment control over, the Sanat Chattopadhyay April 2025 Grantor Retained Annuity Trust.
  • [F2]The reporting person serves as the sole trustee of, and maintains complete investment control over, the Sanat Chattopadhyay August 2025 Grantor Retained Annuity Trust.
  • [F3]The reporting person serves as the sole trustee of, and maintains complete investment control over, the Sanat Chattopadhyay February 2025 Grantor Retained Annuity Trust.
  • [F4]Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock.
  • [F5]These restricted stock units vest and are distributed as shares of Merck & Co., Inc. common stock in three equal installments on 4/29/2026, 4/29/2027 and 4/29/2028.
Signature
/s/ Kelly E. W. Grez as Attorney-in-Fact for Sanat Chattopadhyay|2026-05-01

Documents

1 file
  • 4
    form4.xmlPrimary

    PRIMARY DOCUMENT