InsiderTrades

Form 4 for MRK Merck & Co.

Accepted 2026-05-01 18:20:21 ET · period of report 2026-04-29 · accession 0000310158-26-000096 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X Filed Traded Ticker Insider Title Type Price Qty Owned ΔOwn Value
D 2026-05-01 18:20 2026-04-29 MRK DeLuca Richard R. EVP, Pres, Merck Animal Heallth M - OptEx $110.03 +2,518 162.8K +2% +$277.1K
D 2026-05-01 18:20 2026-04-29 MRK DeLuca Richard R. EVP, Pres, Merck Animal Heallth F - Tax $110.03 -1,241 161.5K -0.8% -$136.5K
D 2026-05-01 18:20 2026-04-29 MRK DeLuca Richard R. EVP, Pres, Merck Animal Heallth M - OptEx $0.00 -2,518 5,037 -33% $0

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock 2026-04-29 M A 2,518 $110.03 162,778.07 D — — (F1) Holdings include shares acquired in dividend reinvestment transactions.
2 Common Common Stock 2026-04-29 F D 1,241 $110.03 161,537.07 D — —
3 Derivative Restricted Stock Unit 2026-04-29 M D 2,518 $0.00 5,037 D — · 2026-04-29 to 2028-04-29 2,518 Common Stock (F2) Each restricted stock unit represents a contingent right to receive one share of Merck & Co., Inc. common stock. (F3) 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.