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CIK 0000310158 · Large accelerated filer

Merck & Co., Inc.

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Ticker
MRK
Exchange
NYSE
Industry
Pharmaceutical Preparations
FY end
Dec 31
Incorporated
NJ
Entity type
operating
EIN
221918501
Phone
908-740-4000
Business address
126 EAST LINCOLN AVENUE, P.O. BOX 2000, RAHWAY, NJ, 07065
Former names
Merck & Co. Inc., SCHERING PLOUGH CORP
Open-market buys, last 90 days
$0
in 0 filings
Open-market sales, last 90 days
$0
in 0 filings

Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.

Reading 100 more Form 4s from the SEC; this list fills in as they're read.

Date Insider Transaction Shares Price Value Owned after
2026-04-29 Williams David Michael EVP,Chief Info&Digital Officer Option exercise · Restricted Stock Unit −1,377 2,755
2026-04-29 Smart Dalton E. III SVP Fin. - Global Controller Option exercise +944 $110.03 $104K 9,156.32
2026-04-29 Smart Dalton E. III SVP Fin. - Global Controller Shares withheld for taxes −324 $110.03 $36K 8,832.32
2026-04-29 Smart Dalton E. III SVP Fin. - Global Controller Option exercise · Restricted Stock Unit −944 1,889
2026-04-29 Li Dean Y Executive VP & President, MRL Option exercise +4,722 $110.03 $520K 96,757.05
2026-04-29 Li Dean Y Executive VP & President, MRL Shares withheld for taxes −2,326 $110.03 $256K 94,431.05
2026-04-29 Li Dean Y Executive VP & President, MRL Option exercise · Restricted Stock Unit −4,722 9,444
2026-04-29 Zachary Jennifer EVP, General Counsel Option exercise +2,951 $110.03 $325K 72,351.25
2026-04-29 Zachary Jennifer EVP, General Counsel Shares withheld for taxes −1,454 $110.03 $160K 70,897.25
2026-04-29 Zachary Jennifer EVP, General Counsel Option exercise · Restricted Stock Unit −2,951 5,903
2026-04-29 Larson Betty D EVP, Chief HR Officer Option exercise +2,085 $110.03 $229K 8,282
2026-04-29 Larson Betty D EVP, Chief HR Officer Shares withheld for taxes −715 $110.03 $79K 7,567
2026-04-29 Larson Betty D EVP, Chief HR Officer Option exercise · Restricted Stock Unit −2,085 4,172
2026-04-29 Litchfield Caroline EVP & CFO Option exercise +3,935 $110.03 $433K 94,238.66
2026-04-29 Litchfield Caroline EVP & CFO Shares withheld for taxes −1,938 $110.03 $213K 92,300.66
2026-04-29 Litchfield Caroline EVP & CFO Option exercise · Restricted Stock Unit −3,935 7,870
2026-04-29 Davis Robert M Chairman, CEO & President Option exercise +13,300 $110.03 $1.5M 456,901.76
2026-04-29 Davis Robert M Chairman, CEO & President Shares withheld for taxes −6,551 $110.03 $721K 450,350.76
2026-04-29 Davis Robert M Chairman, CEO & President Option exercise · Restricted Stock Unit −13,300 26,601
2026-04-29 Oosthuizen Johannes Jacobus EVP, Oncology & Int?l Option exercise +1,377 $110.03 $152K 22,574.39

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