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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
2026-01-26 Litchfield Caroline EVP & CFO Grant or award +15,852 $107.40 $1.7M 90,192.19
2026-01-26 Li Dean Y Executive VP & President, MRL Grant or award +20,469 $107.40 $2.2M 102,270.05
2026-01-26 Guindo Chirfi Chief Marketing Officer Grant or award +9,865 $107.40 $1.1M 100,615.13
2026-01-26 DeLuca Richard R. EVP&Pres, Merck Animal Heallth Grant or award +12,264 $107.40 $1.3M 197,858.83
2026-01-26 Davis Robert M Chairman, CEO & President Grant or award +47,434 $107.40 $5.1M 491,035.76
2026-01-26 Chattopadhyay Sanat Exe V-P & Pres. MMD Grant or award +13,880 $107.40 $1.5M 13,880
2025-12-31 Seidman Christine E Director Grant or award · Phantom Stock +77.19 $105.26 $8K 19,025.67
2025-12-31 GLOCER THOMAS H Director Grant or award · Phantom Stock +463.14 $105.26 $49K 107,075.67
2025-12-31 Coe Mary Ellen Director Grant or award · Phantom Stock +285.01 $105.26 $30K 29,231.57
2025-11-10 Downing Cristal N Chief Comm. & Public Afrs Ofcr Sale −7,085 $87.00 $616K 0
2025-11-03 Williams David Michael EVP,Chief Info&Digital Officer Sale −8,614 $83.59 $720K 24,578.03
2025-09-30 Seidman Christine E Director Grant or award · Phantom Stock +96.81 $83.93 $8K 18,775.78
2025-09-30 GLOCER THOMAS H Director Grant or award · Phantom Stock +580.84 $83.93 $49K 105,645.9
2025-09-30 Coe Mary Ellen Director Grant or award · Phantom Stock +357.44 $83.93 $30K 28,684.66
2025-08-04 Williams David Michael EVP,Chief Info&Digital Officer Option exercise +17,119 $79.29 $1.4M 41,445.47
2025-08-04 Williams David Michael EVP,Chief Info&Digital Officer Shares withheld for taxes −8,432 $79.29 $669K 33,013.47
2025-08-04 Williams David Michael EVP,Chief Info&Digital Officer Option exercise · Restricted Stock Unit −17,119 0
2025-08-04 Guindo Chirfi Chief Marketing Officer Option exercise +36,903 $79.29 $2.9M 107,408.97
2025-08-04 Guindo Chirfi Chief Marketing Officer Shares withheld for taxes −18,175 $79.29 $1.4M 89,233.97
2025-08-04 Guindo Chirfi Chief Marketing Officer Option exercise · Restricted Stock Unit −36,903 0

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