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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
2026-08-05 Maraldo David R. EVP & Pres. MMD Sale −6,311 $128.72 $812K 18,212.43
2026-08-05 Maraldo David R. EVP & Pres. MMD Option exercise +9,709 $87.10 $846K 27,921.43
2026-08-05 Maraldo David R. EVP & Pres. MMD Sale −9,709 $128.72 $1.2M 18,212.43
2026-08-05 Maraldo David R. EVP & Pres. MMD Option exercise +2,686 $84.71 $228K 20,898.43
2026-08-05 Maraldo David R. EVP & Pres. MMD Sale −2,686 $128.72 $346K 18,212.43
2026-08-05 Maraldo David R. EVP & Pres. MMD Option exercise · Stock Option (Right to Buy) −6,311 3,154
2026-08-05 Maraldo David R. EVP & Pres. MMD Option exercise · Stock Option (Right to Buy) −9,709 0
2026-08-05 Maraldo David R. EVP & Pres. MMD Option exercise · Stock Option (Right to Buy) −2,686 5,374
2026-08-05 Williams David Michael EVP,Chief Info&Digital Officer Option exercise +4,600 $77.62 $357K 36,316.04
2026-08-05 Williams David Michael EVP,Chief Info&Digital Officer Sale −4,600 $128.77 $592K 31,716.04
2026-08-05 Williams David Michael EVP,Chief Info&Digital Officer Option exercise +13,542 $75.36 $1.0M 45,258.04
2026-08-05 Williams David Michael EVP,Chief Info&Digital Officer Sale −13,542 $128.77 $1.7M 31,716.04
2026-08-05 Williams David Michael EVP,Chief Info&Digital Officer Option exercise +34,705 $73.73 $2.6M 66,421.04
2026-08-05 Williams David Michael EVP,Chief Info&Digital Officer Sale −34,705 $128.77 $4.5M 31,716.04
2026-08-05 Williams David Michael EVP,Chief Info&Digital Officer Option exercise · Stock Option (Right to Buy) −4,600 0
2026-08-05 Williams David Michael EVP,Chief Info&Digital Officer Option exercise · Stock Option (Right to Buy) −13,542 0
2026-08-05 Williams David Michael EVP,Chief Info&Digital Officer Option exercise · Stock Option (Right to Buy) −34,705 0
2026-06-30 Seidman Christine E Director Grant or award · Phantom Stock +63.23 $128.50 $8K 21,291.27
2026-06-30 Karsanbhai Surendralal Lanca Director Grant or award · Phantom Stock +126.46 $128.50 $16K 5,518.8
2026-06-30 Coe Mary Ellen Director Grant or award · Phantom Stock +233.46 $128.50 $30K 31,999.1

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