Merck & Co., Inc.(MRK)Company Profile & Business
NYSE

Company Profile

Business overview, scale, and footprint

Company NameMerck & Co., Inc.
Ticker SymbolMRK
ExchangeNYQ
SectorHealthcare
IndustryDrug Manufacturers - General
Employees73,000
CEOMr. Robert M. Davis J.D.
Founded1891
HeadquartersRahway, NJ, United States
CountryUnited States
Websitemerck.com
Next Earnings DateOct 29, 2026

Business Overview

Merck & Co., Inc. operates as a healthcare company worldwide. It offers human health pharmaceutical for various areas under the Keytruda, Keytruda Qlex, Welireg, Gardasil, ProQuad, M-M-R II, Varivax, Vaxneuvance, Capvaxive, RotaTeq, Pneumovax 23, Bridion, Prevymis, Dificid, Zerbaxa, Winrevair, Adempas/ Verquvo, Ohtuvayre, Lagevrio, Isentress/Isentress HD, Delstrigo, Pifeltro, Belsomra, Januvia, and Janumet brands. The company also provides veterinary pharmaceuticals, vaccines and health management solutions and services, such as livestock products under the Nuflor, Bovilis/Vista, Bovilis Cryptium, Banamine, Estrumate, Matrix, Resflor, Zuprevo, Revalor, Safe-Guard, M+Pac, Porcilis, Circumvent, Nobilis/Innovax, Paracox and Coccivac, Exzolt, Slice, Imvixa, Clynav, Aquavac/Norvax, Aquaflor, Flexolt brands; Allflex Livestock Intelligence solutions; and companion animal products under the Bravecto One-Month, Bravecto Injectable/Quantum, Bravecto TriUNO, Bravecto Plus, Sentinel Spectrum, Sentinel Flavor Tabs, Numelvi, Optimmune, Nobivac NXT, GilvetMab, Otomax, Mometamax, Mometamax Ultra, Posatex, Caninsulin/Vetsulin, Panacur, Safeguard, Regumate, Prestige, Scalibor/Exspot, Sure Petcare, and Home Again brands. It has development and commercialization agreement for three of Daiichi Sankyo's deruxtecan ADC candidates; AstraZeneca PLC to co-development and co-commercialize AstraZeneca's Lynparza products for multiple cancer types; licensed to develop, manufacture and commercialize LM-299, a novel investigational PD-1/VEGF bispecific antibody from LaNova; and collaboration agreement with Eisai Co., Ltd., Bayer AG, and Ridgeback Biotherapeutics LP, as well Moderna, Inc. Merck & Co., Inc. has strategic collaboration with Infinimmune, Inc. to discover and develop antibodies against multiple therapeutic targets. The company was founded in 1891 and is headquartered in Rahway, New Jersey.

Insider Transactions

Open-market activity and option exercises

Insider Activity Summary

Insider trading activity for Merck & Co., Inc. (MRK) between Aug 5, 2024 and Aug 13, 2026 consists of 90 total transactions. Among these, company executives and board members conducted 73 buys (totaling 1,298,926 shares) and 17 sells (totaling 228,238 shares). This activity resulted in a net change of 1,070,688 shares, reflecting net buying interest with an estimated net sales value of $7.28M.

90 insider transactions found. Showing 10 of 90 transactions.

Show:entries
Insider NameRelation to CompanyShares ChangedPriceTransaction Date
GUINDO CHIRFIOfficer10,000$1.35Aug 13, 2026
Guindo ChirfiEVP, Access, Policy & Comms-10,000$135.00Aug 13, 2026
ZACHARY JENNIFER LGeneral Counsel54,927$6.03Aug 12, 2026
DELUCA RICHARD ROBERT JR.Officer45,320$5.94Aug 12, 2026
ZACHARY JENNIFER LGeneral Counsel80,315$10.72Aug 12, 2026
DeLuca Richard R.EVP&Pres, Merck Animal Heallth-11,099$131.61Aug 12, 2026
DeLuca Richard R.EVP&Pres, Merck Animal Heallth-600$132.04Aug 12, 2026
Zachary JenniferEVP, General Counsel-80,315$133.46Aug 12, 2026
DeLuca Richard R.EVP&Pres, Merck Animal Heallth-7,410$131.33Aug 11, 2026
DeLuca Richard R.EVP&Pres, Merck Animal Heallth-5,427$132.35Aug 11, 2026
Page 1 of 9 (90 total transactions)