Company fact sheet




We are called MSD everywhere outside of the U.S. and Canada. In the U.S. and Canada, we are known as Merck & Co., Inc., Rahway, N.J., USA. The company is listed on the New York Stock Exchange under the symbol “MRK.”


At MSD, known as Merck & Co., Inc., Rahway, NJ, USA in the United States and Canada, we are unified around our purpose: We use the power of leading-edge science to save and improve lives around the world. For more than 130 years, we have brought hope to humanity through the development of important medicines and vaccines. We aspire to be the premier research-intensive biopharmaceutical company in the world – and today, we are at the forefront of research to deliver innovative health solutions that advance the prevention and treatment of diseases in people and animals. We foster a diverse and inclusive global workforce and operate responsibly every day to enable a safe, sustainable and healthy future for all people and communities. 


Approximately 72,000 (as of Dec. 31, 2023)


Rahway, New Jersey, USA


Animal Health

2023 Revenue

$60.1 billion

2023 Revenues

(by geographic area, including pharmaceutical and animal health revenue)

$28.5 BUnited States
$13.3 BEurope, Middle East and Africa
$ 6.8 BChina
$ 3.2 BJapan
$ 3.2 BAsia Pacific (other than Japan and China)
$ 3.1 BLatin America
$ 2.1 BOther

2023 R&D expenses

$30.5 billion


MSD is a global health care company that delivers innovative health solutions through its prescription medicines, vaccines, biologic therapies, and animal health products.


MSD has a robust pipeline, with a wide range of product candidates across each phase of development.

View the pipeline

Senior leadership

Robert M. Davis,  chairman and chief executive officer

View the list of executive committee members