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Company > Leadership > Executive team

Executive team

Our executive team manages the day-to-day operations of our company. Our leaders come from all areas of the business to help position us to succeed.

Photo of Robert M. Davis

Robert M. Davis

Chairman and chief executive officer

Photo of Sanat Chattopadhyay

Sanat Chattopadhyay

Executive vice president and president, Merck Manufacturing Division

Photo of Richard R. DeLuca, Jr.

Richard R. DeLuca, Jr.

Executive vice president and president, Merck Animal Health

Photo of Cristal N. Downing

Cristal N. Downing

Executive vice president and chief communications & public affairs officer

Photo of Chirfi Guindo

Chirfi Guindo

Chief marketing officer, Human Health

Photo of Michael A. Klobuchar

Michael A. Klobuchar

Executive vice president and chief strategy officer

Photo of Dean Y. Li, M.D., Ph.D.

Dean Y. Li, M.D., Ph.D.

Executive vice president and president, Merck Research Laboratories

Photo of Caroline Litchfield

Caroline Litchfield

Executive vice president and chief financial officer

Photo of Steven C. Mizell

Steven C. Mizell

Executive vice president and chief human resources officer​

Photo of Jannie Oosthuizen

Jannie Oosthuizen

President, Merck Human Health U.S.

Photo of Joseph Romanelli

Joseph Romanelli

President, Human Health International

Photo of Dave Williams

Dave Williams

Executive vice president, chief information & digital officer

Photo of Jennifer Zachary

Jennifer Zachary

Executive vice president and general counsel


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Our leadership team

Meet the leaders who guide our purpose to use the power of leading-edge science to save and improve lives around the world.

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Our workforce represents the people we serve

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Forward-looking statement of Merck & Co., Inc., Rahway, N.J., USA

This news release of Merck & Co., Inc., Rahway, N.J., USA (the “company”) includes “forward-looking statements” within the meaning of the safe harbor provisions of the U.S. Private Securities Litigation Reform Act of 1995. These statements are based upon the current beliefs and expectations of the company’s management and are subject to significant risks and uncertainties. There can be no guarantees with respect to pipeline candidates that the candidates will receive the necessary regulatory approvals or that they will prove to be commercially successful. If underlying assumptions prove inaccurate or risks or uncertainties materialize, actual results may differ materially from those set forth in the forward-looking statements.

Risks and uncertainties include but are not limited to, general industry conditions and competition; general economic factors, including interest rate and currency exchange rate fluctuations; the impact of the recent global outbreak of novel coronavirus disease (COVID-19); the impact of pharmaceutical industry regulation and health care legislation in the United States and internationally; global trends toward health care cost containment; technological advances, new products and patents attained by competitors; challenges inherent in new product development, including obtaining regulatory approval; the company’s ability to accurately predict future market conditions; manufacturing difficulties or delays; financial instability of international economies and sovereign risk; dependence on the effectiveness of the company’s patents and other protections for innovative products; and the exposure to litigation, including patent litigation, and/or regulatory actions.

The company undertakes no obligation to publicly update any forward-looking statement, whether as a result of new information, future events or otherwise. Additional factors that could cause results to differ materially from those described in the forward-looking statements can be found in the company’s 2021 Annual Report on Form 10-K and the company’s other filings with the Securities and Exchange Commission (SEC) available at the SEC’s Internet site (www.sec.gov).

No Duty to Update
The information contained in this website was current as of the date presented. The company assumes no duty to update the information to reflect subsequent developments. Consequently, the company will not update the information contained in the website and investors should not rely upon the information as current or accurate after the presentation date.

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