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Congress Stock Tracker

Tracking congressional stock trades from public STOCK Act Periodic Transaction Reports (PTRs) filed by members of the US House and Senate.

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© 2026 Congress Stock Tracker. Data from public STOCK Act filings.For informational purposes only. Not financial advice.
Stocks
Merck & Co., Inc.

Merck & Co., Inc.MRK

NYSEHealthcarePharmaceuticals$115.62-0.25%

A global pharmaceutical company focused on prescription medicines, vaccines, and biologic therapies, Merck generates a significant share of revenue from its oncology franchise, led by blockbuster immunotherapy Keytruda. The company also maintains a sizable vaccines business and an expanding pipeline in oncology, infectious diseases, and cardiometabolic conditions. Investors monitor patent expiration timelines, clinical trial outcomes, and capital allocation as key drivers of long-term earnings growth.

Market Cap: $285.9B52W Range: $73.31 – $125.14

Congressional Interest in Merck & Co., Inc. (MRK)

13 members of Congress have disclosed 50 trades in Merck & Co., Inc. (MRK), a Healthcare company. The buy/sell breakdown shows 29 purchases versus 21 sales, indicating net buying interest from lawmakers. All data is sourced from STOCK Act periodic transaction reports filed with Congress.

Total Disclosures
50
Unique Politicians
13
Buys
29
Sells
21

Who in Congress Is Trading MRK?

DatePoliticianTypeAmountSecurity
2012-07-08JAMES B. RENACCIsell$27,564.80Stock
2012-05-09Lou Barlettasell$1K – $15KStock

Related

All stocks traded by CongressFull trade feedMost active tradersAbout the STOCK ActReport missing trade
2012-05-04MICHAEL T. MCCAULbuy$1K – $15KStock
2012-05-03Lou Barlettasell$1K – $15KStock
2012-04-12DAVE CAMPsell$1K – $15KStock
2012-04-12DAVE CAMPsell$1K – $15KStock
2012-04-12DAVE CAMPsell$1K – $15KStock
2012-01-11Tom Pricesell$18,893.16Stock
2012-01-10MICHAEL T. MCCAULbuy$15K – $50KStock
2012-01-10MICHAEL T. MCCAULsell$50K – $100KStock
2012-01-10MICHAEL T. MCCAULsell$1K – $15KStock
2012-01-10MICHAEL T. MCCAULbuy$15K – $50KStock
2012-01-04BRAD R. WENSTRUPbuy$1K – $15KStock
2011-11-03Vern Buchananbuy$1K – $15KStock
2011-10-08David P. Roebuy$2,577.94Stock
2011-10-08David P. Roebuy$43,165Stock
2011-10-06Vern Buchananbuy$1K – $15KStock
2011-10-05Vern Buchanansell$1K – $15KStock
2011-09-09Vern Buchananbuy$1K – $15KStock
2011-09-01MICHAEL T. MCCAULbuy$1K – $15KStock
2011-08-07CAROLYN MCCARTHYsell$1,585.35Stock
2011-08-06Vern Buchanansell$1K – $15KStock
2011-08-03MICHAEL T. MCCAULbuy$1K – $15KStock
2011-08-02JAMES B. RENACCIsell$2,891.40Stock
2011-07-09Vern Buchananbuy$1K – $15KStock
2011-06-07JAMES B. RENACCIbuy$1,220.70Stock
2011-03-09HARRY TEAGUEbuy$1K – $15KStock
2011-03-05Vern Buchananbuy$1K – $15KStock
2011-03-02JAMES B. RENACCIsell$2,691.20Stock
2011-01-07JAMES B. RENACCIbuy$1,220.70Stock
2011-01-02NAN A. S. HAYWORTHsell$1K – $15KStock
2010-12-12TREY RADELsell$1K – $15KStock
2010-12-05MICHAEL T. MCCAULsell$1K – $15KStock
2010-11-10Vern Buchananbuy$1K – $15KStock
2010-11-10Vern Buchananbuy$1K – $15KStock
2010-11-05SHELLEY BERKLEYsell$29,270.79Stock
2010-11-03Vern Buchanansell$1K – $15KStock
2010-09-02MICHAEL T. MCCAULbuy$1K – $15KStock
2010-09-02MICHAEL T. MCCAULsell$1K – $15KStock
2010-08-03SHELLEY BERKLEYbuy-721.23Stock
2010-08-02Vern Buchanansell$1K – $15KStock
2010-07-10Vern Buchananbuy$1K – $15KStock
2010-06-12Vern Buchananbuy$1K – $15KStock
2010-06-12Vern Buchananbuy$1K – $15KStock
2010-06-10Vern Buchananbuy$1K – $15KStock
2010-06-04Vern Buchananbuy$1K – $15KStock
2010-05-10Vern Buchananbuy$1K – $15KStock
2010-05-02Vern Buchananbuy$1K – $15KStock
2010-04-10Vern Buchananbuy$1K – $15KStock
2010-04-03Vern Buchananbuy$1K – $15KStock
JAMES B. RENACCIsell
2012-07-08$27,564.80
Stock
Lou Barlettasell
2012-05-09$1K – $15K
Stock
MICHAEL T. MCCAULbuy
2012-05-04$1K – $15K
Stock
Lou Barlettasell
2012-05-03$1K – $15K
Stock
DAVE CAMPsell
2012-04-12$1K – $15K
Stock
DAVE CAMPsell
2012-04-12$1K – $15K
Stock
DAVE CAMPsell
2012-04-12$1K – $15K
Stock
Tom Pricesell
2012-01-11$18,893.16
Stock
MICHAEL T. MCCAULbuy
2012-01-10$15K – $50K
Stock
MICHAEL T. MCCAULsell
2012-01-10$50K – $100K
Stock
MICHAEL T. MCCAULsell
2012-01-10$1K – $15K
Stock
MICHAEL T. MCCAULbuy
2012-01-10$15K – $50K
Stock
BRAD R. WENSTRUPbuy
2012-01-04$1K – $15K
Stock
Vern Buchananbuy
2011-11-03$1K – $15K
Stock
David P. Roebuy
2011-10-08$2,577.94
Stock
David P. Roebuy
2011-10-08$43,165
Stock
Vern Buchananbuy
2011-10-06$1K – $15K
Stock
Vern Buchanansell
2011-10-05$1K – $15K
Stock
Vern Buchananbuy
2011-09-09$1K – $15K
Stock
MICHAEL T. MCCAULbuy
2011-09-01$1K – $15K
Stock
CAROLYN MCCARTHYsell
2011-08-07$1,585.35
Stock
Vern Buchanansell
2011-08-06$1K – $15K
Stock
MICHAEL T. MCCAULbuy
2011-08-03$1K – $15K
Stock
JAMES B. RENACCIsell
2011-08-02$2,891.40
Stock
Vern Buchananbuy
2011-07-09$1K – $15K
Stock
JAMES B. RENACCIbuy
2011-06-07$1,220.70
Stock
HARRY TEAGUEbuy
2011-03-09$1K – $15K
Stock
Vern Buchananbuy
2011-03-05$1K – $15K
Stock
JAMES B. RENACCIsell
2011-03-02$2,691.20
Stock
JAMES B. RENACCIbuy
2011-01-07$1,220.70
Stock
NAN A. S. HAYWORTHsell
2011-01-02$1K – $15K
Stock
TREY RADELsell
2010-12-12$1K – $15K
Stock
MICHAEL T. MCCAULsell
2010-12-05$1K – $15K
Stock
Vern Buchananbuy
2010-11-10$1K – $15K
Stock
Vern Buchananbuy
2010-11-10$1K – $15K
Stock
SHELLEY BERKLEYsell
2010-11-05$29,270.79
Stock
Vern Buchanansell
2010-11-03$1K – $15K
Stock
MICHAEL T. MCCAULbuy
2010-09-02$1K – $15K
Stock
MICHAEL T. MCCAULsell
2010-09-02$1K – $15K
Stock
SHELLEY BERKLEYbuy
2010-08-03-721.23
Stock
Vern Buchanansell
2010-08-02$1K – $15K
Stock
Vern Buchananbuy
2010-07-10$1K – $15K
Stock
Vern Buchananbuy
2010-06-12$1K – $15K
Stock
Vern Buchananbuy
2010-06-12$1K – $15K
Stock
Vern Buchananbuy
2010-06-10$1K – $15K
Stock
Vern Buchananbuy
2010-06-04$1K – $15K
Stock
Vern Buchananbuy
2010-05-10$1K – $15K
Stock
Vern Buchananbuy
2010-05-02$1K – $15K
Stock
Vern Buchananbuy
2010-04-10$1K – $15K
Stock
Vern Buchananbuy
2010-04-03$1K – $15K
Stock
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