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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 manufacturer focused on prescription medicines, vaccines, and biologic therapies, with major franchises in oncology, infectious diseases, and animal health. Its cancer immunotherapy Keytruda is one of the world’s highest‑selling drugs and a primary driver of revenue growth. I...

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

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

21 members of Congress have disclosed 50 trades in Merck & Co., Inc. (MRK), a Healthcare company. The buy/sell breakdown shows 28 purchases versus 22 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
21
Buys
28
Sells
22

Who in Congress Is Trading MRK?

DatePoliticianTypeAmountSecurity
2016-01-14BILLY LONGsell$1K – $15KStock
2015-12-25KENNY MARCHANTbuy$1K – $15KStock

Related

All stocks traded by CongressFull trade feedMost active tradersAbout the STOCK ActReport missing trade
2015-12-14MICHAEL T. MCCAULsell$1K – $15KStock
2015-11-18KATHERINE CLARKsell$15K – $50KStock
2015-10-25KENNY MARCHANTbuy$1K – $15KStock
2015-10-06MICHAEL T. MCCAULsell$15K – $50KStock
2015-10-05Kurt Schradersell$1K – $15KStock
2015-10-02MICHAEL T. MCCAULsell$1K – $15KStock
2015-09-23FRED UPTONsell$1K – $15KStock
2015-09-21DIANE BLACKsell$100K – $250KStock
2015-09-02SCOTT HARVEY PETERSsell$50K – $100KStock
2015-09-02SCOTT HARVEY PETERSsell$50K – $100KStock
2015-08-12James M Inhofebuy$15K – $50KStock
2015-07-27DAVID P. JOYCEbuy$1K – $15KStock
2015-07-10Sheldon Whitehousebuy$1K – $15KStock
2015-07-10SCOTT HARVEY PETERSbuy$15K – $50KStock
2015-07-10SCOTT HARVEY PETERSbuy$15K – $50KStock
2015-07-09James M Inhofebuy$50K – $100KStock
2015-06-26SCOTT HARVEY PETERSbuy$15K – $50KStock
2015-06-23SCOTT HARVEY PETERSbuy$15K – $50KStock
2015-06-16Harold Dallas Rogersbuy$1K – $15KStock
2015-06-01KENNY MARCHANTsell$1K – $15KStock
2015-05-28E. Scott Rigellbuy$1K – $15KStock
2015-05-27Sheldon Whitehousebuy$1K – $15KStock
2015-05-27JAMES B. RENACCIsell$15K – $50KStock
2015-05-14KENNY MARCHANTsell$50K – $100KStock
2015-05-04MICHAEL T. MCCAULbuy$1K – $15KStock
2015-05-01KENNY MARCHANTbuy$15K – $50KStock
2015-04-30MICHAEL T. MCCAULsell$50K – $100KStock
2015-04-16DAN BENISHEKbuy$15K – $50KStock
2015-04-07MICHAEL T. MCCAULsell$50K – $100KStock
2015-04-06MICHAEL T. MCCAULsell$100K – $250KStock
2015-04-06MICHAEL T. MCCAULbuy$50K – $100KStock
2015-04-02KENNY MARCHANTbuy—Stock
2015-03-31JAMES B. RENACCIbuy$15K – $50KStock
2015-03-25MICHAEL T. MCCAULsell$1K – $15KStock
2015-02-06MICHAEL T. MCCAULbuy$1K – $15KStock
2015-01-20John A. Yarmuthbuy$1K – $15KStock
2012-12-10TREY RADELbuy$1K – $15KStock
2012-12-01BRAD R. WENSTRUPbuy$1K – $15KStock
2012-11-06MICHAEL T. MCCAULbuy$15K – $50KStock
2012-11-06MICHAEL T. MCCAULbuy$1K – $15KStock
2012-11-06MICHAEL T. MCCAULbuy$15K – $50KStock
2012-10-09Vern Buchanansell$1K – $15KStock
2012-10-05MICHAEL T. MCCAULbuy$1K – $15KStock
2012-08-02LUIS V. GUTIERREZsell$1K – $15KStock
2012-07-08JAMES B. RENACCIsell$27,564.80Stock
2012-05-09Lou Barlettasell$1K – $15KStock
2012-05-04MICHAEL T. MCCAULbuy$1K – $15KStock
2012-05-03Lou Barlettasell$1K – $15KStock
BILLY LONGsell
2016-01-14$1K – $15K
Stock
KENNY MARCHANTbuy
2015-12-25$1K – $15K
Stock
MICHAEL T. MCCAULsell
2015-12-14$1K – $15K
Stock
KATHERINE CLARKsell
2015-11-18$15K – $50K
Stock
KENNY MARCHANTbuy
2015-10-25$1K – $15K
Stock
MICHAEL T. MCCAULsell
2015-10-06$15K – $50K
Stock
Kurt Schradersell
2015-10-05$1K – $15K
Stock
MICHAEL T. MCCAULsell
2015-10-02$1K – $15K
Stock
FRED UPTONsell
2015-09-23$1K – $15K
Stock
DIANE BLACKsell
2015-09-21$100K – $250K
Stock
SCOTT HARVEY PETERSsell
2015-09-02$50K – $100K
Stock
SCOTT HARVEY PETERSsell
2015-09-02$50K – $100K
Stock
James M Inhofebuy
2015-08-12$15K – $50K
Stock
DAVID P. JOYCEbuy
2015-07-27$1K – $15K
Stock
Sheldon Whitehousebuy
2015-07-10$1K – $15K
Stock
SCOTT HARVEY PETERSbuy
2015-07-10$15K – $50K
Stock
SCOTT HARVEY PETERSbuy
2015-07-10$15K – $50K
Stock
James M Inhofebuy
2015-07-09$50K – $100K
Stock
SCOTT HARVEY PETERSbuy
2015-06-26$15K – $50K
Stock
SCOTT HARVEY PETERSbuy
2015-06-23$15K – $50K
Stock
Harold Dallas Rogersbuy
2015-06-16$1K – $15K
Stock
KENNY MARCHANTsell
2015-06-01$1K – $15K
Stock
E. Scott Rigellbuy
2015-05-28$1K – $15K
Stock
Sheldon Whitehousebuy
2015-05-27$1K – $15K
Stock
JAMES B. RENACCIsell
2015-05-27$15K – $50K
Stock
KENNY MARCHANTsell
2015-05-14$50K – $100K
Stock
MICHAEL T. MCCAULbuy
2015-05-04$1K – $15K
Stock
KENNY MARCHANTbuy
2015-05-01$15K – $50K
Stock
MICHAEL T. MCCAULsell
2015-04-30$50K – $100K
Stock
DAN BENISHEKbuy
2015-04-16$15K – $50K
Stock
MICHAEL T. MCCAULsell
2015-04-07$50K – $100K
Stock
MICHAEL T. MCCAULsell
2015-04-06$100K – $250K
Stock
MICHAEL T. MCCAULbuy
2015-04-06$50K – $100K
Stock
KENNY MARCHANTbuy
2015-04-02—
Stock
JAMES B. RENACCIbuy
2015-03-31$15K – $50K
Stock
MICHAEL T. MCCAULsell
2015-03-25$1K – $15K
Stock
MICHAEL T. MCCAULbuy
2015-02-06$1K – $15K
Stock
John A. Yarmuthbuy
2015-01-20$1K – $15K
Stock
TREY RADELbuy
2012-12-10$1K – $15K
Stock
BRAD R. WENSTRUPbuy
2012-12-01$1K – $15K
Stock
MICHAEL T. MCCAULbuy
2012-11-06$15K – $50K
Stock
MICHAEL T. MCCAULbuy
2012-11-06$1K – $15K
Stock
MICHAEL T. MCCAULbuy
2012-11-06$15K – $50K
Stock
Vern Buchanansell
2012-10-09$1K – $15K
Stock
MICHAEL T. MCCAULbuy
2012-10-05$1K – $15K
Stock
LUIS V. GUTIERREZsell
2012-08-02$1K – $15K
Stock
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
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