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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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Data

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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)

13 members of Congress have disclosed 40 trades in Merck & Co., Inc. (MRK), a Healthcare company. The buy/sell breakdown shows 24 purchases versus 15 sales, indicating net buying interest from lawmakers. All data is sourced from STOCK Act periodic transaction reports filed with Congress.

Total Disclosures
40
Unique Politicians
13
Buys
24
Sells
15

Who in Congress Is Trading MRK?

DatePoliticianTypeAmountSecurity
2015-11-18Katherine M. Clarksell$15K – $50KStock
2015-10-06MICHAEL T. MCCAULsell$15K – $50KStock

Related

All stocks traded by CongressFull trade feedMost active tradersAbout the STOCK ActReport missing trade
2015-09-21DIANE BLACKsell$250K – $500KStock
2015-09-02Scott H. Peterssell$50K – $100KStock
2015-09-02Scott H. 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 H. Petersbuy$15K – $50KStock
2015-07-10Scott H. Petersbuy$15K – $50KStock
2015-07-09James M Inhofebuy$50K – $100KStock
2015-06-26Scott H. Petersbuy$15K – $50KStock
2015-06-23Scott H. Petersbuy$15K – $50KStock
2015-06-04MICHAEL T. MCCAULsell$100K – $250KStock
2015-05-31JAMES B. RENACCIbuy$15K – $50KStock
2015-05-27Sheldon Whitehousebuy$1K – $15KStock
2015-04-02KENNY MARCHANTbuy$1K – $15KStock
2015-04-02KENNY MARCHANTbuy$1K – $15KStock
2015-03-25MICHAEL T. MCCAULexchange$15K – $50KStock
2015-03-25MICHAEL T. MCCAULsell$15K – $50KStock
2014-12-10Lois Frankelbuy$1K – $15KStock
2014-10-28Katherine M. Clarksell$1K – $15KStock
2014-10-13Virginia Foxxsell$50K – $100KStock
2014-09-22Lois Frankelbuy$1K – $15KStock
2014-09-03Lois Frankelbuy$1K – $15KStock
2014-08-26Katherine M. Clarkbuy$1K – $15KStock
2014-08-20Lois Frankelbuy$1K – $15KStock
2014-08-14Katherine M. Clarkbuy$1K – $15KStock
2014-08-13Lois Frankelbuy$1K – $15KStock
2014-07-14MICHAEL T. MCCAULsell$15K – $50KStock
2014-07-04MICHAEL T. MCCAULsell$15K – $50KStock
2014-06-30JOHN K. DELANEYsell$1K – $15KStock
2014-06-30JOHN K. DELANEYsell$1K – $15KStock
2014-06-12Lois Frankelsell$1K – $15KStock
2014-04-29Lois Frankelbuy$1K – $15KStock
2014-04-24Lois Frankelbuy$1K – $15KStock
2014-03-19MICHAEL T. MCCAULsell$1K – $15KStock
2014-02-27Katherine M. Clarkbuy$1K – $15KStock
2014-02-07John A. Boehnerbuy$15K – $50KStock
2014-01-23Katherine M. Clarkbuy$1K – $15KStock
Katherine M. Clarksell
2015-11-18$15K – $50K
Stock
MICHAEL T. MCCAULsell
2015-10-06$15K – $50K
Stock
DIANE BLACKsell
2015-09-21$250K – $500K
Stock
Scott H. Peterssell
2015-09-02$50K – $100K
Stock
Scott H. 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 H. Petersbuy
2015-07-10$15K – $50K
Stock
Scott H. Petersbuy
2015-07-10$15K – $50K
Stock
James M Inhofebuy
2015-07-09$50K – $100K
Stock
Scott H. Petersbuy
2015-06-26$15K – $50K
Stock
Scott H. Petersbuy
2015-06-23$15K – $50K
Stock
MICHAEL T. MCCAULsell
2015-06-04$100K – $250K
Stock
JAMES B. RENACCIbuy
2015-05-31$15K – $50K
Stock
Sheldon Whitehousebuy
2015-05-27$1K – $15K
Stock
KENNY MARCHANTbuy
2015-04-02$1K – $15K
Stock
KENNY MARCHANTbuy
2015-04-02$1K – $15K
Stock
MICHAEL T. MCCAULexchange
2015-03-25$15K – $50K
Stock
MICHAEL T. MCCAULsell
2015-03-25$15K – $50K
Stock
Lois Frankelbuy
2014-12-10$1K – $15K
Stock
Katherine M. Clarksell
2014-10-28$1K – $15K
Stock
Virginia Foxxsell
2014-10-13$50K – $100K
Stock
Lois Frankelbuy
2014-09-22$1K – $15K
Stock
Lois Frankelbuy
2014-09-03$1K – $15K
Stock
Katherine M. Clarkbuy
2014-08-26$1K – $15K
Stock
Lois Frankelbuy
2014-08-20$1K – $15K
Stock
Katherine M. Clarkbuy
2014-08-14$1K – $15K
Stock
Lois Frankelbuy
2014-08-13$1K – $15K
Stock
MICHAEL T. MCCAULsell
2014-07-14$15K – $50K
Stock
MICHAEL T. MCCAULsell
2014-07-04$15K – $50K
Stock
JOHN K. DELANEYsell
2014-06-30$1K – $15K
Stock
JOHN K. DELANEYsell
2014-06-30$1K – $15K
Stock
Lois Frankelsell
2014-06-12$1K – $15K
Stock
Lois Frankelbuy
2014-04-29$1K – $15K
Stock
Lois Frankelbuy
2014-04-24$1K – $15K
Stock
MICHAEL T. MCCAULsell
2014-03-19$1K – $15K
Stock
Katherine M. Clarkbuy
2014-02-27$1K – $15K
Stock
John A. Boehnerbuy
2014-02-07$15K – $50K
Stock
Katherine M. Clarkbuy
2014-01-23$1K – $15K
Stock
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