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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)

15 members of Congress have disclosed 50 trades in Merck & Co., Inc. (MRK), a Healthcare company. The buy/sell breakdown shows 27 purchases versus 23 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
15
Buys
27
Sells
23

Who in Congress Is Trading MRK?

DatePoliticianTypeAmountSecurity
2020-08-26Tom Malinowskibuy$15K – $50KStock
2020-08-24Tom Malinowskibuy$15K – $50KStock

Related

All stocks traded by CongressFull trade feedMost active tradersAbout the STOCK ActReport missing trade
2020-07-27David P. Roebuy$1K – $15KStock
2020-07-27David P. Roesell$1K – $15KStock
2020-07-02Richard W. Allenbuy$15K – $50KStock
2020-04-16David A Perdue , Jrsell$1K – $15KStock
2020-04-15Lois Frankelbuy$1K – $15KStock
2020-04-14David A Perdue , Jrsell$50K – $100KStock
2020-04-14David A Perdue , Jrsell$15K – $50KStock
2020-04-07Kelly Loefflerbuy$15K – $50KStock
2020-04-07David P. Roebuy$15K – $50KStock
2020-04-06David A Perdue , Jrsell$1K – $15KStock
2020-04-06David P. Roebuy$15K – $50KStock
2020-04-03David A Perdue , Jrsell$15K – $50KStock
2020-03-31David A Perdue , Jrsell$15K – $50KStock
2020-03-30ROBERT J. WITTMANbuy$1K – $15KStock
2020-03-27John Curtisbuy$1K – $15KStock
2020-03-24David P. Roebuy$1K – $15KStock
2020-03-23ZOE LOFGRENsell$1K – $15KStock
2020-03-23MICHAEL T. MCCAULbuy$1K – $15KStock
2020-03-06David P. Roebuy$1K – $15KStock
2020-03-06David P. Roebuy$15K – $50KStock
2020-03-02MICHAEL T. MCCAULsell$1K – $15KStock
2020-02-27MICHAEL T. MCCAULsell$50K – $100KStock
2020-02-21David P. Roebuy$15K – $50KStock
2020-02-21David P. Roebuy$1K – $15KStock
2020-02-20Lois Frankelbuy$1K – $15KStock
2020-02-20Mikie Sherrillsell$1K – $15KStock
2020-02-19Lois Frankelbuy$1K – $15KStock
2020-02-11David P. Roebuy$1K – $15KStock
2020-02-11David P. Roebuy$15K – $50KStock
2020-02-06Mikie Sherrillsell$770+Stock
2020-02-05Kelly Loefflersell$1K – $15KStock
2020-01-17Rohit Khannabuy$1K – $15KStock
2020-01-13Michael John Gallaghersell$1K – $15KStock
2019-12-31MICHAEL T. MCCAULsell$1K – $15KStock
2019-12-12MICHAEL T. MCCAULsell$1K – $15KStock
2019-12-12Rohit Khannasell$1K – $15KStock
2019-11-18Thomas Suozzisell$15K – $50KStock
2019-10-08Rohit Khannabuy$1K – $15KStock
2019-09-27David P. Roebuy$1K – $15KStock
2019-09-13David P. Roebuy$1K – $15KOther
2019-09-12David P. Roebuy$1K – $15KStock
2019-08-27David P. Roebuy$1K – $15KStock
2019-07-30David P. Roesell$1K – $15KStock
2019-07-22Bryan George Steilsell$1K – $15KStock
2019-07-15David P. Roesell$15K – $50KStock
2019-07-12Bryan George Steilsell$1K – $15KStock
2019-06-24David P. Roebuy$1K – $15KStock
2019-04-29MICHAEL T. MCCAULsell$15K – $50KStock
Tom Malinowskibuy
2020-08-26$15K – $50K
Stock
Tom Malinowskibuy
2020-08-24$15K – $50K
Stock
David P. Roebuy
2020-07-27$1K – $15K
Stock
David P. Roesell
2020-07-27$1K – $15K
Stock
Richard W. Allenbuy
2020-07-02$15K – $50K
Stock
David A Perdue , Jrsell
2020-04-16$1K – $15K
Stock
Lois Frankelbuy
2020-04-15$1K – $15K
Stock
David A Perdue , Jrsell
2020-04-14$50K – $100K
Stock
David A Perdue , Jrsell
2020-04-14$15K – $50K
Stock
Kelly Loefflerbuy
2020-04-07$15K – $50K
Stock
David P. Roebuy
2020-04-07$15K – $50K
Stock
David A Perdue , Jrsell
2020-04-06$1K – $15K
Stock
David P. Roebuy
2020-04-06$15K – $50K
Stock
David A Perdue , Jrsell
2020-04-03$15K – $50K
Stock
David A Perdue , Jrsell
2020-03-31$15K – $50K
Stock
ROBERT J. WITTMANbuy
2020-03-30$1K – $15K
Stock
John Curtisbuy
2020-03-27$1K – $15K
Stock
David P. Roebuy
2020-03-24$1K – $15K
Stock
ZOE LOFGRENsell
2020-03-23$1K – $15K
Stock
MICHAEL T. MCCAULbuy
2020-03-23$1K – $15K
Stock
David P. Roebuy
2020-03-06$1K – $15K
Stock
David P. Roebuy
2020-03-06$15K – $50K
Stock
MICHAEL T. MCCAULsell
2020-03-02$1K – $15K
Stock
MICHAEL T. MCCAULsell
2020-02-27$50K – $100K
Stock
David P. Roebuy
2020-02-21$15K – $50K
Stock
David P. Roebuy
2020-02-21$1K – $15K
Stock
Lois Frankelbuy
2020-02-20$1K – $15K
Stock
Mikie Sherrillsell
2020-02-20$1K – $15K
Stock
Lois Frankelbuy
2020-02-19$1K – $15K
Stock
David P. Roebuy
2020-02-11$1K – $15K
Stock
David P. Roebuy
2020-02-11$15K – $50K
Stock
Mikie Sherrillsell
2020-02-06$770+
Stock
Kelly Loefflersell
2020-02-05$1K – $15K
Stock
Rohit Khannabuy
2020-01-17$1K – $15K
Stock
Michael John Gallaghersell
2020-01-13$1K – $15K
Stock
MICHAEL T. MCCAULsell
2019-12-31$1K – $15K
Stock
MICHAEL T. MCCAULsell
2019-12-12$1K – $15K
Stock
Rohit Khannasell
2019-12-12$1K – $15K
Stock
Thomas Suozzisell
2019-11-18$15K – $50K
Stock
Rohit Khannabuy
2019-10-08$1K – $15K
Stock
David P. Roebuy
2019-09-27$1K – $15K
Stock
David P. Roebuy
2019-09-13$1K – $15K
Other
David P. Roebuy
2019-09-12$1K – $15K
Stock
David P. Roebuy
2019-08-27$1K – $15K
Stock
David P. Roesell
2019-07-30$1K – $15K
Stock
Bryan George Steilsell
2019-07-22$1K – $15K
Stock
David P. Roesell
2019-07-15$15K – $50K
Stock
Bryan George Steilsell
2019-07-12$1K – $15K
Stock
David P. Roebuy
2019-06-24$1K – $15K
Stock
MICHAEL T. MCCAULsell
2019-04-29$15K – $50K
Stock
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