Congress WatchMRK stock trades by members of Congress
Merck & Company, Inc. Common Stock: 59 members of Congress disclosed 185 transactions between 2014-03-04 and 2026-10-07, 93 purchases and 92 sales.
185transactions
93purchases
92sales
59politicians
Activity by year
Transactions by the year the report was filed.
MRK price and Congress trades
Daily closing price (split-adjusted). Dots mark days members of Congress filed trades in MRK: green when more were purchases, red when more were sales. Use + and − (or Ctrl/⌘ + scroll) to zoom and drag to pan. Hover a month in the heatmap below to highlight it here, or click it to zoom to that month.
Congress buying and selling by month
Purchases and sales of MRK reported by members of the House and Senate.
Green months had more purchases, red months more sales, teal an even split; darker means more trades. Months are by filing date. Senate filings after August 2026 and scanned House filings are not fully covered, so early years can look quieter than they were.
Who traded MRK
| Politician | Trades | Buys | Sales | Last filing |
|---|---|---|---|---|
| Lois Frankel | 23 | 13 | 10 | 2023-10-10 |
| Jared Moskowitz | 9 | 6 | 3 | 2025-02-10 |
| Katherine M. Clark | 9 | 6 | 3 | 2021-10-14 |
| Gilbert Cisneros | 8 | 5 | 3 | 2026-01-12 |
| Kathy Manning | 7 | 6 | 1 | 2024-08-16 |
| Scott H. Peters | 6 | 4 | 2 | 2015-09-12 |
| Sheldon Whitehouse | 6 | 5 | 1 | 2017-12-11 |
| Shelley M Capito | 5 | 1 | 4 | 2019-05-09 |
| Richard W. Allen | 5 | 2 | 3 | 2023-08-10 |
| Julie Johnson | 5 | 2 | 3 | 2026-01-15 |
| Daniel Goldman | 5 | 2 | 3 | 2023-08-13 |
| Tom Malinowski | 4 | 2 | 2 | 2021-08-26 |
| Zoe Lofgren | 4 | 2 | 2 | 2023-06-06 |
| Virginia Foxx | 4 | 2 | 2 | 2017-12-12 |
| Alan S. Lowenthal | 4 | 2 | 2 | 2018-01-09 |
| Josh Gottheimer | 4 | 1 | 3 | 2026-03-16 |
| John A. Yarmuth | 3 | 2 | 1 | 2017-12-12 |
| Mikie Sherrill | 3 | 0 | 3 | 2020-04-05 |
| Peter Meijer | 3 | 1 | 2 | 2021-02-23 |
| Marjorie Taylor Greene | 3 | 3 | 0 | 2025-08-29 |
| Rob Bresnahan | 3 | 1 | 2 | 2025-05-31 |
| Thomas Suozzi | 3 | 1 | 2 | 2022-12-19 |
| Thomas H Tuberville | 3 | 1 | 2 | 2023-11-16 |
| Patty Murray | 2 | 1 | 1 | 2017-06-22 |
| John Hoeven | 2 | 1 | 1 | 2017-01-25 |
Disclosed transactions
Download all transactions as CSV
| Filed | Traded | Politician | Type | Amount | Filing |
|---|---|---|---|---|---|
| 2021-07-09 | 2020-08-24 | Tom Malinowski | Buy | $15,001 - c $50,000 | Source |
| 2021-07-09 | 2020-11-04 | Tom Malinowski | Sale | $15,001 - c $50,000 | Source |
| 2021-05-28 | 2021-04-09 | Sara Jacobs | Sale | $50,001 - e $100,000 | Source |
| 2021-04-27 | 2021-03-17 | William R. Keating | Buy | $1,001 - $15,000 f | Source |
| 2021-04-06 | 2021-03-10 | Richard W. Allen | Sale | $15,001 - b $50,000 | Source |
| 2021-03-05 | 2020-11-06 | Tom Malinowski | Sale | $15,001 - c $50,000 | Source |
| 2021-02-23 | 2021-01-28 | Peter Meijer | Sale | $1,001 - $15,000 g | Source |
| 2021-02-23 | 2021-01-28 | Peter Meijer | Sale | $1,001 - $15,000 g | Source |
| 2021-02-23 | 2021-01-13 | Peter Meijer | Buy | $1,001 - $15,000 g | Source |
| 2020-10-22 | 2020-10-07 | Lois Frankel | Buy | $1,001 - $15,000 c | Source |
| 2020-10-22 | 2020-09-23 | Lois Frankel | Buy | $1,001 - $15,000 c | Source |
| 2020-08-18 | 2020-07-02 | Richard W. Allen | Buy | $15,001 - g $50,000 | Source |
| 2020-04-27 | 2020-04-15 | Lois Frankel | Buy | $1,001 - $15,000 e | Source |
| 2020-04-13 | 2020-03-30 | Robert J. Wittman | Buy | $1,001 - $15,000 c | Source |
| 2020-04-11 | 2020-03-23 | Zoe Lofgren | Sale | $1,001 - $15,000 c | Source |
| 2020-04-09 | 2020-03-27 | John Curtis | Buy | $1,001 - $15,000 g | Source |
| 2020-04-05 | 2020-02-20 | Mikie Sherrill | Sale | $1,001 - $15,000 b | Source |
| 2020-03-23 | 2020-02-06 | Mikie Sherrill | Sale | $770.32 g | Source |
| 2020-03-23 | 2020-02-20 | Lois Frankel | Buy | $1,001 - $15,000 g | Source |
| 2020-03-23 | 2020-02-19 | Lois Frankel | Buy | $1,001 - $15,000 g | Source |
| 2020-02-08 | 2020-01-13 | Michael John Gallagher | Sale | $1,001 - $15,000 b | Source |
| 2019-07-22 | 2019-07-12 | Bryan George Steil | Sale | $1,001 - b $15,000 | Source |
| 2019-07-22 | 2019-07-22 | Bryan George Steil | Sale | $1,001 - $15,000 e | Source |
| 2019-05-15 | 2019-04-18 | Mikie Sherrill | Sale | $1,001 - $15,000 c | Source |
| 2019-05-09 | 2018-01-04 | Shelley M Capito | Sale | $1,001 - $15,000 | Source |
| 2019-05-09 | 2018-01-04 | Shelley M Capito | Sale | $1,001 - $15,000 | Source |
| 2019-05-08 | 2018-03-29 | David P. Joyce | Sale | $1,001 - $15,000 e | Source |
| 2019-04-15 | 2019-03-25 | Nicholas Van Taylor | Sale | $1,001 - $15,000 c | Source |
| 2018-08-20 | 2017-07-17 | John Rutherford | Buy | $1,001 - $15,000 c | Source |
| 2018-07-10 | 2018-06-04 | Susan M Collins | Buy | $1,001 - $15,000 | Source |
| 2018-02-10 | 2018-01-04 | Shelley M Capito | Sale | $1,001 - $15,000 | Source |
| 2018-01-09 | 2018-01-08 | Alan S. Lowenthal | Sale | $567.58 | Source |
| 2018-01-04 | 2017-12-15 | Greg Gianforte | Sale | $15,001 - $50,000 | Source |
| 2017-12-12 | 2017-11-21 | Virginia Foxx | Sale | $15,001 - $50,000 | Source |
| 2017-12-12 | 2017-11-09 | John A. Yarmuth | Buy | $1,001 - $15,000 | Source |
| 2017-12-11 | 2017-11-27 | Sheldon Whitehouse | Sale | $15,001 - $50,000 | Source |
| 2017-11-22 | 2017-11-08 | Alan S. Lowenthal | Sale | $15,001 - $50,000 | Source |
| 2017-11-08 | 2017-10-11 | Virginia Foxx | Buy | $1,001 - $15,000 | Source |
| 2017-11-07 | 2017-10-26 | Shelley M Capito | Partial sale | $1,001 - $15,000 | Source |
| 2017-10-16 | 2017-09-05 | Shelley M Capito | Buy | $1,001 - $15,000 | Source |
| 2017-07-18 | 2017-06-15 | Zoe Lofgren | Buy | $1,001 - $15,000 | Source |
| 2017-06-22 | 2017-06-15 | Patty Murray | Sale | $1,001 - $15,000 | Source |
| 2017-05-01 | 2017-03-16 | Lois Frankel | Sale | $1,001 - $15,000 | Source |
| 2017-04-11 | 2017-03-17 | Virginia Foxx | Buy | $15,001 - $50,000 | Source |
| 2017-03-27 | 2017-03-22 | Lois Frankel | Sale | $1,001 - $15,000 | Source |
| 2017-03-27 | 2017-03-08 | Lois Frankel | Sale | $1,001 - $15,000 | Source |
| 2017-03-21 | 2017-03-16 | Patty Murray | Buy | $1,001 - $15,000 | Source |
| 2017-02-15 | 2017-02-14 | Kathy Castor | Sale | $1,001 - $15,000 | Source |
| 2017-01-25 | 2017-01-25 | John Hoeven | Sale | $50,001 - $100,000 | Source |
| 2016-09-28 | 2016-08-17 | Lois Frankel | Sale | $1,001 - $15,000 | Source |
| 2016-08-11 | 2016-01-14 | Sheldon Whitehouse | Buy | $1,001 - $15,000 | Source |
| 2016-04-28 | 2016-03-16 | E. Scott Rigell | Buy | $15,001 - $50,000 | Source |
| 2016-03-18 | 2016-02-12 | Kathy Castor | Buy | $1,001 - $15,000 | Source |
| 2016-02-12 | 2016-01-21 | Alan S. Lowenthal | Buy | $15,001 - $50,000 | Source |
| 2016-02-08 | 2016-01-28 | John Hoeven | Buy | $50,001 - $100,000 | Source |
| 2016-01-25 | 2016-01-21 | Alan S. Lowenthal | Buy | $15,001 - $50,000 | Source |
| 2016-01-20 | 2016-01-14 | Sheldon Whitehouse | Buy | $1,001 - $15,000 | Source |
| 2015-12-08 | 2015-11-18 | Katherine M. Clark | Sale | $15,001 - $50,000 | Source |
| 2015-09-12 | 2015-09-02 | Scott H. Peters | Sale | $50,001 - $100,000 | Source |
| 2015-09-12 | 2015-09-02 | Scott H. Peters | Sale | $50,001 - $100,000 | Source |
| 2015-08-16 | 2015-07-10 | Scott H. Peters | Buy | $15,001 - $50,000 | Source |
| 2015-08-16 | 2015-07-10 | Scott H. Peters | Buy | $15,001 - $50,000 | Source |
| 2015-08-12 | 2015-05-27 | Sheldon Whitehouse | Buy | $1,001 - $15,000 | Source |
| 2015-07-28 | 2015-06-26 | Scott H. Peters | Buy | $15,001 - $50,000 | Source |
| 2015-07-28 | 2015-06-23 | Scott H. Peters | Buy | $15,001 - $50,000 | Source |
| 2015-07-21 | 2015-07-10 | Sheldon Whitehouse | Buy | $1,001 - $15,000 | Source |
| 2015-06-16 | 2015-05-28 | E. Scott Rigell | Buy | $1,001 - $15,000 | Source |
| 2015-06-03 | 2015-05-27 | Sheldon Whitehouse | Buy | $1,001 - $15,000 | Source |
| 2015-02-27 | 2015-01-20 | John A. Yarmuth | Buy | $1,001 - $15,000 | Source |
| 2014-12-26 | 2014-12-10 | Lois Frankel | Buy | $1,001 - $15,000 | Source |
| 2014-12-22 | 2014-11-10 | John A. Yarmuth | Sale | $1,001 - $15,000 | Source |
| 2014-12-19 | 2014-10-28 | Katherine M. Clark | Sale | $1,001 - $15,000 | Source |
| 2014-12-19 | 2014-08-26 | Katherine M. Clark | Buy | $1,001 - $15,000 | Source |
| 2014-12-19 | 2014-08-14 | Katherine M. Clark | Buy | $1,001 - $15,000 | Source |
| 2014-12-19 | 2014-02-27 | Katherine M. Clark | Buy | $1,001 - $15,000 | Source |
| 2014-12-19 | 2014-01-23 | Katherine M. Clark | Buy | $1,001 - $15,000 | Source |
| 2014-11-06 | 2014-10-13 | Virginia Foxx | Sale | $50,001 - $100,000 | Source |
| 2014-10-21 | 2014-09-22 | Lois Frankel | Buy | $1,001 - $15,000 | Source |
| 2014-09-23 | 2014-09-03 | Lois Frankel | Buy | $1,001 - $15,000 | Source |
| 2014-09-23 | 2014-08-20 | Lois Frankel | Buy | $1,001 - $15,000 | Source |
| 2014-08-25 | 2014-08-13 | Lois Frankel | Buy | $1,001 - $15,000 | Source |
| 2014-06-18 | 2014-06-12 | Lois Frankel | Sale | $1,001 - $15,000 | Source |
| 2014-05-21 | 2014-04-29 | Lois Frankel | Buy | $1,001 - $15,000 | Source |
| 2014-05-21 | 2014-04-24 | Lois Frankel | Buy | $1,001 - $15,000 | Source |
| 2014-03-04 | 2014-02-07 | John A. Boehner | Buy | $15,001 - $50,000 | Source |
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Common questions
- Are members of Congress buying or selling MRK?
- 59 members of Congress disclosed 185 transactions in Merck & Company, Inc. Common Stock (MRK) between 2014-03-04 and 2026-10-07: 93 purchases and 92 sales.
- How active was Congress in MRK recently?
- In 2026 filings, 6 transactions in MRK were disclosed: 3 purchases and 3 sales.
- Which members of Congress trade MRK?
- The most active in MRK are Lois Frankel (23), Jared Moskowitz (9) and Katherine M. Clark (9), by number of disclosed transactions. 59 members in all have traded it.