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 |
|---|---|---|---|---|---|
| 2026-10-07 | 2026-09-24 | Maria Elvira Salazar | Partial sale | $1,001 - $15,000 | Source |
| 2026-09-09 | 2026-08-19 | Maria Elvira Salazar | Buy | $15,001 - $50,000 | Source |
| 2026-07-21 | 2026-03-27 | Alan Armstrong | Sale | $15,001 - $50,000 | Source |
| 2026-03-16 | 2026-02-04 | Josh Gottheimer | Buy | $1,001 - $15,000 | Source |
| 2026-01-15 | 2025-12-18 | Julie Johnson | Sale | $1,001 - $15,000 | Source |
| 2026-01-12 | 2025-12-19 | Gilbert Cisneros | Buy | $1,001 - $15,000 | Source |
| 2025-12-15 | 2025-11-18 | Gilbert Cisneros | Buy | $1,001 - $15,000 | Source |
| 2025-12-11 | 2025-11-13 | Julie Johnson | Partial sale | $1,001 - $15,000 | Source |
| 2025-10-10 | 2025-09-23 | Valerie Hoyle | Sale | $1,001 - $15,000 | Source |
| 2025-10-05 | 2025-03-19 | Sheri Biggs | Sale | $15,001 - $50,000 | Source |
| 2025-09-12 | 2024-10-29 | Valerie Hoyle | Buy | $1,001 - $15,000 | Source |
| 2025-09-12 | 2025-08-04 | Lisa McClain | Sale | $1,001 - $15,000 | Source |
| 2025-09-12 | 2025-08-05 | Gilbert Cisneros | Buy | $1,001 - $15,000 | Source |
| 2025-09-11 | 2025-08-14 | Julie Johnson | Partial sale | $1,001 - $15,000 | Source |
| 2025-08-29 | 2025-08-28 | Marjorie Taylor Greene | Buy | $1,001 - $15,000 | Source |
| 2025-08-20 | 2025-07-11 | Ritchie John Torres | Sale | $1,001 - $15,000 | Source |
| 2025-08-20 | 2024-09-26 | Ritchie John Torres | Buy | $1,001 - $15,000 | Source |
| 2025-08-13 | 2025-06-24 | Lisa McClain | Buy | $1,001 - $15,000 | Source |
| 2025-07-14 | 2025-06-16 | Scott Scott Franklin | Sale | $1,001 - $15,000 | Source |
| 2025-07-14 | 2025-06-13 | Julie Johnson | Buy | $1,001 - $15,000 | Source |
| 2025-07-03 | 2024-08-07 | Scott Scott Franklin | Buy | $1,001 - $15,000 | Source |
| 2025-06-06 | 2025-05-30 | Gilbert Cisneros | Sale | $1,001 - $15,000 | Source |
| 2025-05-31 | 2025-05-15 | Rob Bresnahan | Sale | $15,001 - $50,000 | Source |
| 2025-05-12 | 2025-04-21 | Bruce Westerman | Sale | $1,001 - $15,000 | Source |
| 2025-05-08 | 2025-04-08 | Rob Bresnahan | Buy | $15,001 - $50,000 | Source |
| 2025-05-08 | 2025-04-17 | Jefferson Shreve | Sale | $15,001 - $50,000 | Source |
| 2025-05-06 | 2025-05-05 | Marjorie Taylor Greene | Buy | $1,001 - $15,000 | Source |
| 2025-05-06 | 2025-04-29 | Gilbert Cisneros | Buy | $1,001 - $15,000 | Source |
| 2025-04-16 | 2025-03-03 | Bruce Westerman | Buy | $1,001 - $15,000 | Source |
| 2025-04-11 | 2025-04-09 | Marjorie Taylor Greene | Buy | $1,001 - $15,000 | Source |
| 2025-04-11 | 2025-03-20 | Kelly Louise Morrison | Partial sale | $1,001 - $15,000 | Source |
| 2025-04-07 | 2025-03-31 | Gilbert Cisneros | Partial sale | $15,001 - $50,000 | Source |
| 2025-03-27 | 2025-02-25 | Rob Bresnahan | Sale | $15,001 - $50,000 | Source |
| 2025-03-09 | 2025-02-24 | Jefferson Shreve | Buy | $15,001 - $50,000 | Source |
| 2025-03-06 | 2025-02-26 | Gilbert Cisneros | Buy | $15,001 - $50,000 | Source |
| 2025-02-12 | 2025-01-17 | Julie Johnson | Buy | $1,001 - $15,000 | Source |
| 2025-02-11 | 2025-01-24 | Gilbert Cisneros | Sale | $1,001 - $15,000 | Source |
| 2025-02-10 | 2025-01-27 | Josh Gottheimer | Sale | $15,001 - $50,000 | Source |
| 2025-02-10 | 2025-01-15 | Jared Moskowitz | Sale | $1,001 - $15,000 | Source |
| 2025-02-10 | 2025-01-15 | Jared Moskowitz | Sale | $1,001 - $15,000 | Source |
| 2025-02-10 | 2025-01-15 | Jared Moskowitz | Sale | $1,001 - $15,000 | Source |
| 2025-02-10 | 2025-01-16 | Byron Donalds | Sale | $1,001 - $15,000 | Source |
| 2025-02-10 | 2025-01-16 | Byron Donalds | Sale | $1,001 - $15,000 | Source |
| 2024-12-09 | 2024-11-08 | Jared Moskowitz | Buy | $1,001 - $15,000 | Source |
| 2024-10-11 | 2024-09-24 | Jonathan Jackson | Sale | $15,001 - $50,000 | Source |
| 2024-09-06 | 2024-09-04 | John James | Sale | $1,001 - $15,000 | Source |
| 2024-09-02 | 2023-11-10 | John James | Buy | $1,001 - $15,000 | Source |
| 2024-08-21 | 2023-09-01 | Jared Moskowitz | Buy | $1,001 - $15,000 | Source |
| 2024-08-21 | 2023-07-14 | Jared Moskowitz | Buy | $1,001 - $15,000 | Source |
| 2024-08-20 | 2024-08-02 | C. Scott Franklin | Buy | $1,001 - $15,000 | Source |
| 2024-08-16 | 2024-07-02 | Kathy Manning | Buy | $1,001 - $15,000 | Source |
| 2024-07-09 | 2024-06-21 | Josh Gottheimer | Partial sale | $1,001 - $15,000 | Source |
| 2024-05-02 | 2024-04-10 | Michael C. Burgess | Partial sale | $1,001 - $15,000 | Source |
| 2024-02-06 | 2024-01-23 | Kathy Manning | Buy | $15,001 - $50,000 | Source |
| 2024-02-06 | 2024-01-23 | Kathy Manning | Buy | $1,001 - $15,000 | Source |
| 2024-02-06 | 2024-01-23 | Kathy Manning | Buy | $1,001 - $15,000 | Source |
| 2024-01-22 | 2023-12-28 | Jared Moskowitz | Buy | $1,001 - $15,000 | Source |
| 2024-01-22 | 2023-12-28 | Jared Moskowitz | Buy | $1,001 - $15,000 | Source |
| 2023-11-16 | 2023-10-16 | Thomas H Tuberville | Sale | $1,001 - $15,000 | Source |
| 2023-11-09 | 2023-10-24 | Greg Stanton | Sale | $1,001 - $15,000 | Source |
| 2023-11-09 | 2023-09-26 | Greg Stanton | Buy | $1,001 - $15,000 | Source |
| 2023-10-20 | 2023-09-21 | John P Ricketts | Sale | $50,001 - $100,000 | Source |
| 2023-10-12 | 2023-09-11 | C. Scott Franklin | Partial sale | $15,001 - $50,000 | Source |
| 2023-10-10 | 2023-09-08 | Lois Frankel | Sale | $1,001 - $15,000 | Source |
| 2023-10-10 | 2023-09-06 | Lois Frankel | Partial sale | $1,001 - $15,000 | Source |
| 2023-10-03 | 2023-09-13 | Michael C. Burgess | Sale | $1,001 - $15,000 | Source |
| 2023-08-26 | 2023-08-02 | Lois Frankel | Partial sale | $1,001 - $15,000 | Source |
| 2023-08-13 | 2023-07-14 | Daniel Goldman | Sale | $1,001 - $15,000 | Source |
| 2023-08-13 | 2023-07-12 | Daniel Goldman | Sale | $1,001 - $15,000 | Source |
| 2023-08-10 | 2021-03-10 | Richard W. Allen | Sale | $15,001 - $50,000 | Source |
| 2023-08-10 | 2020-07-02 | Richard W. Allen | Buy | $15,001 - $50,000 | Source |
| 2023-08-10 | 2017-11-30 | Richard W. Allen | Sale | $1,001 - $15,000 | Source |
| 2023-07-28 | 2023-06-28 | Lois Frankel | Partial sale | $1,001 - $15,000 | Source |
| 2023-06-06 | 2023-05-25 | Zoe Lofgren | Sale | $1,001 - $15,000 | Source |
| 2023-05-26 | 2022-07-07 | Rick Larsen | Buy | $1,001 - $15,000 | Source |
| 2023-05-19 | 2023-04-10 | Daniel Goldman | Buy | $1,001 - $15,000 | Source |
| 2023-04-17 | 2023-03-06 | Daniel Goldman | Partial sale | $15,001 - $50,000 | Source |
| 2023-03-10 | 2023-02-24 | Jared Moskowitz | Buy | $1,001 - $15,000 | Source |
| 2023-02-24 | 2023-01-31 | Daniel Goldman | Buy | $1,001 - $15,000 | Source |
| 2023-02-17 | 2023-01-11 | Josh Gottheimer | Partial sale | $1,001 - $15,000 | Source |
| 2022-12-19 | 2019-10-17 | Thomas Suozzi | Partial sale | $15,001 - $50,000 | Source |
| 2022-10-11 | 2022-09-12 | Kathy Manning | Buy | $1,001 - $15,000 | Source |
| 2022-09-14 | 2022-08-05 | Kathy Manning | Partial sale | $1,001 - $15,000 | Source |
| 2022-09-02 | 2021-07-28 | Carol Devine Miller | Partial sale | $15,001 - $50,000 | Source |
| 2022-08-10 | 2022-07-15 | Kathy Manning | Buy | $1,001 - $15,000 | Source |
| 2022-06-16 | 2022-06-01 | Lois Frankel | Partial sale | $1,001 - $15,000 | Source |
| 2022-04-19 | 2022-03-16 | John Rutherford | Sale | $1,001 - $15,000 | Source |
| 2022-04-08 | 2022-03-30 | Thomas H Tuberville | Buy | $1,001 - $15,000 | Source |
| 2022-03-09 | 2022-02-28 | Robert J. Wittman | Sale | $1,001 - $15,000 d | Source |
| 2022-01-16 | 2021-12-03 | Lois Frankel | Buy | $1,001 - $15,000 c | Source |
| 2021-11-28 | 2021-11-26 | Bob Gibbs | Buy | $1,001 - $15,000 f | Source |
| 2021-10-14 | 2021-09-16 | Katherine M. Clark | Sale | $1,001 - $15,000 c | Source |
| 2021-10-07 | 2021-09-30 | Zoe Lofgren | Buy | $1,001 - $15,000 c | Source |
| 2021-09-23 | 2017-08-17 | Thomas Suozzi | Buy | $15,001 - c $50,000 | Source |
| 2021-09-23 | 2019-11-18 | Thomas Suozzi | Sale | $15,001 - b $50,000 | Source |
| 2021-08-26 | 2020-08-26 | Tom Malinowski | Buy | $15,001 - g $50,000 | Source |
| 2021-08-15 | 2021-07-27 | Katherine M. Clark | Buy | $1,001 - $15,000 f | Source |
| 2021-08-15 | 2021-07-27 | Katherine M. Clark | Buy | $1,001 - $15,000 f | Source |
| 2021-08-06 | 2021-07-19 | John Curtis | Partial sale | $1,001 - $15,000 c | Source |
| 2021-07-23 | 2021-03-29 | Thomas H Tuberville | Sale | $1,001 - $15,000 | 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.