The Merck & Co., Inc. line shows up 134 times in the congressional disclosure record between 2013 and 2026, filed by 45 members: 73 purchases against 61 sales. On balance the chamber has been net buyers, and the purchases sit up 59.9% against the latest close.
*Purchases only, weighted by the midpoint of each disclosed dollar band and marked to the latest close. Filings report a range, never a share count, so this follows the stock rather than anyone's position size.
Members ranked by how their reported MRK purchases have moved since, over roughly the last three years, weighted by disclosed band midpoint and marked to the latest close.
| Date | Member | Type | Amount | Est. price | Latest close | Return |
|---|---|---|---|---|---|---|
| 2026-03-27 | Alan Armstrong | SELL | $15K–$50K | $119.63 | $148.35 2026-08-28 | -24.0% exit |
| 2026-02-04 | Josh Gottheimer | BUY | $1K–$15K | $118.33 | $148.35 2026-08-28 | +25.4% |
| 2025-08-28 | Marjorie Taylor Greene | BUY | $1K–$15K | $83.21 | $148.35 2026-08-28 | +78.3% |
| 2025-06-16 | Scott Scott Franklin | SELL | $1K–$15K | $80.96 | $148.35 2026-08-28 | -28.0% rt |
| 2025-06-13 | Julie Johnson | BUY | $1K–$15K | $81.71 | $148.35 2026-08-28 | +81.6% |
| 2025-04-09 | Marjorie Taylor Greene | BUY | $1K–$15K | $81.91 | $148.35 2026-08-28 | +81.1% |
| 2025-03-20 | Kelly Louise Morrison | SELL | $1K–$15K | $94.73 | $148.35 2026-08-28 | -56.6% exit |
| 2025-02-26 | Gilbert Cisneros | BUY | $15K–$50K | $89.38 | $148.35 2026-08-28 | +66.0% |
| 2025-01-16 | Byron Donalds | SELL | $1K–$15K | $100.70 | $148.35 2026-08-28 | +10.6% rt |
| 2025-01-15 | Jared Moskowitz | SELL | $1K–$15K | $100.09 | $148.35 2026-08-28 | -8.9% rt |
| 2025-01-10 | Keith Alan Self | SELL | $1K–$15K | $99.25 | $148.35 2026-08-28 | -49.5% exit |
| 2024-09-24 | Jonathan Jackson | SELL | $15K–$50K | $114.96 | $148.35 2026-08-28 | -29.0% exit |
| 2024-08-07 | Scott Scott Franklin | BUY | $1K–$15K | $112.49 | $148.35 2026-08-28 | +31.9% |
| 2024-04-10 | Michael C. Burgess | SELL | $1K–$15K | $126.75 | $148.35 2026-08-28 | -17.0% exit |
| 2023-12-28 | Jared Moskowitz | BUY | $1K–$15K | $108.77 | $148.35 2026-08-28 | +36.4% |
| 2023-10-16 | Thomas H Tuberville | SELL | $1K–$15K | $104.14 | $148.35 2026-08-28 | +26.4% rt |
| 2023-09-21 | John P Ricketts | SELL | $50K–$100K | $106.73 | $148.35 2026-08-28 | -39.0% exit |
| 2023-09-13 | Michael C. Burgess | SELL | $1K–$15K | $107.81 | $148.35 2026-08-28 | -37.6% exit |
| 2023-09-11 | C. Scott Franklin | SELL | $15K–$50K | $108.60 | $148.35 2026-08-28 | -36.6% exit |
| 2023-08-02 | Lois Frankel | SELL | $1K–$15K | $105.70 | $148.35 2026-08-28 | +35.0% rt |
| 2023-06-28 | Lois Frankel | SELL | $1K–$15K | $112.44 | $148.35 2026-08-28 | +42.9% rt |
| 2023-02-24 | Jared Moskowitz | BUY | $1K–$15K | $109.89 | $148.35 2026-08-28 | +35.0% |
| 2022-09-12 | Kathy Manning | BUY | $1K–$15K | $88.16 | $148.35 2026-08-28 | +68.3% |
| 2022-08-12 | Byron Donalds | BUY | $1K–$15K | $91.02 | $148.35 2026-08-28 | +63.0% |
| 2022-07-07 | Rick Larsen | BUY | $1K–$15K | $93.01 | $148.35 2026-08-28 | +59.5% |
| 2022-06-01 | Lois Frankel | SELL | $1K–$15K | $91.14 | $148.35 2026-08-28 | +16.5% rt |
| 2022-03-30 | Thomas H Tuberville | BUY | $1K–$15K | $82.40 | $148.35 2026-08-28 | +80.0% |
| 2022-02-28 | Robert J. Wittman | SELL | $1K–$15K | $76.58 | $148.35 2026-08-28 | +4.3% rt |
| 2021-12-03 | Lois Frankel | BUY | $1K–$15K | $73.34 | $148.35 2026-08-28 | +102.3% |
| 2021-11-26 | Bob Gibbs | BUY | $1K–$15K | $79.16 | $148.35 2026-08-28 | +87.4% |
| 2021-09-16 | Katherine M. Clark | SELL | $1K–$15K | $71.97 | $148.35 2026-08-28 | -106.1% exit |
| 2021-07-28 | Carol Devine Miller | SELL | $15K–$50K | $78.33 | $148.35 2026-08-28 | -89.4% exit |
| 2021-07-19 | John Curtis | SELL | $1K–$15K | $77.05 | $148.35 2026-08-28 | -92.5% exit |
| 2021-03-29 | Thomas H Tuberville | SELL | $1K–$15K | $74.71 | $148.35 2026-08-28 | -98.6% exit |
| 2021-03-10 | Richard W. Allen | SELL | $15K–$50K | $71.34 | $148.35 2026-08-28 | -5.1% rt |
| 2020-10-07 | Lois Frankel | BUY | $1K–$15K | $76.37 | $148.35 2026-08-28 | +94.2% |
| 2020-09-23 | Lois Frankel | BUY | $1K–$15K | $78.85 | $148.35 2026-08-28 | +88.2% |
| 2020-07-02 | Richard W. Allen | BUY | $15K–$50K | $75.17 | $148.35 2026-08-28 | +97.3% |
| 2020-04-16 | David A Perdue , Jr | SELL | $1K–$15K | $79.20 | $148.35 2026-08-28 | +29.6% rt |
| 2020-04-16 | David A Perdue , Jr | SELL | $1K–$15K | $79.20 | $148.35 2026-08-28 | +29.6% rt |
| 2020-04-15 | Lois Frankel | BUY | $1K–$15K | $78.31 | $148.35 2026-08-28 | +89.4% |
| 2020-04-14 | David A Perdue , Jr | SELL | $50K–$100K | $79.05 | $148.35 2026-08-28 | +27.9% rt |
| 2020-04-14 | David A Perdue , Jr | SELL | $15K–$50K | $79.05 | $148.35 2026-08-28 | +28.3% rt |
| 2020-04-14 | David A Perdue , Jr | SELL | $50K–$100K | $79.05 | $148.35 2026-08-28 | +28.3% rt |
| 2020-04-14 | David A Perdue , Jr | SELL | $15K–$50K | $79.05 | $148.35 2026-08-28 | +27.9% rt |
| 2020-04-07 | Kelly Loeffler | BUY | $15K–$50K | $74.96 | $148.35 2026-08-28 | +97.9% |
| 2020-04-06 | David A Perdue , Jr | SELL | $1K–$15K | $76.63 | $148.35 2026-08-28 | +23.3% rt |
| 2020-04-06 | David A Perdue , Jr | SELL | $1K–$15K | $76.63 | $148.35 2026-08-28 | +23.3% rt |
| 2020-04-03 | David A Perdue , Jr | SELL | $15K–$50K | $72.76 | $148.35 2026-08-28 | +16.2% rt |
| 2020-04-03 | David A Perdue , Jr | SELL | $15K–$50K | $72.76 | $148.35 2026-08-28 | +16.2% rt |
Buys are marked to the latest close and treated as open. A sell tagged rt closes an earlier disclosed buy in the same name. exit shows how the stock moved after the member sold.
45 members of the U.S. House and Senate have disclosed Merck & Co., Inc. transactions under the STOCK Act — 73 purchases and 61 sales. The full member-by-member breakdown, with dates and dollar ranges, is in the table above.
No member of Congress has disclosed a MRK purchase in the last 90 days. STOCK Act filings lag the trade by up to 45 days, so newer buys may still be pending disclosure.
Notional-weighted, lawmakers' disclosed MRK buys are up 59.9% versus the latest close of $148.35. Each trade's own return — and realized round-trips on matched sells — is in the Return column.
Yes. Under the 2012 STOCK Act, members of Congress may buy and sell individual stocks but must publicly disclose each transaction within 45 days. Bargo surfaces those filings so you can see who traded MRK and how it performed.