*Notional-weighted price return on lawmakers' disclosed buys of MRK, marked to the latest close — per-share (share counts aren't disclosed).
| Date | Member | Type | Amount | Est. price | Latest close | Return |
|---|---|---|---|---|---|---|
| 2017-06-15 | Patty Murray | SELL | $1K–$15K | $60.30 | $128.66 2026-06-26 | -1.5% rt |
| 2017-05-09 | Hon. James B. Renacci | BUY | $1K–$15K | $60.39 | $128.66 2026-06-26 | +113.0% |
| 2017-03-22 | Hon. Lois Frankel | SELL | $1K–$15K | $60.59 | $128.66 2026-06-26 | -112.3% exit |
| 2017-03-17 | Hon. Virginia Foxx | BUY | $15K–$50K | $60.97 | $128.66 2026-06-26 | +111.0% |
| 2017-03-16 | Patty Murray | BUY | $1K–$15K | $61.24 | $128.66 2026-06-26 | +110.1% |
| 2017-03-16 | Hon. Lois Frankel | SELL | $1K–$15K | $61.24 | $128.66 2026-06-26 | -110.1% exit |
| 2017-03-08 | Hon. Lois Frankel | SELL | $1K–$15K | $62.79 | $128.66 2026-06-26 | -104.9% exit |
| 2017-02-14 | Hon. Kathy Castor | SELL | $1K–$15K | $62.65 | $128.66 2026-06-26 | +33.9% rt |
| 2017-01-26 | Hon. James B. Renacci | BUY | $1K–$15K | $58.40 | $128.66 2026-06-26 | +120.3% |
| 2017-01-25 | John Hoeven | SELL | $50K–$100K | $58.28 | $128.66 2026-06-26 | +24.1% rt |
| 2016-08-17 | Hon. Lois Frankel | SELL | $1K–$15K | $60.39 | $128.66 2026-06-26 | -113.0% exit |
| 2016-03-16 | Hon. E. Scott Rigell | BUY | $15K–$50K | $49.56 | $128.66 2026-06-26 | +159.6% |
| 2016-03-14 | Hon. Harold Dallas Rogers | BUY | $1K–$15K | $50.65 | $128.66 2026-06-26 | +154.0% |
| 2016-02-12 | Hon. Kathy Castor | BUY | $1K–$15K | $46.78 | $128.66 2026-06-26 | +175.0% |
| 2016-01-28 | John Hoeven | BUY | $50K–$100K | $46.95 | $128.66 2026-06-26 | +174.1% |
| 2016-01-21 | Hon. Alan S. Lowenthal | BUY | $15K–$50K | $48.59 | $128.66 2026-06-26 | +164.8% |
| 2016-01-21 | Hon. Alan S. Lowenthal | BUY | $15K–$50K | $48.59 | $128.66 2026-06-26 | +164.8% |
| 2016-01-14 | Sheldon Whitehouse | BUY | $1K–$15K | $49.43 | $128.66 2026-06-26 | +160.3% |
| 2016-01-14 | Sheldon Whitehouse | BUY | $1K–$15K | $49.43 | $128.66 2026-06-26 | +160.3% |
| 2015-11-18 | Hon. Katherine M. Clark | SELL | $15K–$50K | $51.75 | $128.66 2026-06-26 | -148.6% exit |
| 2015-08-12 | James M Inhofe | BUY | $15K–$50K | $55.59 | $128.66 2026-06-26 | +131.4% |
| 2015-07-10 | Sheldon Whitehouse | BUY | $1K–$15K | $55.30 | $128.66 2026-06-26 | +132.7% |
| 2015-07-09 | James M Inhofe | BUY | $50K–$100K | $54.75 | $128.66 2026-06-26 | +135.0% |
| 2015-05-28 | Hon. E. Scott Rigell | BUY | $1K–$15K | $56.97 | $128.66 2026-06-26 | +125.9% |
| 2015-05-27 | Sheldon Whitehouse | BUY | $1K–$15K | $56.74 | $128.66 2026-06-26 | +126.8% |
| 2015-05-27 | Sheldon Whitehouse | BUY | $1K–$15K | $56.74 | $128.66 2026-06-26 | +126.8% |
| 2015-03-31 | Hon. James B. Renacci | BUY | $1K–$15K | $54.85 | $128.66 2026-06-26 | +134.6% |
| 2015-02-16 | Hon. Dan Benishek | BUY | $1K–$15K | $56.12 | $128.66 2026-06-26 | +129.3% |
| 2015-01-20 | Hon. John A. Yarmuth | BUY | $1K–$15K | $59.74 | $128.66 2026-06-26 | +115.4% |
| 2013-05-22 | SUSAN M COLLINS | SELL | $1K–$15K | $44.57 | $128.66 2026-06-26 | -188.7% exit |
| 2013-03-04 | THAD COCHRAN | BUY | $1K–$15K | $41.35 | $128.66 2026-06-26 | +211.1% |
| Hon. Kenny Marchant | BUY | $1K–$15K | — | — | — |
Return: buys marked to the latest close (open); sells tagged rt are realized round-trips vs a prior disclosed buy; exit = timing (stock move after the sale, seller's perspective).