*Notional-weighted price return on lawmakers' disclosed buys of BSX, marked to the latest close — per-share (share counts aren't disclosed).
| Date | Member | Type | Amount | Est. price | Latest close | Return |
|---|---|---|---|---|---|---|
| 2025-12-29 | Markwayne Mullin | BUY | $15K–$50K | $95.76 | $44.23 2026-06-26 | -53.8% |
| 2025-12-17 | John Boozman | SELL | $1K–$15K | $94.48 | $44.23 2026-06-26 | -11.0% rt |
| 2025-10-28 | Hon. Kevin Hern | SELL | $15K–$50K | $100.97 | $44.23 2026-06-26 | +56.2% exit |
| 2025-07-31 | Hon. Gilbert Cisneros | SELL | $1K–$15K | $104.92 | $44.23 2026-06-26 | +57.8% exit |
| 2025-02-24 | Hon. Gilbert Cisneros | SELL | $1K–$15K | $104.39 | $44.23 2026-06-26 | +57.6% exit |
| 2025-02-13 | John Boozman | BUY | $1K–$15K | $106.14 | $44.23 2026-06-26 | -58.3% |
| 2023-10-03 | Markwayne Mullin | BUY | $1K–$15K | $51.54 | $44.23 2026-06-26 | -14.2% |
| 2023-09-13 | Markwayne Mullin | BUY | $15K–$50K | $53.20 | $44.23 2026-06-26 | -16.9% |
| 2023-05-31 | Hon. Lois Frankel | SELL | $1K–$15K | $51.48 | $44.23 2026-06-26 | +31.6% rt |
| 2023-05-30 | Hon. Lois Frankel | BUY | $1K–$15K | $50.49 | $44.23 2026-06-26 | -12.4% |
| 2023-05-01 | Hon. Lois Frankel | SELL | $1K–$15K | $52.80 | $44.23 2026-06-26 | +42.1% rt |
| 2023-04-26 | Hon. John Curtis | SELL | $1K–$15K | $51.10 | $44.23 2026-06-26 | +13.4% exit |
| 2023-04-19 | Hon. Lois Frankel | SELL | $1K–$15K | $52.89 | $44.23 2026-06-26 | +68.3% rt |
| 2023-03-29 | Hon. Lois Frankel | SELL | $1K–$15K | $49.08 | $44.23 2026-06-26 | +80.2% rt |
| 2023-02-23 | Hon. John Curtis | SELL | $1K–$15K | $47.18 | $44.23 2026-06-26 | +6.3% exit |
| 2022-10-24 | Hon. Alan S. Lowenthal | SELL | $1K–$15K | $40.98 | $44.23 2026-06-26 | +11.8% rt |
| 2022-10-21 | Hon. Alan S. Lowenthal | SELL | $1K–$15K | $40.57 | $44.23 2026-06-26 | +12.8% rt |
| 2022-10-21 | Hon. Alan S. Lowenthal | SELL | $1K–$15K | $40.57 | $44.23 2026-06-26 | +10.7% rt |
| 2022-09-28 | Hon. Lois Frankel | BUY | $1K–$15K | $39.13 | $44.23 2026-06-26 | +13.0% |
| 2021-12-16 | Hon. Robert J. Wittman | SELL | $1K–$15K | $40.43 | $44.23 2026-06-26 | +5.1% rt |
| 2021-08-06 | Hon. Alan S. Lowenthal | SELL | $1K–$15K | $44.70 | $44.23 2026-06-26 | +24.3% rt |
| 2021-08-03 | Hon. Alan S. Lowenthal | SELL | $1K–$15K | $45.54 | $44.23 2026-06-26 | +26.7% rt |
| 2021-02-02 | Hon. Alan S. Lowenthal | BUY | $1K–$15K | $36.64 | $44.23 2026-06-26 | +20.7% |
| 2021-02-02 | Hon. Alan S. Lowenthal | BUY | $624.29–$624.29 | $36.64 | $44.23 2026-06-26 | +20.7% |
| 2021-02-02 | Hon. Alan S. Lowenthal | BUY | $330.51–$330.51 | $36.64 | $44.23 2026-06-26 | +20.7% |
| 2021-02-01 | Hon. Alan S. Lowenthal | BUY | $15K–$50K | $35.95 | $44.23 2026-06-26 | +23.0% |
| 2021-02-01 | Hon. Alan S. Lowenthal | BUY | $1K–$15K | $35.95 | $44.23 2026-06-26 | +23.0% |
| 2021-02-01 | Hon. Alan S. Lowenthal | BUY | $860.95–$860.95 | $35.95 | $44.23 2026-06-26 | +23.0% |
| 2020-10-21 | Hon. Lois Frankel | BUY | $1K–$15K | $37.15 | $44.23 2026-06-26 | +19.1% |
| 2020-10-02 | Hon. Robert J. Wittman | BUY | $1K–$15K | $38.48 | $44.23 2026-06-26 | +14.9% |
| 2020-08-10 | Hon. Dean Phillips | BUY | $1K–$15K | $38.98 | $44.23 2026-06-26 | +13.5% |
| 2020-03-26 | Hon. Lois Frankel | BUY | $1K–$15K | $31.42 | $44.23 2026-06-26 | +40.8% |
| 2020-03-19 | Hon. Alan S. Lowenthal | SELL | $460.82–$460.82 | $28.27 | $44.23 2026-06-26 | -56.5% exit |
| 2020-03-19 | Hon. Alan S. Lowenthal | SELL | $1K–$15K | $28.27 | $44.23 2026-06-26 | -56.5% exit |
| 2020-03-18 | Hon. Lois Frankel | BUY | $1K–$15K | $27.24 | $44.23 2026-06-26 | +62.4% |
| 2020-03-13 | Hon. Alan S. Lowenthal | SELL | $614.21–$614.21 | $32.33 | $44.23 2026-06-26 | +16.7% rt |
| 2020-03-11 | Hon. Alan S. Lowenthal | SELL | $1K–$15K | $33.86 | $44.23 2026-06-26 | +32.2% rt |
| 2020-02-27 | Hon. Josh Gottheimer | SELL | $1K–$15K | $37.92 | $44.23 2026-06-26 | -16.6% exit |
| 2020-02-05 | Hon. Mo Brooks | SELL | $1K–$15K | $42.62 | $44.23 2026-06-26 | -3.8% exit |
| 2019-07-30 | Hon. Lois Frankel | SELL | $1K–$15K | $42.86 | $44.23 2026-06-26 | -3.2% exit |
| 2019-04-25 | Hon. Susie Lee | SELL | $1K–$15K | $36.93 | $44.23 2026-06-26 | -19.8% exit |
| 2018-01-22 | Hon. Alan S. Lowenthal | BUY | $962.57–$962.57 | $27.71 | $44.23 2026-06-26 | +59.6% |
| 2017-12-14 | Hon. Alan S. Lowenthal | BUY | $15K–$50K | $25.62 | $44.23 2026-06-26 | +72.6% |
| 2017-02-01 | Hon. Lois Frankel | SELL | $1K–$15K | $23.96 | $44.23 2026-06-26 | -84.6% exit |
| 2015-03-18 | Hon. K. Michael Conaway | BUY | $1K–$15K | $17.76 | $44.23 2026-06-26 | +149.0% |
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).