The Boston Scientific Corporation line shows up 49 times in the congressional disclosure record between 2015 and 2026, filed by 14 members: 22 purchases against 27 sales. On balance the chamber has been net sellers, and the purchases sit down 29.4% 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.
Reported a BSX purchase in filings from the last 90 days, newest first. 1 member.
Members ranked by how their reported BSX 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 |
|---|---|---|---|---|---|---|
| 2026-06-05 | Gilbert Cisneros | SELL | $1K–$15K | $48.55 | $46.84 2026-08-28 | 0.0% rt |
| 2026-06-05 | Gilbert Cisneros | BUY | $1K–$15K | $48.55 | $46.84 2026-08-28 | -3.5% |
| 2026-06-04 | John Boozman | SELL | $1K–$15K | $48.85 | $46.84 2026-08-28 | +4.1% exit |
| 2026-03-27 | Alan Armstrong | BUY | $1K–$15K | $69.17 | $46.84 2026-08-28 | -32.3% |
| 2025-12-29 | Markwayne Mullin | BUY | $15K–$50K | $95.76 | $46.84 2026-08-28 | -51.1% |
| 2025-12-17 | John Boozman | SELL | $1K–$15K | $94.48 | $46.84 2026-08-28 | -11.0% rt |
| 2025-10-28 | Kevin Hern | SELL | $15K–$50K | $100.97 | $46.84 2026-08-28 | +53.6% exit |
| 2025-07-31 | Gilbert Cisneros | SELL | $1K–$15K | $104.92 | $46.84 2026-08-28 | +55.4% exit |
| 2025-02-24 | Gilbert Cisneros | SELL | $1K–$15K | $104.39 | $46.84 2026-08-28 | +55.1% exit |
| 2025-02-13 | John Boozman | BUY | $1K–$15K | $106.14 | $46.84 2026-08-28 | -55.9% |
| 2023-10-03 | Markwayne Mullin | BUY | $1K–$15K | $51.54 | $46.84 2026-08-28 | -9.1% |
| 2023-09-13 | Markwayne Mullin | BUY | $15K–$50K | $53.20 | $46.84 2026-08-28 | -11.9% |
| 2023-05-31 | Lois Frankel | SELL | $1K–$15K | $51.48 | $46.84 2026-08-28 | +31.6% rt |
| 2023-05-30 | Lois Frankel | BUY | $1K–$15K | $50.49 | $46.84 2026-08-28 | -7.2% |
| 2023-05-01 | Lois Frankel | SELL | $1K–$15K | $52.80 | $46.84 2026-08-28 | +42.1% rt |
| 2023-04-26 | John Curtis | SELL | $1K–$15K | $51.10 | $46.84 2026-08-28 | +8.3% exit |
| 2023-04-19 | Lois Frankel | SELL | $1K–$15K | $52.89 | $46.84 2026-08-28 | +68.3% rt |
| 2023-03-29 | Lois Frankel | SELL | $1K–$15K | $49.08 | $46.84 2026-08-28 | +80.2% rt |
| 2023-02-23 | John Curtis | SELL | $1K–$15K | $47.18 | $46.84 2026-08-28 | +0.7% exit |
| 2022-10-24 | Alan S. Lowenthal | SELL | $1K–$15K | $40.98 | $46.84 2026-08-28 | +11.8% rt |
| 2022-10-21 | Alan S. Lowenthal | SELL | $1K–$15K | $40.57 | $46.84 2026-08-28 | +12.8% rt |
| 2022-10-21 | Alan S. Lowenthal | SELL | $1K–$15K | $40.57 | $46.84 2026-08-28 | +10.7% rt |
| 2022-09-28 | Lois Frankel | BUY | $1K–$15K | $39.13 | $46.84 2026-08-28 | +19.7% |
| 2021-12-16 | Robert J. Wittman | SELL | $1K–$15K | $40.43 | $46.84 2026-08-28 | +5.1% rt |
| 2021-08-06 | Alan S. Lowenthal | SELL | $1K–$15K | $44.70 | $46.84 2026-08-28 | +24.3% rt |
| 2021-08-03 | Alan S. Lowenthal | SELL | $1K–$15K | $45.54 | $46.84 2026-08-28 | +26.7% rt |
| 2021-02-02 | Alan S. Lowenthal | BUY | $1K–$15K | $36.64 | $46.84 2026-08-28 | +27.8% |
| 2021-02-02 | Alan S. Lowenthal | BUY | $624.29–$624.29 | $36.64 | $46.84 2026-08-28 | +27.8% |
| 2021-02-02 | Alan S. Lowenthal | BUY | $330.51–$330.51 | $36.64 | $46.84 2026-08-28 | +27.8% |
| 2021-02-01 | Alan S. Lowenthal | BUY | $15K–$50K | $35.95 | $46.84 2026-08-28 | +30.3% |
| 2021-02-01 | Alan S. Lowenthal | BUY | $1K–$15K | $35.95 | $46.84 2026-08-28 | +30.3% |
| 2021-02-01 | Alan S. Lowenthal | BUY | $860.95–$860.95 | $35.95 | $46.84 2026-08-28 | +30.3% |
| 2020-10-21 | Lois Frankel | BUY | $1K–$15K | $37.15 | $46.84 2026-08-28 | +26.1% |
| 2020-10-02 | Robert J. Wittman | BUY | $1K–$15K | $38.48 | $46.84 2026-08-28 | +21.7% |
| 2020-08-10 | Dean Phillips | BUY | $1K–$15K | $38.98 | $46.84 2026-08-28 | +20.2% |
| 2020-03-26 | Lois Frankel | BUY | $1K–$15K | $31.42 | $46.84 2026-08-28 | +49.1% |
| 2020-03-19 | Alan S. Lowenthal | SELL | $460.82–$460.82 | $28.27 | $46.84 2026-08-28 | -65.7% exit |
| 2020-03-19 | Alan S. Lowenthal | SELL | $1K–$15K | $28.27 | $46.84 2026-08-28 | -65.7% exit |
| 2020-03-18 | Lois Frankel | BUY | $1K–$15K | $27.24 | $46.84 2026-08-28 | +72.0% |
| 2020-03-13 | Alan S. Lowenthal | SELL | $614.21–$614.21 | $32.33 | $46.84 2026-08-28 | +16.7% rt |
| 2020-03-11 | Alan S. Lowenthal | SELL | $1K–$15K | $33.86 | $46.84 2026-08-28 | +32.2% rt |
| 2020-02-27 | Josh Gottheimer | SELL | $1K–$15K | $37.92 | $46.84 2026-08-28 | -23.5% exit |
| 2020-02-05 | Mo Brooks | SELL | $1K–$15K | $42.62 | $46.84 2026-08-28 | -9.9% exit |
| 2019-07-30 | Lois Frankel | SELL | $1K–$15K | $42.86 | $46.84 2026-08-28 | -9.3% exit |
| 2019-04-25 | Susie Lee | SELL | $1K–$15K | $36.93 | $46.84 2026-08-28 | -26.8% exit |
| 2018-01-22 | Alan S. Lowenthal | BUY | $962.57–$962.57 | $27.71 | $46.84 2026-08-28 | +69.0% |
| 2017-12-14 | Alan S. Lowenthal | BUY | $15K–$50K | $25.62 | $46.84 2026-08-28 | +82.8% |
| 2017-02-01 | Lois Frankel | SELL | $1K–$15K | $23.96 | $46.84 2026-08-28 | -95.5% exit |
| 2015-03-18 | K. Michael Conaway | BUY | $1K–$15K | $17.76 | $46.84 2026-08-28 | +163.7% |
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.
14 members of the U.S. House and Senate have disclosed Boston Scientific Corporation transactions under the STOCK Act — 22 purchases and 27 sales. The full member-by-member breakdown, with dates and dollar ranges, is in the table above.
1 member disclosed a BSX purchase in the last 90 days — most recently Gilbert Cisneros on 2026-06-05. See the "Lawmakers who bought BSX recently" section above for the dated list.
Notional-weighted, lawmakers' disclosed BSX buys are down 29.4% versus the latest close of $46.84. 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 BSX and how it performed.