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Data as of 2026-09-29
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Boston Scientific Corp (BSX): Congress and insider trades

Who in Congress and inside the company traded BSX, when each filing appeared, and what buying after each one would have earned against the S&P 500.

Key Facts

  • Boston Scientific Corp (BSX) is a listed stock on NYSE.
  • 14 members of Congress filed 74 buys and 68 sells of BSX, the latest published 2026-09-11 (11 September 2026).
  • Insiders filed 10 open market buys worth $10M and 0 sells worth $0, the latest filed 2026-08-26 (26 August 2026).
  • 2 cluster buys of BSX by three or more insiders within 30 days.
  • Across 36 scored buys, Congress averaged -6.8% against the S&P 500 (SPY) over the 90 days after disclosure, with 50% of them ahead of the index. That result is modestly below the market, but could still be chance.
  • Across 3 scored buys, Insiders averaged -17.1% against the S&P 500 (SPY) over the 90 days after disclosure, with 0% of them ahead of the index. That result is too few trades to tell.
  • Data as of 2026-09-29 (29 September 2026).
Congress buys 74 14 members
Congress sells 68
Insider buys 10 $10M
Insider sells 0 $0
Congress buys vs S&P, 90d -6.8% 36 scored buys
Insider buys vs S&P, 90d -17.1% 3 scored buys

Congress trades in BSX

as of 2026-09-11
  1. Ro Khanna49 trades
  2. Michael McCaul47 trades
  3. Alan Lowenthal11 trades
  4. Gil Cisneros10 trades
  5. Lois Frankel8 trades
  6. Kevin Hern3 trades
  7. Markwayne Mullin3 trades
  8. John Curtis3 trades
Showing the latest 100 of 142.
Congress trades in BSX, newest first.
FiledMemberTypeSizeDays to file90 day vs S&P
11 Sep 2026 Gil Cisneros (D-CA) buy 1K–15K 23 n/a
7 Sep 2026 Ro Khanna (D-CA) buy 1K–15K 32 n/a
7 Sep 2026 Ro Khanna (D-CA) buy 1K–15K 25 n/a
12 Aug 2026 Ro Khanna (D-CA) buy 1K–15K 18 n/a
12 Aug 2026 Ro Khanna (D-CA) sell 1K–15K 31 n/a
21 Jul 2026 Alan Armstrong (R-OK) buy 1K–15K 116 n/a
13 Jul 2026 John Boozman (R-AR) sell 1K–15K 39 n/a
8 Jul 2026 Ro Khanna (D-CA) sell 1K–15K 20 n/a
8 Jul 2026 Ro Khanna (D-CA) buy 1K–15K 6 n/a
8 Jul 2026 Ro Khanna (D-CA) buy 1K–15K 34 n/a
3 Jul 2026 Gil Cisneros (D-CA) sell 1K–15K 27 n/a
3 Jul 2026 Gil Cisneros (D-CA) buy 1K–15K 27 n/a
11 Jun 2026 Ro Khanna (D-CA) sell 15K–50K 39 n/a
11 Jun 2026 Ro Khanna (D-CA) sell 1K–15K 13 n/a
11 Jun 2026 Ro Khanna (D-CA) buy 1K–15K 25 -10.6%
9 Jun 2026 Gil Cisneros (D-CA) buy 1K–15K 20 -12.8%
9 Jun 2026 Gil Cisneros (D-CA) buy 1K–15K 10 -12.8%
9 Jun 2026 Gil Cisneros (D-CA) buy 1K–15K 28 -12.8%
13 May 2026 Ro Khanna (D-CA) sell 1K–15K 28 n/a
13 May 2026 Ro Khanna (D-CA) buy 1K–15K 17 -7.5%
10 Apr 2026 Michael McCaul (R-TX) buy 1K–15K 12 -39.5%
9 Apr 2026 Ro Khanna (D-CA) buy 15K–50K 8 -38.1%
9 Apr 2026 Ro Khanna (D-CA) sell 15K–50K 15 n/a
9 Apr 2026 Ro Khanna (D-CA) buy 1K–15K 28 -38.1%
12 Mar 2026 Ro Khanna (D-CA) sell 1K–15K 31 n/a
12 Mar 2026 Ro Khanna (D-CA) sell 15K–50K 32 n/a
12 Mar 2026 Ro Khanna (D-CA) sell 15K–50K 13 n/a
12 Mar 2026 Ro Khanna (D-CA) buy 15K–50K 20 -43.5%
10 Mar 2026 Gil Cisneros (D-CA) buy 1K–15K 27 -39.0%
16 Feb 2026 Gil Cisneros (D-CA) buy 1K–15K 14 -35.2%
16 Jan 2026 Markwayne Mullin (R-OK) buy 15K–50K 18 -38.0%
13 Jan 2026 Gil Cisneros (D-CA) sell 1K–15K 19 n/a
13 Jan 2026 John Boozman (R-AR) sell 1K–15K 27 n/a
16 Dec 2025 Gil Cisneros (D-CA) buy 1K–15K 27 -24.8%
15 May 2025 Ro Khanna (D-CA) buy 1K–15K 19 -10.6%
13 May 2025 Bruce Westerman (R-AR) sell 1K–15K 21 n/a
20 Nov 2023 Michael McCaul (R-TX) buy 15K–50K 17 +8.3%
20 Nov 2023 Michael McCaul (R-TX) sell 15K–50K 17 n/a
20 Nov 2023 Michael McCaul (R-TX) buy 50K–100K 17 +8.3%
20 Nov 2023 Michael McCaul (R-TX) sell 50K–100K 17 n/a
20 Nov 2023 Michael McCaul (R-TX) buy 15K–50K 17 +8.3%
20 Nov 2023 Michael McCaul (R-TX) buy 50K–100K 30 +8.3%
20 Nov 2023 Michael McCaul (R-TX) sell 15K–50K 21 n/a
20 Nov 2023 Michael McCaul (R-TX) sell 50K–100K 21 n/a
20 Nov 2023 Michael McCaul (R-TX) buy 15K–50K 30 +8.3%
10 Nov 2023 Ro Khanna (D-CA) sell 1K–15K 37 n/a
10 Nov 2023 Ro Khanna (D-CA) buy 1K–15K 29 +7.6%
10 Nov 2023 Ro Khanna (D-CA) buy 1K–15K 22 +7.6%
1 Nov 2023 Markwayne Mullin (R-OK) buy 1K–15K 29 +7.9%
12 Oct 2023 Markwayne Mullin (R-OK) buy 15K–50K 29 +9.5%
11 Oct 2023 Lois Frankel (D-FL) sell 1K–15K 32 n/a
9 Aug 2023 Ro Khanna (D-CA) buy 1K–15K 33 +4.1%
26 Jun 2023 Lois Frankel (D-FL) sell 1K–15K 24 n/a
26 Jun 2023 Lois Frankel (D-FL) buy 1K–15K 25 +1.1%
22 May 2023 Lois Frankel (D-FL) sell 1K–15K 18 n/a
22 May 2023 Lois Frankel (D-FL) sell 1K–15K 30 n/a
15 May 2023 Michael McCaul (R-TX) sell 15K–50K 21 n/a
15 May 2023 Michael McCaul (R-TX) sell 15K–50K 37 n/a
15 May 2023 Michael McCaul (R-TX) sell 15K–50K 37 n/a
15 May 2023 Michael McCaul (R-TX) sell 15K–50K 21 n/a
11 May 2023 John Curtis (R-UT) sell 1K–15K 14 n/a
1 May 2023 Lois Frankel (D-FL) sell 1K–15K 30 n/a
24 Apr 2023 Michael McCaul (R-TX) sell 50K–100K 23 n/a
24 Apr 2023 Michael McCaul (R-TX) sell 50K–100K 23 n/a
14 Mar 2023 John Curtis (R-UT) sell 1K–15K 18 n/a
21 Jan 2023 Michael McCaul (R-TX) sell 15K–50K 44 n/a
21 Jan 2023 Michael McCaul (R-TX) sell 15K–50K 44 n/a
21 Jan 2023 Michael McCaul (R-TX) sell 1K–15K 35 n/a
21 Jan 2023 Michael McCaul (R-TX) sell 1K–15K 35 n/a
7 Dec 2022 Ro Khanna (D-CA) buy 1K–15K 33 +0.1%
7 Nov 2022 Alan Lowenthal (D-CA) sell 1K–15K 12 n/a
31 Oct 2022 Alan Lowenthal (D-CA) sell 1K–15K 8 n/a
31 Oct 2022 Alan Lowenthal (D-CA) sell 1K–15K 8 n/a
25 Oct 2022 Lois Frankel (D-FL) buy 1K–15K 26 +4.5%
12 Oct 2022 Ro Khanna (D-CA) buy 1K–15K 29 +5.0%
12 Oct 2022 Ro Khanna (D-CA) buy 1K–15K 31 +5.0%
9 Sep 2022 Ro Khanna (D-CA) buy 1K–15K 16 +10.3%
11 Jul 2022 Ro Khanna (D-CA) buy 1K–15K 20 +12.6%
15 Jun 2022 Michael McCaul (R-TX) buy 15K–50K 40 +10.4%
15 Jun 2022 Ro Khanna (D-CA) sell 15K–50K 18 n/a
15 Jun 2022 Michael McCaul (R-TX) buy 15K–50K 40 +10.4%
15 Jun 2022 Ro Khanna (D-CA) sell 1K–15K 31 n/a
12 May 2022 Ro Khanna (D-CA) sell 15K–50K 30 n/a
12 May 2022 Ro Khanna (D-CA) sell 15K–50K 30 n/a
12 May 2022 Ro Khanna (D-CA) sell 1K–15K 30 n/a
11 Apr 2022 Ro Khanna (D-CA) sell 1K–15K 23 n/a
11 Apr 2022 Ro Khanna (D-CA) sell 1K–15K 23 n/a
21 Mar 2022 Michael McCaul (R-TX) buy 1K–15K 38 +0.6%
21 Mar 2022 Michael McCaul (R-TX) sell 1K–15K 38 n/a
21 Mar 2022 Michael McCaul (R-TX) sell 1K–15K 38 n/a
21 Mar 2022 Michael McCaul (R-TX) buy 50K–100K 38 +0.6%
21 Mar 2022 Michael McCaul (R-TX) buy 15K–50K 38 +0.6%
21 Mar 2022 Michael McCaul (R-TX) buy 1K–15K 38 +0.6%
11 Mar 2022 Ro Khanna (D-CA) buy 1K–15K 19 -4.9%
24 Feb 2022 Michael McCaul (R-TX) sell 1K–15K 26 n/a
24 Feb 2022 Michael McCaul (R-TX) buy 15K–50K 40 -3.9%
24 Feb 2022 Michael McCaul (R-TX) sell 50K–100K 40 n/a
24 Feb 2022 Michael McCaul (R-TX) sell 15K–50K 26 n/a
24 Feb 2022 Michael McCaul (R-TX) buy 50K–100K 40 -3.9%
24 Feb 2022 Michael McCaul (R-TX) buy 50K–100K 40 -3.9%

Insider trades in BSX

as of 2026-08-26
Open market insider trades in BSX, newest first.
FiledInsiderTypeSharesPriceValue90 day vs S&P
26 Aug 2026 Morano Susan E buy 2,040 $49.22 $100K n/a
7 Aug 2026 Habiger David C buy 2,100 $47.59 $99.9K n/a
5 Aug 2026 Mahoney Michael F buy 186,240 $48.33 $9.0M n/a
5 Aug 2026 Habiger David C buy 140 $48.59 $6.8K n/a
5 Aug 2026 Habiger David C buy 1,042 $48.07 $50.1K n/a
3 Aug 2026 LUDWIG EDWARD J buy 5,000 $45.48 $227K n/a
21 May 2026 Pegus Cheryl buy 1,770 $56.49 $100.0K -17.1%
21 May 2026 LUDWIG EDWARD J buy 3,580 $56.68 $203K -17.1%
21 May 2026 Habiger David C buy 2,200 $56.95 $125K -17.1%
21 May 2026 Habiger David C buy 2,250 $55.92 $126K -17.1%

Cluster buys in BSX

Times three or more insiders bought BSX within 30 days.
Last filedStockInsidersTradesTotal valueDays spanned90 day vs S&P
26 Aug 2026 BSX 4 6 $9.5M 23 n/a
21 May 2026 BSX 3 4 $554K 0 -17.1%

Frequently asked questions

Who has bought BSX?

74 Congress buys by 14 members and 10 insider buys are on file. The tables on this page list every one.

Did buying BSX after a disclosure beat the market?

Across 36 scored buys, Congress averaged -6.8% against the S&P 500 (SPY) over the 90 days after disclosure, with 50% of them ahead of the index. That result is modestly below the market, but could still be chance. Across 3 scored buys, Insiders averaged -17.1% against the S&P 500 (SPY) over the 90 days after disclosure, with 0% of them ahead of the index. That result is too few trades to tell. A single stock is a small sample.

Sources: Congressional trades: STOCK Act disclosures, collected from CapitolTrades. Insider trades: SEC Form 4 filings, collected from Finviz. Prices: Yahoo Finance daily adjusted closes. Data as of 2026-09-29 (29 September 2026). About these sources.

Not investment advice. Past disclosed trades do not predict future returns. Disclosures are published late, so the trades shown are ones you could only have copied after the fact. Talk to a licensed adviser before you invest.