Insmed Inc (INSM): Congress and insider trades
Who in Congress and inside the company traded INSM, when each filing appeared, and what buying after each one would have earned against the S&P 500.
Key Facts
- Insmed Inc (INSM) is a listed stock on NASDAQ.
- 1 member of Congress filed 1 buy and 2 sells of INSM, the latest published 2026-07-08 (8 July 2026).
- Insiders filed 0 open market buys worth $0 and 15 sells worth $69M, the latest filed 2026-09-11 (11 September 2026).
- Across 1 scored buy, Congress averaged -10.9% 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 trades in INSM
as of 2026-07-08| Filed | Member | Type | Size | Days to file | 90 day vs S&P |
|---|---|---|---|---|---|
| 8 Jul 2026 | Josh Gottheimer (D-NJ) | sell | 1Kâ15K | 27 | n/a |
| 15 May 2025 | Josh Gottheimer (D-NJ) | sell | 1Kâ15K | 35 | n/a |
| 16 Jan 2023 | Josh Gottheimer (D-NJ) | buy | 1Kâ15K | 38 | -10.9% |
Nothing matches that search.
Insider trades in INSM
as of 2026-09-11| Filed | Insider | Type | Shares | Price | Value | 90 day vs S&P |
|---|---|---|---|---|---|---|
| 11 Sep 2026 | Brennan David R | sell | 25,000 | $124.00 | $3.1M | n/a |
| 12 Aug 2026 | Adsett Roger | sell | 239,850 | $133.27 | $32M | n/a |
| 7 Aug 2026 | Flammer Martina M.D. | sell | 27,173 | $128.61 | $3.5M | n/a |
| 24 Jul 2026 | Lewis William | sell | 10,700 | $106.06 | $1.1M | n/a |
| 10 Jul 2026 | Lewis William | sell | 10,699 | $117.40 | $1.3M | n/a |
| 8 Jul 2026 | Flammer Martina M.D. | sell | 12,302 | $109.98 | $1.4M | n/a |
| 26 Jun 2026 | Lewis William | sell | 21,398 | $103.32 | $2.2M | n/a |
| 24 Jun 2026 | Smith Michael Alexander | sell | 1,806 | $95.82 | $173K | n/a |
| 22 May 2026 | Smith Michael Alexander | sell | 6,149 | $108.47 | $667K | n/a |
| 6 May 2026 | Lewis William | sell | 10,699 | $137.34 | $1.5M | n/a |
| 17 Apr 2026 | Lewis William | sell | 10,699 | $143.97 | $1.5M | n/a |
| 8 Apr 2026 | Lewis William | sell | 10,699 | $163.22 | $1.7M | n/a |
| 3 Apr 2026 | Adsett Roger | sell | 88,060 | $164.63 | $14M | n/a |
| 31 Mar 2026 | Smith Michael Alexander | sell | 19,638 | $150.98 | $3.0M | n/a |
| 20 Mar 2026 | Lewis William | sell | 10,699 | $143.52 | $1.5M | n/a |
Nothing matches that search.
Related pages
Frequently asked questions
Who has bought INSM?
1 Congress buy by 1 member and 0 insider buys are on file. The tables on this page list every one.
Did buying INSM after a disclosure beat the market?
Across 1 scored buy, Congress averaged -10.9% 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.