Insmed ($INSM) Insider Trading & Smart Money Activity
Insmed Incorporated ($INSM) has 4 insider trades, 1 congress trade, 5 13F position changes and 4 analyst ratings on file. In the last 12 months on the open market, no insider bought and 2 insiders sold ($2.38M), net -$2.38M.
- Insider buyers (12 mo)
- 0
- Insider sellers (12 mo)
- 2
- Net insider $ (12 mo)
- -$2.38M
- Congress trades (12 mo)
- 1
- 13F moves on file
- 5
- Analyst ratings on file
- 4
INSM insider buying and selling by quarter
| Quarter | Insider buys | Insider sales | Congress buys / sales | 13F added / cut |
|---|---|---|---|---|
| Q1 2026 | 0 | 0 | 0 / 0 | 0 / 0 |
| Q2 2026 | 0 | 2 · $2.38M | 0 / 1 | 4 / 0 |
| Q3 2026 | 0 | 0 | 0 / 0 | 0 / 0 |
| Q4 2026 | 0 | 0 | 0 / 0 | 1 / 0 |
Insider buys and sales count open-market trades only (Form 4 codes P and S). Grants, option exercises and tax withholding are left out.
All INSM insider, congress, 13F and analyst activity
| Date | Source | Who | Action | Shares | Value / amount | ΔOwn | 1W | 1M | 6M | Filing | Story |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 13F | Burney Co/ | New | +41.03K sh | $4.68M | Read | ||||||
| Analyst | Wolfe Research | Lowers to Peer Perform | Read | ||||||||
| Analyst | HC Wainwright | Reiterates to Buy | PT $220 | Read | |||||||
| Analyst | Barclays | Reiterates to Overweight | PT $207 | -10.9% | — | ||||||
| Insider | William LewisChair and CEO | Sell (Open-market sale) 10b5-1 | 21.40K sh | $2.21M | +6.8% | +0.2% | — | ||||
| Insider | William LewisChair and CEO | Buy (Option exercise) | 21.40K sh | $533.68K | +6.8% | +0.2% | Read | ||||
| Insider | Samuele ButeraSVP, GM, Global Respiratory | Buy (Grant or award) | 12.57K sh | +4.4% | +5.1% | — | |||||
| Insider | Smith Michael AlexanderChief Legal Officer | Sell (Open-market sale) 10b5-1 | 1.81K sh | $173.05K | +6.2% | +8.1% | — | ||||
| Analyst | Evercore ISI Group | Reiterates to buy | PT $160 | +6.2% | +8.1% | Read | |||||
| Congress | Josh Gottheimer | Sale | $1,001 - $15,000 | +7.2% | +25.8% | — | |||||
| 13F | Baker Bros. Advisors | Added | +828.37K sh | $777.29M | -2.7% | -10.7% | — | ||||
| 13F | Gw&K Investment Management | Added | +140.38K sh | $65.26M | -8.5% | -17.1% | — | ||||
| 13F | Artisan Partners Limited Partnership | Added | +1.68M sh | $683.67M | -8.5% | -17.1% | — | ||||
| 13F | Artisan Partners Limited Partnership | Added | +1.68M sh | $631.32M | -8.5% | -17.1% | — |
1W / 1M / 6M = how INSM moved from the trade or filing date.
Insider trading in INSM: who is buying and selling
| Insider | Role | Trades | Open-market net | Shares held | Last trade |
|---|---|---|---|---|---|
| William Lewis | Chair and CEO | 2 | -$2.21M | Jun 25, 2026 | |
| Samuele Butera | SVP, GM, Global Respiratory | 1 | — | Jun 23, 2026 | |
| Smith Michael Alexander | Chief Legal Officer | 1 | -$173.05K | Jun 22, 2026 |
Members of Congress trading INSM
Institutions moving INSM (13F)
Analyst ratings on INSM
Frequently asked questions
Are INSM insiders buying or selling?
Over the last 12 months 0 insiders made 0 open-market purchases worth $0 and 2 insiders made 2 open-market sales worth $2.38M, a net -$2.38M.
What is the latest insider trade in INSM?
William Lewis, Chair and CEO filed a sell (open-market sale) of 21.40K sh worth $2.21M on Jun 25, 2026.
Which members of Congress traded INSM?
1 disclosed trade by Josh Gottheimer. The latest was on Jun 10, 2026.
Which institutions changed their INSM positions?
Recent 13F filers moving the stock include Artisan Partners Limited Partnership, Burney Co/, Baker Bros. Advisors and Gw&K Investment Management.
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Data comes from public SEC Form 4 and 13F filings and STOCK Act disclosures. Dates are the trade or filing date reported. This page is for research only and is not investment advice.
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