William Lewis sold $2.0M of INSM
Chair and CEO at INSMED Inc. 13,396 shares at an average of $147.79, traded Feb 9, 2026, filed Feb 11, 2026.
Score components
- +25RoleCEO
- +25Trade size$2.0M at market
- 0Share of holdings soldSold 4.3% of holdings
- +15Cluster5 insiders selling within 14 days
- -15Exercise and sellShares came from an option exercise in the same filing
- -2010b5-1 planPre-scheduled under a 10b5-1 plan
What happened after comparable sells
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
This signal so far: 1m -6.0%, 3m -20.5%, 6m -10.9%.
Price around the trade, and since
From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™
Rows in this filing
Every transaction in Form 4 0001402051-26-000013, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Feb 9, 2026 | MOption exercise Common Stock10b5-1 | +4,440 | $17.16 | $76k | 308,322 | Feb 11, 2026 |
| Feb 9, 2026 | MOption exercise Common Stock10b5-1 | +6,259 | $30.46 | $191k | 314,581 | Feb 11, 2026 |
| Feb 9, 2026 | SOpen-market sale Common Stock10b5-1 | -4,888 | $147.17 | $719k | 309,693 | Feb 11, 2026 |
| Feb 9, 2026 | SOpen-market sale Common Stock10b5-1 | -7,221 | $148.02 | $1.1M | 302,472 | Feb 11, 2026 |
| Feb 9, 2026 | SOpen-market sale Common Stock10b5-1 | -1,287 | $148.83 | $192k | 301,185 | Feb 11, 2026 |
| Feb 9, 2026 | MOption exercise Stock Option (right to buy)derivative10b5-1 | -4,440 | $0.00 | $0 | 48,840 | Feb 11, 2026 |
| Feb 9, 2026 | MOption exercise Stock Option (right to buy)derivative10b5-1 | -6,259 | $0.00 | $0 | 68,850 | Feb 11, 2026 |
Related signals
Other insiders at INSMED Inc and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 50Moderate | INSMsell INSMED Inc | David R Brennan director | $3.1M 25,000 shares | -39% | |
| 23Weak | INSMED Inc | William Lewis Chair and CEO | $2.2M 21,398 shares | -8% | |
| 14Weak | INSMED Inc | Michael Alexander Smith Chief Legal Officer | $173k 1,806 shares | -5% | |
| 40Moderate | INSMED Inc | William Lewis Chair and CEO | $613k 6,515 shares | -2% | |
| 48Moderate | INSMED Inc | Roger Adsett Chief Operating Officer | $242k 2,370 shares | -2% | |
| 50Moderate | INSMED Inc | Sara Bonstein Chief Financial Officer | $246k 2,404 shares | -3% | |
| 27Weak | INSMED Inc | Martina Flammer M.D. Chief Medical Officer | $455k 4,424 shares | -7% | |
| 62Notable | INSMED Inc | William Lewis Chair and CEO | $778k 7,605 shares | -3% | |
| 42Moderate | INSMED Inc | Michael Alexander Smith Chief Legal Officer | $221k 2,159 shares | -5% | |
| 35Weak | INSMED Inc | Michael Alexander Smith Chief Legal Officer | $667k 6,149 shares | -13% |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.