| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
Chair and CEO | Director | Chair & CEO +4 more
2 companies
William Lewis is Chair and CEO at INSM, with reported holdings spanning 2 companies. From February 2016 to July 2026, the filings on record show 2 open-market purchases and 60 sales. William Lewis's net worth is not public. Form 4 filings only show shares in the companies where this person is an insider; those holdings are worth an estimated $27.3M at current prices.
Our model assigns William Lewis a middling insider score of 50/100, based on 69 past trades. Over a 12-month horizon, 31.1% of those trades were profitable, with an average 12-month return of -44.6%.
William Lewis's largest disclosed position is in INSM as Chair and CEO, worth about $27.1M. The INSM filings lean toward selling, a net 2,283,180 shares.
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| Apr 1, 2025 | INSM Insmed Inc | Chair and CEO | Sale+OE10b5-1 | 6,830 | $73.58 | $502,577.03 | -2.8% | +39.8% | +129.0% | |
| Mar 17, 2025 | INSM Insmed Inc | Chair and CEO | Sale+OE10b5-1 | 25,580 | $77.03 | $1,970,420.71 | -9.9% | +30.6% | +85.1% | |
| Mar 3, 2025 | INSM Insmed Inc | Chair and CEO | Sale+OE10b5-1 | 25,580 | $77.79 | $1,989,796.50 | -9.9% | -6.0% | +92.6% | |
| Feb 18, 2025 | INSM Insmed Inc | Chair and CEO | Sale+OE10b5-1 | 25,580 | $81.03 | $2,072,721.15 | -9.9% | -16.6% | +85.7% | |
| Feb 6, 2025 | INSM Insmed Inc | Chair and CEO | Sell | 79,350 | $80.90 | $6,419,415.00 | -14.9% | -15.5% | +85.5% | |
| Feb 3, 2025 | INSM Insmed Inc | Chair and CEO | Sale+OE10b5-1 | 25,580 | $77.94 | $1,993,731.16 | -9.9% | -6.8% | +101.8% | |
| Jan 15, 2025 | INSM Insmed Inc | Chair and CEO | Sale+OE10b5-1 | 38,635 | $70.18 | $2,711,456.32 | -14.2% | +1.2% | +126.9% | |
| Jan 10, 2025 | INSM Insmed Inc | Chair and CEO | Sell | 15,195 | $65.48 | $995,012.48 | -3.7% | -0.7% | +169.7% | |
| Jan 2, 2025 | INSM Insmed Inc | Chair and CEO | Sale+OE10b5-1 | 25,580 | $69.85 | $1,786,643.80 | -9.9% | +5.0% | +153.2% | |
| Dec 19, 2024 | INSM Insmed Inc | Chair and CEO | Sale+OE10b5-1 | 25,580 | $69.91 | $1,788,349.36 | -9.9% | +13.7% | +151.9% |