William Lewis
CIK 1402051 · Chair and CEO · last filed 2026-06-10
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
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Disclosed Exposure
$48.42M
Companies
4
Total Filings
96
Lifetime Open-Market Net
-$115.62M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| INSM | Chair and CEO | 492,841 | $97.85 | $48.22M | -$115.62M | 91 | 2026-06-10 |
| NAMSW | Director | 10,360 | $18.80 | $194.8K | $0 | 3 | 2026-01-09 |
| QURE | Director | — | $27.57 | — | $0 | 1 | 2017-01-31 |
| Aegerion Pharmaceuticals, Inc. (AEGR) Delisted | President, PFO and Treasurer | 73,960 | — | — | $0 | 1 | 2010-10-27 |
Recent Filings · Page 5 of 10
96 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2024-12-20 | INSM | Mixed | — | -$1.29M | EDGAR |
| 2024-12-13 | INSM | Mixed | — | -$1.37M | EDGAR |
| 2024-05-15 | INSM | Mixed | +20,509 | -$566.5K | EDGAR |
| 2024-02-29 | INSM | Exer (M) | +50,000 | $629.0K | EDGAR |
| 2024-01-10 | INSM | Mixed | −9,887 | -$688.4K | EDGAR |
| 2024-01-08 | NAMSW | Grant (A) | — | $0 | EDGAR |
| 2024-01-05 | INSM | Mixed | +30,890 | -$204.2K | EDGAR |
| 2023-10-31 | INSM | Mixed | +500 | -$1.09M | EDGAR |
| 2023-05-17 | INSM | Sell (S) | −16,861 | -$313.3K | EDGAR |
| 2023-05-15 | INSM | Mixed | +327,063 | $2.91M | EDGAR |
Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.