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 7 of 10
96 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2021-12-28 | INSM | Mixed | — | -$1.36M | EDGAR |
| 2021-10-01 | INSM | Mixed | — | -$2.32M | EDGAR |
| 2021-05-18 | INSM | Tax (F) | −6,481 | -$170.0K | EDGAR |
| 2021-05-14 | INSM | Grant (A) | +28,344 | $0 | EDGAR |
| 2021-03-18 | INSM | Mixed | — | -$1.64M | EDGAR |
| 2021-01-08 | INSM | Grant (A) | +22,039 | $0 | EDGAR |
| 2021-01-06 | INSM | Tax (F) | −7,218 | -$240.7K | EDGAR |
| 2021-01-06 | INSM | Mixed | — | $0 | EDGAR |
| 2020-12-23 | INSM | Mixed | — | -$1.66M | EDGAR |
| 2020-11-06 | INSM | Mixed | +28,639 | -$5.79M | 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.