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Insider ActivityINSM
Lewis William, Chair and CEO, Director at INSMED Inc, sold $853K of INSM
Updated Jun 20, 2026
Lewis William
Chair and CEO, Director
INSMED Inc ·
$INSM
Transaction Details
| Insider | Lewis William |
|---|---|
| Title | Chair and CEO, Director |
| Company | INSMED Inc |
| Ticker | INSM |
| Transaction Type | Sale |
| Transaction Date | 2026-05-18 |
| Shares Traded | 7,975 |
| Price Per Share | $106.97 |
| Total Value | $853K |
| Filed Date | 2026-05-20 |
| Accession Number | 0001402051-26-000030 |
Ownership Context
| Shares Owned After Transaction | 273,037 |
|---|---|
| Ownership Type | Direct |
SEC Filing
Accession: 0001402051-26-000030
Other Insider Trades — INSM
| Insider | Title | Action | Value | Date |
|---|---|---|---|---|
| Lewis William | Chair and CEO, Director | sold | $613K | 2026-06-08 |
| Flammer Martina M.D. | Chief Medical Officer | sold | $193K | 2026-06-05 |
| Adsett Roger | Chief Operating Officer | sold | $242K | 2026-06-03 |
| Bonstein Sara | Chief Financial Officer | sold | $246K | 2026-06-03 |
| Flammer Martina M.D. | Chief Medical Officer | sold | $262K | 2026-06-03 |
| Lewis William | Chair and CEO, Director | sold | $778K | 2026-06-03 |
| Smith Michael Alexander | Chief Legal Officer | sold | $221K | 2026-06-03 |
| Smith Michael Alexander | Chief Legal Officer | sold | $667K | 2026-05-22 |
| Lewis William | Chair and CEO, Director | sold | $606K | 2026-05-18 |
| Lewis William | Chair and CEO, Director | sold | $1.3M | 2026-05-18 |
Other Trades by Lewis William
| Ticker | Company | Action | Value | Date |
|---|---|---|---|---|
| INSM | INSMED Inc | sold | $613K | 2026-06-08 |
| INSM | INSMED Inc | sold | $778K | 2026-06-03 |
| INSM | INSMED Inc | traded | $76K | 2026-05-18 |
| INSM | INSMED Inc | sold | $1.3M | 2026-05-18 |
| INSM | INSMED Inc | traded | $191K | 2026-05-18 |
| INSM | INSMED Inc | sold | $606K | 2026-05-18 |
| INSM | INSMED Inc | sold | $1.5M | 2026-05-13 |
| INSM | INSMED Inc | sold | $53K | 2026-05-04 |
| INSM | INSMED Inc | sold | $58K | 2026-05-04 |
| INSM | INSMED Inc | traded | $191K | 2026-05-04 |
Full Ticker Profile
View all insider trades, dark pool activity, congressional filings, and the Whisper Score for INSM — INSMED Inc →
Whisper Score — INSM
26.38
Murmurs
Current Whisper Score
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Data sourced from SEC Form 4 insider trading filings. Transaction details are as reported to the Securities and Exchange Commission. This page does not constitute financial advice. StonkWhisper presents public records — it does not verify or guarantee the accuracy of SEC filings.
Last updated: June 20, 2026 at 07:11 UTC