Form 4: INSMED Executive Sells Shares
Insider Transaction (Form 4)
Martina M.D. Flammer, Chief Medical Officer of INSMED Inc, sold 27,173 shares of common stock on August 6, 2026.
Summary
- Option exercise/conversion: acquired 18,278 Common Stock at $18.95 ($346,368) on August 6, 2026; holds 78,764 after (Direct).
- Option exercise/conversion: acquired 8,895 Common Stock at $25.83 ($229,758) on August 6, 2026; holds 87,659 after (Direct).
- Open-market sale: disposed of 8,895 Common Stock at $127.00 ($1,129,665) on August 6, 2026; holds 78,764 after (Direct).
- Open-market sale: disposed of 18,278 Common Stock at $129.40 ($2,365,173) on August 6, 2026; holds 60,486 after (Direct).
- Option exercise/conversion: disposed of 18,278 Stock Option (right to buy) on August 6, 2026; holds 36,555 after (Direct).
- Option exercise/conversion: disposed of 8,895 Stock Option (right to buy) on August 6, 2026; holds 35,580 after (Direct).
Sentiment
Score: 4
Explanation: StockSavvy.ai views this as a mildly negative but low-conviction signal: an insider sold $3,494,838 of stock under a pre-arranged Rule 10b5-1 plan, which is typically routine.
Insider Transactions
Martina M.D. Flammer — Officer (Chief Medical Officer)
Transaction made under a Rule 10b5-1 trading plan.
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-08-06 | Option exercise/conversion | Common Stock | 18,278 | $19 | $346.4K | 78,764 |
| 2026-08-06 | Option exercise/conversion | Common Stock | 8,895 | $26 | $229.8K | 87,659 |
| 2026-08-06 | Open-market sale | Common Stock | 8,895 | $127 | $1.1M | 78,764 |
| 2026-08-06 | Open-market sale | Common Stock | 18,278 | $129 | $2.4M | 60,486 |
| 2026-08-06 | Option exercise/conversion | Stock Option (right to buy) | 18,278 | — | — | 36,555 |
| 2026-08-06 | Option exercise/conversion | Stock Option (right to buy) | 8,895 | — | — | 35,580 |
Key Dates
| Date | Description |
|---|---|
| 2026-08-06 | Option exercise/conversion (18,278 shares) |
| 2026-08-06 | Option exercise/conversion (8,895 shares) |
| 2026-08-06 | Open-market sale (8,895 shares) |
| 2026-08-06 | Open-market sale (18,278 shares) |
| 2026-08-06 | Option exercise/conversion (18,278 shares) |
| 2026-08-06 | Option exercise/conversion (8,895 shares) |
Keywords
insider transaction, Form 4, INSM, INSMED Inc, bearish, Martina M.D. Flammer
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