Insmed Inc (INSM) CMO sells 27,173 shares after option exercises
Rhea-AI Filing Summary
Insmed Inc’s Chief Medical Officer, Martina Flammer, exercised stock options for 27,173 shares of common stock on August 6, 2026 and sold the same number of shares, in transactions effected under a Rule 10b5-1 trading plan adopted on February 27, 2025.
The options covered 18,278 shares at $18.95 and 8,895 shares at $25.83. Related sales were 8,895 shares at $127.00 and 18,278 shares at a weighted average $129.40 within a $129.40–$129.41 range.
Positive
- None.
Negative
- None.
Insider Trade Summary 10b5-1
Exercise and Sale: 27,173 shares ($2.92M approx. pre-tax spread)
Exercise and Sale
6 txns
Insider
Flammer Martina M.D.
Role
Chief Medical Officer
Sold
27,173 shs ($3.49M)
Approx. gross sale proceeds
$3.49M
Approx. exercise cost
$576K
Approx. pre-tax spread
$2.92M
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Exercise | Stock Option (right to buy) F1, F3 | 18,278 | $0.00 | $0.00 |
| Exercise | Stock Option (right to buy) F1, F4 | 8,895 | $0.00 | $0.00 |
| Exercise | Common Stock F1 | 18,278 | $18.95 | $346K |
| Exercise | Common Stock F1 | 8,895 | $25.83 | $230K |
| Sale | Common Stock F1 | 8,895 | $127.00 | $1.13M |
| Sale | Common Stock F1, F2 | 18,278 | $129.40 | $2.37M |
Holdings After Transaction:
Stock Option (right to buy) — 72,135 shares (Direct);
Common Stock — 60,486 shares (Direct)
Footnotes (4)
- F1. This transaction was effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person on February 27, 2025 in accordance with Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.
- F2. This is the weighted average sales price representing 18,278 shares sold at prices ranging from $129.40 to $129.41 per share. The Reporting Person undertakes to provide to the SEC staff, the issuer, or a security holder of the issuer the number of shares sold at each price within the price range upon request.
- F3. The options become exercisable based on the following vesting schedule: 25% vest on the first anniversary of the grant date and an additional 12.5% vest on each sixth month anniversary date thereafter through the fourth anniversary of the date of grant.
- F4. The options become exercisable based on the following vesting schedule: 25% vest on the first day of the first month following the first anniversary of the date of grant (the Initial Vesting Date) and 12.5% vest on each sixth month anniversary date thereafter through the fourth anniversary of the Initial Vesting Date.
Key Figures
Options exercised: 27,173 shares
Exercise price for 18,278 options: $18.95 per share
Exercise price for 8,895 options: $25.83 per share
+2 more
5 metrics
Options exercised
27,173 shares
Total shares underlying options exercised on August 6, 2026
Exercise price for 18,278 options
$18.95 per share
Conversion price for 18,278 option shares exercised into common stock
Exercise price for 8,895 options
$25.83 per share
Conversion price for 8,895 option shares exercised into common stock
Shares sold at $127.00
8,895 shares
Common shares sold at $127.00 per share on August 6, 2026
Shares sold at weighted avg $129.40
18,278 shares
Shares sold at weighted average $129.40 within a $129.40–$129.41 range
Key Terms
Rule 10b5-1 trading plan, weighted average sales price, vesting schedule, Stock Option (right to buy)
4 terms
Rule 10b5-1 trading plan regulatory
"This transaction was effected pursuant to a 10b5-1 trading plan adopted..."
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
weighted average sales price financial
"This is the weighted average sales price representing 18,278 shares sold..."
vesting schedule financial
"The options become exercisable based on the following vesting schedule..."
A vesting schedule is a timeline that determines when someone gains full ownership of certain benefits, such as company stock or retirement contributions. Think of it like earning the right to own a gift gradually over time, rather than receiving it all at once. It matters to investors because it affects when they can fully access or sell these benefits, influencing their financial planning and decision-making.
Stock Option (right to buy) financial
"security_title: Stock Option (right to buy) for derivative entries"
AI-generated analysis. How Rhea-AI works. Not financial advice.
FAQ
What did Insmed (INSM) disclose in Martina Flammer’s latest insider transaction?
Insmed reported that CMO Martina Flammer exercised options for 27,173 shares and sold 27,173 common shares on August 6, 2026. All of these transactions were carried out under a pre-arranged Rule 10b5-1 trading plan adopted on February 27, 2025.
How many Insmed (INSM) stock options did Martina Flammer exercise and at what prices?
Martina Flammer exercised options covering 27,173 shares of Insmed common stock. This included 18,278 shares at an exercise price of $18.95 per share and 8,895 shares at $25.83 per share, all on August 6, 2026.
At what prices did Insmed’s CMO sell INSM common stock in this Form 4?
Flammer sold 8,895 shares at $127.00 per share and 18,278 shares at a weighted average price of $129.40, within a $129.40–$129.41 range. These sales matched the shares received from option exercises on August 6, 2026.
Was the INSM insider transaction executed under a Rule 10b5-1 trading plan?
Yes. The filing states the trades were effected under a Rule 10b5-1 trading plan adopted by Martina Flammer on February 27, 2025. The document’s 10b5-1 checkbox is also affirmed, indicating all reported transactions followed that pre-arranged plan.
What vesting terms applied to the Insmed stock options in this insider filing for INSM?
The options referenced vest in stages: one grant vests 25% on the first anniversary of grant, then 12.5% every six months through year four. Another grant vests 25% after an initial vesting date, then 12.5% every six months through its fourth anniversary.