Martina M.D. Flammer insider trades: INSMED (INSM) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Martina reports to the SEC
Open-market buys and sales
38 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Aug 6, 2026 | INSM | ↓ Sell | 27,173 | $128.61 | $3.5M | Direct | Aug 7, 2026 (1d) |
| Jul 6, 2026 | INSM | ↓ Sell | 12,302 | $109.98 | $1.4M | Direct | Jul 8, 2026 (2d) |
| May 14, 2026 | INSM | ↓ Sell | 18,333 | $116.12 | $2.1M | Direct | May 15, 2026 (1d) |
| May 11, 2026 | INSM | ↓ Sell | 12,949 | $100.40 | $1.3M | Direct | May 13, 2026 (2d) |
| Feb 5, 2026 | INSM | ↓ Sell | 869 | $152.44 | $132K | Direct | Feb 6, 2026 (1d) |
| Feb 3, 2026 | INSM | ↓ Sell | 8,777 | $154.70 | $1.4M | Direct | Feb 4, 2026 (1d) |
| Jan 9, 2026 | INSM | ↓ Sell | 1,887 | $186.19 | $351K | Direct | Jan 13, 2026 (4d) |
| Jan 8, 2026 | INSM | ↓ Sell | 16,530 | $174.06 | $2.9M | Direct | Jan 8, 2026 (0d) |
| Jan 5, 2026 | INSM | ↓ Sell | 12,303 | $171.38 | $2.1M | Direct | Jan 6, 2026 (1d) |
| Dec 1, 2025 | INSM | ↓ Sell | 8,895 | $206.98 | $1.8M | Direct | Dec 3, 2025 (2d) |
| Nov 11, 2025 | INSM | ↓ Sell | 31,226 | $189.68 | $5.9M | Direct | Nov 13, 2025 (2d) |
| Sep 2, 2025 | INSM | ↓ Sell | 186,648 | $144.34 | $26.9M | Direct | Sep 4, 2025 (2d) |
| Aug 4, 2025 | INSM | ↓ Sell | 8,715 | $109.50 | $954K | Direct | Aug 6, 2025 (2d) |
| Jun 11, 2025 | INSM | ↓ Sell | 45,163 | $91.16 | $4.1M | Direct | Jun 12, 2025 (1d) |
| Jun 3, 2025 | INSM | ↓ Sell | 1,686 | $71.50 | $121K | Direct | Jun 4, 2025 (1d) |
| May 16, 2025 | INSM | ↓ Sell | 11,724 | $65.79 | $771K | Direct | May 19, 2025 (3d) |
| May 14, 2025 | INSM | ↓ Sell | 10,152 | $67.43 | $685K | Direct | May 15, 2025 (1d) |
| Feb 10, 2025 | INSM | ↓ Sell | 37,828 | $78.61 | $3.0M | Direct | Feb 12, 2025 (2d) |
| Feb 7, 2025 | INSM | ↓ Sell | 33,115 | $80.90 | $2.7M | Direct | Feb 7, 2025 (0d) |
| Jan 14, 2025 | INSM | ↓ Sell | 1,384 | $68.72 | $95K | Direct | Jan 16, 2025 (2d) |
| Jan 10, 2025 | INSM | ↓ Sell | 11,218 | $64.70 | $726K | Direct | Jan 10, 2025 (0d) |
| Sep 16, 2024 | INSM | ↓ Sell | 41,040 | $74.91 | $3.1M | Direct | Sep 16, 2024 (0d) |
| Sep 6, 2024 | INSM | ↓ Sell | 149,002 | $71.23 | $10.6M | Direct | Sep 10, 2024 (4d) |
| Jun 10, 2024 | INSM | ↓ Sell | 21,195 | $60.00 | $1.3M | Direct | Jun 12, 2024 (2d) |
| May 30, 2024 | INSM | ↓ Sell | 125,001 | $50.53 | $6.3M | Direct | May 30, 2024 (0d) |
| May 17, 2024 | INSM | ↓ Sell | 4,642 | $25.09 | $116K | Direct | May 17, 2024 (0d) |
| May 14, 2024 | INSM | ↓ Sell | 10,640 | $25.47 | $271K | Direct | May 15, 2024 (1d) |
| Jan 12, 2024 | INSM | ↓ Sell | 4,667 | $28.63 | $134K | Direct | Jan 12, 2024 (0d) |
| Jan 10, 2024 | INSM | ↓ Sell | 5,960 | $28.99 | $173K | Direct | Jan 11, 2024 (1d) |
| Jan 5, 2024 | INSM | ↓ Sell | 1,386 | $29.20 | $40K | Direct | Jan 5, 2024 (0d) |
| Dec 22, 2023 | INSM | ↓ Sell | 28,310 | $30.00 | $849K | Direct | Dec 22, 2023 (0d) |
| Jun 13, 2023 | INSM | ↓ Sell | 8,868 | $19.27 | $171K | Direct | Jun 15, 2023 (2d) |
| May 16, 2023 | INSM | ↓ Sell | 4,294 | $18.94 | $81K | Direct | May 17, 2023 (1d) |
| Jan 10, 2023 | INSM | ↓ Sell | 3,439 | $18.06 | $62K | Direct | Jan 12, 2023 (2d) |
| Jan 5, 2023 | INSM | ↓ Sell | 1,374 | $19.73 | $27K | Direct | Jan 6, 2023 (1d) |
| May 16, 2022 | INSM | ↓ Sell | 1,574 | $18.51 | $29K | Direct | May 18, 2022 (2d) |
| Jan 11, 2022 | INSM | ↓ Sell | 1,495 | $25.11 | $38K | Direct | Jan 13, 2022 (2d) |
| Jan 5, 2022 | INSM | ↓ Sell | 1,423 | $27.61 | $39K | Direct | Jan 7, 2022 (2d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other INSM insiders
Open-market trades in the last 12 months
About Martina M.D. Flammer's insider trades
Martina M.D. Flammer is Chief Medical Officer at INSMED (INSM). Since Jan 5, 2022, Martina has reported no open-market purchases and 38 sales worth $86.2M on SEC Form 4. In the last 12 months: 11 sales ($22.9M).
Their filings also include option exercises (16 filings), grants and awards (14 filings), shares withheld for taxes (1 filing). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every INSM insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.