Form 4 for INSM INSMED Inc
Accepted 2026-01-06 00:00:00 ET · period of report 2026-01-02 · accession 0001796960-26-000002 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DM | 2026-01-06 | 2026-01-05 | INSM | Flammer Martina M.D. | Chief Medical Off | S - Sale+OE | $171.38 | -12.3K | 95.5K | -11% | -$2.11M |
| DM | 2026-01-06 | 2026-01-05 | INSM | Flammer Martina M.D. | Chief Medical Off | M - OptEx | $25.80 | +12.3K | 99.1K | +14% | +$317.5K |
| DM | 2026-01-06 | 2026-01-02 | INSM | Flammer Martina M.D. | Chief Medical Off | A - Grant | — | +11.6K | 89.1K | +15% | — |
| DM | 2026-01-06 | 2026-01-05 | INSM | Flammer Martina M.D. | Chief Medical Off | M - OptEx | $0.00 | -12.3K | 31.8K | -28% | $0 |
| D | 2026-01-06 | 2026-01-02 | INSM | Flammer Martina M.D. | Chief Medical Off | A - Grant | $0.00 | +31.3K | 31.3K | New | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2026-01-05 | S | D | 3,205 | $170.61 | 101,053 | D | — | — | (F6) This is the weighted average sales price representing 3,205 shares sold at prices ranging from $169.91 to $170.90 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. |
| 2 | Common | Common Stock | 2026-01-05 | S | D | 2,836 | $171.19 | 98,217 | D | — | — | (F7) This is the weighted average sales price representing 2,836 shares sold at prices ranging from $170.91 to $171.89 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. |
| 3 | Common | Common Stock | 2026-01-05 | S | D | 286 | $171.92 | 97,931 | D | — | — | |
| 4 | Common | Common Stock | 2026-01-05 | S | D | 1,820 | $173.45 | 96,111 | D | — | — | (F8) This is the weighted average sales price representing 1,820 shares sold at prices ranging from $173.05 to $173.87 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. |
| 5 | Common | Common Stock | 2026-01-05 | S | D | 702 | $175.73 | 94,754 | D | — | — | (F10) This is the weighted average sales price representing 702 shares sold at prices ranging from $175.54 to $176.12 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. |
| 6 | Common | Common Stock | 2026-01-05 | S | D | 2,799 | $169.29 | 104,258 | D | — | — | (F5) This is the weighted average sales price representing 2,799 shares sold at prices ranging from $168.88 to $169.69 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. |
| 7 | Common | Common Stock | 2026-01-05 | M | A | 7,945 | $29.13 | 107,057 | D | — | — | |
| 8 | Common | Common Stock | 2026-01-05 | M | A | 4,358 | $19.74 | 99,112 | D | — | — | |
| 9 | Common | Common Stock | 2026-01-02 | A | A | 5,645 | — | 94,754 | D | — | — | (F3) Represents RSUs, each representing a contingent right to receive one share of Common Stock, granted pursuant to the Company's Amended and Restated 2019 Incentive Plan, as amended. The RSUs vest in full on February 1, 2029. (F2) Each RSU was granted on January 2, 2026 for no consideration. |
| 10 | Common | Common Stock | 2026-01-02 | A | A | 5,998 | — | 89,109 | D | — | — | (F1) Represents Restricted Stock Units (RSUs), each representing a contingent right to receive one share of Common Stock, granted pursuant to the Company's Amended and Restated 2019 Incentive Plan, as amended. The RSUs vest as follows: 25% on the first day of the first month following the first anniversary of the date of grant (the Initial Vesting Date) and 25% on each anniversary of the Initial Vesting Date until fully vested. (F2) Each RSU was granted on January 2, 2026 for no consideration. |
| 11 | Common | Common Stock | 2026-01-05 | S | D | 655 | $174.28 | 95,456 | D | — | — | (F9) This is the weighted average sales price representing 655 shares sold at prices ranging from $174.20 to $174.43 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. |
| 12 | Derivative | Stock Option (right to buy) | 2026-01-05 | M | D | 4,358 | $0.00 | 8,715 | D | $19.74 · — to 2033-01-05 | 4,358 Common Stock | (F12) 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. |
| 13 | Derivative | Stock Option (right to buy) | 2026-01-02 | A | A | 31,280 | $0.00 | 31,280 | D | $177.12 · — to 2036-01-02 | 31,280 Common Stock | (F11) These stock options were granted under the Company's Amended and Restated 2019 Incentive Plan, as amended. The options become exercisable based on the following vesting schedule: 25% vest on the Initial Vesting Date and an additional 12.5% vest every six months thereafter until fully vested. |
| 14 | Derivative | Stock Option (right to buy) | 2026-01-05 | M | D | 7,945 | $0.00 | 31,780 | D | $29.13 · — to 2034-01-04 | 7,945 Common Stock | (F12) 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. |