Lewis William - Insider Non-Derivative Transactions at INSMED Inc (INSM) - (SEC)
Updated on January 3, 2026.
According to recent SEC insider information filed on Dec 18, 2025, Lewis William's relationship to INSMED Inc (INSM) is Director,Officer (Chair and CEO), and currently has 314,610 shares of Common Stock.
The chart below shows the number of shares owned, and the table shows the recent insider transactions.
You can see similar information for other INSM insiders.
Related Topics: SEC Topic List.
Data Source: SEC.
Lewis William - Insider Non-Derivative Transactions of INSM Common Stock
Lewis William - Insider Non-Derivative Transactions at INSM
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| Date | Transaction | No. of Shares | Price Per Share | Shares Owned After Transactions |
|---|---|---|---|---|
| Dec 19, 2025 | Sell -- (Common Stock) | 51 | 171.2 | 303911 |
| Dec 19, 2025 | Sell -- (Common Stock) | 362 | 170.26 | 303962 |
| Dec 19, 2025 | Sell -- (Common Stock) | 1938 | 169.58 | 304324 |
| Dec 19, 2025 | Sell -- (Common Stock) | 2175 | 168.54 | 306262 |
| Dec 19, 2025 | M -- (Common Stock) | 4440 | 17.16 | 308351 |
| Dec 19, 2025 | Sell -- (Common Stock) | 1431 | 167.29 | 308437 |
| Dec 19, 2025 | Sell -- (Common Stock) | 1783 | 166.6 | 309868 |
| Dec 19, 2025 | Sell -- (Common Stock) | 697 | 165.21 | 311651 |
| Dec 19, 2025 | Sell -- (Common Stock) | 447 | 164.24 | 312348 |
| Dec 19, 2025 | Sell -- (Common Stock) | 1465 | 163.19 | 312795 |
| Dec 19, 2025 | Sell -- (Common Stock) | 350 | 162.26 | 314260 |
| Dec 19, 2025 | M -- (Common Stock) | 6259 | 30.46 | 314610 |
| Dec 5, 2025 | Sell -- (Common Stock) | 1040 | 207.42 | 303911 |
| Dec 5, 2025 | Sell -- (Common Stock) | 2921 | 206.49 | 304951 |
| Dec 5, 2025 | Sell -- (Common Stock) | 2222 | 205.66 | 307872 |
| Dec 5, 2025 | Sell -- (Common Stock) | 4516 | 204.62 | 310094 |
| Dec 5, 2025 | M -- (Common Stock) | 6259 | 30.46 | 310170 |
| Dec 5, 2025 | M -- (Common Stock) | 4440 | 17.16 | 314610 |
| Aug 19, 2025 | Sell -- (Common Stock) | 1416 | 129.47 | 233924 |
| Aug 19, 2025 | Sell -- (Common Stock) | 2481 | 128.76 | 235340 |
| Aug 19, 2025 | Sell -- (Common Stock) | 2968 | 127.59 | 237821 |
| Aug 19, 2025 | M -- (Common Stock) | 6865 | 10.85 | 240789 |
| Aug 5, 2025 | Sell -- (Common Stock) | 1938 | 110.91 | 233924 |
| Aug 5, 2025 | Sell -- (Common Stock) | 3199 | 109.68 | 235862 |
| Aug 5, 2025 | Sell -- (Common Stock) | 1693 | 108.8 | 239061 |
| Aug 5, 2025 | M -- (Common Stock) | 6830 | 10.85 | 240754 |
| Jul 16, 2025 | Sell -- (Common Stock) | 170 | 103.32 | 233924 |
| Jul 16, 2025 | Sell -- (Common Stock) | 4492 | 102.66 | 234094 |
| Jul 16, 2025 | Sell -- (Common Stock) | 2168 | 101.71 | 238586 |
| Jul 16, 2025 | M -- (Common Stock) | 6830 | 10.85 | 240754 |
| Jul 2, 2025 | Sell -- (Common Stock) | 815 | 99.61 | 233924 |
| Jul 2, 2025 | Sell -- (Common Stock) | 2349 | 98.83 | 234739 |
| Jul 2, 2025 | Sell -- (Common Stock) | 3666 | 97.73 | 237088 |
| Jul 2, 2025 | M -- (Common Stock) | 6830 | 10.85 | 240754 |
| Jun 17, 2025 | Sell -- (Common Stock) | 41784 | 101.23 | 233924 |
| Jun 17, 2025 | Sell -- (Common Stock) | 48531 | 100.54 | 275708 |
| Jun 17, 2025 | Sell -- (Common Stock) | 904 | 101.39 | 303554 |
| Jun 17, 2025 | Sell -- (Common Stock) | 2300 | 100.7 | 304458 |
| Jun 17, 2025 | Sell -- (Common Stock) | 1558 | 99.65 | 306758 |
| Jun 17, 2025 | Sell -- (Common Stock) | 442 | 98.51 | 308316 |
| Jun 17, 2025 | Sell -- (Common Stock) | 32490 | 99.51 | 324239 |
| Jun 17, 2025 | Sell -- (Common Stock) | 7000 | 98.5 | 356729 |
| Jun 17, 2025 | M -- (Common Stock) | 129805 | 10.85 | 363729 |
| Jun 4, 2025 | Sell -- (Common Stock) | 5472 | 71.5 | 308758 |
| Jun 3, 2025 | Sell -- (Common Stock) | 1430 | 71.94 | 233924 |
| Jun 3, 2025 | Sell -- (Common Stock) | 4400 | 71.35 | 235354 |
| Jun 3, 2025 | Sell -- (Common Stock) | 1000 | 70.23 | 239754 |
| Jun 3, 2025 | M -- (Common Stock) | 6830 | 10.85 | 240754 |
| May 21, 2025 | Sell -- (Common Stock) | 1716 | 68.54 | 233924 |
| May 21, 2025 | Sell -- (Common Stock) | 2251 | 68.13 | 235640 |
| May 21, 2025 | Sell -- (Common Stock) | 2863 | 66.9 | 237891 |
| May 21, 2025 | M -- (Common Stock) | 6830 | 10.85 | 240754 |
| May 21, 2025 | Sell -- (Common Stock) | 7088 | 68.49 | 314230 |
| May 21, 2025 | Sell -- (Common Stock) | 4480 | 67.96 | 321318 |
| May 21, 2025 | Sell -- (Common Stock) | 9489 | 66.87 | 325798 |
| May 16, 2025 | Acquisition -- (Common Stock) | 22314 | 0 | 335287 |
| May 15, 2025 | Sell -- (Common Stock) | 3771 | 65.61 | 312973 |
| May 14, 2025 | Sell -- (Common Stock) | 7699 | 67.7 | 316744 |
| May 14, 2025 | Sell -- (Common Stock) | 9743 | 66.4 | 324443 |
| May 2, 2025 | Sell -- (Common Stock) | 4201 | 72.78 | 233924 |
| May 2, 2025 | Sell -- (Common Stock) | 2629 | 72.24 | 238125 |
| May 2, 2025 | M -- (Common Stock) | 6830 | 10.85 | 240754 |
| Apr 16, 2025 | Sell -- (Common Stock) | 600 | 71.3 | 233924 |
| Apr 16, 2025 | Sell -- (Common Stock) | 2896 | 70.54 | 234524 |
| Apr 16, 2025 | Sell -- (Common Stock) | 3334 | 69.62 | 237420 |
| Apr 16, 2025 | M -- (Common Stock) | 6830 | 10.85 | 240754 |
| Apr 2, 2025 | Sell -- (Common Stock) | 805 | 75.26 | 233924 |
| Apr 2, 2025 | Sell -- (Common Stock) | 2232 | 74.78 | 234729 |
| Apr 2, 2025 | Sell -- (Common Stock) | 772 | 73.44 | 236961 |
| Apr 2, 2025 | Sell -- (Common Stock) | 3021 | 72.29 | 237733 |
| Apr 2, 2025 | M -- (Common Stock) | 6830 | 10.85 | 240754 |
| Mar 18, 2025 | Sell -- (Common Stock) | 2737 | 77.83 | 233924 |
| Mar 18, 2025 | Sell -- (Common Stock) | 2070 | 77.01 | 236661 |
| Mar 18, 2025 | Sell -- (Common Stock) | 2023 | 76 | 238731 |
| Mar 18, 2025 | M -- (Common Stock) | 6830 | 10.85 | 240754 |
| Mar 18, 2025 | Sell -- (Common Stock) | 8116 | 77.79 | 334186 |
| Mar 18, 2025 | Sell -- (Common Stock) | 5907 | 76.87 | 342302 |
| Mar 18, 2025 | Sell -- (Common Stock) | 4727 | 75.91 | 348209 |
| Mar 18, 2025 | M -- (Common Stock) | 18750 | 22.76 | 352936 |
| Mar 4, 2025 | Sell -- (Common Stock) | 46 | 80.9 | 233924 |
| Mar 4, 2025 | Sell -- (Common Stock) | 377 | 79.73 | 233970 |
| Mar 4, 2025 | Sell -- (Common Stock) | 2250 | 78.97 | 234347 |
| Mar 4, 2025 | Sell -- (Common Stock) | 1486 | 78.2 | 236597 |
| Mar 4, 2025 | Sell -- (Common Stock) | 2671 | 76.23 | 238083 |
| Mar 4, 2025 | M -- (Common Stock) | 6830 | 10.85 | 240754 |
| Mar 4, 2025 | Sell -- (Common Stock) | 127 | 80.9 | 334186 |
| Mar 4, 2025 | Sell -- (Common Stock) | 2785 | 79.43 | 334313 |
| Mar 4, 2025 | Sell -- (Common Stock) | 7763 | 78.61 | 337098 |
| Mar 4, 2025 | Sell -- (Common Stock) | 758 | 77.75 | 344861 |
| Mar 4, 2025 | Sell -- (Common Stock) | 7317 | 76.24 | 345619 |
| Mar 4, 2025 | M -- (Common Stock) | 18750 | 22.76 | 352936 |
| Feb 19, 2025 | Sell -- (Common Stock) | 300 | 81.81 | 233924 |
| Feb 19, 2025 | Sell -- (Common Stock) | 6074 | 81.07 | 234224 |
| Feb 19, 2025 | Sell -- (Common Stock) | 456 | 80 | 240298 |
| Feb 19, 2025 | M -- (Common Stock) | 6830 | 10.85 | 240754 |
| Feb 19, 2025 | Sell -- (Common Stock) | 754 | 81.67 | 334186 |
| Feb 19, 2025 | Sell -- (Common Stock) | 16743 | 81.08 | 334940 |
| Feb 19, 2025 | Sell -- (Common Stock) | 1253 | 79.95 | 351683 |
| Feb 19, 2025 | M -- (Common Stock) | 18750 | 22.76 | 352936 |
| Feb 7, 2025 | Sell -- (Common Stock) | 79350 | 80.9 | 453894 |
| Feb 6, 2025 | Acquisition -- (Common Stock) | 153710 | 0 | 533244 |
| Feb 4, 2025 | Sell -- (Common Stock) | 2581 | 78.4 | 233924 |
| Feb 4, 2025 | Sell -- (Common Stock) | 3463 | 77.95 | 236505 |
| Feb 4, 2025 | Sell -- (Common Stock) | 745 | 76.43 | 239968 |
| Feb 4, 2025 | Sell -- (Common Stock) | 41 | 74.86 | 240713 |
| Feb 4, 2025 | M -- (Common Stock) | 6830 | 10.85 | 240754 |
| Feb 4, 2025 | Sell -- (Common Stock) | 6768 | 78.44 | 379534 |
| Feb 4, 2025 | Sell -- (Common Stock) | 9869 | 77.97 | 386302 |
| Feb 4, 2025 | Sell -- (Common Stock) | 1872 | 76.35 | 396171 |
| Feb 4, 2025 | Sell -- (Common Stock) | 241 | 75.25 | 398043 |
| Feb 4, 2025 | M -- (Common Stock) | 18750 | 22.76 | 398284 |
| Jan 16, 2025 | Sell -- (Common Stock) | 631 | 71.01 | 233924 |
| Jan 16, 2025 | Sell -- (Common Stock) | 4700 | 70.31 | 234555 |
| Jan 16, 2025 | Sell -- (Common Stock) | 1499 | 69.4 | 239255 |
| Jan 16, 2025 | M -- (Common Stock) | 6830 | 10.85 | 240754 |
| Jan 16, 2025 | Sell -- (Common Stock) | 2473 | 71.05 | 379534 |
| Jan 16, 2025 | Sell -- (Common Stock) | 22696 | 70.32 | 382007 |
| Jan 16, 2025 | Sell -- (Common Stock) | 6636 | 69.39 | 404703 |
| Jan 16, 2025 | M -- (Common Stock) | 18750 | 22.76 | 411339 |
| Jan 11, 2025 | Sell -- (Common Stock) | 2978 | 63.36 | 392589 |
| Jan 9, 2025 | Sell -- (Common Stock) | 3999 | 65.96 | 372743 |
| Jan 9, 2025 | Acquisition -- (Common Stock) | 22824 | 0 | 395567 |
| Jan 8, 2025 | Sell -- (Common Stock) | 8218 | 66.02 | 376742 |
| Jan 3, 2025 | Sell -- (Common Stock) | 6830 | 69.86 | 233924 |
| Jan 3, 2025 | M -- (Common Stock) | 6830 | 10.85 | 240754 |
| Jan 3, 2025 | Sell -- (Common Stock) | 18750 | 69.84 | 384960 |
| Jan 3, 2025 | M -- (Common Stock) | 18750 | 22.76 | 403710 |
| Dec 20, 2024 | Sell -- (Common Stock) | 1590 | 70.61 | 233924 |
| Dec 20, 2024 | Sell -- (Common Stock) | 5240 | 69.71 | 235514 |
| Dec 20, 2024 | M -- (Common Stock) | 6830 | 10.85 | 240754 |
| Dec 20, 2024 | Sell -- (Common Stock) | 5588 | 70.52 | 384960 |
| Dec 20, 2024 | Sell -- (Common Stock) | 13162 | 69.65 | 390548 |
| Dec 20, 2024 | M -- (Common Stock) | 18750 | 22.76 | 403710 |
| Dec 13, 2024 | Sell -- (Common Stock) | 181 | 74.22 | 233924 |
| Dec 13, 2024 | Sell -- (Common Stock) | 2562 | 73.55 | 234105 |
| Dec 13, 2024 | Sell -- (Common Stock) | 4087 | 72.57 | 236667 |
| Dec 13, 2024 | M -- (Common Stock) | 6830 | 10.85 | 240754 |
| Dec 13, 2024 | Sell -- (Common Stock) | 399 | 74.23 | 384960 |
| Dec 13, 2024 | Sell -- (Common Stock) | 6847 | 73.56 | 385359 |
| Dec 13, 2024 | Sell -- (Common Stock) | 11504 | 72.58 | 392206 |
| Dec 13, 2024 | M -- (Common Stock) | 18750 | 22.76 | 403710 |
| May 15, 2024 | Sell -- (Common Stock) | 22198 | 25.52 | 384125 |
| May 14, 2024 | Acquisition -- (Common Stock) | 42707 | 0 | 406323 |
| Feb 29, 2024 | M -- (Common Stock) | 50000 | 12.58 | 50500 |
| Jan 10, 2024 | Sell -- (Common Stock) | 9887 | 28.72 | 363651 |
| Jan 9, 2024 | Sell -- (Common Stock) | 24951 | 29.11 | 373538 |
| Jan 9, 2024 | Sell -- (Common Stock) | 20169 | 29.88 | 373538 |
| Jan 9, 2024 | M -- (Common Stock) | 20169 | 20.49 | 393707 |
| Jan 9, 2024 | M -- (Common Stock) | 24951 | 20.49 | 398489 |
| Jan 6, 2024 | Sell -- (Common Stock) | 6979 | 29.26 | 373538 |
| Jan 5, 2024 | Acquisition -- (Common Stock) | 37869 | 0 | 380517 |
| Oct 28, 2023 | Sell -- (Common Stock) | 53363 | 24.04 | 0 |
| Oct 28, 2023 | Sell -- (Common Stock) | 1322 | 25.08 | 0 |
| Oct 28, 2023 | Sell -- (Common Stock) | 315 | 26 | 0 |
| Oct 28, 2023 | M -- (Common Stock) | 315 | 14.24 | 315 |
| Oct 28, 2023 | M -- (Common Stock) | 500 | 14.24 | 500 |
| Oct 28, 2023 | M -- (Common Stock) | 1322 | 14.24 | 1322 |
| Oct 28, 2023 | M -- (Common Stock) | 53363 | 14.24 | 53363 |
| Oct 28, 2023 | Sell -- (Common Stock) | 327 | 26 | 233924 |
| Oct 28, 2023 | Sell -- (Common Stock) | 55350 | 24.04 | 233924 |
| Oct 28, 2023 | Sell -- (Common Stock) | 1323 | 25.05 | 233924 |
| Oct 28, 2023 | M -- (Common Stock) | 327 | 14.24 | 234251 |
| Oct 28, 2023 | M -- (Common Stock) | 1323 | 14.24 | 235247 |
| Oct 28, 2023 | M -- (Common Stock) | 55350 | 14.24 | 289274 |
| May 18, 2023 | Sell -- (Common Stock) | 7099 | 18.12 | 341345 |
| May 17, 2023 | Sell -- (Common Stock) | 3714 | 18.41 | 348444 |
| May 16, 2023 | Sell -- (Common Stock) | 6048 | 19.23 | 352158 |
| May 13, 2023 | M -- (Common Stock) | 67257 | 12.44 | 67257 |
| May 13, 2023 | M -- (Common Stock) | 83333 | 12.44 | 150590 |
| May 13, 2023 | M -- (Common Stock) | 83334 | 12.44 | 233924 |
| May 12, 2023 | Acquisition -- (Common Stock) | 93139 | 0 | 358206 |
| Jan 11, 2023 | Sell -- (Common Stock) | 6994 | 18 | 265067 |
| Jan 6, 2023 | Sell -- (Common Stock) | 7008 | 19.8 | 249708 |
| Jan 6, 2023 | Acquisition -- (Common Stock) | 22353 | 0 | 272061 |
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