Insmed Incorporated
US ˙ NasdaqGS ˙ US4576693075

SecurityINSM / Insmed Incorporated
InstitutionFmr Llc
Latest Disclosed Ownership13,145,166 shares
Ownership 6.10%
Fmr Llc ownership in INSM / Insmed Incorporated

2026-05-06 - Fmr Llc has filed an SCHEDULE 13G form with the Securities and Exchange Commission (SEC) disclosing ownership of 13,145,166 shares of Insmed Incorporated (US:INSM). This represents 6.1 percent ownership of the company. In their previous filing dated 2022-02-09 , Fmr Llc had reported owning 3,557,538 shares, indicating an increase of 269.50 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date		Effective
Date		Form Prev
Shares		 Latest
Shares		 ΔShares
(Percent)		 Ownership
(Percent)		 ΔOwnership
(Percent)
2026-05-06 2026-05-06 13G 3,557,538 13,145,166 269.50 6.10 103.00
2022-02-09 2022-02-09 13G/A 5,969,955 3,557,538 -40.41 3.00 -48.13
2021-04-12 2021-04-12 13G/A 12,088,544 5,969,955 -50.61 5.79 -51.18
2021-02-08 2021-02-08 13G/A 13,401,528 12,088,544 -9.80 11.87 -20.89
2020-02-07 2020-02-07 13G/A 11,563,534 13,401,528 15.89 15.00 0.00
2019-02-13 2019-02-13 13G/A 11,488,651 11,563,534 0.65 15.00 0.00
2018-02-13 2018-02-13 13G/A 9,281,685 11,488,651 23.78 15.00 0.00
2017-02-14 2017-02-14 13G/A 9,270,562 9,281,685 0.12 15.00 0.00
2016-02-12 2016-02-12 13G/A 9,270,562 15.00
2015-02-13 2015-02-13 13G/A 7,449,749 15.00
2014-01-10 2014-01-10 13G/A 5,866,478 15.00
2013-08-12 2013-08-12 13G/A 3,798,566 9.76
2013-03-11 2013-03-11 13G/A 4,700,346 14.99
2013-02-14 2013-02-14 13G/A 2,818,594 8.99
2012-11-13 2012-11-13 13G/A 4,000,652 12.76
2012-02-14 2012-02-14 13G/A 1,881,752 7.58

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F INSMED COM PAR $.01 457669307 13,160,167 3,232,231 32.56 2,151,950 24.54 0.0225
2026-02-17 2025-12-31 13F INSMED COM PAR $.01 457669307 9,927,936 746,973 8.14 1,727,858 30.69 0.0881
2025-11-13 2025-09-30 13F INSMED COM PAR $.01 457669307 9,180,963 4,087,702 80.26 1,322,151 157.94 0.0687
2025-08-14 2025-06-30 13F INSMED COM PAR $.01 457669307 5,093,261 1,698,877 50.05 512,586 97.94 0.0289
2025-05-12 2025-03-31 13F INSMED COM PAR $.01 457669307 3,394,384 -1,461,865 -30.10 258,958 -22.76 0.0165
2025-02-13 2024-12-31 13F INSMED COM PAR $.01 457669307 4,856,249 -2,335,269 -32.47 335,275 -36.14 0.0200
2024-11-13 2024-09-30 13F INSMED COM PAR $.01 457669307 7,191,518 -113,612 -1.56 524,981 7.26 0.0319
2024-08-13 2024-06-30 13F INSMED COM PAR $.01 457669307 7,305,130 -2,013,764 -21.61 489,444 93.59 0.0313
2024-05-13 2024-03-31 13F INSMED COM PAR $.01 457669307 9,318,894 4,227,280 83.02 252,822 60.23 0.0170
2024-02-13 2023-12-31 13F INSMED COM PAR $.01 457669307 5,091,614 786,660 18.27 157,789 45.16 0.0121
2023-11-13 2023-09-30 13F INSMED COM PAR $.01 457669307 4,304,954 221,659 5.43 108,700 26.17 0.0094
2023-08-11 2023-06-30 13F INSMED COM PAR $.01 457669307 4,083,295 496,295 13.84 86,158 40.88 0.0072
2023-08-11 2023-03-31 13F/A-1 INSMED COM PAR $.01 457669307 3,587,000 -181,407 -4.81 61,158 -18.77 0.0056
2023-05-11 2023-03-31 13F INSMED COM PAR $.01 457669307 3,587,000 -181,407 61,158 0.0011
2023-02-13 2022-12-31 13F INSMED COM PAR $.01 457669307 3,768,407 221,101 6.23 75,293 -1.46 0.0075
2022-11-10 2022-09-30 13F INSMED COM PAR $.01 457669307 3,547,306 118,820 3.47 76,408 13.01 0.0080
2022-08-12 2022-06-30 13F INSMED COM PAR $.01 457669307 3,428,486 63,548 1.89 67,609 -14.50 0.0067
2022-05-13 2022-03-31 13F INSMED COM PAR $.01 457669307 3,364,938 -180,293 -5.09 79,076 -18.12 0.0063
2022-02-14 2021-12-31 13F INSMED COM PAR $.01 457669307 3,545,231 -456,863 -11.42 96,572 -12.38 0.0071
2022-02-14 2021-09-30 13F/A-1 INSMED COM PAR $.01 457669307 4,002,094 -333,312 -7.69 110,218 -10.67 0.0087
2021-11-15 2021-09-30 13F INSMED COM PAR $.01 457669307 4,002,094 -333,312 110,218 0.0087
2021-08-13 2021-06-30 13F INSMED COM PAR $.01 457669307 4,335,406 -1,634,550 -27.38 123,385 -39.32 0.0097
2021-05-14 2021-03-31 13F INSMED COM PAR $.01 457669307 5,969,956 -6,118,588 -50.61 203,336 -49.47 0.0174
2021-02-08 2020-12-31 13F INSMED COM PAR $.01 457669307 12,088,544 -3,133,562 -20.59 402,427 -17.74 0.0358
2020-11-13 2020-09-30 13F INSMED COM PAR $.01 457669307 15,222,106 288,225 1.93 489,239 18.96 0.0495
2020-08-24 2020-06-30 13F/A-1 INSMED COM PAR $.01 457669307 14,933,881 1,467,747 10.90 411,279 90.53 0.0452
2020-08-13 2020-06-30 13F INSMED COM PAR $.01 457669307 14,933,881 1,467,747 411,279 45,221.6000
2020-05-14 2020-03-31 13F INSMED COM PAR $.01 457669307 13,466,134 64,606 0.48 215,863 -32.55 0.0299
2020-02-07 2019-12-31 13F INSMED COM PAR $.01 457669307 13,401,528 659,239 5.17 320,028 42.38 0.0353
2019-11-13 2019-09-30 13F INSMED COM PAR $.01 457669307 12,742,289 2,153,573 20.34 224,773 -17.08 0.0270
2019-08-13 2019-06-30 13F INSMED COM PAR $.01 457669307 10,588,716 -1,042,068 -8.96 271,071 -19.83 0.0317
2019-05-13 2019-03-31 13F INSMED COM PAR $.01 457669307 11,630,784 67,250 0.58 338,107 122.86 0.0405
2019-02-13 2018-12-31 13F INSMED COM PAR $.01 457669307 11,563,534 7,406 0.06 151,714 -35.07 0.0208
2018-11-09 2018-09-30 13F INSMED COM PAR $.01 457669307 11,556,128 62,658 0.55 233,666 -14.04 0.0263
2018-08-10 2018-06-30 13F INSMED COM PAR $.01 457669307 11,493,470 779 0.01 271,820 5.02 0.0321
2018-05-14 2018-03-31 13F INSMED COM PAR $.01 457669307 11,492,691 4,040 0.04 258,816 -27.75 0.0307
2018-02-12 2017-12-31 13F INSMED COM PAR $.01 457669307 11,488,651 13,717 0.12 358,216 0.02 0.0420
2017-11-13 2017-09-30 13F INSMED COM PAR $.01 457669307 11,474,934 2,171,118 23.34 358,133 124.32 0.0433
2017-08-29 2017-06-30 13F/A-1 INSMED COM PAR $.01 457669307 9,303,816 299 0.00 159,653 -2.00 0.0198
2017-08-11 2017-06-30 13F INSMED COM PAR $.01 457669307 9,303,816 299 159,653
2017-05-11 2017-03-31 13F INSMED COM PAR $.01 457669307 9,303,517 21,832 0.24 162,905 32.66 0.0207
2017-02-10 2016-12-31 13F INSMED COM PAR $.01 457669307 9,281,685 0 0.00 122,796 -8.88 0.0164
2016-11-14 2016-09-30 13F INSMED COM PAR $.01 457669307 9,281,685 848,911 10.07 134,770 62.09 0.0179
2016-08-11 2016-06-30 13F INSMED COM PAR $.01 457669307 8,432,774 -845,858 -9.12 83,147 -29.27 0.0113
2016-05-16 2016-03-31 13F INSMED COM PAR $.01 457669307 9,278,632 8,070 0.09 117,561 -30.13 0.0163
2016-02-12 2015-12-31 13F INSMED COM PAR $.01 457669307 9,270,562 6,523 0.07 168,260 -2.19 0.0226
2015-11-10 2015-09-30 13F INSMED COM PAR $.01 457669307 9,264,039 38,774 0.42 172,033 -23.64 0.0245
2015-08-25 2015-06-30 13F/A-1 INSMED COM PAR $.01 457669307 9,225,265 607,751 7.05 225,281 25.68 0.0289
2015-08-13 2015-06-30 13F INSMED COM PAR $.01 457669307 9,225,265 225,281
2015-05-14 2015-03-31 13F INSMED COM PAR $.01 457669307 8,617,514 1,167,765 15.68 179,245 55.53 0.0228
2015-02-17 2014-12-31 13F INSMED COM PAR $.01 457669307 7,449,749 223,291 3.09 115,248 22.21 0.0150
2014-11-14 2014-09-30 13F INSMED COM PAR $.01 457669307 7,226,458 1,335,583 22.67 94,305 -19.88 0.0128
2014-08-14 2014-06-30 13F INSMED COM PAR $.01 457669307 5,890,875 1,439 0.02 117,700 4.96 0.0158
2014-05-15 2014-03-31 13F INSMED COM PAR $.01 457669307 5,889,436 23,000 0.39 112,135 12.37 0.0156
2014-02-13 2013-12-31 13F INSMED COM PAR $.01 457669307 5,866,436 715,249 13.89 99,788 24.10 0.0141
2013-11-14 2013-09-30 13F INSMED COM PAR $.01 457669307 5,151,187 1,393,647 37.09 80,410 78.93 0.0123
2013-09-24 2013-06-30 13F/A-1 INSMED COM PAR $.01 457669307 3,757,540 3,757,540 44,940 0.0074
2013-08-14 2013-06-30 13F INSMED COM PAR $.01 457669307 3,757,540 44,940 0.0074
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.