Insmed Incorporated
US ˙ NasdaqGS ˙ US4576693075

SecurityINSM / Insmed Incorporated
InstitutionDeerfield Management Company, L.p. (series C)
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Deerfield Management Company, L.p. (series C) closes position in INSM / Insmed Incorporated

On February 17, 2026 - Deerfield Management Company, L.p. (series C) filed a 13F-HR form disclosing ownership of 0 shares of Insmed Incorporated (US:INSM) valued at $0 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 14, 2025 disclosing 471,000 shares of Insmed Incorporated. The current value of the position is $0 USD.

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.

Upgrade to unlock premium data and export to Excel .

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)
2026-02-17 2025-12-31 13F INSMED COM PAR $.01 457669307 0 -100.00 0
2025-11-14 2025-09-30 13F INSMED COM PAR $.01 457669307 471,000 -229,700 -32.78 67,829 -3.81 1.0354
2025-08-14 2025-06-30 13F INSMED COM PAR $.01 457669307 700,700 242,700 52.99 70,518 101.83 1.2799
2025-05-15 2025-03-31 13F INSMED COM PAR $.01 457669307 458,000 458,000 34,941 0.6899
2025-02-14 2024-12-31 13F INSMED COM PAR $.01 457669307 0 -52,861 -100.00 0 -100.00
2024-11-14 2024-09-30 13F INSMED COM PAR $.01 457669307 52,861 41,502 365.37 3,859 406.96 0.0577
2024-08-14 2024-06-30 13F INSMED COM PAR $.01 457669307 11,359 11,359 761 0.0127
2023-11-14 2023-09-30 13F INSMED COM PAR $.01 457669307 0 -658,546 -100.00 0 -100.00
2023-08-14 2023-06-30 13F INSMED COM PAR $.01 457669307 658,546 0 0.00 13,895 23.75 0.2966
2023-05-15 2023-03-31 13F INSMED COM PAR $.01 457669307 658,546 -5,600 -0.84 11,228 -15.38 0.2503
2023-02-14 2022-12-31 13F INSMED COM PAR $.01 457669307 664,146 -296,338 -30.85 13,270 -35.86 0.2747
2022-11-14 2022-09-30 13F INSMED COM PAR $.01 457669307 960,484 0 0.00 20,689 9.23 0.4118
2022-08-15 2022-06-30 13F INSMED COM PAR $.01 457669307 960,484 655,912 215.36 18,941 164.65 0.3907
2022-05-16 2022-03-31 13F INSMED COM PAR $.01 457669307 304,572 304,572 7,157 0.1600
2021-11-15 2021-09-30 13F INSMED COM PAR $.01 457669307 0 -200,000 -100.00 0 -100.00
2021-08-16 2021-06-30 13F INSMED COM PAR $.01 457669307 200,000 200,000 5,692 0.1011
2015-11-16 2015-09-30 13F INSMED COM PAR $.01 457669307 0 -891,546 -100.00 0 -100.00
2015-08-14 2015-06-30 13F INSMED COM PAR $.01 457669307 891,546 -736,985 -45.25 21,772 -35.72 0.7253
2015-05-15 2015-03-31 13F INSMED COM PAR $.01 457669307 1,628,531 -613,100 -27.35 33,873 -2.32 1.0975
2015-02-17 2014-12-31 13F INSMED COM PAR $.01 457669307 2,241,631 161,471 7.76 34,678 27.75 1.2458
2014-11-14 2014-09-30 13F INSMED COM PAR $.01 457669307 2,080,160 874,926 72.59 27,146 12.73 0.9895
2014-08-14 2014-06-30 13F INSMED COM PAR $.01 457669307 1,205,234 -810,913 -40.22 24,081 -37.27 0.9684
2014-05-15 2014-03-31 13F INSMED COM PAR $.01 457669307 2,016,147 963,902 91.60 38,387 114.60 1.5672
2014-02-14 2013-12-31 13F INSMED COM PAR $.01 457669307 1,052,245 121,495 13.05 17,888 23.12 0.9267
2013-11-14 2013-09-30 13F INSMED COM PAR $.01 457669307 930,750 376,957 68.07 14,529 119.37 0.6758
2013-08-14 2013-06-30 13F INSMED COM PAR $.01 457669307 553,793 553,793 6,623 0.3122
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.