Stocks › INSM
INSMED Inc
INSM·Nasdaq·
United States·USD
United States·USD$105.23
+1.40 (+1.35%)
Close · Oct 6, 2026 · Close Prices from Tiingo.com
INSM
INSMED Inc · Nasdaq
Nasdaq 100S&P 500
Filings
Default90D1Y5YALL
INSMS&P 500 (rebased)
Congress BuyCongress SellInsider BuyInsider SellForm 1448-K ResultsLobbying
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Daily closes, adjusted for splits and dividends · Close Prices from Tiingo.comHover a marker, every one is a filing · move across the line for the crosshair
Congressional Trades
Recent trades of INSM by members of U.S. Congress · 10 on record · 3 in the last 12 months
Whale Activity
Position changes in INSM reported for 2026-06-30 by 17 tracked institutional filers
- Increased7
- New1
- Held0
- Decreased1
- Closed1
- No prior filing7
| Filer | Shares | Value | Change |
|---|---|---|---|
| BlackRock, Inc. | 15.8M | $1.69B | decreased |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 10.4M | $1.11B | increased |
| VANGUARD CAPITAL MANAGEMENT LLC | 9.8M | $1.04B | increased |
| D. E. Shaw & Co., Inc. | 5.9M | $626.7M | increased |
| Artisan Partners Limited Partnership | 5.4M | $580.2M | — |
| CITADEL ADVISORS LLC | 2.6M | $272.6M | increased |
| MILLENNIUM MANAGEMENT LLC | 2.0M | $218.4M | increased |
| WESTFIELD CAPITAL MANAGEMENT CO LP | 1.6M | $173.7M | — |
| TWO SIGMA INVESTMENTS, LP | 1.2M | $132.4M | increased |
| SAMLYN CAPITAL, LLC | 732.6K | $78.1M | — |
| Affinity Asset Advisors, LLC | 650.0K | $69.3M | — |
| Point72 Asset Management, L.P. | 537.0K | $57.3M | new |
KeyVex tracks a curated set of large 13F filers plus the largest positions in recent filings, so this is a sample of institutional activity, not the whole market.
Insider Trading
Net shares bought (+) or sold (−) on the open market by INSM insiders, by quarter · Form 4
Recent Insider Transactions
1,326 transactions on record · newest first
| Insider | Type | Shares | Price | Value | Date | |
|---|---|---|---|---|---|---|
| Brennan David RDirector · Director | Sale | −25.0K | $124.00 | $3.1M | Sep 9, 2026 | Form 4 ↗ |
| SHAROKY MELVIN MDDirector · Director | Sale | −5,000 | $127.53 | $638K | Aug 17, 2026 | Form 4 ↗ |
| Adsett RogerChief Operating Officer | Sale | −239.8K | $133.27 | $32.0M | Aug 10, 2026 | Form 4 ↗ |
| Flammer Martina M.D.Chief Medical Officer | Sale | −8,895 | $127.00 | $1.1M | Aug 6, 2026 | Form 4 ↗ |
| Flammer Martina M.D.Chief Medical Officer | Sale | −18.3K | $129.40 | $2.4M | Aug 6, 2026 | Form 4 ↗ |
| Lewis WilliamChair and CEO · Director | Sale | −5,872 | $106.43 | $625K | Jul 23, 2026 | Form 4 ↗ |
| Lewis WilliamChair and CEO · Director | Sale | −4,828 | $105.62 | $510K | Jul 23, 2026 | Form 4 ↗ |
| Lewis WilliamChair and CEO · Director | Sale | −5,005 | $116.55 | $583K | Jul 9, 2026 | Form 4 ↗ |
| Lewis WilliamChair and CEO · Director | Sale | −3,359 | $118.52 | $398K | Jul 9, 2026 | Form 4 ↗ |
| Lewis WilliamChair and CEO · Director | Sale | −2,335 | $117.62 | $275K | Jul 9, 2026 | Form 4 ↗ |
| Flammer Martina M.D.Chief Medical Officer | Sale | −7,448 | $110.60 | $824K | Jul 6, 2026 | Form 4 ↗ |
| Flammer Martina M.D.Chief Medical Officer | Sale | −4,854 | $109.02 | $529K | Jul 6, 2026 | Form 4 ↗ |
| Lewis WilliamChair and CEO · Director | Sale | −1,292 | $106.27 | $137K | Jun 25, 2026 | Form 4 ↗ |
| Lewis WilliamChair and CEO · Director | Sale | −2,456 | $105.27 | $259K | Jun 25, 2026 | Form 4 ↗ |
| Lewis WilliamChair and CEO · Director | Sale | −3,723 | $104.28 | $388K | Jun 25, 2026 | Form 4 ↗ |
| Lewis WilliamChair and CEO · Director | Sale | −1,836 | $103.10 | $189K | Jun 25, 2026 | Form 4 ↗ |
| Lewis WilliamChair and CEO · Director | Sale | −12.1K | $102.34 | $1.2M | Jun 25, 2026 | Form 4 ↗ |
| Lewis WilliamChair and CEO · Director | Option exercise | +8,880 | $17.16 | $152K | Jun 25, 2026 | Form 4 ↗ |
| Lewis WilliamChair and CEO · Director | Option exercise | +12.5K | $30.46 | $381K | Jun 25, 2026 | Form 4 ↗ |
| Butera SamueleSVP, GM, Global Respiratory | Grant / award | +7,342 | — | — | Jun 23, 2026 | Form 4 ↗ |
Fund Holders
Mutual funds and ETFs holding INSM · SEC Form N-PORT
| Fund | Shares | Value | % of fund | As of |
|---|---|---|---|---|
| Invesco QQQ Trust, Series 1 | 4.5M | $742.5M | 0.20% | Mar 31, 2026 |
| VANGUARD TOTAL STOCK MARKET INDEX FUND VANGUARD INDEX FUNDS | 6.9M | $734.0M | 0.03% | Jun 30, 2026 |
| Growth Fund of America | 6.3M | $668.7M | 0.19% | May 31, 2026 |
| JPMorgan Large Cap Growth Fund JPMorgan Trust II | 2.8M | $297.5M | 0.24% | Jun 30, 2026 |
| VANGUARD SMALL-CAP INDEX FUND VANGUARD INDEX FUNDS | 2.5M | $265.1M | 0.14% | Jun 30, 2026 |
| VANGUARD EXTENDED MARKET INDEX FUND VANGUARD INDEX FUNDS | 2.5M | $265.0M | 0.27% | Jun 30, 2026 |
| VANGUARD MID-CAP INDEX FUND VANGUARD INDEX FUNDS | 2.3M | $250.4M | 0.11% | Jun 30, 2026 |
| VANGUARD GROWTH INDEX FUND VANGUARD INDEX FUNDS | 1.8M | $192.3M | 0.05% | Jun 30, 2026 |
| iShares Biotechnology ETF iShares Trust | 1.5M | $162.2M | 1.78% | Jun 30, 2026 |
| JPMorgan Mid Cap Growth Fund JPMorgan Trust II | 1.4M | $152.9M | 1.16% | Jun 30, 2026 |
Mutual funds and ETFs whose N-PORT filings list INSM's shares (CUSIP 457669307), each fund at its latest report since Mar 7, 2026, largest positions first. Bonds, options and short positions are left out.
Activist & Passive Stakes
Schedule 13D / 13G beneficial-ownership filings
- Darwin Global Master Fund, Ltd.SCHEDULE 13G/A · passive (13G) · 6.3M shares2.9%
Aug 14, 2026 · ↗ - Dr. Abhishek TrehanSCHEDULE 13G/A · passive (13G) · 6.4M shares3.0%
Aug 14, 2026 · ↗ - Darwin Global Management, Ltd.SCHEDULE 13G/A · passive (13G) · 6.4M shares3.0%
Aug 14, 2026 · ↗ - Abigail P. JohnsonSCHEDULE 13G/A · passive (13G) · 16.1M shares7.4%
Aug 6, 2026 · ↗ - FMR LLCSCHEDULE 13G/A · passive (13G) · 16.1M shares7.4%
Aug 6, 2026 · ↗ - JPMORGAN CHASE & CO.SCHEDULE 13G/A · passive (13G) · 10.4M shares4.7%
Jul 22, 2026 · ↗ - Darwin Global Master Fund, Ltd.SCHEDULE 13G/A · passive (13G) · 14.2M shares6.6%
May 15, 2026 · ↗ - Dr. Abhishek TrehanSCHEDULE 13G/A · passive (13G) · 16.8M shares7.8%
May 15, 2026 · ↗ - Darwin Global Management, Ltd.SCHEDULE 13G/A · passive (13G) · 16.8M shares7.8%
May 15, 2026 · ↗ - Abigail P. JohnsonSCHEDULE 13G · passive (13G) · 13.1M shares6.1%
May 6, 2026 · ↗
Corporate Lobbying
Estimated quarterly lobbying spending reported under the LDA, filings naming insmed as client
- JEFFREY J. KIMBELL & ASSOCIATES, INC.INSMED, INC. · 2026 Q2 · HCR, MMM$10K
Filing ↗ - LMH STRATEGIC SOLUTIONSINSMED INCORPORATED · 2026 Q2 · TRD$20K
Filing ↗ - LMH STRATEGIC SOLUTIONSINSMED INCORPORATED · 2026 Q2 · TRD—
Filing ↗ - JEFFREY J. KIMBELL & ASSOCIATES, INC.INSMED, INC. · 2026 Q1 · HCR, MMM$10K
Filing ↗ - JEFFREY J. KIMBELL & ASSOCIATES, INC.INSMED, INC. · 2025 Q4 · HCR, MMM$10K
Filing ↗
Government Contracts
Federal awards to insmed · USAspending
$31KAwarded · 1 contract on record
- Department of Veterans AffairsREZDIFFRA 80 MG$31K
Jun 10, 2026 · ↗
U.S. Patents
Recent USPTO applications naming INSMED Inc
No USPTO patent applications found for INSMED Inc.
Annual Financials
From INSM's 10-K filings · XBRL
No annual XBRL figures on record for INSM. KeyVex's fundamentals cover about 130 large companies so far.
Stock Splits
Every split and reverse split in the price history
- 1-for-10Reverse splitMar 3, 2011
- 1-for-4Reverse splitJul 31, 2000
Split dates and ratios from the price history · Close Prices from Tiingo.com
Material Events (8-K)
Corporate events filed with the SEC
- 8-K · Items 5.02, 7.01, 9.01Officer / director change · Reg FD disclosureOct 5, 2026
EDGAR ↗ - 8-K · Items 2.02, 9.01Results of operationsAug 6, 2026
EDGAR ↗ - 8-K · Items 7.01, 9.01Reg FD disclosureJul 16, 2026
EDGAR ↗ - 8-K · Items 5.07Shareholder voteMay 15, 2026
EDGAR ↗ - 8-K · Items 2.02, 9.01Results of operationsMay 7, 2026
EDGAR ↗
About INSMED Inc
From SEC EDGAR company records
Industry (SIC 2834)Pharmaceutical Preparations
SectorHealthcare
HeadquartersBRIDGEWATER, NJ
IncorporatedVA
SEC CIK0001104506 ↗