INSMNasdaq · Pharmaceutical Preparations

INSMED Inc

Alert me on INSM

Insider buys, 6 months

Congress trades, 6 months

Signals, 6 months

Six months

After each filing

Sep 12 Sale Brennan David R Insider

1 week

−3.4%S&P +1.9%

1 month

−22.8%S&P +2.5%

3 months

Result in34 trading days

6 months

Result in97 trading days

Aug 20 Sale SHAROKY MELVIN MD Insider

1 week

−3.0%S&P +1.1%

1 month

−3.3%S&P +1.7%

3 months

Result in18 trading days

6 months

Result in81 trading days

Aug 13 Sale Adsett Roger Insider

1 week

−1.0%S&P −2.0%

1 month

−0.8%S&P −2.2%

3 months

Result in13 trading days

6 months

Result in76 trading days

Aug 8 Sale Flammer Martina M.D. Insider

1 week

−4.8%S&P 0.0%

1 month

−4.4%S&P −1.4%

3 months

Result in10 trading days

6 months

Result in73 trading days

Jul 25 Sale Lewis William Insider

1 week

−6.0%S&P +2.5%

1 month

+18.3%S&P +3.6%

3 months

−10.8%S&P +3.1%

6 months

Result in63 trading days

Show all 70

Jul 11 Sale Lewis William Insider

1 week

−1.9%S&P −0.9%

1 month

+21.5%S&P +2.9%

3 months

−7.8%S&P +4.2%

6 months

Result in53 trading days

Jul 9 Sale Flammer Martina M.D. Insider

1 week

−9.1%S&P −0.1%

1 month

+10.9%S&P +2.9%

3 months

−14.0%S&P +3.6%

6 months

Result in51 trading days

Jul 7 Sale Rep. Josh Gottheimer House

1 week

−5.8%S&P +1.3%

1 month

+13.7%S&P +3.1%

3 months

−9.7%S&P +4.8%

6 months

Result in50 trading days

Jun 27 Sale Lewis William Insider

1 week

+7.7%S&P +0.9%

1 month

−1.5%S&P −1.6%

3 months

+12.3%S&P +3.6%

6 months

Result in44 trading days

Jun 25 Sale Smith Michael Alexander Insider

1 week

+6.8%S&P +1.4%

1 month

+0.2%S&P +0.7%

3 months

+16.3%S&P +4.7%

6 months

Result in42 trading days

Jun 11 Sale Lewis William Insider

1 week

−1.0%S&P +1.5%

1 month

+13.8%S&P +2.2%

3 months

+33.8%S&P +3.9%

6 months

Result in33 trading days

Jun 6 Sale Adsett Roger Insider

1 week

+3.5%S&P +2.1%

1 month

+25.6%S&P +1.9%

3 months

+32.6%S&P +3.9%

6 months

Result in30 trading days

Jun 6 Sale Bonstein Sara Insider

1 week

+3.5%S&P +2.1%

1 month

+25.6%S&P +1.9%

3 months

+32.6%S&P +3.9%

6 months

Result in30 trading days

Jun 6 Sale Smith Michael Alexander Insider

1 week

+3.5%S&P +2.1%

1 month

+25.6%S&P +1.9%

3 months

+32.6%S&P +3.9%

6 months

Result in30 trading days

Jun 6 Sale Lewis William Insider

1 week

+3.5%S&P +2.1%

1 month

+25.6%S&P +1.9%

3 months

+32.6%S&P +3.9%

6 months

Result in30 trading days

Jun 6 Sale Flammer Martina M.D. Insider

1 week

+3.5%S&P +2.1%

1 month

+25.6%S&P +1.9%

3 months

+32.6%S&P +3.9%

6 months

Result in30 trading days

May 23 Sale Smith Michael Alexander Insider

1 week

−4.7%S&P +1.2%

1 month

−4.0%S&P −1.9%

3 months

+13.8%S&P +2.3%

6 months

Result in21 trading days

May 21 Sale Lewis William Insider

1 week

−2.4%S&P +1.9%

1 month

−6.7%S&P −1.0%

3 months

+14.8%S&P +3.4%

6 months

Result in19 trading days

May 16 Sale Adsett Roger Insider

1 week

+1.6%S&P +1.6%

1 month

−8.1%S&P +0.3%

3 months

+19.9%S&P +4.2%

6 months

Result in16 trading days

May 16 Sale Smith Michael Alexander Insider

1 week

+1.6%S&P +1.6%

1 month

−8.1%S&P +0.3%

3 months

+19.9%S&P +4.2%

6 months

Result in16 trading days

May 16 Sale Bonstein Sara Insider

1 week

+1.6%S&P +1.6%

1 month

−8.1%S&P +0.3%

3 months

+19.9%S&P +4.2%

6 months

Result in16 trading days

May 16 Sale Flammer Martina M.D. Insider

1 week

+1.6%S&P +1.6%

1 month

−8.1%S&P +0.3%

3 months

+19.9%S&P +4.2%

6 months

Result in16 trading days

May 16 Sale Lewis William Insider

1 week

+1.6%S&P +1.6%

1 month

−8.1%S&P +0.3%

3 months

+19.9%S&P +4.2%

6 months

Result in16 trading days

May 14 Sale Flammer Martina M.D. Insider

1 week

−5.3%S&P −0.7%

1 month

−15.7%S&P +0.9%

3 months

+7.0%S&P +4.0%

6 months

Result in14 trading days

May 7 Sale Lewis William Insider

1 week

+10.1%S&P +2.3%

1 month

−10.3%S&P +1.0%

3 months

+24.9%S&P +6.0%

6 months

Result in9 trading days

Apr 18 Sale Lewis William Insider

1 week

−4.8%S&P +0.9%

1 month

−24.8%S&P +3.5%

3 months

−23.9%S&P +5.9%

6 months

−33.3%S&P +8.7%

Apr 9 Sale Lewis William Insider

1 week

−10.5%S&P +3.2%

1 month

−36.5%S&P +8.5%

3 months

−27.6%S&P +11.3%

6 months

−37.0%S&P +14.4%

Apr 4 Sale Adsett Roger Insider

1 week

−7.7%S&P +4.1%

1 month

−14.9%S&P +9.8%

3 months

−31.1%S&P +13.8%

6 months

−36.6%S&P +18.2%

Apr 1 Sale Smith Michael Alexander Insider

1 week

−3.2%S&P +3.8%

1 month

−19.2%S&P +10.0%

3 months

−32.3%S&P +14.0%

6 months

−34.1%S&P +17.2%

Mar 21 Sale Lewis William Insider

1 week

+6.5%S&P −3.6%

1 month

+0.3%S&P +8.5%

3 months

−29.1%S&P +12.2%

6 months

−16.1%S&P +18.6%

Mar 6 Sale Lewis William Insider

1 week

−0.4%S&P −1.5%

1 month

+16.3%S&P −1.7%

3 months

−32.8%S&P +10.0%

6 months

−9.9%S&P +15.2%

Feb 26 Sale Smith Michael Alexander Insider

1 week

−4.3%S&P −1.2%

1 month

−3.1%S&P −7.8%

3 months

−27.8%S&P +9.8%

6 months

−19.1%S&P +12.5%

Feb 24 Sale Lewis William Insider

1 week

−7.3%S&P −1.0%

1 month

−6.5%S&P −4.2%

3 months

−31.4%S&P +9.5%

6 months

−21.9%S&P +12.0%

Feb 12 Sale Lewis William Insider

1 week

+12.8%S&P +1.2%

1 month

−1.1%S&P −1.8%

3 months

−20.9%S&P +10.1%

6 months

−15.3%S&P +14.6%

Feb 7 Sale Flammer Martina M.D. Insider

1 week

+0.7%S&P −1.6%

1 month

−6.8%S&P −2.5%

3 months

−30.5%S&P +6.8%

6 months

−11.3%S&P +11.6%

Feb 5 Sale Flammer Martina M.D. Insider

1 week

−3.2%S&P +0.5%

1 month

−5.2%S&P +0.1%

3 months

−30.5%S&P +8.3%

6 months

−13.2%S&P +14.7%

Feb 5 Sale Bonstein Sara Insider

1 week

−3.2%S&P +0.5%

1 month

−5.2%S&P +0.1%

3 months

−30.5%S&P +8.3%

6 months

−13.2%S&P +14.7%

Feb 5 Sale Smith Michael Alexander Insider

1 week

−3.2%S&P +0.5%

1 month

−5.2%S&P +0.1%

3 months

−30.5%S&P +8.3%

6 months

−13.2%S&P +14.7%

Feb 5 Sale Lewis William Insider

1 week

−3.2%S&P +0.5%

1 month

−5.2%S&P +0.1%

3 months

−30.5%S&P +8.3%

6 months

−13.2%S&P +14.7%

Feb 5 Sale Adsett Roger Insider

1 week

−3.2%S&P +0.5%

1 month

−5.2%S&P +0.1%

3 months

−30.5%S&P +8.3%

6 months

−13.2%S&P +14.7%

Jan 23 Sale Lewis William Insider

1 week

+0.4%S&P +0.4%

1 month

+1.5%S&P −0.3%

3 months

−13.5%S&P +3.9%

6 months

−33.0%S&P +7.8%

Jan 14 Sale Flammer Martina M.D. Insider

1 week

−1.9%S&P −0.2%

1 month

−9.0%S&P −1.2%

3 months

−12.6%S&P +1.9%

6 months

−33.7%S&P +8.2%

Jan 14 Sale Lewis William Insider

1 week

−1.9%S&P −0.2%

1 month

−9.0%S&P −1.2%

3 months

−12.6%S&P +1.9%

6 months

−33.7%S&P +8.2%

Jan 9 Sale Flammer Martina M.D. Insider

1 week

−8.3%S&P −0.3%

1 month

−15.6%S&P −0.3%

3 months

−14.1%S&P −0.9%

6 months

−37.4%S&P +8.9%

Jan 9 Sale Bonstein Sara Insider

1 week

−8.3%S&P −0.3%

1 month

−15.6%S&P −0.3%

3 months

−14.1%S&P −0.9%

6 months

−37.4%S&P +8.9%

Jan 9 Sale Adsett Roger Insider

1 week

−8.3%S&P −0.3%

1 month

−15.6%S&P −0.3%

3 months

−14.1%S&P −0.9%

6 months

−37.4%S&P +8.9%

Jan 9 Sale Smith Michael Alexander Insider

1 week

−8.3%S&P −0.3%

1 month

−15.6%S&P −0.3%

3 months

−14.1%S&P −0.9%

6 months

−37.4%S&P +8.9%

Jan 9 Sale Lewis William Insider

1 week

−8.3%S&P −0.3%

1 month

−15.6%S&P −0.3%

3 months

−14.1%S&P −0.9%

6 months

−37.4%S&P +8.9%

Jan 7 Sale Schaeffer Orlov S Nicole Insider

1 week

−7.1%S&P +0.1%

1 month

−14.9%S&P +0.2%

3 months

−9.3%S&P −1.1%

6 months

−34.3%S&P +10.1%

Jan 7 Sale Flammer Martina M.D. Insider

1 week

−7.1%S&P +0.1%

1 month

−14.9%S&P +0.2%

3 months

−9.3%S&P −1.1%

6 months

−34.3%S&P +10.1%

Dec 20, 2025 Sale Lewis William Insider

1 week

−1.0%S&P +0.3%

1 month

−11.1%S&P +0.6%

3 months

−15.6%S&P −3.8%

6 months

−40.6%S&P +7.8%

Dec 10, 2025 Sale SHAROKY MELVIN MD Insider

1 week

+4.5%S&P −2.4%

1 month

−11.7%S&P +1.4%

3 months

−26.5%S&P −3.4%

6 months

−48.5%S&P +8.5%

Dec 6, 2025 Sale Lewis William Insider

1 week

+0.2%S&P −0.4%

1 month

−13.4%S&P +1.2%

3 months

−29.1%S&P −0.8%

6 months

−53.3%S&P +6.7%

Dec 4, 2025 Sale Flammer Martina M.D. Insider

1 week

−4.8%S&P +0.7%

1 month

−14.6%S&P +1.4%

3 months

−30.2%S&P −0.6%

6 months

−54.1%S&P +8.6%

Nov 27, 2025 Sale ANDERSON ELIZABETH M Insider

1 week

−1.8%S&P +0.3%

1 month

−16.2%S&P +0.8%

3 months

−29.2%S&P −0.2%

6 months

−50.1%S&P +11.8%

Nov 19, 2025 Sale ANDERSON ELIZABETH M Insider

1 week

+0.5%S&P +2.6%

1 month

−14.1%S&P +3.0%

3 months

−21.9%S&P +3.3%

6 months

−47.8%S&P +13.2%

Nov 19, 2025 Sale LEE LEO Insider

1 week

+0.5%S&P +2.6%

1 month

−14.1%S&P +3.0%

3 months

−21.9%S&P +3.3%

6 months

−47.8%S&P +13.2%

Nov 18, 2025 Sale Rep. Gilbert Cisneros House

1 week

+0.5%S&P +2.6%

1 month

−14.1%S&P +3.0%

3 months

−21.9%S&P +3.3%

6 months

−47.8%S&P +13.2%

Nov 15, 2025 Sale Schaeffer Orlov S Nicole Insider

1 week

+4.8%S&P +0.5%

1 month

+0.5%S&P +0.9%

3 months

−18.4%S&P +3.1%

6 months

−45.3%S&P +12.0%

Nov 14, 2025 Sale Flammer Martina M.D. Insider

1 week

+2.9%S&P −1.9%

1 month

+3.9%S&P +1.0%

3 months

−21.8%S&P +2.4%

6 months

−44.4%S&P +9.8%

Nov 6, 2025 Sale Smith Michael Alexander Insider

1 week

+2.8%S&P +0.3%

1 month

+5.9%S&P +2.0%

3 months

−19.5%S&P +3.8%

6 months

−44.0%S&P +10.9%

Oct 10, 2025 Sale Rep. Gilbert Cisneros House

1 week

+2.4%S&P +1.2%

1 month

+18.1%S&P +3.0%

3 months

−0.1%S&P +4.9%

6 months

−10.5%S&P +6.2%

Sep 16, 2025 Sale SHAROKY MELVIN MD Insider

1 week

+0.4%S&P +0.8%

1 month

+13.0%S&P +1.1%

3 months

+36.0%S&P +3.4%

6 months

−1.4%S&P +0.8%

Sep 16, 2025 Sale Schaeffer Orlov S Nicole Insider

1 week

+0.4%S&P +0.8%

1 month

+13.0%S&P +1.1%

3 months

+36.0%S&P +3.4%

6 months

−1.4%S&P +0.8%

Sep 12, 2025 Sale Rep. Gilbert Cisneros House

1 week

+1.3%S&P +1.2%

1 month

+12.7%S&P +0.5%

3 months

+37.6%S&P +3.4%

6 months

+0.6%S&P +2.1%

Sep 5, 2025 Sale Flammer Martina M.D. Insider

1 week

+0.6%S&P +1.6%

1 month

+9.1%S&P +4.1%

3 months

+41.3%S&P +6.0%

6 months

−1.4%S&P +5.4%

Sep 5, 2025 Sale Smith Michael Alexander Insider

1 week

+0.6%S&P +1.6%

1 month

+9.1%S&P +4.1%

3 months

+41.3%S&P +6.0%

6 months

−1.4%S&P +5.4%

Aug 14, 2025 Sale Rep. Gilbert Cisneros House

1 week

+3.2%S&P +0.3%

1 month

+13.3%S&P +2.6%

3 months

+49.4%S&P +4.7%

6 months

+17.8%S&P +6.7%

Jul 16, 2025 Buy Rep. Josh Gottheimer House

1 week

−0.6%S&P +1.0%

1 month

+22.7%S&P +2.5%

3 months

+57.0%S&P +6.2%

6 months

+52.9%S&P +10.9%

May 14, 2025 Sale Rep. Josh Gottheimer House

1 week

−1.6%S&P −1.2%

1 month

+51.1%S&P +2.1%

3 months

+90.1%S&P +9.3%

6 months

+184.1%S&P +14.5%

Every purchase and sale on this ticker reported by a member of Congress or an insider, measured from the close of the first trading day after it became public to the close 1 week, 1 month, 3 months and 6 months later, each beside the S&P over the same days.

Filings for INSM

174 held · newest 5174 held · newest 2

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Aeon news and offers by email

New sources, new features and offers like our founding price. A few times a month at most. Stop any time.

Signal history

No signal for this ticker yet. A signal is written when insider buying here scores one dot or more.

Stakes

Jun 30, 2026 Schedule 13G, amended

Darwin Global Management, Ltd.: 3%, 6,431,163 shares

Jun 30, 2026 Schedule 13G, amended

FMR LLC: 7.4%, 16,127,583 shares

Jun 30, 2026 Schedule 13G, amended

JPMORGAN CHASE & CO.: 4.7%, 10,365,622 shares

Mar 31, 2026 Schedule 13G, amended

Darwin Global Management, Ltd.: 7.8%, 16,805,184 shares

Mar 31, 2026 Schedule 13G

FMR LLC: 6.1%, 13,145,167 shares

Mar 31, 2026 Schedule 13G

Vanguard Capital Management: 5.3%, 11,514,893 shares

Mar 13, 2026 Schedule 13G, amended

The Vanguard Group: 0%, 0 shares

Dec 31, 2025 Schedule 13G, amended

BlackRock, Inc.: 6.6%, 14,121,445 shares

Sep 30, 2025 Schedule 13G, amended

Darwin Global Management, Ltd.: 9.7%, 20,457,445 shares

Sep 30, 2025 Schedule 13G, amended

T. Rowe Price Associates, Inc.: 3.3%, 6,932,009 shares

Aug 29, 2025 Schedule 13G, amended

JPMORGAN CHASE & CO.: 10.8%, 23,014,584 shares

Schedule 13D is filed within 5 business days of crossing 5 percent by an investor who may seek to influence the company. Schedule 13G is filed by a passive holder, and a large institution has up to 45 days after the quarter end.

Government contracts, last 12 months

Awards of $10M and up, from USAspending · context, not a signal

No contracts of $10M or more in the last 12 months.

Lobbying

Last four quarters

$10KQ4 2025

$10KQ1 2026

$30KQ2 2026

$60KQ3 2026

Up 100 percent from Q2 2026. Reported to the Senate each quarter by the firms it hires.Original report ↗

Read from LDA.gov between Sep 23, 2026 and Oct 20, 2026. Senate Office of Public Records cannot vouch for the data or analyses derived from these data after the data have been retrieved from LDA.gov.