Insmed

INSM13F as of Jun 30, 2026 · next update ~Nov 14

Limited coverage

Only 1 fund we track owns this stock, so quarterly sentiment and aggregates may be sparse.

Who's buying INSM

Top funds mostly added to Insmed in Q2 (Apr⁠–⁠Jun)

Buying:

Funds1InsidersCongress

Top funds
1 of 1 bought more, 0 sold some. Largest: Maverick Capital, $229.3M (2% of its portfolio).
Insiders
No buys, 59 sales in 12 months.
Congress
No buys, 1 sale in 12 months.

1 fund$229.3M held2.1% avg. weightQ2: 1 bought / 0 sold

13F reports are a snapshot as of Jun 30, 2026; funds may have traded since. Insiders often sell for personal reasons (taxes, diversification, planned sales).

Share price · market data, not from 13F reports

Q2 2026

Insider trades (Form 4)

Last 2 years · 132 filings

Net buying$344.28M

Date	Insider	Type	Shares	Price	Value
Sep 9, 2026	David R Brennan Director	Sold	25,000	$124.00	$3.10M
Aug 17, 2026	Melvin MD Sharoky Director	Sold	5,000	$127.53	$638K
Aug 10, 2026	Roger Adsett COO	Sold	239,850	$133.27	$31.96M
Aug 6, 2026	Martina M.d. Flammer	Sold	27,173	$128.61	$3.49M
Jul 23, 2026	William Lewis Chair & CEO	Sold	10,700	$106.07	$1.13M
Jul 9, 2026	William Lewis Chair & CEO	Sold	10,699	$117.40	$1.26M
Jul 6, 2026	Martina M.d. Flammer	Sold	12,302	$109.98	$1.35M
Jun 25, 2026	William Lewis Chair & CEO	Sold	21,398	$103.32	$2.21M
Jun 22, 2026	Michael Alexander Smith	Sold	1,806	$95.82	$173K
Jun 8, 2026	William Lewis Chair & CEO	Sold	6,515	$94.03	$613K
Jun 3, 2026	Roger Adsett COO	Sold	2,370	$102.27	$242K
Jun 3, 2026	Sara Bonstein CFO	Sold	2,404	$102.27	$246K
Jun 3, 2026	Michael Alexander Smith	Sold	2,159	$102.27	$221K
Jun 3, 2026	William Lewis Chair & CEO	Sold	7,605	$102.27	$778K
Jun 3, 2026	Martina M.d. Flammer	Sold	4,424	$102.90	$455K
May 22, 2026	Michael Alexander Smith	Sold	6,149	$108.47	$667K
May 18, 2026	William Lewis Chair & CEO	Sold	25,564	$106.33	$2.72M
May 13, 2026	Sara Bonstein CFO	Sold	8,272	$116.18	$961K
May 13, 2026	Roger Adsett COO	Sold	5,837	$116.18	$678K
May 13, 2026	Martina M.d. Flammer	Sold	18,333	$116.12	$2.13M
May 13, 2026	Michael Alexander Smith	Sold	4,109	$116.18	$477K
May 13, 2026	William Lewis Chair & CEO	Sold	13,283	$116.18	$1.54M
May 11, 2026	Martina M.d. Flammer	Sold	12,949	$100.40	$1.30M
May 4, 2026	William Lewis Chair & CEO	Sold	10,699	$137.34	$1.47M
Apr 16, 2026	William Lewis Chair & CEO	Sold	10,699	$143.97	$1.54M
Apr 6, 2026	William Lewis Chair & CEO	Sold	10,699	$163.22	$1.75M
Apr 1, 2026	Roger Adsett COO	Sold	88,060	$164.63	$14.50M
Mar 30, 2026	Michael Alexander Smith	Sold	19,638	$150.98	$2.96M
Mar 19, 2026	William Lewis Chair & CEO	Sold	10,699	$143.52	$1.54M
Mar 5, 2026	William Lewis Chair & CEO	Sold	10,699	$146.03	$1.56M
Feb 24, 2026	Michael Alexander Smith	Sold	24,774	$155.77	$3.86M
Feb 19, 2026	William Lewis Chair & CEO	Sold	10,699	$150.97	$1.62M
Feb 9, 2026	William Lewis Chair & CEO	Sold	13,396	$147.79	$1.98M
Feb 5, 2026	Martina M.d. Flammer	Sold	869	$152.44	$132K
Feb 3, 2026	Roger Adsett COO	Sold	791	$156.17	$124K
Feb 3, 2026	Sara Bonstein CFO	Sold	748	$156.34	$117K
Feb 3, 2026	William Lewis Chair & CEO	Sold	3,009	$156.34	$470K
Feb 3, 2026	Michael Alexander Smith	Sold	640	$156.27	$100K
Feb 2, 2026	Martina M.d. Flammer	Sold	8,777	$154.70	$1.36M
Jan 20, 2026	William Lewis Chair & CEO	Sold	10,699	$158.93	$1.70M
Jan 12, 2026	William Lewis Chair & CEO	Sold	19,215	$169.00	$3.25M
Jan 9, 2026	Martina M.d. Flammer	Sold	1,887	$186.19	$351K
Jan 6, 2026	Roger Adsett COO	Sold	4,290	$174.06	$747K
Jan 6, 2026	Sara Bonstein CFO	Sold	4,642	$174.22	$809K
Jan 6, 2026	Martina M.d. Flammer	Sold	16,530	$174.06	$2.88M
Jan 6, 2026	William Lewis Chair & CEO	Sold	9,676	$174.03	$1.68M
Jan 6, 2026	Michael Alexander Smith	Sold	3,158	$174.00	$549K
Jan 5, 2026	Martina M.d. Flammer	Sold	12,303	$171.38	$2.11M
Jan 2, 2026	Orlov S Nicole Schaeffer CHRO	Sold	87,290	$175.20	$15.29M
Dec 18, 2025	William Lewis Chair & CEO	Sold	10,699	$166.97	$1.79M
Dec 5, 2025	Melvin MD Sharoky Director	Sold	20,000	$205.01	$4.10M
Dec 4, 2025	William Lewis Chair & CEO	Sold	10,699	$205.62	$2.20M
Dec 1, 2025	Martina M.d. Flammer	Sold	8,895	$206.98	$1.84M
Nov 24, 2025	Elizabeth M Anderson Director	Sold	5,000	$204.58	$1.02M
Nov 17, 2025	Leo Lee Director	Sold	75,000	$195.90	$14.69M
Nov 14, 2025	Elizabeth M Anderson Director	Sold	10,000	$195.87	$1.96M
Nov 12, 2025	Orlov S Nicole Schaeffer CHRO	Sold	30,000	$194.00	$5.82M
Nov 11, 2025	Martina M.d. Flammer	Sold	31,226	$189.68	$5.92M
Nov 3, 2025	Michael Alexander Smith	Sold	27,130	$183.78	$4.99M
Sep 12, 2025	Orlov S Nicole Schaeffer CHRO	Sold	76,520	$145.45	$11.13M
Sep 12, 2025	Melvin MD Sharoky Director	Sold	10,000	$145.39	$1.45M
Sep 2, 2025	Michael Alexander Smith	Sold	24,272	$143.89	$3.49M
Sep 2, 2025	Martina M.d. Flammer	Sold	186,648	$144.34	$26.94M
Aug 20, 2025	Melvin MD Sharoky Director	Sold	10,000	$129.50	$1.29M
Aug 19, 2025	Roger Adsett COO	Sold	25,000	$127.58	$3.19M
Aug 18, 2025	William Lewis Chair & CEO	Sold	6,865	$128.40	$881K
Aug 14, 2025	Orlov S Nicole Schaeffer CHRO	Sold	10,000	$127.34	$1.27M
Aug 12, 2025	Melvin MD Sharoky Director	Sold	10,000	$121.58	$1.22M
Aug 4, 2025	William Lewis Chair & CEO	Sold	6,830	$109.81	$750K
Aug 4, 2025	Martina M.d. Flammer	Sold	8,715	$109.50	$954K
Jul 21, 2025	Sara Bonstein CFO	Sold	58,400	$102.67	$6.00M
Jul 15, 2025	William Lewis Chair & CEO	Sold	6,830	$102.38	$699K
Jul 11, 2025	Michael Alexander Smith	Sold	1,681	$99.80	$168K
Jul 7, 2025	Sara Bonstein CFO	Sold	57,764	$95.86	$5.54M
Jul 1, 2025	William Lewis Chair & CEO	Sold	6,830	$98.33	$672K
Jun 23, 2025	Sara Bonstein CFO	Sold	57,765	$101.78	$5.88M
Jun 16, 2025	William Lewis Chair & CEO	Sold	135,009	$100.39	$13.55M
Jun 16, 2025	Roger Adsett COO	Sold	10,686	$98.82	$1.06M
Jun 10, 2025	Martina M.d. Flammer	Sold	45,163	$91.16	$4.12M
Jun 10, 2025	Orlov S Nicole Schaeffer CHRO	Sold	137,472	$92.09	$12.66M
Jun 10, 2025	Sara Bonstein CFO	Sold	57,766	$89.12	$5.15M
Jun 5, 2025	Michael Alexander Smith	Sold	1,879	$73.50	$138K
Jun 3, 2025	Michael Alexander Smith	Sold	1,448	$71.50	$104K
Jun 3, 2025	Martina M.d. Flammer	Sold	1,686	$71.50	$121K
Jun 3, 2025	Roger Adsett COO	Sold	1,860	$71.50	$133K
Jun 3, 2025	Sara Bonstein CFO	Sold	1,579	$71.50	$113K
Jun 3, 2025	Orlov S Nicole Schaeffer CHRO	Sold	1,642	$71.50	$117K
Jun 3, 2025	David W J Mcgirr Director	Sold	6,250	$72.25	$452K
Jun 2, 2025	William Lewis Chair & CEO	Sold	12,302	$71.39	$878K
May 30, 2025	Michael Alexander Smith	Sold	26,327	$69.65	$1.83M
May 20, 2025	Clarissa Desjardins Director	Bought	3,025	$66.68	$202K
May 20, 2025	William Lewis Chair & CEO	Sold	27,887	$67.66	$1.89M
May 15, 2025	Martina M.d. Flammer	Sold	11,724	$65.79	$771K
May 13, 2025	Michael Alexander Smith	Sold	4,816	$67.62	$326K
May 13, 2025	Orlov S Nicole Schaeffer CHRO	Sold	6,235	$67.37	$420K
May 13, 2025	William Lewis Chair & CEO	Sold	21,213	$66.73	$1.42M
May 13, 2025	Martina M.d. Flammer	Sold	10,152	$67.43	$685K
May 13, 2025	Sara Bonstein CFO	Sold	10,504	$67.47	$709K
May 13, 2025	Roger Adsett COO	Sold	9,407	$67.36	$634K
May 1, 2025	William Lewis Chair & CEO	Sold	6,830	$72.57	$496K
Apr 15, 2025	William Lewis Chair & CEO	Sold	6,830	$70.16	$479K
Apr 1, 2025	William Lewis Chair & CEO	Sold	6,830	$73.58	$503K
Mar 17, 2025	William Lewis Chair & CEO	Sold	25,580	$77.03	$1.97M
Mar 3, 2025	William Lewis Chair & CEO	Sold	25,580	$77.79	$1.99M
Feb 18, 2025	William Lewis Chair & CEO	Sold	25,580	$81.03	$2.07M
Feb 18, 2025	Sara Bonstein CFO	Sold	18,322	$80.31	$1.47M
Feb 11, 2025	Sara Bonstein CFO	Sold	18,321	$80.00	$1.47M
Feb 10, 2025	Roger Adsett COO	Sold	42,975	$78.61	$3.38M
Feb 10, 2025	Martina M.d. Flammer	Sold	37,828	$78.61	$2.97M
Feb 6, 2025	Martina M.d. Flammer	Sold	33,115	$80.90	$2.68M
Feb 6, 2025	Orlov S Nicole Schaeffer CHRO	Sold	23,500	$80.90	$1.90M
Feb 6, 2025	Roger Adsett COO	Sold	45,705	$80.90	$3.70M
Feb 6, 2025	William Lewis Chair & CEO	Sold	79,350	$80.90	$6.42M
Feb 6, 2025	John Drayton Wise	Sold	7,920	$80.90	$641K
Feb 6, 2025	Sara Bonstein CFO	Sold	28,390	$80.90	$2.30M
Feb 6, 2025	Michael Alexander Smith	Sold	20,650	$80.90	$1.67M
Feb 3, 2025	William Lewis Chair & CEO	Sold	25,580	$77.94	$1.99M
Jan 30, 2025	Orlov S Nicole Schaeffer CHRO	Sold	91,140	$80.00	$7.29M
Jan 14, 2025	Martina M.d. Flammer	Sold	1,384	$68.72	$95K
Jan 14, 2025	Roger Adsett COO	Sold	1,457	$68.72	$100K
Jan 14, 2025	Orlov S Nicole Schaeffer CHRO	Sold	872	$68.72	$60K
Jan 15, 2025	William Lewis Chair & CEO	Sold	38,635	$70.18	$2.71M
Jan 7, 2025	Martina M.d. Flammer	Sold	11,218	$64.70	$726K
Jan 7, 2025	Sara Bonstein CFO	Sold	6,000	$65.43	$393K
Jan 7, 2025	Orlov S Nicole Schaeffer CHRO	Sold	7,862	$64.74	$509K
Jan 7, 2025	John Drayton Wise	Sold	13,587	$65.95	$896K
Jan 7, 2025	William Lewis Chair & CEO	Sold	15,195	$65.48	$995K
Jan 7, 2025	Michael Alexander Smith	Sold	3,689	$65.82	$243K
Jan 7, 2025	Roger Adsett COO	Sold	9,228	$64.78	$598K
Jan 2, 2025	William Lewis Chair & CEO	Sold	25,580	$69.85	$1.79M
Dec 19, 2024	William Lewis Chair & CEO	Sold	25,580	$69.91	$1.79M
Dec 12, 2024	William Lewis Chair & CEO	Sold	25,580	$72.98	$1.87M