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Insmed (INSM) Insider Trading & Ownership

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$128.32 +4.58 (+3.70%)
As of 08/17/2026 04:00 PM Eastern

Insmed (NASDAQ:INSM) Insider Buying and Selling Activity

Current
Insider Ownership
Percentage
2.10%
Number Of
Insiders Buying
(Last 12 Months)
0
Number Of
Insiders Selling
(Last 12 Months)
8
Amount Of
Insider Selling
(Last 12 Months)
$141.75M
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INSM Insider Buying and Selling by Quarter

Insmed Insider and Congressional Trades History

Transaction DateInsiderBuy/SellNumber of SharesAverage Share PriceTotal TransactionDetails
8/10/2026Sell239,850$133.27$31,964,809.50  
7/9/2026Sell10,699$117.40$1,256,062.60  
6/25/2026Sell21,398$103.32$2,210,841.36  
6/22/2026Sell1,806$95.82$173,050.92  
6/10/2026
Josh Gottheimer
Josh Gottheimer
House (D-NJ)
Sell$91.88$1,001 - $15,000
6/3/2026Sell2,159$102.27$220,800.93  
6/3/2026Sell2,370$102.27$242,379.90  
6/3/2026Sell2,404$102.27$245,857.08  
6/3/2026Sell7,605$102.27$777,763.35  
5/22/2026Sell6,149$108.47$666,982.03  
4/16/2026Sell10,699$143.97$1,540,335.03  
4/6/2026Sell10,699$163.22$1,746,290.78  
4/1/2026Sell88,060$164.63$14,497,317.80  
3/30/2026Sell19,638$150.98$2,964,945.24  
3/19/2026Sell10,699$143.52$1,535,520.48  
3/5/2026Sell10,699$146.03$1,562,374.97  
2/19/2026Sell10,699$150.97$1,615,228.03  
2/9/2026Sell13,396$147.79$1,979,794.84  
2/3/2026Sell640$156.27$100,012.80  
2/3/2026Sell791$156.17$123,530.47  
2/3/2026Sell748$156.34$116,942.32  
2/3/2026Sell3,009$156.34$470,427.06  
1/20/2026Sell10,699$158.93$1,700,392.07  
1/12/2026Sell19,215$169.00$3,247,335.00  
1/8/2026Sell1,053$174.17$183,401.01  
1/8/2026Sell2,059$174.17$358,616.03  
1/8/2026Sell1,447$174.17$252,023.99  
1/8/2026Sell3,223$174.17$561,349.91  
1/7/2026Sell709$175.07$124,124.63  
1/7/2026Sell802$175.07$140,406.14  
1/7/2026Sell1,678$175.07$293,767.46  
1/7/2026Sell2,357$175.07$412,639.99  
1/6/2026Sell1,396$173.33$241,968.68  
1/6/2026Sell1,429$173.33$247,688.57  
1/6/2026Sell1,517$173.33$262,941.61  
1/6/2026Sell4,096$173.33$709,959.68  
1/2/2026Sell87,290$175.20$15,293,208.00  
12/18/2025Sell10,699$166.97$1,786,412.03  
11/24/2025Sell5,000$204.58$1,022,900.00  
11/17/2025
Leo Lee
Leo Lee
Director
Sell75,000$195.90$14,692,500.00  
11/14/2025Sell10,000$195.87$1,958,700.00  
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11/12/2025Sell30,000$194.00$5,820,000.00  
11/3/2025Sell27,130$183.78$4,985,951.40  
10/3/2025Sell$157.16$1,001 - $15,000
9/22/2025Sell$145.03$1,001 - $15,000
9/12/2025Sell10,000$145.39$1,453,900.00  
9/12/2025Sell76,520$145.45$11,129,834.00  
9/2/2025Sell24,272$143.89$3,492,498.08  
8/20/2025Sell10,000$129.50$1,295,000.00  
8/19/2025Sell25,000$127.58$3,189,500.00  
8/18/2025Sell6,865$128.40$881,466.00  
(Data available from 1/1/2013 forward)

INSM Insider Trading Activity - Frequently Asked Questions

2.10% of Insmed stock is owned by insiders. Learn more on INSM's insider holdings.

The following insider purchased INSM shares in the last 24 months: Clarissa Desjardins ($201,694.15).

Insiders have purchased a total of 3,025 INSM shares in the last 24 months for a total of $201,694.15 bought.

The following insiders have sold INSM shares in the last 24 months: David W J Mcgirr ($451,535.00), Elizabeth M Anderson ($2,981,600.00), Leo Lee ($14,692,500.00), Martina M.D. Flammer ($8,939,126.84), Melvin Md Sharoky ($2,748,900.00), Michael Alexander Smith ($15,961,012.74), Orlov S Nicole Schaeffer ($52,022,981.89), Roger Adsett ($59,172,067.53), Sara Bonstein ($29,681,980.40), and William Lewis ($60,766,788.47).

Insiders have sold a total of 2,185,689 Insmed shares in the last 24 months for a total of $247,418,492.87 sold.

Josh Gottheimer (D-NJ) and Gilbert Ray Cisneros, Jr. (D-CA) have sold shares of Insmed in the last year totaling $24,000.



This page (NASDAQ:INSM) was last updated on 8/18/2026 by MarketBeat.com Staff.
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