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GOSS Insider Trading

Insider Ownership Percentage: 6.70%
Insider Buying (Last 12 Months): $0.00
Insider Selling (Last 12 Months): $0.00

Gossamer Bio Insider Trading History Chart

This chart shows the insider buying and selling history at Gossamer Bio by year and by quarter.

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Gossamer Bio Share Price & Price History

Current Price: $3.32
Price Change: ▼ Price Decrease of -0.1 (-2.92%)
As of 12/4/2025 05:00 PM ET

This chart shows the closing price history over time for GOSS up to the past year.

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Days: 30 | 90 | 365

Gossamer Bio Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
6/24/2024Richard ArandaInsiderSell1,908$0.66$1,259.28196,891View SEC Filing Icon  
6/21/2024Faheem HasnainCEOBuy372,000$0.67$249,240.005,408,073View SEC Filing Icon  
3/27/2024Bryan GiraudoCFOSell6,430$1.16$7,458.8092,737View SEC Filing Icon  
3/27/2024Faheem HasnainCEOSell23,172$1.16$26,879.52120,293View SEC Filing Icon  
3/18/2024Richard ArandaInsiderSell4,018$1.33$5,343.94198,799View SEC Filing Icon  
11/13/2023Bryan GiraudoCFOBuy200,000$0.56$112,000.00380,010View SEC Filing Icon  
6/22/2023Richard ArandaInsiderSell1,814$1.29$2,340.06197,574View SEC Filing Icon  
4/4/2023Bryan GiraudoCFOBuy55,000$1.02$56,100.00125,990View SEC Filing Icon  
3/22/2023Faheem HasnainCEOBuy440,500$1.14$502,170.004,495,897View SEC Filing Icon  
3/20/2023Bryan GiraudoCFOBuy50,000$0.97$48,500.0070,990View SEC Filing Icon  
3/20/2023Faheem HasnainCEOBuy168,683$1.03$173,743.493,786,008View SEC Filing Icon  
3/20/2023Waage ChristianEVPBuy18,500$1.20$22,200.0032,388View SEC Filing Icon  
3/16/2023Caryn PetersonEVPSell7,564$1.10$8,320.4053,851View SEC Filing Icon  
3/16/2023Laura CarterInsiderSell6,029$1.10$6,631.9076,263View SEC Filing Icon  
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SEC Filings (Institutional Ownership Changes) for Gossamer Bio (NASDAQ:GOSS)

81.23% of Gossamer Bio stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

This chart shows the instiutional buying and selling at GOSS by year and by quarter.

Skip Institutional Buying and Selling Chart and Table DataRead Chart Data in Institutional Trading History Table

Gossamer Bio Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
11/21/2025CIBC Bancorp USA Inc.20,246$53K0.0%N/A0.009%Search for SEC Filing on Google Icon
11/19/2025Caitong International Asset Management Co. Ltd21,637$57K0.0%N/A0.009%Search for SEC Filing on Google Icon
11/17/2025Jacobs Levy Equity Management Inc.1,408,118$3.70M0.0%+29.0%0.608%Search for SEC Filing on Google Icon
11/17/2025XTX Topco Ltd274,782$0.72M0.0%+177.6%0.119%Search for SEC Filing on Google Icon
11/17/2025Alyeska Investment Group L.P.1,909,087$5.02M0.0%-57.2%0.825%Search for SEC Filing on Google Icon
11/17/2025Voleon Capital Management LP19,500$51K0.0%N/A0.008%Search for SEC Filing on Google Icon
11/17/2025Velan Capital Investment Management LP70,000$0.18M0.2%-6.7%0.030%Search for SEC Filing on Google Icon
11/17/2025Qube Research & Technologies Ltd208,789$0.55M0.0%-16.4%0.090%Search for SEC Filing on Google Icon
11/17/2025Prelude Capital Management LLC136,200$0.36M0.0%-63.6%0.059%Search for SEC Filing on Google Icon
11/17/2025Palo Alto Investors LP5,464,349$14.37M2.7%-4.8%2.361%Search for SEC Filing on Google Icon
11/17/2025Mercer Global Advisors Inc. ADV15,744$41K0.0%N/A0.007%Search for SEC Filing on Google Icon
11/17/2025Millennium Management LLC3,619,329$9.52M0.0%+629.3%1.564%Search for SEC Filing on Google Icon
11/17/2025MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.87,274$0.23M0.0%-16.0%0.038%Search for SEC Filing on Google Icon
11/17/2025Jain Global LLC1,054,356$2.77M0.0%N/A0.456%Search for SEC Filing on Google Icon
11/17/2025Focus Partners Wealth1,325,198$3.49M0.0%+15.2%0.573%Search for SEC Filing on Google Icon
11/17/2025Brevan Howard Capital Management LP14,093$37K0.0%N/A0.006%Search for SEC Filing on Google Icon
11/17/2025Bank of America Corp DE2,881,904$7.58M0.0%+4,196.2%1.245%Search for SEC Filing on Google Icon
11/17/2025Bank of Nova Scotia35,000$92K0.0%N/A0.015%Search for SEC Filing on Google Icon
11/17/2025Alliancebernstein L.P.98,680$0.26M0.0%+273.5%0.043%Search for SEC Filing on Google Icon
11/14/2025Lazard Asset Management LLC41,700$0.11M0.0%-38.1%0.018%Search for SEC Filing on Google Icon
11/14/2025Two Sigma Investments LP2,287,251$6.02M0.0%+31.1%0.988%Search for SEC Filing on Google Icon
11/14/2025Bridgeway Capital Management LLC335,900$0.88M0.0%-30.9%0.145%Search for SEC Filing on Google Icon
11/14/2025Silverback Asset Management LLC500,000$1.32M0.1%+42.9%0.216%Search for SEC Filing on Google Icon
11/13/2025Platinum Investment Management Ltd.764,165$2.01M0.1%-44.8%0.330%Search for SEC Filing on Google Icon
11/13/2025Arrowstreet Capital Limited Partnership635,397$1.67M0.0%-43.2%0.275%Search for SEC Filing on Google Icon
11/13/2025Sei Investments Co.61,186$0.16M0.0%N/A0.026%Search for SEC Filing on Google Icon
11/13/2025UBS Group AG2,770,046$7.29M0.0%+785.7%1.197%Search for SEC Filing on Google Icon
11/13/2025BNP Paribas Financial Markets96,403$0.25M0.0%+463.2%0.042%Search for SEC Filing on Google Icon
11/13/2025Mackenzie Financial Corp309,050$0.81M0.0%-44.1%0.134%Search for SEC Filing on Google Icon
11/13/2025Russell Investments Group Ltd.685,049$1.80M0.0%N/A0.296%Search for SEC Filing on Google Icon
11/12/2025Smith Moore & CO.280,000$0.74M0.1%-6.7%0.121%Search for SEC Filing on Google Icon
11/12/2025Evernest Financial Advisors LLC20,000$53K0.0%N/A0.009%Search for SEC Filing on Google Icon
11/12/2025Choreo LLC85,111$0.22M0.0%+11.8%0.037%Search for SEC Filing on Google Icon
11/10/2025AXQ Capital LP46,367$0.12M0.0%N/A0.020%Search for SEC Filing on Google Icon
11/10/2025Monaco Asset Management SAM1,379,416$3.63M0.2%-61.1%0.596%Search for SEC Filing on Google Icon
11/7/2025GSA Capital Partners LLP190,815$0.50M0.0%-74.9%0.084%Search for SEC Filing on Google Icon
11/7/2025Vanguard Group Inc.12,009,773$31.59M0.0%+5.2%5.282%Search for SEC Filing on Google Icon
11/7/2025JPMorgan Chase & Co.194,369$0.51M0.0%+114.9%0.085%Search for SEC Filing on Google Icon
11/6/2025Rhumbline Advisers225,060$0.59M0.0%-2.6%0.099%Search for SEC Filing on Google Icon
11/6/2025ProShare Advisors LLC32,475$85K0.0%-16.6%0.014%Search for SEC Filing on Google Icon
11/6/2025MB Generational Wealth LLC1,414,824$3.72M2.4%N/A0.622%Search for SEC Filing on Google Icon
11/5/2025Fullcircle Wealth LLC22,100$58K0.0%N/A0.010%Search for SEC Filing on Google Icon
11/5/2025Alps Advisors Inc.99,155$0.26M0.0%-19.2%0.044%Search for SEC Filing on Google Icon
11/4/2025Jones Financial Companies Lllp17,360$47K0.0%+136.7%0.008%Search for SEC Filing on Google Icon
11/3/2025New York State Common Retirement Fund43,600$0.12M0.0%-43.4%0.019%Search for SEC Filing on Google Icon
10/31/2025Drive Wealth Management LLC18,200$48K0.0%-28.6%0.008%Search for SEC Filing on Google Icon
10/29/2025Wealth Enhancement Advisory Services LLC19,197$48K0.0%N/A0.008%Search for SEC Filing on Google Icon
10/28/2025Gerber LLC28,249$74K0.0%N/A0.012%Search for SEC Filing on Google Icon
10/23/2025SG Americas Securities LLC21,195$56K0.0%N/A0.009%Search for SEC Filing on Google Icon
10/23/2025HB Wealth Management LLC94,748$0.25M0.0%N/A0.042%Search for SEC Filing on Google Icon
10/22/2025Ciovacco Capital Management LLC10,204$27K0.0%N/A0.004%Search for SEC Filing on Google Icon
10/20/2025Merit Financial Group LLC134,688$0.35M0.0%N/A0.059%Search for SEC Filing on Google Icon
10/15/2025CWM LLC25,017$66K0.0%N/A0.011%Search for SEC Filing on Google Icon
10/14/2025Brighton Jones LLC13,754$36K0.0%N/A0.006%Search for SEC Filing on Google Icon
10/9/2025Voya Investment Management LLC36,510$96K0.0%-32.9%0.016%Search for SEC Filing on Google Icon
9/26/2025Corient Private Wealth LLC3,693,683$4.54M0.0%+8.9%1.624%Search for SEC Filing on Google Icon
8/19/2025State of Wyoming105,175$0.13M0.0%N/A0.046%Search for SEC Filing on Google Icon
8/15/2025Exome Asset Management LLC1,097,999$1.35M0.7%-8.3%0.483%Search for SEC Filing on Google Icon
8/15/2025Corient Private Wealth LLC3,693,683$4.54M0.0%+8.9%1.624%Search for SEC Filing on Google Icon
8/15/2025Lazard Asset Management LLC67,362$82K0.0%+53.9%0.030%Search for SEC Filing on Google Icon
8/15/2025Bridgeway Capital Management LLC485,900$0.60M0.0%-13.4%0.214%Search for SEC Filing on Google Icon
8/15/2025Bank of America Corp DE67,080$83K0.0%-59.1%0.030%Search for SEC Filing on Google Icon
8/15/2025Ameriprise Financial Inc.434,049$0.53M0.0%N/A0.191%Search for SEC Filing on Google Icon
8/14/2025Banco BTG Pactual S.A.22,009$27K0.0%N/A0.010%Search for SEC Filing on Google Icon
8/14/2025MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.103,947$0.13M0.0%N/A0.046%Search for SEC Filing on Google Icon
8/14/2025The Manufacturers Life Insurance Company 72,061$89K0.0%N/A0.032%Search for SEC Filing on Google Icon
8/14/2025Qube Research & Technologies Ltd249,784$0.31M0.0%-72.1%0.110%Search for SEC Filing on Google Icon
8/13/2025Diametric Capital LP89,382$0.11M0.1%-7.0%0.039%Search for SEC Filing on Google Icon
8/13/2025Invesco Ltd.239,245$0.29M0.0%+447.5%0.105%Search for SEC Filing on Google Icon
8/13/2025Arrowstreet Capital Limited Partnership1,117,972$1.38M0.0%+39.1%0.492%Search for SEC Filing on Google Icon
8/13/2025New York State Common Retirement Fund77,000$95K0.0%N/A0.034%Search for SEC Filing on Google Icon
8/13/2025Quadrature Capital Ltd95,796$0.12M0.0%N/A0.042%Search for SEC Filing on Google Icon
8/13/2025Choreo LLC76,111$94K0.0%+58.2%0.033%Search for SEC Filing on Google Icon
8/12/2025XTX Topco Ltd98,976$0.12M0.0%N/A0.044%Search for SEC Filing on Google Icon
8/12/2025Rhumbline Advisers231,049$0.28M0.0%N/A0.102%Search for SEC Filing on Google Icon
8/12/2025Legal & General Group Plc21,159$26K0.0%N/A0.009%Search for SEC Filing on Google Icon
8/12/2025JPMorgan Chase & Co.90,447$0.11M0.0%+479.0%0.040%Search for SEC Filing on Google Icon
8/8/2025Intech Investment Management LLC98,303$0.12M0.0%N/A0.043%Search for SEC Filing on Google Icon
8/8/2025Police & Firemen s Retirement System of New Jersey42,915$53K0.0%N/A0.019%Search for SEC Filing on Google Icon
8/8/2025Geode Capital Management LLC4,555,080$5.60M0.0%+100.4%2.004%Search for SEC Filing on Google Icon
8/7/2025ProShare Advisors LLC38,946$48K0.0%N/A0.017%Search for SEC Filing on Google Icon
8/7/2025Monaco Asset Management SAM3,550,000$4.37M0.8%-26.8%1.562%Search for SEC Filing on Google Icon
8/7/2025Acadian Asset Management LLC7,146,022$8.79M0.0%+12.4%3.144%Search for SEC Filing on Google Icon
7/30/2025Drive Wealth Management LLC25,474$31K0.0%+52.7%0.011%Search for SEC Filing on Google Icon
7/21/2025Platinum Investment Management Ltd.1,383,863$1.70M0.1%-20.1%0.609%Search for SEC Filing on Google Icon
6/27/2025Goldman Sachs Group Inc.939,603$1.03M0.0%+720.2%0.413%Search for SEC Filing on Google Icon
5/23/2025Siren L.L.C.5,208,968$5.73M0.3%-3.8%2.292%Search for SEC Filing on Google Icon
5/21/2025Acadian Asset Management LLC6,358,113$6.99M0.0%+24.6%2.798%Search for SEC Filing on Google Icon
5/20/2025Focus Partners Wealth700,000$0.77M0.0%N/A0.308%Search for SEC Filing on Google Icon
5/19/2025Jane Street Group LLC683,423$0.75M0.0%+5,250.1%0.301%Search for SEC Filing on Google Icon
5/16/2025Goldman Sachs Group Inc.939,603$1.03M0.0%+720.2%0.414%Search for SEC Filing on Google Icon
5/16/2025Jacobs Levy Equity Management Inc.282,264$0.31M0.0%-81.6%0.124%Search for SEC Filing on Google Icon
5/16/2025Alyeska Investment Group L.P.4,163,734$4.58M0.0%-52.7%1.832%Search for SEC Filing on Google Icon
5/16/2025ADAR1 Capital Management LLC227,228$0.25M0.0%-97.3%0.100%Search for SEC Filing on Google Icon
5/15/2025Cubist Systematic Strategies LLC194,031$0.21M0.0%N/A0.085%Search for SEC Filing on Google Icon
5/15/2025DAFNA Capital Management LLC907,854$1M0.3%-35.6%0.400%Search for SEC Filing on Google Icon
5/15/2025Siren L.L.C.5,208,968$5.73M0.3%-3.8%2.292%Search for SEC Filing on Google Icon
5/15/2025OMERS ADMINISTRATION Corp351,600$0.39M0.0%N/A0.155%Search for SEC Filing on Google Icon
5/12/2025Virtu Financial LLC34,971$38K0.0%N/A0.015%Search for SEC Filing on Google Icon
5/12/2025Invesco Ltd.43,697$48K0.0%N/A0.019%Search for SEC Filing on Google Icon
Data available starting January 2016

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Gossamer Bio logo
Gossamer Bio, Inc., a clinical-stage biopharmaceutical company, focuses on developing and commercializing seralutinib for the treatment of pulmonary arterial hypertension (PAH) in the United States. The company is developing GB002, an inhaled, small molecule, platelet-derived growth factor receptor, or PDGFR, colony-stimulatin factor 1 receptor and c-KIT inhibitor, which is in Phase 3 clinical trial for the treatment of PAH. It has license agreements with Pulmokine, Inc. to develop and commercialize GB002 and related backup compounds. The company was formerly known as FSG, Bio, Inc. and changed its name to Gossamer Bio, Inc. in 2017. Gossamer Bio, Inc. was incorporated in 2015 and is headquartered in San Diego, California.
Read More on Gossamer Bio

Today's Range

Now: $3.32
Low: $3.30
High: $3.43

50 Day Range

MA: $2.64
Low: $2.09
High: $3.42

52 Week Range

Now: $3.32
Low: $0.67
High: $3.60

Volume

2,191,137 shs

Average Volume

2,860,877 shs

Market Capitalization

$768.45 million

P/E Ratio

N/A

Dividend Yield

N/A

Beta

1.92

Who are the company insiders with the largest holdings of Gossamer Bio?

Gossamer Bio's top insider investors include:
  1. Faheem Hasnain (CEO)
  2. Richard Aranda (Insider)
  3. Bryan Giraudo (CFO)
Learn More about top insider investors at Gossamer Bio.

Who are the major institutional investors of Gossamer Bio?

Gossamer Bio's top institutional investors include:
  1. Vanguard Group Inc. — 5.28%
  2. Palo Alto Investors LP — 2.36%
  3. Millennium Management LLC — 1.56%
  4. Bank of America Corp DE — 1.25%
  5. UBS Group AG — 1.20%
  6. Two Sigma Investments LP — 0.99%
Learn More about top institutional investors of Gossamer Bio stock.

Which major investors are selling Gossamer Bio stock?

In the previous quarter, GOSS stock was sold by these institutional investors:
  1. Alyeska Investment Group L.P.
  2. Monaco Asset Management SAM
  3. Platinum Investment Management Ltd.
  4. GSA Capital Partners LLP
  5. Arrowstreet Capital Limited Partnership
  6. Palo Alto Investors LP
  7. Mackenzie Financial Corp
  8. Prelude Capital Management LLC

Which major investors are buying Gossamer Bio stock?

In the previous quarter, GOSS stock was bought by institutional investors including:
  1. Millennium Management LLC
  2. Bank of America Corp DE
  3. UBS Group AG
  4. MB Generational Wealth LLC
  5. Jain Global LLC
  6. Russell Investments Group Ltd.
  7. Vanguard Group Inc.
  8. Two Sigma Investments LP