InsiderTrades.com logo

GOSS Insider Trading

Insider Ownership Percentage: 6.70%
Insider Buying (Last 12 Months): $249,240.00
Insider Selling (Last 12 Months): $1,259.28

Gossamer Bio Insider Trading History Chart

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

Skip ChartChart Data in Insider Trading History Table

Gossamer Bio Share Price & Price History

Current Price: $1.28
Price Change: ▲ Price Increase of +0.04 (3.23%)
As of 06/16/2025 05:00 PM ET

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

Skip Chart and Table DataPrice Data in Insider Trading History Table
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  
10/24/2022Caryn PetersonEVPSell4,757$12.07$57,416.9961,415View SEC Filing Icon  
10/24/2022Laura CarterInsiderSell4,876$12.07$58,853.3282,292View SEC Filing Icon  
7/15/2022Bryan GiraudoCFOBuy13,869$7.21$99,995.4920,990View SEC Filing Icon  
7/15/2022Faheem HasnainCEOBuy138,696$7.21$999,998.163,617,325View SEC Filing Icon  
7/15/2022Laura CarterInsiderBuy6,934$7.21$49,994.1487,168View SEC Filing Icon  
7/1/2022Laura CarterInsiderSell8,808$8.25$72,666.0080,234View SEC Filing Icon  
6/22/2022Richard ArandaInsiderSell1,778$6.88$12,232.64209,897View SEC Filing Icon  
See Full Table

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
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
5/9/2025Charles Schwab Investment Management Inc.1,138,947$1.25M0.0%-8.3%0.501%Search for SEC Filing on Google Icon
5/8/2025Monaco Asset Management SAM4,849,134$5.33M1.1%-9.7%2.134%Search for SEC Filing on Google Icon
5/8/2025GSA Capital Partners LLP695,553$0.77M0.1%-19.3%0.306%Search for SEC Filing on Google Icon
5/7/2025Mackenzie Financial Corp352,473$0.39M0.0%+17.6%0.155%Search for SEC Filing on Google Icon
2/27/2025Jefferies Financial Group Inc.100,000$90K0.0%N/A0.044%Search for SEC Filing on Google Icon
2/20/2025Mackenzie Financial Corp299,815$0.27M0.0%+499.0%0.132%Search for SEC Filing on Google Icon
2/17/2025Woodline Partners LP728,459$0.66M0.0%-7.5%0.321%Search for SEC Filing on Google Icon
2/17/2025Velan Capital Investment Management LP75,000$68K0.1%N/A0.033%Search for SEC Filing on Google Icon
2/17/2025Squarepoint Ops LLC71,944$65K0.0%-51.0%0.032%Search for SEC Filing on Google Icon
2/17/2025Two Sigma Investments LP891,279$0.81M0.0%+41.3%0.393%Search for SEC Filing on Google Icon
2/17/2025Two Sigma Advisers LP1,157,500$1.05M0.0%+44.7%0.511%Search for SEC Filing on Google Icon
2/17/2025Octagon Capital Advisors LP18,350,000$16.60M2.7%+99.7%8.098%Search for SEC Filing on Google Icon
2/17/2025Millennium Management LLC3,586,067$3.24M0.0%+14.6%1.583%Search for SEC Filing on Google Icon
2/17/2025Lazard Asset Management LLC107,470$97K0.0%+7,992.6%0.047%Search for SEC Filing on Google Icon
2/17/2025Jacobs Levy Equity Management Inc.1,534,668$1.39M0.0%-18.7%0.677%Search for SEC Filing on Google Icon
2/17/2025Jefferies Financial Group Inc.100,000$90K0.0%N/A0.044%Search for SEC Filing on Google Icon
2/17/2025Graham Capital Management L.P.34,947$32K0.0%N/A0.015%Search for SEC Filing on Google Icon
2/17/2025Fullcircle Wealth LLC47,954$43K0.0%N/A0.021%Search for SEC Filing on Google Icon
2/17/2025DAFNA Capital Management LLC1,409,262$1.28M0.3%-0.7%0.622%Search for SEC Filing on Google Icon
2/17/2025Bridgeway Capital Management LLC541,000$0.49M0.0%-2.0%0.239%Search for SEC Filing on Google Icon
2/17/2025Bank of America Corp DE84,788$77K0.0%+107.2%0.037%Search for SEC Filing on Google Icon
2/17/2025Alyeska Investment Group L.P.8,808,514$7.97M0.0%+52.7%3.887%Search for SEC Filing on Google Icon
2/17/2025Allostery Investments LP613,028$0.56M0.6%N/A0.271%Search for SEC Filing on Google Icon
2/14/2025Schonfeld Strategic Advisors LLC154,700$0.14M0.0%-34.6%0.068%Search for SEC Filing on Google Icon
2/14/2025Opti Capital Management LP182,319$0.17M0.0%N/A0.080%Search for SEC Filing on Google Icon
2/14/2025Price T Rowe Associates Inc. MD64,777$59K0.0%-99.0%0.029%Search for SEC Filing on Google Icon
2/14/2025Silverarc Capital Management LLC6,171,847$5.58M1.2%+9.3%2.724%Search for SEC Filing on Google Icon
2/13/2025Marshall Wace LLP2,534,378$2.28M0.0%-27.3%1.118%Search for SEC Filing on Google Icon
2/13/2025Renaissance Technologies LLC1,712,503$1.55M0.0%-1.9%0.756%Search for SEC Filing on Google Icon
2/13/2025Smith Moore & CO.300,000$0.27M0.0%+32.7%0.132%Search for SEC Filing on Google Icon
2/12/2025Geode Capital Management LLC2,250,461$2.04M0.0%+1.7%0.993%Search for SEC Filing on Google Icon
2/12/2025Diametric Capital LP223,770$0.20M0.1%-22.1%0.099%Search for SEC Filing on Google Icon
2/11/2025Platinum Investment Management Ltd.3,180,295$2.88M0.2%-9.8%1.403%Search for SEC Filing on Google Icon
2/10/2025Monaco Asset Management SAM5,371,641$4.86M0.7%+39.5%2.371%Search for SEC Filing on Google Icon
2/6/2025Victory Capital Management Inc.265,407$0.24M0.0%-3.3%0.117%Search for SEC Filing on Google Icon
2/6/2025Charles Schwab Investment Management Inc.1,241,979$1.12M0.0%+1.1%0.548%Search for SEC Filing on Google Icon
1/27/2025Financial Advocates Investment Management78,616$71K0.0%-16.0%0.035%Search for SEC Filing on Google Icon
1/13/2025Sivia Capital Partners LLC28,018$25K0.0%-28.2%0.012%Search for SEC Filing on Google Icon
12/13/2024Exome Asset Management LLC468,499$0.46M0.3%-58.5%0.207%Search for SEC Filing on Google Icon
11/16/2024Geode Capital Management LLC2,212,377$2.18M0.0%-3.1%0.976%Search for SEC Filing on Google Icon
11/15/2024Jacobs Levy Equity Management Inc.1,887,512$1.86M0.0%+30.7%0.833%Search for SEC Filing on Google Icon
11/13/2024The Manufacturers Life Insurance Company385,133$0.38M0.0%+24.2%0.170%Search for SEC Filing on Google Icon
11/12/2024Charles Schwab Investment Management Inc.1,228,077$1.21M0.0%-2.7%0.543%Search for SEC Filing on Google Icon
11/5/2024GSA Capital Partners LLP67,546$67K0.0%N/A0.030%Search for SEC Filing on Google Icon
10/28/2024US Bancorp DE39,655$39K0.0%N/A0.018%Search for SEC Filing on Google Icon
10/25/2024Financial Advocates Investment Management93,550$92K0.0%-12.4%0.041%Search for SEC Filing on Google Icon
10/22/2024Sequoia Financial Advisors LLC118,500$0.12M0.0%+26.7%0.052%Search for SEC Filing on Google Icon
8/16/2024Algert Global LLC83,543$75K0.0%N/A0.037%Search for SEC Filing on Google Icon
8/15/2024The Manufacturers Life Insurance Company310,213$0.28M0.0%+67.4%0.137%Search for SEC Filing on Google Icon
8/15/2024Millennium Management LLC5,597,378$5.04M0.0%-13.8%2.474%Search for SEC Filing on Google Icon
8/14/2024NEA Management Company LLC18,093,034$16.30M1.2%+14.2%7.998%Search for SEC Filing on Google Icon
8/14/2024Marshall Wace LLP3,335,511$3M0.0%+170.8%1.474%Search for SEC Filing on Google Icon
8/9/2024Renaissance Technologies LLC2,046,600$1.84M0.0%+204.7%0.905%Search for SEC Filing on Google Icon
8/8/2024Federated Hermes Inc.3,065,136$2.76M0.0%-2.2%1.355%Search for SEC Filing on Google Icon
8/7/2024Monaco Asset Management SAM2,726,104$2.46M0.4%+390.3%1.205%Search for SEC Filing on Google Icon
8/7/2024Choreo LLC48,111$46K0.0%N/A0.021%Search for SEC Filing on Google Icon
8/6/2024Acadian Asset Management LLC3,592,765$3.24M0.0%+31.3%1.588%Search for SEC Filing on Google Icon
8/3/2024TD Asset Management Inc641,498$0.58M0.0%+51.9%0.284%Search for SEC Filing on Google Icon
7/29/2024Financial Advocates Investment Management106,850$96K0.0%+57.5%0.047%Search for SEC Filing on Google Icon
7/16/2024Sequoia Financial Advisors LLC93,500$84K0.0%+27.2%0.041%Search for SEC Filing on Google Icon
5/16/2024Jacobs Levy Equity Management Inc.1,634,084$1.93M0.0%-22.3%0.722%Search for SEC Filing on Google Icon
5/15/2024Price T Rowe Associates Inc. MD2,891,005$3.41M0.0%-21.8%1.278%Search for SEC Filing on Google Icon
5/14/2024Platinum Investment Management Ltd.4,694,065$5.54M0.2%-32.5%2.075%Search for SEC Filing on Google Icon
5/10/2024Acadian Asset Management LLC2,736,385$3.23M0.0%+51.6%1.210%Search for SEC Filing on Google Icon
5/10/2024Vanguard Group Inc.11,763,784$13.88M0.0%+1.1%5.200%Search for SEC Filing on Google Icon
5/9/2024Monaco Asset Management SAM556,000$0.66M0.2%+98.6%0.246%Search for SEC Filing on Google Icon
5/7/2024SG Americas Securities LLC28,520$34K0.0%N/A0.013%Search for SEC Filing on Google Icon
4/19/2024Sivia Capital Partners LLC24,568$29K0.0%N/A0.011%Search for SEC Filing on Google Icon
2/16/2024Madison Avenue Partners LP5,054,472$4.61M0.7%-17.5%2.242%Search for SEC Filing on Google Icon
2/15/2024Octagon Capital Advisors LP9,187,883$8.38M1.3%+12.2%4.076%Search for SEC Filing on Google Icon
2/15/2024Birchview Capital LP138,176$0.13M0.1%-33.9%0.061%Search for SEC Filing on Google Icon
2/14/2024ADAR1 Capital Management LLC713,028$0.65M0.2%N/A0.316%Search for SEC Filing on Google Icon
2/14/2024Platinum Investment Management Ltd.6,954,110$6.35M0.3%+29.8%3.085%Search for SEC Filing on Google Icon
2/13/2024Armistice Capital LLC4,156,000$3.79M0.1%-16.1%1.844%Search for SEC Filing on Google Icon
2/12/2024Monashee Investment Management LLC3,459,854$3.16M0.6%-34.8%1.535%Search for SEC Filing on Google Icon
2/9/2024Corient Private Wealth LLC2,937,931$2.68M0.0%+48.9%1.303%Search for SEC Filing on Google Icon
2/8/2024Financial Advocates Investment Management98,350$90K0.0%+35.0%0.044%Search for SEC Filing on Google Icon
2/7/2024Monaco Asset Management SAM280,000$0.26M0.1%N/A0.124%Search for SEC Filing on Google Icon
2/5/2024Victory Capital Management Inc.312,357$0.29M0.0%+1,402.4%0.139%Search for SEC Filing on Google Icon
1/31/2024Federated Hermes Inc.3,206,460$2.93M0.0%-19.7%1.423%Search for SEC Filing on Google Icon
12/6/2023Citigroup Inc.196,732$0.16M0.0%+9,916.9%0.087%Search for SEC Filing on Google Icon
11/15/2023Kynam Capital Management LP250,000$0.21M0.0%N/A0.111%Search for SEC Filing on Google Icon
11/15/2023Armistice Capital LLC4,956,000$4.13M0.1%N/A2.199%Search for SEC Filing on Google Icon
11/14/2023Palo Alto Investors LP6,530,288$5.44M0.5%+88.5%2.897%Search for SEC Filing on Google Icon
11/14/2023AWM Investment Company Inc.613,028$0.51M0.1%N/A0.272%Search for SEC Filing on Google Icon
11/14/2023ARCH Venture Management LLC8,055,916$6.71M4.4%N/A3.574%Search for SEC Filing on Google Icon
Data available starting January 2016

See Full Table
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: $1.28
Low: $1.23
High: $1.36

50 Day Range

MA: $1.07
Low: $0.78
High: $1.33

52 Week Range

Now: $1.28
Low: $0.52
High: $1.55

Volume

1,602,113 shs

Average Volume

1,554,764 shs

Market Capitalization

$290.95 million

P/E Ratio

N/A

Dividend Yield

N/A

Beta

1.85

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

Gossamer Bio's top insider investors include:
  1. Faheem Hasnain (CEO)
  2. Bryan Giraudo (CFO)
  3. Richard Aranda (Insider)
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. Acadian Asset Management LLC — 2.80%
  2. Siren L.L.C. — 2.29%
  3. Siren L.L.C. — 2.29%
  4. Monaco Asset Management SAM — 2.13%
  5. Alyeska Investment Group L.P. — 1.83%
  6. Charles Schwab Investment Management Inc. — 0.50%
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. ADAR1 Capital Management LLC
  2. Alyeska Investment Group L.P.
  3. Jacobs Levy Equity Management Inc.
  4. Monaco Asset Management SAM
  5. DAFNA Capital Management LLC
  6. Siren L.L.C.
  7. Siren L.L.C.
  8. GSA Capital Partners LLP

Which major investors are buying Gossamer Bio stock?

In the previous quarter, GOSS stock was bought by institutional investors including:
  1. Acadian Asset Management LLC
  2. Goldman Sachs Group Inc.
  3. Focus Partners Wealth
  4. Jane Street Group LLC
  5. OMERS ADMINISTRATION Corp
  6. Cubist Systematic Strategies LLC
  7. Mackenzie Financial Corp
  8. Invesco Ltd.
Within the last year, these company insiders have bought Gossamer Bio stock:
  1. Faheem Hasnain (CEO)
  2. Bryan Giraudo (CFO)
Learn More investors buying Gossamer Bio stock.