Gossamer Bio (GOSS) SEC Filings & 10K Form $1.23 +0.02 (+1.24%) Closing price 07/3/2025 03:47 PM EasternExtended Trading$1.23 0.00 (0.00%) As of 07/3/2025 04:53 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share SEC Filings Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Recent Gossamer Bio SEC Filings All Filing Types 1 10 10-D 10-K 10-M 10-Q 11-K 12b-25 13F 13H 144 15 15F 17-H 18 18-K 19b-4(e) 19b-4 19b-7 1-A 1-E 1-K 1-N 1-SA 1-U 1-Z 20-F 24F-2 25 2-E 3 4 40-F 5 6-K 7-M 8-A 8-K 8-M 9-M ABS DD-15E ABS-15G ABS-EE ADV ADV-E ADV-H ADV-NR ADV-W ATS ATS-R BD BD-N BDW C CA-1 CB CFPORTAL D F-1 F-10 F-3 F-4 F-6 F-7 F-8 F-80 F-N F-X ID MA MA-I MA-NR MA-W MSD MSDW n/a N-14 N-17D-1 N-17f-1 N-17f-2 N-18f-1 N-1A N-2 N-23c-3 N-27D-1 N-3 N-4 N-5 N-54A N-54C N-6 N-6EI-1 N-6F N-8A N-8B-2 N-8B-4 N-8F N-CR N-CSR N-MFP N-PX N-Q NRSRO N-SAR PF PILOT R31 S-1 S-11 S-20 S-3 S-4 S-6 S-8 SBSE SBSE-A SBSE-BD SBSE-C SBSE-W SCI SD SDR SE SF-1 SF-3 SIP T-1 T-2 T-3 T-4 T-6 TA-1 TA-2 TA-W TCR TH WB-APP X-17A-19 X-17A-5 Part I X-17A-5 Part II X-17A-5 Part IIA X-17A-5 Part IIB X-17A-5 Part III X-17A-5 Schedule I X-17F-1A Filing Types Include Ownership Filings Exclude Ownership Filings Only Show Ownership FIlings Ownership Filings Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 2 Years 3 Years Time Frame Start Date End Date Export to Excel DateFilerForm TypeView06/26/20253:40 PMDaniel Thomas O (Reporting)Gossamer Bio (Issuer)Form 4Statement of changes in beneficial ownership of securities 06/26/20253:35 PMDrynan Skye (Reporting)Gossamer Bio (Issuer)Form 4Statement of changes in beneficial ownership of securities 06/26/20253:36 PMGossamer Bio (Issuer)Milligan Sandra (Reporting)Form 4Statement of changes in beneficial ownership of securities 06/26/20253:37 PMGossamer Bio (Issuer)Quisel John D (Reporting)Form 4Statement of changes in beneficial ownership of securities 06/26/20253:38 PMCox Russell J. (Reporting)Gossamer Bio (Issuer)Form 4Statement of changes in beneficial ownership of securities 06/26/20253:39 PMGossamer Bio (Issuer)Nathan Steven D (Reporting)Form 4Statement of changes in beneficial ownership of securities 06/25/20253:01 PMGossamer Bio (Filer)Form 8-KCurrent report pursuant to Section 13 or 15(d) 06/16/20256:31 AMGossamer Bio (Filer)Form 8-KCurrent report pursuant to Section 13 or 15(d) 03/06/20253:05 PMAranda Richard (Reporting)Gossamer Bio (Issuer)Form 4Statement of changes in beneficial ownership of securities 03/06/20253:06 PMGossamer Bio (Issuer)Smith Robert Paul JR (Reporting)Form 4Statement of changes in beneficial ownership of securities 03/06/20253:08 PMChristian Waage (Reporting)Gossamer Bio (Issuer)Form 4Statement of changes in beneficial ownership of securities 03/06/20253:09 PMGossamer Bio (Issuer)Peterson Caryn (Reporting)Form 4Statement of changes in beneficial ownership of securities 02/05/20255:28 PMGossamer Bio (Subject)Octagon Capital Advisors LP (Filed by)Form SCHEDULE 13G01/30/20258:57 PMGossamer Bio (Subject)VANGUARD GROUP INC (Filed by)Form SCHEDULE 13G/A11/12/20248:55 AMFMR LLC (Filed by)Gossamer Bio (Subject)Form SC 13G/A08/02/20245:30 PMGossamer Bio (Subject)Invus Global Management, LLC (Filed by)Form SC 13G/A(Data available from 1/1/2016 forward) Related Companies and Tools Related Companies Amphastar Pharmaceuticals 10K Form Dyne Therapeutics 10K Form Phibro Animal Health 10K Form BGM Group 10K Form AbCellera Biologics 10K Form WAVE Life Sciences 10K Form Verve Therapeutics 10K Form Enliven Therapeutics 10K Form Intellia Therapeutics 10K Form Akebia Therapeutics 10K Form SEC Filings Tools Latest SEC FilingsInsider Trading Activity This page (NASDAQ:GOSS) was last updated on 7/5/2025 by MarketBeat.com Staff From Our PartnersBanks aren’t ready for this altcoin—are you?Our expert analysts have identified a $100 billion gap in the crypto market. 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