GT Biopharma (GTBP) SEC Filings & 10K Form $1.06 -0.08 (-7.02%) As of 01:00 PM Eastern This is a fair market value price provided by Polygon.io. Learn more. Add Compare Share Share SEC Filings Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFDA EventsHeadlinesInsider TradesOwnershipSEC FilingsShort InterestTrendsBuy This Stock Recent GT Biopharma 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 TypeView07/24/20253:34 PMGT Biopharma (Filer)Form 8-KCurrent report pursuant to Section 13 or 15(d) 07/03/20257:30 AMGT Biopharma (Filer)Form 424B307/02/202511:15 PMGT Biopharma (Filer)Form EFFECT06/27/20254:30 PMGT Biopharma (Filer)Form S-1/A06/11/20254:30 PMGT Biopharma (Filer)Form S-1Registration statement under Securities Act of 1933 06/11/20253:30 PMGT Biopharma (Filer)Form DEF 14A06/11/20253:31 PMGT Biopharma (Filer)Form DEFA14A06/02/20256:46 PMBRISTOL INVESTMENT FUND LTD (Filed by)GT Biopharma (Subject)Form SCHEDULE 13G/A05/29/20253:15 PMGT Biopharma (Issuer)Ritter Andrew J (Reporting)Form 3Initial statement of beneficial ownership of securities 05/27/20253:15 PMGT Biopharma (Filer)Form DNotice of Exempt Offering of Securities 05/27/20253:15 PMGT Biopharma (Filer)Form 8-KCurrent report pursuant to Section 13 or 15(d) Get the Latest News and Ratings for GTBP and Related StocksEnter your email address below to receive the latest news and analysts' ratings for GT Biopharma and its competitors with MarketBeat's FREE daily newsletter. 05/14/20258:22 AMFive Narrow Lane LP (Filed by)GT Biopharma (Subject)Form SCHEDULE 13G05/13/20258:01 AMGT Biopharma (Filer)Form 8-KCurrent report pursuant to Section 13 or 15(d) 04/14/20253:05 PMGT Biopharma (Filer)Form 10-K/A03/14/20258:00 AMGT Biopharma (Filer)Form 424B303/13/202511:15 PMGT Biopharma (Filer)Form EFFECT03/07/20254:29 PMGT Biopharma (Filer)Form DNotice of Exempt Offering of Securities 03/06/20254:20 PMGT Biopharma (Filer)Form S-3Registration statement under Securities Act of 1933 02/26/20254:07 PMGT Biopharma (Filer)Form 8-KCurrent report pursuant to Section 13 or 15(d) 02/24/20257:00 AMGT Biopharma (Filer)Form RW02/21/20254:01 PMGT Biopharma (Filer)Form 10-KAnnual report pursuant to Section 13 or 15(d) 02/07/20258:32 AMGT Biopharma (Filer)Form S-1/A01/27/20257:31 AMGT Biopharma (Filer)Form S-1/A01/27/20256:00 AMGT Biopharma (Filer)Form 8-KCurrent report pursuant to Section 13 or 15(d) 12/23/20244:23 PMGT Biopharma (Filer)Form S-1Registration statement under Securities Act of 1933 11/27/20243:05 PMGT Biopharma (Filer)Form 8-KCurrent report pursuant to Section 13 or 15(d) 11/21/20248:25 AMGT Biopharma (Filer)Form 8-KCurrent report pursuant to Section 13 or 15(d) 10/21/20248:13 PMGT Biopharma (Issuer)URBAN ALAN LOUIS (Reporting)Form 4Statement of changes in beneficial ownership of securities 10/17/202410:15 AMCYTOVANCE BIOLOGICS INC (Filed by)GT Biopharma (Subject)Form SCHEDULE 13G/A(Data available from 1/1/2016 forward) Related Companies and Tools Related Companies MTVA 10K Form ATHA 10K Form CLRB 10K Form LIXT 10K Form IBIO 10K Form LEXX 10K Form ADAP 10K Form SNGX 10K Form APM 10K Form ALLR 10K Form SEC Filings Tools Latest SEC FilingsInsider Trading Activity This page (NASDAQ:GTBP) was last updated on 8/28/2025 by MarketBeat.com Staff From Our PartnersBuffett, Gates and Bezos Quietly Dumping Stocks—Here's WhyImagine a bull market so powerful, every single investor became a millionaire. 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