Koss (KOSS) SEC Filings & 10K Form $5.54 -0.25 (-4.32%) Closing price 06/11/2025 04:00 PM EasternExtended Trading$5.54 0.00 (0.00%) As of 06:08 AM 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 AnalysisChartCompetitorsEarningsHeadlinesInsider TradesOwnershipSEC FilingsShort InterestTrendsBuy This Stock Recent Koss 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 TypeView05/08/20254:17 PMKoss (Filer)Form 8-KCurrent report pursuant to Section 13 or 15(d) 05/06/20252:35 PMKoss (Filer)Form SDSpecialized Disclosure Report 01/30/20254:20 PMKoss (Filer)Form 8-KCurrent report pursuant to Section 13 or 15(d) 12/16/20243:13 PMKoss (Issuer)KOSS JOHN C JR (Reporting)Form 4Statement of changes in beneficial ownership of securities 10/31/20244:20 PMKoss (Filer)Form 8-KCurrent report pursuant to Section 13 or 15(d) 10/21/202412:41 PMKoss (Filer)Form 8-KCurrent report pursuant to Section 13 or 15(d) 08/29/20244:28 PMKoss (Filer)Form 8-KCurrent report pursuant to Section 13 or 15(d) (Data available from 1/1/2016 forward) Related Companies and Tools Related Companies ESCA 10Q Form AOUT 10Q Form CLAR 10Q Form GNSS 10Q Form SRM 10Q Form YYAI 10Q Form KBSX 10Q Form MICS 10Q Form BHAT 10Q Form FTEL 10Q Form SEC Filings Tools Latest SEC FilingsInsider Trading Activity This page (NASDAQ:KOSS) was last updated on 6/12/2025 by MarketBeat.com Staff From Our PartnersTrump’s Exec Order #14154 could be a “Millionaire-Maker”Former Presidential Advisor, Jim Rickards, says Trump could “rewire our economy and hand millions of Americans...Paradigm Press | SponsoredTrump wipes out trillions overnight…Is there anybody more powerful than Donald Trump right now? 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