Koss Corporation

KOSS·NASDAQ·$4.19Share Price as of 11/2·$40MMarket Cap as of 11/2

Financials

10-QQ1 ended 09/30/2610/30/26 10-KFY 202608/28/26 10-QQ3 ended 03/31/2605/08/26 10-QQ2 ended 12/31/2501/30/26 10-QQ1 ended 09/30/2510/31/25

Disclosures

8-KCurrent report10/29/26 8-KCurrent report10/16/26 8-KCurrent report08/27/26 8-KCurrent report05/07/26 8-KCurrent report01/29/26

Prospectuses and Registrations

S-8Registration of securities for employees12/12/23 S-8Registration of securities for employees11/05/12 424B3Prospectus12/10/04 S-3/AShelf registration (amended)11/22/04 S-3/AShelf registration (amended)11/17/04

Proxies

DEF 14ADefinitive proxy08/28/26 DEFA14AAdditional proxy materials08/28/26 DEF 14ADefinitive proxy08/29/25 DEFA14AAdditional proxy materials08/29/25 DEF 14ADefinitive proxy08/30/24

Ownership

Form 4Insider transaction05/08/26 Form 4Insider transaction05/08/26 Form 4Insider transaction02/17/26 Form 4Insider transaction12/04/25 Form 4Insider transaction06/17/25

Other

ARSAnnual report to shareholders08/28/26 SDConflict Minerals disclosure05/08/26 ARSAnnual report to shareholders08/29/25 SDConflict Minerals disclosure05/06/25 ARSAnnual report to shareholders08/30/24