KOSS CORP SEC EDGAR Filings (CIK 0000056701)

SEC EDGAR filings, ownership reports, and insider transactions for KOSS CORP.

Symbol
KOSS on Nasdaq
Industry
Household Audio & Video Equipment (Office Of Manufacturing)
Business address
4129 N Port Washington Ave, Milwaukee, WI, 53212
State of incorporation
DE
Fiscal year end
30 June
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KOSS CORP has filed 693 SEC EDGAR filings since 14 Feb 1994

Latest Filings

Recent SEC filings for KOSS CORP including 4, 10-Q, 8-K and more.

Form type Document Filing Description Filing date Reporting date File number(s)
4 Open 4 document View SEC filing for 4 4 04 Dec 2025 02 Dec 2025
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 31 Oct 2025 30 Sep 2025 000-03295
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 30 Oct 2025 30 Oct 2025 000-03295
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 20 Oct 2025 15 Oct 2025 000-03295
ARS Open ARS document View SEC filing for ARS FY25 KOSS ANNUAL REPORT TO SHAREHOLDERS 29 Aug 2025 30 Jun 2025 000-03295
DEFA14A Open DEFA14A document View SEC filing for DEFA14A DEFA14A 29 Aug 2025 000-03295
DEF 14A Open DEF 14A document | Open XBRL data View SEC filing for DEF 14A DEF 14A 29 Aug 2025 28 Aug 2025 000-03295
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K 10-K 29 Aug 2025 30 Jun 2025 000-03295
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 28 Aug 2025 28 Aug 2025 000-03295
4 Open 4 document View SEC filing for 4 4 17 Jun 2025 10 Jun 2025
4 Open 4 document View SEC filing for 4 4 17 Jun 2025 12 Jun 2025
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 09 May 2025 31 Mar 2025 000-03295
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 08 May 2025 08 May 2025 000-03295
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 08 May 2025 06 May 2025 000-03295
SD Open SD document View SEC filing for SD FORM SD 06 May 2025 000-03295
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 31 Jan 2025 31 Dec 2024 000-03295
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 30 Jan 2025 30 Jan 2025 000-03295
4 Open 4 document View SEC filing for 4 4 16 Dec 2024 12 Dec 2024
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 01 Nov 2024 30 Sep 2024 000-03295
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 31 Oct 2024 31 Oct 2024 000-03295
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 21 Oct 2024 16 Oct 2024 000-03295
ARS Open ARS document View SEC filing for ARS ANNUAL REPORT 30 Aug 2024 30 Jun 2024 000-03295
DEFA14A Open DEFA14A document View SEC filing for DEFA14A DEFA14A 30 Aug 2024 000-03295
DEF 14A Open DEF 14A document | Open XBRL data View SEC filing for DEF 14A DEF 14A 30 Aug 2024 29 Aug 2024 000-03295
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K 10-K 30 Aug 2024 30 Jun 2024 000-03295
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 29 Aug 2024 29 Aug 2024 000-03295
4 Open 4 document View SEC filing for 4 4 31 May 2024 30 May 2024
4 Open 4 document View SEC filing for 4 4 21 May 2024 20 May 2024
SD Open SD document View SEC filing for SD FORM SD 15 May 2024 000-03295
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 10 May 2024 31 Mar 2024 000-03295
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 09 May 2024 09 May 2024 000-03295
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 02 Feb 2024 31 Dec 2023 000-03295
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 01 Feb 2024 01 Feb 2024 000-03295
S-8 Open S-8 document View SEC filing for S-8 FORM S-8 12 Dec 2023 333-276005
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 27 Oct 2023 30 Sep 2023 000-03295
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 26 Oct 2023 26 Oct 2023 000-03295
8-K/A Open 8-K/A document | Open XBRL data View SEC filing for 8-K/A 8-K/A 26 Oct 2023 18 Oct 2023 000-03295
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 23 Oct 2023 18 Oct 2023 000-03295
ARS Open ARS document View SEC filing for ARS ANNUAL REPORT 25 Aug 2023 30 Jun 2023 000-03295
DEFA14A Open DEFA14A document View SEC filing for DEFA14A DEFA14A 25 Aug 2023 000-03295
DEF 14A Open DEF 14A document View SEC filing for DEF 14A DEF 14A 25 Aug 2023 24 Aug 2023 000-03295
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K 10-K 25 Aug 2023 30 Jun 2023 000-03295
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 24 Aug 2023 24 Aug 2023 000-03295
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 21 Aug 2023 19 Oct 2022
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 27 Jul 2023 26 Jul 2023 000-03295
SD Open SD document View SEC filing for SD FORM SD 18 May 2023 000-03295
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 12 May 2023 31 Mar 2023 000-03295
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 11 May 2023 11 May 2023 000-03295
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 27 Jan 2023 31 Dec 2022 000-03295
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 26 Jan 2023 26 Jan 2023 000-03295
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 28 Oct 2022 28 Oct 2022 000-03295
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 28 Oct 2022 30 Sep 2022 000-03295
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 21 Oct 2022 21 Oct 2022 000-03295
DEF 14A Open DEF 14A document View SEC filing for DEF 14A DEF 14A 26 Aug 2022 25 Aug 2022 000-03295
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K 10-K 26 Aug 2022 30 Jun 2022 000-03295
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 25 Aug 2022 25 Aug 2022 000-03295
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 25 Jul 2022 25 Jul 2022 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 30 Jun 2022 23 Mar 2022
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 30 Jun 2022 23 Mar 2022
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A 03 Jun 2022 005-20001
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A 03 Jun 2022 005-20001
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 03 Jun 2022 02 Jun 2022
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 03 Jun 2022 23 Mar 2022
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 03 Jun 2022 23 Mar 2022
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 02 Jun 2022 01 Jun 2022
SD Open SD document View SEC filing for SD FORM SD 26 May 2022 000-03295
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 06 May 2022 31 Mar 2022 000-03295
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 05 May 2022 05 May 2022 000-03295
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 28 Feb 2022 28 Feb 2022
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 04 Feb 2022 31 Dec 2021 000-03295
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 03 Feb 2022 03 Feb 2022 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 02 Nov 2021 02 Nov 2021
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 29 Oct 2021 30 Sep 2021 000-03295
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 28 Oct 2021 28 Oct 2021 000-03295
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 14 Oct 2021 14 Oct 2021 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 17 Sep 2021 15 Sep 2021
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A 08 Sep 2021 005-20001
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A 08 Sep 2021 005-20001
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 03 Sep 2021 26 Aug 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 02 Sep 2021 31 Aug 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 02 Sep 2021 31 Aug 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 31 Aug 2021 27 Aug 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 31 Aug 2021 27 Aug 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 26 Aug 2021 25 Aug 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 26 Aug 2021 24 Aug 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 26 Aug 2021 24 Aug 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 26 Aug 2021 24 Aug 2021
DEF 14A Open DEF 14A document View SEC filing for DEF 14A DEF 14A 20 Aug 2021 19 Aug 2021 000-03295
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K 10-K 20 Aug 2021 30 Jun 2021 000-03295
8-K Open 8-K document View SEC filing for 8-K 8-K 19 Aug 2021 19 Aug 2021 000-03295
8-K Open 8-K document View SEC filing for 8-K 27 Jul 2021 21 Jul 2021 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 02 Jul 2021 01 Jul 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 02 Jul 2021 01 Jul 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 16 Jun 2021 14 Jun 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 16 Jun 2021 15 Jun 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 10 Jun 2021 08 Jun 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 03 Jun 2021 02 Jun 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 03 Jun 2021 01 Jun 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 03 Jun 2021 01 Jun 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 01 Jun 2021 28 May 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 01 Jun 2021 28 May 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 28 May 2021 26 May 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 19 May 2021 18 May 2021
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 13 May 2021 31 Mar 2021 000-03295
8-K Open 8-K document View SEC filing for 8-K 8-K 12 May 2021 12 May 2021 000-03295
SD Open SD document View SEC filing for SD 28 Apr 2021 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 05 Apr 2021 01 Apr 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 05 Apr 2021 01 Apr 2021
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A 16 Mar 2021 005-20001
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A 16 Mar 2021 005-20001
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 16 Mar 2021 12 Mar 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 12 Mar 2021 10 Mar 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 12 Mar 2021 10 Mar 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 02 Mar 2021 01 Mar 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 02 Mar 2021 01 Mar 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 26 Feb 2021 25 Feb 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 26 Feb 2021 25 Feb 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 26 Feb 2021 25 Feb 2021
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A 12 Feb 2021 005-20001
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A 13G/A KOSS CORPORATION AMDT 7 123120 11 Feb 2021 005-20001
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A 10 Feb 2021 005-20001
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A 10 Feb 2021 005-20001
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 05 Feb 2021 01 Feb 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 05 Feb 2021 03 Feb 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 05 Feb 2021 03 Feb 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 03 Feb 2021 01 Feb 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 03 Feb 2021 01 Feb 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 03 Feb 2021 01 Feb 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 03 Feb 2021 01 Feb 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 03 Feb 2021 01 Feb 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 03 Feb 2021 01 Feb 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 03 Feb 2021 01 Feb 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 03 Feb 2021 01 Feb 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 03 Feb 2021 01 Feb 2021
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 29 Jan 2021 31 Dec 2020 000-03295
8-K Open 8-K document View SEC filing for 8-K 8-K 28 Jan 2021 28 Jan 2021 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 27 Jan 2021 25 Jan 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 27 Jan 2021 25 Jan 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 30 Dec 2020 29 Dec 2020
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 30 Dec 2020 29 Dec 2020
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 12 Nov 2020 10 Nov 2020
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 12 Nov 2020 10 Nov 2020
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 05 Nov 2020 30 Sep 2020 000-03295
8-K Open 8-K document View SEC filing for 8-K 8-K 29 Oct 2020 29 Oct 2020 000-03295
8-K Open 8-K document View SEC filing for 8-K 8-K 15 Oct 2020 14 Oct 2020 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 06 Oct 2020 02 Oct 2020
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 06 Oct 2020 02 Oct 2020
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 15 Sep 2020 11 Sep 2020
DEF 14A Open DEF 14A document View SEC filing for DEF 14A FORM DEF 14A 27 Aug 2020 14 Oct 2020 000-03295
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K FORM 10-K 27 Aug 2020 30 Jun 2020 000-03295
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 20 Aug 2020 20 Aug 2020 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 23 Jul 2020 22 Jul 2020
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 23 Jul 2020 22 Jul 2020
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 23 Jul 2020 22 Jul 2020
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 23 Jul 2020 22 Jul 2020
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 23 Jul 2020 22 Jul 2020
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 23 Jul 2020 23 Jul 2020 000-03295
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 08 May 2020 31 Mar 2020 000-03295
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 07 May 2020 07 May 2020 000-03295
SD Open SD document View SEC filing for SD SD 01 May 2020 000-03295
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A 13 G/A KOSS CORPORATION ADMT 6 123119 11 Feb 2020 005-20001
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 31 Jan 2020 31 Dec 2019 000-03295
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 30 Jan 2020 30 Jan 2020 000-03295
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 12 Nov 2019 30 Sep 2019 000-03295
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 07 Nov 2019 07 Nov 2019 000-03295
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 17 Oct 2019 17 Oct 2019 000-03295
4/A Open 4/A document View SEC filing for 4/A FORM 4/A 27 Sep 2019 29 May 2019
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K FORM 10-K 30 Aug 2019 30 Jun 2019 000-03295
DEF 14A Open DEF 14A document View SEC filing for DEF 14A FORM DEF 14A 30 Aug 2019 16 Oct 2019 000-03295
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 22 Aug 2019 22 Aug 2019 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 25 Jul 2019 24 Jul 2019
4 Open 4 document View SEC filing for 4 FORM 4 25 Jul 2019 24 Jul 2019
4 Open 4 document View SEC filing for 4 FORM 4 25 Jul 2019 24 Jul 2019
4 Open 4 document View SEC filing for 4 FORM 4 25 Jul 2019 24 Jul 2019
4 Open 4 document View SEC filing for 4 FORM 4 25 Jul 2019 24 Jul 2019
4 Open 4 document View SEC filing for 4 FORM 4 30 May 2019 29 May 2019
4 Open 4 document View SEC filing for 4 FORM 4 24 May 2019 23 May 2019
4 Open 4 document View SEC filing for 4 FORM 4 23 May 2019 23 May 2019
4 Open 4 document View SEC filing for 4 FORM 4 20 May 2019 17 May 2019
8-K Open 8-K document View SEC filing for 8-K 8-K 16 May 2019 16 May 2019 000-03295
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 3.31.2019 10 May 2019 31 Mar 2019 000-03295
8-K Open 8-K document View SEC filing for 8-K 8-K 09 May 2019 09 May 2019 000-03295
SD Open SD document View SEC filing for SD SD 09 May 2019 000-03295
8-K Open 8-K document View SEC filing for 8-K 8-K 07 Mar 2019 07 Mar 2019 000-03295
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A 13 G/A KOSS CORPORATION ADMT 5 123118 31 Jan 2019 005-20001
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 25 Jan 2019 31 Dec 2018 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 24 Jan 2019 24 Jan 2019 000-03295
8-K Open 8-K document View SEC filing for 8-K 8-K 18 Dec 2018 18 Dec 2018 000-03295
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 02 Nov 2018 30 Sep 2018 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 01 Nov 2018 01 Nov 2018 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 12 Oct 2018 10 Oct 2018
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 11 Oct 2018 11 Oct 2018 000-03295
DEF 14A Open DEF 14A document View SEC filing for DEF 14A DEF 14A 23 Aug 2018 10 Oct 2018 000-03295
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K ANNUAL REPORT PURSUANT TO SECTION 13 AND 15(D) 23 Aug 2018 30 Jun 2018 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 16 Aug 2018 16 Aug 2018 000-03295
4/A Open 4/A document View SEC filing for 4/A FORM 4/A 01 Aug 2018 25 Jul 2018
4 Open 4 document View SEC filing for 4 FORM 4 27 Jul 2018 25 Jul 2018
4 Open 4 document View SEC filing for 4 FORM 4 27 Jul 2018 25 Jul 2018
4 Open 4 document View SEC filing for 4 FORM 4 27 Jul 2018 25 Jul 2018
4 Open 4 document View SEC filing for 4 FORM 4 27 Jul 2018 25 Jul 2018
4 Open 4 document View SEC filing for 4 FORM 4 27 Jul 2018 25 Jul 2018
4 Open 4 document View SEC filing for 4 FORM 4 14 May 2018 09 May 2018
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 11 May 2018 31 Mar 2018 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 10 May 2018 09 May 2018
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 10 May 2018 10 May 2018 000-03295
SD Open SD document View SEC filing for SD FORM SD 08 Mar 2018 000-03295
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A KOSS CORPORATION AMDT 4 123117 07 Feb 2018 005-20001
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 31 Jan 2018 31 Dec 2017 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 30 Jan 2018 30 Jan 2018 000-03295
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 27 Oct 2017 30 Sep 2017 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 25 Oct 2017 25 Oct 2017 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 12 Oct 2017 12 Oct 2017 000-03295
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K ANNUAL REPORT PURSUANT TO SECTION 13 AND 15(D) 25 Aug 2017 30 Jun 2017 000-03295
DEF 14A Open DEF 14A document View SEC filing for DEF 14A DEFINITIVE PROXY STATEMENT 25 Aug 2017 11 Oct 2017 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 25 Aug 2017 24 Aug 2017 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 27 Jul 2017 26 Jul 2017
4 Open 4 document View SEC filing for 4 FORM 4 27 Jul 2017 26 Jul 2017
4 Open 4 document View SEC filing for 4 FORM 4 27 Jul 2017 26 Jul 2017
4 Open 4 document View SEC filing for 4 FORM 4 27 Jul 2017 26 Jul 2017
4 Open 4 document View SEC filing for 4 FORM 4 27 Jul 2017 26 Jul 2017
3 Open 3 document View SEC filing for 3 FORM 3 10 Jul 2017 01 Jul 2017
4 Open 4 document View SEC filing for 4 FORM 4 19 May 2017 17 May 2017
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 17 May 2017 17 May 2017 000-03295
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 12 May 2017 31 Mar 2017 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 11 May 2017 11 May 2017 000-03295
SD Open SD document View SEC filing for SD FORM SD 02 May 2017 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 10 Mar 2017 09 Mar 2017 000-03295
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A 13G/A KOSS CORPORATION AMDT 3 123116 10 Feb 2017 005-20001
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 26 Jan 2017 31 Dec 2016 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 26 Jan 2017 26 Jan 2017 000-03295
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 28 Oct 2016 30 Sep 2016 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 27 Oct 2016 27 Oct 2016 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 13 Oct 2016 12 Oct 2016 000-03295
DEF 14A Open DEF 14A document View SEC filing for DEF 14A DEFINITIVE PROXY STATEMENT 25 Aug 2016 12 Oct 2016 000-03295
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K ANNUAL REPORT PURSUANT TO SECTION 13 AND 15(D) 25 Aug 2016 30 Jun 2016 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 18 Aug 2016 18 Aug 2016 000-03295
3/A Open 3/A document View SEC filing for 3/A FORM 3/A 29 Jul 2016 01 Jul 2016
4 Open 4 document View SEC filing for 4 FORM 4 28 Jul 2016 27 Jul 2016
4 Open 4 document View SEC filing for 4 FORM 4 28 Jul 2016 27 Jul 2016
4 Open 4 document View SEC filing for 4 FORM 4 28 Jul 2016 27 Jul 2016
4 Open 4 document View SEC filing for 4 FORM 4 28 Jul 2016 27 Jul 2016
4 Open 4 document View SEC filing for 4 FORM 4 28 Jul 2016 27 Jul 2016
3 Open 3 document View SEC filing for 3 FORM 3 28 Jul 2016 01 Jul 2016
SD Open SD document View SEC filing for SD FORM SD 31 May 2016 000-03295
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 13 May 2016 31 Mar 2016 000-03295
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 12 May 2016 12 May 2016 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 25 Feb 2016 23 Feb 2016
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 12 Feb 2016 12 Feb 2016 000-03295
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 29 Jan 2016 31 Dec 2015 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 28 Jan 2016 28 Jan 2016 000-03295
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SC 13G/A KOSS CORPORATION AMEND NO. 2 - 2015 22 Jan 2016 005-20001
4 Open 4 document View SEC filing for 4 FORM 4 18 Nov 2015 16 Nov 2015
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 30 Oct 2015 30 Sep 2015 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 29 Oct 2015 29 Oct 2015 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 21 Oct 2015 19 Oct 2015
4 Open 4 document View SEC filing for 4 FORM 4 21 Oct 2015 19 Oct 2015
3 Open 3 document View SEC filing for 3 FORM 3 19 Oct 2015 14 Oct 2015
3 Open 3 document View SEC filing for 3 FORM 3 19 Oct 2015 14 Oct 2015
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 15 Oct 2015 14 Oct 2015 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 02 Sep 2015 02 Sep 2015
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K ANNUAL REPORT PURSUANT TO SECTION 13 AND 15(D) 28 Aug 2015 30 Jun 2015 000-03295
DEF 14A Open DEF 14A document View SEC filing for DEF 14A DEFINITIVE PROXY STATEMENT 27 Aug 2015 27 Aug 2015 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 21 Aug 2015 20 Aug 2015 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 30 Jul 2015 29 Jul 2015
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SD Open SD document View SEC filing for SD FORM SD 28 May 2015 000-03295
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 08 May 2015 31 Mar 2015 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 07 May 2015 07 May 2015 000-03295
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SC 13G/A KOSS CORPORATION AMEND NO. 1 - 2014 13 Feb 2015 005-20001
4/A Open 4/A document View SEC filing for 4/A FORM 4/A 11 Feb 2015 11 Feb 2015
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10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 30 Jan 2015 31 Dec 2014 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 30 Jan 2015 29 Jan 2015 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 19 Nov 2014 19 Nov 2014
4 Open 4 document View SEC filing for 4 FORM 4 12 Nov 2014 11 Nov 2014
4 Open 4 document View SEC filing for 4 FORM 4 07 Nov 2014 07 Nov 2014
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 06 Nov 2014 05 Nov 2014 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 06 Nov 2014 06 Nov 2014
4 Open 4 document View SEC filing for 4 FORM 4 06 Nov 2014 06 Nov 2014
4 Open 4 document View SEC filing for 4 FORM 4 06 Nov 2014 06 Nov 2014
4 Open 4 document View SEC filing for 4 FORM 4 06 Nov 2014 06 Nov 2014
4 Open 4 document View SEC filing for 4 FORM 4 05 Nov 2014 05 Nov 2014
4 Open 4 document View SEC filing for 4 FORM 4 05 Nov 2014 05 Nov 2014
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 31 Oct 2014 30 Sep 2014 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 24 Oct 2014 24 Oct 2014 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 22 Oct 2014 22 Oct 2014 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 15 Oct 2014 15 Oct 2014 000-03295
SD Open SD document View SEC filing for SD FORM SD 05 Sep 2014 000-03295
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K ANNUAL REPORT PURSUANT TO SECTION 13 AND 15(D) 28 Aug 2014 30 Jun 2014 000-03295
DEF 14A Open DEF 14A document View SEC filing for DEF 14A DEFINITIVE PROXY STATEMENT 28 Aug 2014 15 Oct 2014 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 27 Aug 2014 27 Aug 2014 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 07 Aug 2014 07 Aug 2014
4 Open 4 document View SEC filing for 4 FORM 4 06 Aug 2014 31 Jul 2014
4 Open 4 document View SEC filing for 4 FORM 4 25 Jul 2014 23 Jul 2014
4 Open 4 document View SEC filing for 4 FORM 4 25 Jul 2014 23 Jul 2014
4 Open 4 document View SEC filing for 4 FORM 4 25 Jul 2014 23 Jul 2014
4 Open 4 document View SEC filing for 4 FORM 4 25 Jul 2014 23 Jul 2014
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 15 May 2014 31 Mar 2014 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 14 May 2014 14 May 2014 000-03295
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 14 Feb 2014 31 Dec 2013 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 13 Feb 2014 13 Feb 2014 000-03295
8-K/A Open 8-K/A document View SEC filing for 8-K/A 8-K/A 11 Feb 2014 30 Jan 2014 000-03295
SC 13G Open SC 13G document View SEC filing for SC 13G KOSS CORPORATION SCHEDULE 13G 31 Jan 2014 005-20001
4 Open 4 document View SEC filing for 4 FORM 4 25 Nov 2013 22 Nov 2013
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 01 Nov 2013 30 Sep 2013 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 25 Oct 2013 23 Oct 2013 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 25 Oct 2013 24 Oct 2013 000-03295
SC 13D Open SC 13D document View SEC filing for SC 13D 15 Oct 2013 005-20001
SC 13D Open SC 13D document View SEC filing for SC 13D 15 Oct 2013 005-20001
SC 13D Open SC 13D document View SEC filing for SC 13D 15 Oct 2013 005-20001
SC 13D Open SC 13D document View SEC filing for SC 13D 15 Oct 2013 005-20001
3 Open 3 document View SEC filing for 3 FORM 3 10 Sep 2013 17 Jan 2012
3 Open 3 document View SEC filing for 3 FORM 3 10 Sep 2013 05 Nov 2012
3 Open 3 document View SEC filing for 3 FORM 3 10 Sep 2013 21 Dec 2012
3 Open 3 document View SEC filing for 3 FORM 3 10 Sep 2013 21 Dec 2012
DEF 14A Open DEF 14A document View SEC filing for DEF 14A DEFINITIVE PROXY STATEMENT 05 Sep 2013 23 Oct 2013 000-03295
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K ANNUAL REPORT PURSUANT TO SECTION 13 AND 15(D) 23 Aug 2013 30 Jun 2013 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 06 Aug 2013 06 Aug 2013 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 26 Jul 2013 20 Dec 2012
4 Open 4 document View SEC filing for 4 FORM 4 26 Jul 2013 20 Dec 2012
4 Open 4 document View SEC filing for 4 FORM 4 26 Jul 2013 24 Jul 2013
4 Open 4 document View SEC filing for 4 FORM 4 26 Jul 2013 24 Jul 2013
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 05 Jul 2013 03 Jul 2013 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 31 May 2013 29 May 2013
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 10 May 2013 31 Mar 2013 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 25 Apr 2013 25 Apr 2013 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 07 Mar 2013 06 Mar 2013
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4 Open 4 document View SEC filing for 4 FORM 4 01 Mar 2013 01 Mar 2013
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 01 Feb 2013 31 Dec 2012 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 30 Jan 2013 29 Jan 2013 000-03295
UPLOAD Open UPLOAD document View SEC filing for UPLOAD 28 Jan 2013
CORRESP Open CORRESP document View SEC filing for CORRESP 18 Jan 2013
UPLOAD Open UPLOAD document View SEC filing for UPLOAD 09 Jan 2013
4 Open 4 document View SEC filing for 4 FORM 4 08 Nov 2012 07 Nov 2012
S-8 Open S-8 document View SEC filing for S-8 REGISTRATION STATEMENT ON FORM S-8 05 Nov 2012 333-184754
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 02 Nov 2012 30 Sep 2012 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 25 Oct 2012 27 Jul 2011
4 Open 4 document View SEC filing for 4 FORM 4 25 Oct 2012 27 Jul 2011
4 Open 4 document View SEC filing for 4 FORM 4 25 Oct 2012 27 Jul 2011
4 Open 4 document View SEC filing for 4 FORM 4 25 Oct 2012 27 Jul 2011
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 25 Oct 2012 24 Oct 2012 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 09 Oct 2012 05 Oct 2012 000-03295
DEF 14A Open DEF 14A document View SEC filing for DEF 14A DEFINITIVE PROXY STATEMENT 27 Aug 2012 30 Jun 2012 000-03295
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K ANNUAL REPORT PURSUANT TO SECTION 13 AND 15(D) 27 Aug 2012 30 Jun 2012 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 24 Aug 2012 23 Aug 2012 000-03295
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(D) 11 May 2012 31 Mar 2012 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 27 Apr 2012 26 Apr 2012 000-03295
4 Open 4 document View SEC filing for 4 MATTSON 2.3.12 FORM 4 03 Feb 2012 01 Feb 2012
3 Open 3 document View SEC filing for 3 MATTSON FORM 3 03 Feb 2012 01 Feb 2012
4 Open 4 document View SEC filing for 4 NIXON 2/3/2012 FORM 4 03 Feb 2012 01 Feb 2012
4 Open 4 document View SEC filing for 4 STOLLENWERK 2.2.12 FORM 4 03 Feb 2012 01 Feb 2012
4 Open 4 document View SEC filing for 4 DOERR 2.3.12 FORM 4 03 Feb 2012 01 Feb 2012
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(D) 03 Feb 2012 31 Dec 2011 000-03295
3 Open 3 document View SEC filing for 3 DOERR FORM 3 03 Feb 2012 22 Jul 1987
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 26 Jan 2012 26 Jan 2012 000-03295
UPLOAD Open UPLOAD document View SEC filing for UPLOAD 21 Dec 2011
CORRESP Open CORRESP document View SEC filing for CORRESP 19 Dec 2011
10-Q/A Open 10-Q/A document View SEC filing for 10-Q/A AMENDMENT TO QUARTERLY REPORT PURSUANT TO SECTIONS 13 OR 15(D) 15 Dec 2011 30 Sep 2011 000-03295
4 Open 4 document View SEC filing for 4 JOHN KOSS SR 12.15.11 FORM 4 15 Dec 2011 14 Dec 2011
UPLOAD Open UPLOAD document View SEC filing for UPLOAD 14 Dec 2011
4 Open 4 document View SEC filing for 4 JOHN KOSS SR 12.13.11 FORM 4 13 Dec 2011 09 Dec 2011
4 Open 4 document View SEC filing for 4 JOHN KOSS SR 12.6.11 FORM 4 06 Dec 2011 02 Dec 2011
4 Open 4 document View SEC filing for 4 JOHN KOSS SR 12.1.11 FORM 4 01 Dec 2011 29 Nov 2011
4 Open 4 document View SEC filing for 4 JOHN KOSS SR 11.22.11 FORM 4 22 Nov 2011 18 Nov 2011
4 Open 4 document View SEC filing for 4 JOHN KOSS SR 11.18.11 FORM 4 18 Nov 2011 16 Nov 2011
4 Open 4 document View SEC filing for 4 JOHN KOSS SR 11.15.11 FORM 4 15 Nov 2011 11 Nov 2011
4 Open 4 document View SEC filing for 4 J KOSS SR 11.8.11 FORM 4 09 Nov 2011 07 Nov 2011
4 Open 4 document View SEC filing for 4 J KOSS SR 11.3.11 FORM 4 03 Nov 2011 01 Nov 2011
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q QUARTERLY REPORT PURSUANT TO SECTIONS 13 OR 15(D) 28 Oct 2011 30 Sep 2011 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 25 Oct 2011 25 Oct 2011 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 25 Oct 2011 24 Oct 2011 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 11 Oct 2011 05 Oct 2011 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 09 Sep 2011 06 Sep 2011 000-03295
DEF 14A Open DEF 14A document View SEC filing for DEF 14A DEFINITIVE PROXY STATEMENT 02 Sep 2011 05 Oct 2011 000-03295
10-K Open 10-K document View SEC filing for 10-K ANNUAL REPORT PURSUANT TO SECTION 13 AND 15(D) 02 Sep 2011 30 Jun 2011 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 31 Aug 2011 30 Aug 2011 000-03295
4 Open 4 document View SEC filing for 4 7.15.11 FORM 4 18 Jul 2011 30 Apr 2003
4 Open 4 document View SEC filing for 4 7/15/2011 FORM 4 18 Jul 2011 09 May 2007
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 30 Jun 2011 24 Jun 2011 000-03295
4 Open 4 document View SEC filing for 4 01 Jun 2011 31 May 2011
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 23 May 2011 19 May 2011 000-03295
10-Q Open 10-Q document View SEC filing for 10-Q QUARTERLY REPORT PURSUANT TO SECTIONS 13 OR 15(D) 13 May 2011 31 Mar 2011 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 21 Apr 2011 20 Apr 2011 000-03295
4 Open 4 document View SEC filing for 4 J KOSS SR 3.16.11 FORM 4 16 Mar 2011 16 Mar 2011
4 Open 4 document View SEC filing for 4 JOHN KOSS SR 3.1.11 FORM 4 03 Mar 2011 01 Mar 2011
4 Open 4 document View SEC filing for 4 DAVE SMITH 3.2.11 FORM 4 02 Mar 2011 02 Mar 2011
4 Open 4 document View SEC filing for 4 JOHN KOSS SR 2.24.11 FORM 4 24 Feb 2011 22 Feb 2011
4 Open 4 document View SEC filing for 4 JOHN KOSS SR 2.17.11 FORM 4 18 Feb 2011 17 Feb 2011
4 Open 4 document View SEC filing for 4 JOHN KOSS SR. 2/16/11 FORM 4 16 Feb 2011 16 Feb 2011
4 Open 4 document View SEC filing for 4 JOHN KOSS SR. 2/11/11 FORM 4 11 Feb 2011 09 Feb 2011
4 Open 4 document View SEC filing for 4 NIXON 2/7/11 FORM 4 08 Feb 2011 07 Feb 2011
10-Q Open 10-Q document View SEC filing for 10-Q QUARTERLY REPORT PURSUANT TO SECTIONS 13 OR 15(D) 28 Jan 2011 31 Dec 2010 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 20 Jan 2011 20 Jan 2011 000-03295
4 Open 4 document View SEC filing for 4 12/17/10 FORM 4 17 Dec 2010 16 Dec 2010
4 Open 4 document View SEC filing for 4 FORM 4 11/12/10 10 Dec 2010 08 May 2006
4 Open 4 document View SEC filing for 4 11/15/10 FORM 4 16 Nov 2010 12 Nov 2010
4 Open 4 document View SEC filing for 4 FORM 4 09 Nov 2010 19 Jan 2010
10-Q Open 10-Q document View SEC filing for 10-Q QUARTERLY REPORT PURSUANT TO SECTIONS 13 OR 15(D) 01 Nov 2010 30 Sep 2010 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 28 Oct 2010 27 Oct 2010 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 19 Oct 2010 19 Oct 2010 000-03295
10-K/A Open 10-K/A document View SEC filing for 10-K/A AMENDMENT TO ANNUAL REPORT PURSUANT TO SECTION 13 AND 15(D) 12 Oct 2010 30 Jun 2010 000-03295
UPLOAD Open UPLOAD document View SEC filing for UPLOAD 23 Sep 2010
CORRESP Open CORRESP document View SEC filing for CORRESP 20 Sep 2010
DEFA14A Open DEFA14A document View SEC filing for DEFA14A DEFINITIVE ADDITIONAL PROXY SOLICITING MATERIALS 20 Sep 2010 000-03295
DEF 14A Open DEF 14A document View SEC filing for DEF 14A DEFINITIVE PROXY STATEMENT 20 Sep 2010 27 Oct 2010 000-03295
10-K Open 10-K document View SEC filing for 10-K ANNUAL REPORT PURSUANT TO SECTION 13 AND 15(D) 20 Sep 2010 30 Jun 2010 000-03295
UPLOAD Open UPLOAD document View SEC filing for UPLOAD 13 Sep 2010
CORRESP Open CORRESP document View SEC filing for CORRESP 30 Aug 2010
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 20 Aug 2010 19 Aug 2010 000-03295
UPLOAD Open UPLOAD document View SEC filing for UPLOAD 16 Aug 2010
CORRESP Open CORRESP document View SEC filing for CORRESP 23 Jul 2010
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 06 Jul 2010 01 Jul 2010 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 30 Jun 2010 30 Jun 2010 000-03295
10-Q/A Open 10-Q/A document View SEC filing for 10-Q/A AMENDMENT TO QUARTERLY REPORT PURSUANT TO SECTIONS 13 OR 15(D) 30 Jun 2010 31 Mar 2010 000-03295
10-Q/A Open 10-Q/A document View SEC filing for 10-Q/A AMENDMENT TO QUARTERLY REPORT PURSUANT TO SECTIONS 13 OR 15(D) 30 Jun 2010 31 Dec 2009 000-03295
10-Q/A Open 10-Q/A document View SEC filing for 10-Q/A AMENDMENT TO QUARTERLY REPORT PURSUANT TO SECTIONS 13 OR 15(D) 30 Jun 2010 30 Sep 2009 000-03295
10-K/A Open 10-K/A document View SEC filing for 10-K/A AMENDMENT TO ANNUAL REPORT PURSUANT TO SECTION 13 AND 15(D) 30 Jun 2010 30 Jun 2009 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 08 Jun 2010 03 Jun 2010 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 17 May 2010 12 May 2010 000-03295
10-Q Open 10-Q document View SEC filing for 10-Q QUARTERLY REPORT PURSUANT TO SECTIONS 13 OR 15(D) 17 May 2010 31 Mar 2010 000-03295
CORRESP Open CORRESP document View SEC filing for CORRESP 10 May 2010
CORRESP Open CORRESP document View SEC filing for CORRESP 29 Mar 2010
UPLOAD Open UPLOAD document View SEC filing for UPLOAD 18 Mar 2010
CORRESP Open CORRESP document View SEC filing for CORRESP 12 Mar 2010
UPLOAD Open UPLOAD document View SEC filing for UPLOAD 08 Mar 2010
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 26 Feb 2010 25 Feb 2010 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 24 Feb 2010 19 Feb 2010 000-03295
3 Open 3 document View SEC filing for 3 FORM 3 - 18 Feb 2010 18 Jan 2010
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 17 Feb 2010 16 Feb 2010 000-03295
10-Q Open 10-Q document View SEC filing for 10-Q QUARTERLY REPORT PURSUANT TO SECTIONS 13 OR 15(D) 16 Feb 2010 31 Dec 2009 000-03295
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A 04 Feb 2010 005-20001
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A 03 Feb 2010 005-20001
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 20 Jan 2010 18 Jan 2010 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 11 Jan 2010 11 Jan 2010 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 07 Jan 2010 05 Jan 2010 000-03295
8-K/A Open 8-K/A document View SEC filing for 8-K/A AMENDMENT TO FORM 8-K 07 Jan 2010 05 Jan 2010 000-03295
8-K Open 8-K document View SEC filing for 8-K CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES 04 Jan 2010 31 Dec 2009 000-03295

About this filer

KOSS CORP files with the SEC under CIK 0000056701. This page aggregates EDGAR filings and related ownership activity.

Industry: Household Audio & Video Equipment.

See insider transactions for this issuer.

FAQ

What is a CIK?
A Central Index Key (CIK) is a unique identifier assigned by the SEC to each filer.
Why are some filings missing?
New filings appear as the SEC updates EDGAR, and older records can vary by availability.
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Updates follow new EDGAR submissions and periodic data refreshes.

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