Koss Corp SEC filings KOSS
Koss Corp has 709 filings in SEC EDGAR's recent list, going back to Feb 14, 1994. Its latest annual report, Form ARS, was filed on Aug 28, 2026 for the period ended Jun 30, 2026. The latest quarterly report (Form 10-Q) was filed on Oct 30, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Oct 29, 2026 (results of operations). The company's fiscal year ends on June 30.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | May 8, 2026 | May 6, 2026 |
| 4 | Insider transaction | May 8, 2026 | May 6, 2026 |
| 4 | Insider transaction | Feb 17, 2026 | Feb 17, 2026 |
| 4 | Insider transaction | Dec 4, 2025 | Dec 2, 2025 |
| 4 | Insider transaction | Jun 17, 2025 | Jun 10, 2025 |
| 4 | Insider transaction | Jun 17, 2025 | Jun 12, 2025 |
| 4 | Insider transaction | Dec 16, 2024 | Dec 12, 2024 |
| 4 | Insider transaction | May 31, 2024 | May 30, 2024 |
| 4 | Insider transaction | May 21, 2024 | May 20, 2024 |
| 3 | Initial insider ownership | Aug 21, 2023 | Oct 19, 2022 |
| 4 | Insider transaction | Jun 30, 2022 | Mar 23, 2022 |
| 4 | Insider transaction | Jun 30, 2022 | Mar 23, 2022 |
| SC 13D/A | Amended ownership over 5% (active) | Jun 3, 2022 | — |
| SC 13D/A | Amended ownership over 5% (active) | Jun 3, 2022 | — |
| 4 | Insider transaction | Jun 3, 2022 | Jun 2, 2022 |
| 4 | Insider transaction | Jun 3, 2022 | Mar 23, 2022 |
| 4 | Insider transaction | Jun 3, 2022 | Mar 23, 2022 |
| 4 | Insider transaction | Jun 2, 2022 | Jun 1, 2022 |
| 3 | Initial insider ownership | Feb 28, 2022 | Feb 28, 2022 |
| 4 | Insider transaction | Nov 2, 2021 | Nov 2, 2021 |
| 4 | Insider transaction | Sep 17, 2021 | Sep 15, 2021 |
| SC 13D/A | Amended ownership over 5% (active) | Sep 8, 2021 | — |
| SC 13D/A | Amended ownership over 5% (active) | Sep 8, 2021 | — |
| 4 | Insider transaction | Sep 3, 2021 | Aug 26, 2021 |
| 4 | Insider transaction | Sep 2, 2021 | Aug 31, 2021 |
| 4 | Insider transaction | Sep 2, 2021 | Aug 31, 2021 |
| 4 | Insider transaction | Aug 31, 2021 | Aug 27, 2021 |
| 4 | Insider transaction | Aug 31, 2021 | Aug 27, 2021 |
| 4 | Insider transaction | Aug 26, 2021 | Aug 25, 2021 |
| 4 | Insider transaction | Aug 26, 2021 | Aug 24, 2021 |
| 4 | Insider transaction | Aug 26, 2021 | Aug 24, 2021 |
| 4 | Insider transaction | Aug 26, 2021 | Aug 24, 2021 |
| 4 | Insider transaction | Jul 2, 2021 | Jul 1, 2021 |
| 4 | Insider transaction | Jul 2, 2021 | Jul 1, 2021 |
| 4 | Insider transaction | Jun 16, 2021 | Jun 14, 2021 |
| 4 | Insider transaction | Jun 16, 2021 | Jun 15, 2021 |
| 4 | Insider transaction | Jun 10, 2021 | Jun 8, 2021 |
| 4 | Insider transaction | Jun 3, 2021 | Jun 2, 2021 |
| 4 | Insider transaction | Jun 3, 2021 | Jun 1, 2021 |
| 4 | Insider transaction | Jun 3, 2021 | Jun 1, 2021 |
| 4 | Insider transaction | Jun 1, 2021 | May 28, 2021 |
| 4 | Insider transaction | Jun 1, 2021 | May 28, 2021 |
| 4 | Insider transaction | May 28, 2021 | May 26, 2021 |
| 4 | Insider transaction | May 19, 2021 | May 18, 2021 |
| 4 | Insider transaction | Apr 5, 2021 | Apr 1, 2021 |
| 4 | Insider transaction | Apr 5, 2021 | Apr 1, 2021 |
| SC 13D/A | Amended ownership over 5% (active) | Mar 16, 2021 | — |
| SC 13D/A | Amended ownership over 5% (active) | Mar 16, 2021 | — |
| 4 | Insider transaction | Mar 16, 2021 | Mar 12, 2021 |
| 4 | Insider transaction | Mar 12, 2021 | Mar 10, 2021 |
| 4 | Insider transaction | Mar 12, 2021 | Mar 10, 2021 |
| 4 | Insider transaction | Mar 2, 2021 | Mar 1, 2021 |
| 4 | Insider transaction | Mar 2, 2021 | Mar 1, 2021 |
| 4 | Insider transaction | Feb 26, 2021 | Feb 25, 2021 |
| 4 | Insider transaction | Feb 26, 2021 | Feb 25, 2021 |
| 4 | Insider transaction | Feb 26, 2021 | Feb 25, 2021 |
| SC 13D/A | Amended ownership over 5% (active) | Feb 12, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 11, 2021 | — |
| SC 13D/A | Amended ownership over 5% (active) | Feb 10, 2021 | — |
| SC 13D/A | Amended ownership over 5% (active) | Feb 10, 2021 | — |
| 4 | Insider transaction | Feb 5, 2021 | Feb 1, 2021 |
| 4 | Insider transaction | Feb 5, 2021 | Feb 3, 2021 |
| 4 | Insider transaction | Feb 5, 2021 | Feb 3, 2021 |
| 4 | Insider transaction | Feb 3, 2021 | Feb 1, 2021 |
| 4 | Insider transaction | Feb 3, 2021 | Feb 1, 2021 |
| 4 | Insider transaction | Feb 3, 2021 | Feb 1, 2021 |
| 4 | Insider transaction | Feb 3, 2021 | Feb 1, 2021 |
| 4 | Insider transaction | Feb 3, 2021 | Feb 1, 2021 |
| 4 | Insider transaction | Feb 3, 2021 | Feb 1, 2021 |
| 4 | Insider transaction | Feb 3, 2021 | Feb 1, 2021 |
| 4 | Insider transaction | Feb 3, 2021 | Feb 1, 2021 |
| 4 | Insider transaction | Feb 3, 2021 | Feb 1, 2021 |
| 4 | Insider transaction | Jan 27, 2021 | Jan 25, 2021 |
| 4 | Insider transaction | Jan 27, 2021 | Jan 25, 2021 |
| 4 | Insider transaction | Dec 30, 2020 | Dec 29, 2020 |
| 4 | Insider transaction | Dec 30, 2020 | Dec 29, 2020 |
| 4 | Insider transaction | Nov 12, 2020 | Nov 10, 2020 |
| 4 | Insider transaction | Nov 12, 2020 | Nov 10, 2020 |
| 4 | Insider transaction | Oct 6, 2020 | Oct 2, 2020 |
| 4 | Insider transaction | Oct 6, 2020 | Oct 2, 2020 |
| 4 | Insider transaction | Sep 15, 2020 | Sep 11, 2020 |
| 4 | Insider transaction | Jul 23, 2020 | Jul 22, 2020 |
| 4 | Insider transaction | Jul 23, 2020 | Jul 22, 2020 |
| 4 | Insider transaction | Jul 23, 2020 | Jul 22, 2020 |
| 4 | Insider transaction | Jul 23, 2020 | Jul 22, 2020 |
| 4 | Insider transaction | Jul 23, 2020 | Jul 22, 2020 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 11, 2020 | — |
| 4/A | Form 4/a | Sep 27, 2019 | May 29, 2019 |
| 4 | Insider transaction | Jul 25, 2019 | Jul 24, 2019 |
| 4 | Insider transaction | Jul 25, 2019 | Jul 24, 2019 |
| 4 | Insider transaction | Jul 25, 2019 | Jul 24, 2019 |
| 4 | Insider transaction | Jul 25, 2019 | Jul 24, 2019 |
| 4 | Insider transaction | Jul 25, 2019 | Jul 24, 2019 |
| 4 | Insider transaction | May 30, 2019 | May 29, 2019 |
| 4 | Insider transaction | May 24, 2019 | May 23, 2019 |
| 4 | Insider transaction | May 23, 2019 | May 23, 2019 |
| 4 | Insider transaction | May 20, 2019 | May 17, 2019 |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 31, 2019 | — |
| 4 | Insider transaction | Oct 12, 2018 | Oct 10, 2018 |
| 4/A | Form 4/a | Aug 1, 2018 | Jul 25, 2018 |
| 4 | Insider transaction | Jul 27, 2018 | Jul 25, 2018 |
| 4 | Insider transaction | Jul 27, 2018 | Jul 25, 2018 |
| 4 | Insider transaction | Jul 27, 2018 | Jul 25, 2018 |
| 4 | Insider transaction | Jul 27, 2018 | Jul 25, 2018 |
| 4 | Insider transaction | Jul 27, 2018 | Jul 25, 2018 |
| 4 | Insider transaction | May 14, 2018 | May 9, 2018 |
| 4 | Insider transaction | May 10, 2018 | May 9, 2018 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 7, 2018 | — |
| 4 | Insider transaction | Jul 27, 2017 | Jul 26, 2017 |
| 4 | Insider transaction | Jul 27, 2017 | Jul 26, 2017 |
| 4 | Insider transaction | Jul 27, 2017 | Jul 26, 2017 |
| 4 | Insider transaction | Jul 27, 2017 | Jul 26, 2017 |
| 4 | Insider transaction | Jul 27, 2017 | Jul 26, 2017 |
| 3 | Initial insider ownership | Jul 10, 2017 | Jul 1, 2017 |
| 4 | Insider transaction | May 19, 2017 | May 17, 2017 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 10, 2017 | — |
| 3/A | Form 3/a | Jul 29, 2016 | Jul 1, 2016 |
| 4 | Insider transaction | Jul 28, 2016 | Jul 27, 2016 |
| 4 | Insider transaction | Jul 28, 2016 | Jul 27, 2016 |
| 4 | Insider transaction | Jul 28, 2016 | Jul 27, 2016 |
| 4 | Insider transaction | Jul 28, 2016 | Jul 27, 2016 |
| 4 | Insider transaction | Jul 28, 2016 | Jul 27, 2016 |
| 3 | Initial insider ownership | Jul 28, 2016 | Jul 1, 2016 |
| 4 | Insider transaction | Feb 25, 2016 | Feb 23, 2016 |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 22, 2016 | — |
| 4 | Insider transaction | Nov 18, 2015 | Nov 16, 2015 |
| 4 | Insider transaction | Oct 21, 2015 | Oct 19, 2015 |
| 4 | Insider transaction | Oct 21, 2015 | Oct 19, 2015 |
| 3 | Initial insider ownership | Oct 19, 2015 | Oct 14, 2015 |
| 3 | Initial insider ownership | Oct 19, 2015 | Oct 14, 2015 |
| 4 | Insider transaction | Sep 2, 2015 | Sep 2, 2015 |
| 4 | Insider transaction | Jul 30, 2015 | Jul 29, 2015 |
| 4 | Insider transaction | Jul 30, 2015 | Jul 29, 2015 |
| 4 | Insider transaction | Jul 30, 2015 | Jul 29, 2015 |
| 4 | Insider transaction | Jul 30, 2015 | Jul 29, 2015 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2015 | — |
| 4/A | Form 4/a | Feb 11, 2015 | Feb 11, 2015 |
| 4 | Insider transaction | Feb 11, 2015 | Feb 11, 2015 |
| 4 | Insider transaction | Nov 19, 2014 | Nov 19, 2014 |
| 4 | Insider transaction | Nov 12, 2014 | Nov 11, 2014 |
| 4 | Insider transaction | Nov 7, 2014 | Nov 7, 2014 |
| 4 | Insider transaction | Nov 6, 2014 | Nov 6, 2014 |
| 4 | Insider transaction | Nov 6, 2014 | Nov 6, 2014 |
| 4 | Insider transaction | Nov 6, 2014 | Nov 6, 2014 |
| 4 | Insider transaction | Nov 6, 2014 | Nov 6, 2014 |
| 4 | Insider transaction | Nov 5, 2014 | Nov 5, 2014 |
| 4 | Insider transaction | Nov 5, 2014 | Nov 5, 2014 |
| 4 | Insider transaction | Aug 7, 2014 | Aug 7, 2014 |
| 4 | Insider transaction | Aug 6, 2014 | Jul 31, 2014 |
| 4 | Insider transaction | Jul 25, 2014 | Jul 23, 2014 |
| 4 | Insider transaction | Jul 25, 2014 | Jul 23, 2014 |
| 4 | Insider transaction | Jul 25, 2014 | Jul 23, 2014 |
| 4 | Insider transaction | Jul 25, 2014 | Jul 23, 2014 |
| SC 13G | Ownership over 5% (passive) | Jan 31, 2014 | — |
| 4 | Insider transaction | Nov 25, 2013 | Nov 22, 2013 |
| SC 13D | Ownership over 5% (active) | Oct 15, 2013 | — |
| SC 13D | Ownership over 5% (active) | Oct 15, 2013 | — |
| SC 13D | Ownership over 5% (active) | Oct 15, 2013 | — |
| SC 13D | Ownership over 5% (active) | Oct 15, 2013 | — |
| 3 | Initial insider ownership | Sep 10, 2013 | Jan 17, 2012 |
| 3 | Initial insider ownership | Sep 10, 2013 | Nov 5, 2012 |
| 3 | Initial insider ownership | Sep 10, 2013 | Dec 21, 2012 |
| 3 | Initial insider ownership | Sep 10, 2013 | Dec 21, 2012 |
| 4 | Insider transaction | Jul 26, 2013 | Dec 20, 2012 |
| 4 | Insider transaction | Jul 26, 2013 | Dec 20, 2012 |
| 4 | Insider transaction | Jul 26, 2013 | Jul 24, 2013 |
| 4 | Insider transaction | Jul 26, 2013 | Jul 24, 2013 |
| 4 | Insider transaction | May 31, 2013 | May 29, 2013 |
| 4 | Insider transaction | Mar 7, 2013 | Mar 6, 2013 |
| 4 | Insider transaction | Mar 5, 2013 | Mar 1, 2013 |
| 4 | Insider transaction | Mar 1, 2013 | Mar 1, 2013 |
| 4 | Insider transaction | Nov 8, 2012 | Nov 7, 2012 |
| 4 | Insider transaction | Oct 25, 2012 | Jul 27, 2011 |
| 4 | Insider transaction | Oct 25, 2012 | Jul 27, 2011 |
| 4 | Insider transaction | Oct 25, 2012 | Jul 27, 2011 |
| 4 | Insider transaction | Oct 25, 2012 | Jul 27, 2011 |
| 4 | Insider transaction | Feb 3, 2012 | Feb 1, 2012 |
| 3 | Initial insider ownership | Feb 3, 2012 | Feb 1, 2012 |
| 4 | Insider transaction | Feb 3, 2012 | Feb 1, 2012 |
| 4 | Insider transaction | Feb 3, 2012 | Feb 1, 2012 |
| 4 | Insider transaction | Feb 3, 2012 | Feb 1, 2012 |
| 3 | Initial insider ownership | Feb 3, 2012 | Jul 22, 1987 |
| 4 | Insider transaction | Dec 15, 2011 | Dec 14, 2011 |
| 4 | Insider transaction | Dec 13, 2011 | Dec 9, 2011 |
| 4 | Insider transaction | Dec 6, 2011 | Dec 2, 2011 |
| 4 | Insider transaction | Dec 1, 2011 | Nov 29, 2011 |
| 4 | Insider transaction | Nov 22, 2011 | Nov 18, 2011 |
| 4 | Insider transaction | Nov 18, 2011 | Nov 16, 2011 |
| 4 | Insider transaction | Nov 15, 2011 | Nov 11, 2011 |
| 4 | Insider transaction | Nov 9, 2011 | Nov 7, 2011 |
| 4 | Insider transaction | Nov 3, 2011 | Nov 1, 2011 |
| 4 | Insider transaction | Jul 18, 2011 | Apr 30, 2003 |
| 4 | Insider transaction | Jul 18, 2011 | May 9, 2007 |
| 4 | Insider transaction | Jun 1, 2011 | May 31, 2011 |
| 4 | Insider transaction | Mar 16, 2011 | Mar 16, 2011 |
| 4 | Insider transaction | Mar 3, 2011 | Mar 1, 2011 |
| 4 | Insider transaction | Mar 2, 2011 | Mar 2, 2011 |
| 4 | Insider transaction | Feb 24, 2011 | Feb 22, 2011 |
| 4 | Insider transaction | Feb 18, 2011 | Feb 17, 2011 |
| 4 | Insider transaction | Feb 16, 2011 | Feb 16, 2011 |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Household Audio & Video Equipment (SIC 3651)
- Listed as
- KOSS (Nasdaq)
- Fiscal year ends
- June 30
- Incorporated in
- DE
- Headquarters
- Milwaukee, WI
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 56701
Other Household Audio & Video Equipment companies
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.