JOHN C. KOSS JR SEC EDGAR Filings (CIK 0001217521)

SEC EDGAR filings, ownership reports, and insider transactions for JOHN C. KOSS JR.

Business address
C/O Koss Corporation, 4129 N Port Washington Road, Milwaukee, WI, 53212
Top holdings (ownership)
KOSS
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JOHN C. KOSS JR has filed 40 SEC EDGAR filings since 24 Apr 2003

Latest Filings

Recent SEC filings for JOHN C. KOSS JR including 4, SC 13D/A, SC 13D.

Form type Document Filing Description Filing date Reporting date File number(s)
4 Open 4 document View SEC filing for 4 4 17 Jun 2025 10 Jun 2025 000-03295
4 Open 4 document View SEC filing for 4 4 16 Dec 2024 12 Dec 2024 000-03295
4 Open 4 document View SEC filing for 4 4 21 May 2024 20 May 2024 000-03295
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A 03 Jun 2022
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 03 Jun 2022 23 Mar 2022 000-03295
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A 08 Sep 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 02 Sep 2021 31 Aug 2021 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 31 Aug 2021 27 Aug 2021 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 26 Aug 2021 24 Aug 2021 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 16 Jun 2021 14 Jun 2021 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 10 Jun 2021 08 Jun 2021 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 03 Jun 2021 01 Jun 2021 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 01 Jun 2021 28 May 2021 000-03295
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A 16 Mar 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 12 Mar 2021 10 Mar 2021 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 26 Feb 2021 25 Feb 2021 000-03295
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A 10 Feb 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 05 Feb 2021 03 Feb 2021 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 03 Feb 2021 01 Feb 2021 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 23 Jul 2020 22 Jul 2020 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 25 Jul 2019 24 Jul 2019 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 27 Jul 2018 25 Jul 2018 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 27 Jul 2017 26 Jul 2017 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 28 Jul 2016 27 Jul 2016 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 30 Jul 2015 29 Jul 2015 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 25 Jul 2014 23 Jul 2014 000-03295
SC 13D Open SC 13D document View SEC filing for SC 13D 15 Oct 2013
4 Open 4 document View SEC filing for 4 FORM 4 26 Jul 2013 20 Dec 2012 000-03295
4 Open 4 document View SEC filing for 4 FORM 4 25 Oct 2012 27 Jul 2011 000-03295
4 Open 4 document View SEC filing for 4 7/15/2011 FORM 4 18 Jul 2011 09 May 2007 000-03295

About this filer

JOHN C. KOSS JR files with the SEC under CIK 0001217521. This page aggregates EDGAR filings and related ownership activity.

See reporting owner transactions.

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.
How often is this page updated?
Updates follow new EDGAR submissions and periodic data refreshes.

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