KOSS CORP — Investor Relations & Filings
Filings indexed
699
across all filing types
Latest filing
2026-05-08
Regulatory Filings
Country
US
United States of America
Listing
US
KOSS
Koss Corporation designs, manufactures, and markets high-fidelity stereo headphones and related audio accessories. The company is credited with inventing the world's first SP/3 Stereophone in 1958, a foundational development in personal audio. Its product portfolio includes a comprehensive line of headphones, such as wireless, over-ear, on-ear, and in-ear models, alongside computer and telecommunications headsets. Notable product lines include the Porta Pro and KSC75. The company also offers innovative solutions like the Utility Series, which features a detachable cord system for versatile connectivity with USB-C, Bluetooth, and 3.5mm devices.
Recent filings
| Filing | Released | Lang | Actions |
|---|---|---|---|
| SD - KOSS CORP (0000056701) (Filer) | 2026-05-08 | English | |
| 10-Q | 2026-05-08 | English | |
| 8-K - KOSS CORP (0000056701) (Filer) | 2026-05-07 | English | |
| 4 - KOSS CORP (0000056701) (Filer) | 2026-02-17 | English | |
| 10-Q - KOSS CORP (0000056701) (Filer) | 2026-01-30 | English | |
| 8-K Filing | 2026-01-29 | English |
Browse filings by year
33 years- 2026 6 filings
- 2025 17 filings
- 2024 16 filings
- 2023 17 filings
- 2022 21 filings
- 2021 67 filings
- 2020 25 filings
- 2019 24 filings
- 2018 22 filings
- 2017 21 filings
- 2016 21 filings
- 2015 24 filings
- 2014 30 filings
- 2013 31 filings
- 2012 22 filings
- 2011 38 filings
- 2010 44 filings
- 2009 26 filings
- 2008 22 filings
- 2007 19 filings
- 2006 49 filings
- 2005 15 filings
- 2004 34 filings
- 2003 22 filings
- 2002 11 filings
- 2001 10 filings
- 2000 8 filings
- 1999 8 filings
- 1998 9 filings
- 1997 8 filings
- 1996 6 filings
- 1995 5 filings
- 1994 1 filing
| ID | Filing | Released | Lang | Actions | |
|---|---|---|---|---|---|
|
2026
6 filings
| |||||
| 44383074 | SD - KOSS CORP (0000056701) (Filer) | 2026-05-08 | English | ||
| 45927123 | 10-Q | 2026-05-08 | English | ||
| 43596352 | 8-K - KOSS CORP (0000056701) (Filer) | 2026-05-07 | English | ||
| 32876915 | 4 - KOSS CORP (0000056701) (Filer) | 2026-02-17 | English | ||
| 32876919 | 10-Q - KOSS CORP (0000056701) (Filer) | 2026-01-30 | English | ||
| 15938071 | 8-K Filing | 2026-01-29 | English | ||
|
2025
9 filings
| |||||
| 15938072 | 4 Filing | 2025-12-04 | English | ||
| 9090310 | 10-Q | 2025-10-30 | English | ||
| 9090306 | 8-K | 2025-10-30 | English | ||
| 9090304 | 8-K | 2025-10-20 | English | ||
| 9090305 | FY25 KOSS ANNUAL REPORT TO SHAREHOLDERS | 2025-08-28 | English | ||
| 9090307 | DEFA14A | 2025-08-28 | English | ||
| 9090308 | DEF 14A | 2025-08-28 | English | ||
| 9090309 | 10-K | 2025-08-28 | English | ||
| 9090311 | 8-K | 2025-08-28 | English | ||
Market data
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KOSS CORP via the API
Pull this company's filings, identifiers, and metadata as JSON or Markdown. Authenticate with your API key, then query by company ID, ISIN, or LEI. Full schema documented in the OpenAPI spec.
Endpoints
| GET | /api/companies/34583/ | Company identity, sector, listing, identifiers |
| GET | /api/filings/?company=34583 | Paginated list of all filings (filterable by type, date, language) |
| GET | /api/filings/{id}/ | Single filing — metadata, document URL, processing status |
| GET | /api/filings/{id}/markdown/ | Filing content as Markdown (PDF → text/tables/figures) |
| GET | /api/isins/?company=34583 | All ISINs registered to this company |
| GET | /api/filing-types/ | Reference: every filing-type code + category |
Full reference: API reference · OpenAPI schema
cURL
$ curl https://api.financialreports.eu/api/filings/?company=34583 \ -H "x-api-key: $FR_API_KEY" \ -H "Accept: application/json"
Python
import requests r = requests.get( "https://api.financialreports.eu/api/filings/", params={"company": 34583}, headers={"x-api-key": API_KEY}, ) filings = r.json()["results"]
MCP server
// MCP server URL https://mcp.financialfilings.com/mcp // Once connected, the LLM can query this company directly: "Pull the latest 5 filings for KOSS CORP (id: 34583)"
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