KOSS CORP — Investor Relations & Filings
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 |
|---|---|---|---|
| 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 | |
| 4 Filing | 2025-12-04 | English | |
| 10-Q | 2025-10-30 | English | |
| 8-K | 2025-10-30 | English |
| ID | Filing | Released | Lang | Actions | |
|---|---|---|---|---|---|
|
2026
3 filings
| |||||
| 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
12 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 | ||
| 9090312 | 4 | 2025-06-17 | English | ||
| 9090313 | 4 | 2025-06-17 | English | ||
| 9090314 | 10-Q | 2025-05-08 | English | ||
Market data
Market data not available
Price history
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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 |
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)"
Report missing filing
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