EntityWire/Wisconsin business entity search →/KOSS CORPORATION
Employer with a benefit plan
KOSS CORPORATION
KOSS CORPORATION's Employer Identification Number (EIN) is 39-1168275.
At a glance
- EIN
- 39-1168275 · 391168275
- Legal name
- KOSS CORPORATION
- Address on file
- 4129 NORTH PORT WASHINGTON ROAD, MILWAUKEE, WI 532121052
- Records show
- SEC filer; employer with a benefit plan; state registration
- Latest record
- 2026-09-05
State registration
Texas Comptroller active franchise taxpayers file · records as of 2026-09-05
- Texas registration
- Active · Foreign profit corporation
- Source: Texas Comptroller · as of 2026-09-05
- Texas document number
- 13911682758
- Source: Texas Comptroller · as of 2026-09-05
SEC records
SEC EDGAR company filings · records as of 2026-08-28
- SEC CIK
- 0000056701
- Source: SEC · as of 2026-08-28
- Industry (SIC)
- Household Audio & Video Equipment (3651)
- Source: SEC · as of 2026-08-28
- State of incorporation
- DE
- Source: SEC · as of 2026-08-28
- Ticker
- KOSS
- Source: SEC · as of 2026-08-28
- Latest SEC filing
- ARS 2026-08-28
- Source: SEC · as of 2026-08-28
Benefit plans
DOL Form 5500 filings (EFAST2) · DOL Form 5500-SF filings (EFAST2) · records as of 2026-01-05
- Benefit plan 1, 2024 filing
- KOSS CORPORATION EMPLOYEE STOCK OWNERSHIP PLAN
- Source: DOL 5500 · as of 2026-01-05
- Participants (start of year)
- 35
- Source: DOL 5500 · as of 2026-01-05
- Plan features
- Leveraged ESOP; Non-leveraged ESOP
- Source: DOL 5500 · as of 2026-01-05
- Plan type
- Single-employer plan
- Source: DOL 5500 · as of 2026-01-05
- Business code (NAICS)
- 334310
- Source: DOL 5500 · as of 2026-01-05
- Benefit plan 2, 2024 filing
- KOSS CORPORATION RETIREMENT SAVINGS 401(K) PLAN
- Source: DOL 5500-SF · as of 2025-11-24
- Participants (start of year)
- 37
- Source: DOL 5500-SF · as of 2025-11-24
What this record is
Public filings that carry this EIN (DOL Form 5500 filings (EFAST2), DOL Form 5500-SF filings (EFAST2), SEC EDGAR company filings and Texas Comptroller active franchise taxpayers file), shown as filed. Nothing is scraped from the IRS, and a public-record match is not IRS TIN validation.
What it is not
Registry status, formation date, and registered agent come from the Wisconsin Department of Financial Institutions, Division of Corporate and Consumer Services (Corporation Bureau); see the Wisconsin business entity search.
If something is wrong
A name, address, or classification here is what the source published. To correct the source, file with it; to have this page removed, see corrections and removal.
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