Figures computed from official regulatory filings — .
Ownershipinsiders 44.1% · institutions 5.34% · short 4.7% of float
In USD · as of Oct 5, 2026
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Koss Corporation, together with its subsidiaries, engages in the design, manufacture, and sale of stereo headphones and related accessories in the United States, Sweden, the Czech Republic, Korea, Malaysia, Australia, Japan, the United Kingdom, and internationally. The company offers high-fidelity headphones, wireless bluetooth headphones, wireless bluetooth speakers, computer headsets, telecommunications headsets, and active noise canceling headphones. It sells its products through distributors, international distributors, audio specialty stores, the internet, national retailers, grocery stores, electronics retailers, and prisons under the Koss brand name, as well as private label. The company also sells its products to distributors for resale to school systems; and directly to other manufacturers. Koss Corporation was founded in 1953 and is based in Milwaukee, Wisconsin.
Market information source · Oct 5, 2026
SEC company identity · Oct 5, 2026
Open-market timeline · full history
127 buys197 sells— close pricebar = usd volume, √ scaleclick a period to filter the table
| Insider | Type | Value · USD | Signals | Details |
|---|---|---|---|---|
| Koss Michael J Jr | AwardD (derivative) | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Schulte Kim M. | AwardD (derivative) | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| KOSS MICHAEL Jtrack record | Other | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| LILLIE LENORE | Buy | $12.4K | conv 80First in 12mo | SEC |
| KOSS JOHN C JR | ExerciseD (derivative) | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| KOSS JOHN C JR | Exercise | $47.5K | SEC |
| KOSS JOHN C JR | Exercise | $2.9K | SEC |
| Koss Michael J Jr | Sell | $29.5K | SEC |
| KOSS JOHN C JR | Sell | $132.8K | SEC |
| KOSS JOHN C JR | Sell | $7.5K | SEC |
| KOSS JOHN C JR | Exercise | $44.7K | SEC |
| KOSS JOHN C JR | ExerciseD (derivative) | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Koss Michael J Jr | ExerciseD (derivative) | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Koss Michael J Jr | ExerciseD (derivative) | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Koss Michael J Jr | Exercise | $46.8K | SEC |
| Koss Michael J Jr | Sell | $117.8K | SEC |
| KOSS JOHN C JR | ExerciseD (derivative) | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| KOSS JOHN C JR | Sell | $145K | SEC |
| Koss Michael J Jr | Exercise | $11.4K | SEC |
| KOSS JOHN C JR | Exercise | $47.5K | SEC |
| KOSS JOHN C JR | ExerciseD (derivative) | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| KOSS JOHN C JR | Sell | $184.8K | SEC |
| KOSS MICHAEL Jtrack record | Other | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| KOSS JOHN C JR | ExerciseD (derivative) | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| KOSS JOHN C JR | Exercise | $54.3K | SEC |