Koss Corp
KOSS- Exchange
- Nasdaq
- Industry
- Household Audio & Video Equipment
- SEC CIK
- 0000056701
No open-market purchases or sales by Koss Corp insiders were filed in the last 90 days; 23 institutions reported holding it in 13F filings for Q2 2026, worth $2.00M in total; no superinvestor holds it.
Key figures
- Insider buysOpen market, last 90 days
- 0
- Insider sellsOpen market, last 90 days
- 0
- 13F holdersQ2 2026, 0 vs. previous quarter
- 23
- 13F valueReported value at the end of Q2 2026
- $2.00M
- Superinvestors holdingAt the end of Q2 2026
- 0
Price chart
Superinvestors holding KOSS, Q2 2026
No superinvestor reported holding KOSS at the end of Q2 2026.
Latest insider trades
Open-market purchases and sales by Koss Corp insiders from Form 4, newest first.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Dec 4, 2025 (view filing) | Dec 2 | 2 days | Lillie LenoreDirector | PPurchase | +2.50K | $4.96 | +$12.4K | New position2.50K after | |
| Jun 17, 2025 (view filing) | Jun 10-12 | 7 daysLate | Koss John C JrVice President - Sales | SSale | −50.0K | $5.71 | −$285.3K | −20.3%196.0K after | 3 lots |
| Jun 17, 2025 (view filing) | Jun 12-13 | 5 daysLate | Koss Michael J JrVP - Marketing & Product | SSale | −30.6K | $4.81 | −$147.3K | −54.1%26.0K after | 2 lots |
| Dec 16, 2024 (view filing) | Dec 12 | 4 days | Koss John C JrVice President - Sales | SSale | −25.0K | $7.39 | −$184.8K | −11.3%196.0K after | |
| May 21, 2024 (view filing) | May 20 | 1 day | Koss John C JrVice President - Sales | SSale | −25.0K | $5.25 | −$131.3K | −11.3%196.0K after | |
| Jun 3, 2022 (view filing) | Jun 2 | 1 day | Sweasy William JesseDirector | PPurchase | +2.85K | $7.30 | +$20.8K | +16.6%20.0K after | |
| Jun 2, 2022 (view filing) | Jun 1 | 1 day | Sweasy William JesseDirector | PPurchase | +17.2K | $6.96 | +$119.4K | New position17.2K after | |
| Nov 2, 2021 (view filing) | Nov 2 | Same day | Smith David DonnanChief Financial Officer | SSale | −10.0K | $15.54 | −$155.4K | −100.0%0 after | |
| Sep 17, 2021 (view filing) | Sep 15 | 2 days | Koss Michael J JrVP - Marketing & Product | SSale | −24.1K | $17.74 | −$427.3K | −48.1%26.0K after | |
| Sep 3, 2021 (view filing) | Aug 26 | 8 daysLate | Koss Michael JPresident and CEO | SSale | −8.50K | $18.33 | −$155.8K | −1.1%774.9K after |
Top 10 13F holders, Q2 2026
The largest institutional positions in Koss Corp at the end of Q2 2026; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Vanguard Capital Management LLC | 189,607 | $760.3K | 0.00% | 00.0% | Unchanged |
| BlackRock, Inc. | 94,977 | $380.9K | 0.00% | +5,376+6.0% | Added |
| Geode Capital Management, LLC | 59,491 | $238.6K | 0.00% | +3,578+6.4% | Added |
| Citadel Advisors LLC | 33,058 | $132.6K | 0.00% | +33,058 | New |
| Vanguard Fiduciary Trust Co | 30,740 | $123.3K | 0.00% | −594−1.9% | Reduced |
| Dimensional Fund Advisors LP | 24,433 | $98.0K | 0.00% | +2,822+13.1% | Added |
| State Street Corp | 17,974 | $72.1K | 0.00% | 00.0% | Unchanged |
| James Investment Research Inc | 15,475 | $62.1K | 0.01% | 00.0% | Unchanged |
| GWM Advisors LLC | 15,475 | $62.1K | 0.00% | 00.0% | Unchanged |
| Northern Trust Corp | 10,287 | $41.3K | 0.00% | −3,998−28.0% | Reduced |