SEC Form 4 · Updated Daily
KOSS
— KOSS CORPORATION OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| Koss Nancy L | 10%+ Owner | 857,949 | 2012-12-21 | — |
| Nancy Koss 2012 Trust, Dated 12/20/12 | 10%+ Owner | 832,949 | 2021-02-01 | S |
| KOSS JOHN C JR | 10%+ Owner · Officer | 221,028 | 2025-06-10 | M |
| Koss Michael J Jr | Officer | 50,643 | 2025-06-13 | M |
| STOLLENWERK JOHN J | Reporting Owner | 32,562 | 2011-05-31 | P |
| Sweasy William Jesse | Director | 20,000 | 2022-06-02 | P |
| Nixon Theodore | Director | 10,000 | 2021-05-28 | M |
| Smith David Donnan | Officer | 10,000 | 2021-11-02 | M |
| Leveen Steven A | Director | 5,000 | 2021-02-01 | S |
| KOSS JOHN C | Director | 4,000 | 2013-05-29 | P |
| Doerr Thomas L. | Director | 3,333 | 2021-05-18 | M |
| LILLIE LENORE | Officer | 2,500 | 2025-12-02 | P |
| Schulte Kim M. | Officer | 0 | 2022-02-28 | — |
| KOSS MICHAEL J | 10%+ Owner · Director · Officer | 0 | 2026-02-17 | J |
| Koss Family Trust, Dated 9/11/12 | 10%+ Owner | 0 | 2022-03-23 | Z |
| KFT Corp | 10%+ Owner | 0 | 2022-03-23 | Z |
| Mattson Lawrence S. | Director | 0 | 2012-02-01 | — |
| SACHDEVA SUJATA | Officer | 0 | 2006-06-06 | S |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-05-06 | Koss Michael J Jr | Grant / award (derivative) | 100,000 | $0.00 | 100,000 |
| 2026-05-06 | Schulte Kim M. | Grant / award (derivative) | 50,000 | $0.00 | 50,000 |
| 2026-02-17 | KOSS MICHAEL J | J | 12,000 | $0.00 | 0 |
| 2025-12-02 | LILLIE LENORE | Open-market buy | 2,500 | $4.96 | 2,500 |
| 2025-06-13 | Koss Michael J Jr | Option exercise (derivative) | 24,643 | $0.00 | 34,357 |
| 2025-06-13 | Koss Michael J Jr | Open-market sale | 24,643 | $4.78 | 26,000 |
| 2025-06-13 | Koss Michael J Jr | Option exercise | 24,643 | $1.90 | 50,643 |
| 2025-06-12 | Koss Michael J Jr | Option exercise (derivative) | 6,000 | $0.00 | 59,000 |
| 2025-06-12 | Koss Michael J Jr | Open-market sale | 6,000 | $4.91 | 26,000 |
| 2025-06-12 | Koss Michael J Jr | Option exercise | 6,000 | $1.90 | 32,000 |
| 2025-06-12 | KOSS JOHN C JR | Option exercise (derivative) | 1,500 | $0.00 | 0 |
| 2025-06-12 | KOSS JOHN C JR | Open-market sale | 1,500 | $5.02 | 196,028 |
| 2025-06-12 | KOSS JOHN C JR | Option exercise | 1,500 | $1.90 | 197,528 |
| 2025-06-11 | KOSS JOHN C JR | Option exercise (derivative) | 23,500 | $0.00 | 1,500 |
| 2025-06-11 | KOSS JOHN C JR | Open-market sale | 23,500 | $5.65 | 196,028 |
| 2025-06-11 | KOSS JOHN C JR | Option exercise | 23,500 | $1.90 | 219,528 |
| 2025-06-10 | KOSS JOHN C JR | Option exercise (derivative) | 25,000 | $0.00 | 25,000 |
| 2025-06-10 | KOSS JOHN C JR | Open-market sale | 25,000 | $5.80 | 196,028 |
| 2025-06-10 | KOSS JOHN C JR | Option exercise | 25,000 | $1.90 | 221,028 |
| 2024-12-12 | KOSS JOHN C JR | Option exercise (derivative) | 25,000 | $0.00 | 50,000 |
| 2024-12-12 | KOSS JOHN C JR | Open-market sale | 25,000 | $7.39 | 196,028 |
| 2024-12-12 | KOSS JOHN C JR | Option exercise | 25,000 | $1.90 | 221,028 |
| 2024-05-30 | KOSS MICHAEL J | J | 15,000 | $0.00 | 12,000 |
| 2024-05-20 | KOSS JOHN C JR | Option exercise (derivative) | 25,000 | $0.00 | 25,000 |
| 2024-05-20 | KOSS JOHN C JR | Open-market sale | 25,000 | $5.25 | 196,028 |
| 2024-05-20 | KOSS JOHN C JR | Option exercise | 25,000 | $2.17 | 221,028 |
| 2022-06-02 | Sweasy William Jesse | Open-market buy | 2,847 | $7.30 | 20,000 |
| 2022-06-01 | Sweasy William Jesse | Open-market buy | 17,153 | $6.96 | 17,153 |
| 2022-03-23 | KOSS JOHN C JR | Z | 1,000,885 | $0.00 | 0 |
| 2022-03-23 | KOSS MICHAEL J | Z | 2,696,634 | $0.00 | 2,696,634 |
| 2022-03-23 | KOSS MICHAEL J | Z | 1,000,885 | $0.00 | 0 |
| 2022-03-23 | KFT Corp | Z | 983,800 | $0.00 | 0 |
| 2022-03-23 | Koss Family Trust, Dated 9/11/12 | Z | 1,000,885 | $0.00 | 0 |
| 2022-02-28 | Schulte Kim M. | — | — | — | 0 |
| 2021-11-02 | Smith David Donnan | Option exercise (derivative) | 10,000 | $0.00 | 20,000 |
| 2021-11-02 | Smith David Donnan | Open-market sale | 10,000 | $15.54 | 0 |
| 2021-11-02 | Smith David Donnan | Option exercise | 10,000 | $2.63 | 10,000 |
| 2021-09-15 | Koss Michael J Jr | Option exercise (derivative) | 9,089 | $0.00 | 20,911 |
| 2021-09-15 | Koss Michael J Jr | Option exercise (derivative) | 15,000 | $0.00 | 15,000 |
| 2021-09-15 | Koss Michael J Jr | Open-market sale | 24,089 | $17.74 | 26,000 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.