Based on data from the past 90 days ending January 10, 2026, Koss's three largest insider shareholders are President And Ceo Michael J Koss (786.91K shares), Vice President Sales John C Jr Koss (196.03K shares), Vp Marketing & Product Michael J Jr Koss (26.00K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Michael J Koss | President And Ceo | 786,907 | 02 Sep, 2021 |
| John C Jr Koss | Vice President Sales | 196,028 | 17 Jun, 2025 |
| Michael J Jr Koss | Vp Marketing & Product | 26,000 | 17 Jun, 2025 |
| William Jesse Sweasy | 20,000 | 03 Jun, 2022 | |
| Lenore Lillie | 2,500 | 04 Dec, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 02 Dec, 2025 | Lenore Lillie | Common Stock | A | 2,500 | $4.96 | 2,500 | D | P |
| 13 Jun, 2025 | Michael J Jr Koss | Common Stock | D | 24,643 | $4.78 | 26,000 | D | S |
| 13 Jun, 2025 | Michael J Jr Koss | - | - | 50,643 | D | |||
| 13 Jun, 2025 | Michael J Jr Koss | - | - | 26,000 | D | |||
| 13 Jun, 2025 | Michael J Jr Koss | Common Stock | A | 24,643 | $1.90 | 50,643 | D | M |
| 12 Jun, 2025 | John C Jr Koss | - | - | 196,028 | D | |||
| 12 Jun, 2025 | John C Jr Koss | Common Stock | A | 1,500 | $1.90 | 197,528 | D | M |
| 12 Jun, 2025 | John C Jr Koss | - | - | 197,528 | D | |||
| 12 Jun, 2025 | John C Jr Koss | Common Stock | D | 1,500 | $5.02 | 196,028 | D | S |
| 12 Jun, 2025 | Michael J Jr Koss | - | - | 32,000 | D | |||
| 12 Jun, 2025 | Michael J Jr Koss | Common Stock | A | 6,000 | $1.90 | 32,000 | D | M |
| 12 Jun, 2025 | Michael J Jr Koss | - | - | 26,000 | D | |||
| 12 Jun, 2025 | Michael J Jr Koss | Common Stock | D | 6,000 | $4.91 | 26,000 | D | S |
| 11 Jun, 2025 | John C Jr Koss | - | - | 219,528 | D | |||
| 11 Jun, 2025 | John C Jr Koss | Common Stock | D | 23,500 | $5.65 | 196,028 | D | S |
| 11 Jun, 2025 | John C Jr Koss | - | - | 196,028 | D | |||
| 11 Jun, 2025 | John C Jr Koss | Common Stock | A | 23,500 | $1.90 | 219,528 | D | M |
| 10 Jun, 2025 | John C Jr Koss | - | - | 196,028 | D | |||
| 10 Jun, 2025 | John C Jr Koss | Common Stock | D | 25,000 | $5.80 | 196,028 | D | S |
| 10 Jun, 2025 | John C Jr Koss | Common Stock | A | 25,000 | $1.90 | 221,028 | D | M |