KOSS's three largest insider shareholders as of September 17, 2026 are Michael J Koss (President And Ceo, 2.70Mn shares), John C Jr Koss (Vice President Sales, 196.03K shares), Michael J Jr Koss (Vp Marketing Product, 26.00K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Michael J Koss | President And Ceo | 0 | 2,696,634 | 2,696,634 | 91.7% | 03 Jun, 2022 |
| 2 | John C Jr Koss | Vice President Sales | 196,028 | 0 | 196,028 | 6.7% | 17 Jun, 2025 |
| 3 | Michael J Jr Koss | Vp Marketing Product | 26,000 | 0 | 26,000 | 0.9% | 17 Jun, 2025 |
| 4 | William Jesse Sweasy | Director | 20,000 | 0 | 20,000 | 0.7% | 03 Jun, 2022 |
| 5 | Lenore Lillie | Vp Operations | 2,500 | 0 | 2,500 | 0.1% | 04 Dec, 2025 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 06 May, 2026 | Kim M. Schulte | Chief Financial Officer | Acquired A | 50,000 | $0.00 | $0 | 50,000 | Direct |
| 06 May, 2026 | Michael J Jr Koss | Executive Vice President | Acquired A | 100,000 | $0.00 | $0 | 100,000 | Direct |
| 17 Feb, 2026 | Michael J Koss | President And Ceo | Disposed J | 12,000 | $0.00 | $0 | 0 | Indirect |
| 02 Dec, 2025 | Lenore Lillie | Director | Acquired P | 2,500 | $4.96 | $12.40K | 2,500 | Direct |
| 10 Jun, 2025 | John C Jr Koss | Vice President Sales | Acquired M | 25,000 | $1.90 | $47.50K | 221,028 | Direct |
| 12 Jun, 2025 | Michael J Jr Koss | Vp Marketing Product | Acquired M | 6,000 | $1.90 | $11.40K | 32,000 | Direct |
| 12 Jun, 2025 | Michael J Jr Koss | Vp Marketing Product | Disposed S | 6,000 | $4.91 | $29.46K | 26,000 | Direct |
| 10 Jun, 2025 | John C Jr Koss | Vice President Sales | Disposed S | 25,000 | $5.80 | $145.00K | 196,028 | Direct |
| 13 Jun, 2025 | Michael J Jr Koss | Vp Marketing Product | Acquired M | 24,643 | $1.90 | $46.82K | 50,643 | Direct |
| 11 Jun, 2025 | John C Jr Koss | Vice President Sales | Acquired M | 23,500 | $1.90 | $44.65K | 219,528 | Direct |
| 11 Jun, 2025 | John C Jr Koss | Vice President Sales | Disposed S | 23,500 | $5.65 | $132.78K | 196,028 | Direct |
| 13 Jun, 2025 | Michael J Jr Koss | Vp Marketing Product | Disposed S | 24,643 | $4.78 | $117.79K | 26,000 | Direct |
| 12 Jun, 2025 | John C Jr Koss | Vice President Sales | Acquired M | 1,500 | $1.90 | $2.85K | 197,528 | Direct |
| 12 Jun, 2025 | John C Jr Koss | Vice President Sales | Disposed S | 1,500 | $5.02 | $7.53K | 196,028 | Direct |
| 12 Jun, 2025 | Michael J Jr Koss | Vp Marketing Product | Disposed M | 6,000 | $0.00 | $0 | 59,000 | Direct |
| 13 Jun, 2025 | Michael J Jr Koss | Vp Marketing Product | Disposed M | 24,643 | $0.00 | $0 | 34,357 | Direct |
| 10 Jun, 2025 | John C Jr Koss | Vice President Sales | Disposed M | 25,000 | $0.00 | $0 | 25,000 | Direct |
| 11 Jun, 2025 | John C Jr Koss | Vice President Sales | Disposed M | 23,500 | $0.00 | $0 | 1,500 | Direct |
| 12 Jun, 2025 | John C Jr Koss | Vice President Sales | Disposed M | 1,500 | $0.00 | $0 | 0 | Direct |
| 12 Dec, 2024 | John C Jr Koss | Vice President Sales | Acquired M | 25,000 | $1.90 | $47.50K | 221,028 | Direct |