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John C Koss JR
Insider
First SEC filing: July 25, 2019 · Latest: July 25, 2019
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net: $0
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| June 12, 2025 | KOSS | M | 1,500 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| June 12, 2025 | KOSS | S | 1,500 | $5.02 | $7,530 | 196,028 Direct | -0.76% | Disposed | -23.1% (price as of 2026-10-02) |
| June 12, 2025 | KOSS | M | 1,500 | $1.90 | $2,850 | 197,528 Direct | +0.77% | Acquired | 103.2% (price as of 2026-10-02) |
| June 11, 2025 | KOSS | M | 23,500 | · | · | 1,500 Direct | -94.00% | Disposed | (price as of 2026-10-02) |
| June 11, 2025 | KOSS | S | 23,500 | $5.65 | $132,775 | 196,028 Direct | -10.70% | Disposed | -31.7% (price as of 2026-10-02) |
| June 11, 2025 | KOSS | M | 23,500 | $1.90 | $44,650 | 219,528 Direct | +11.99% | Acquired | 103.2% (price as of 2026-10-02) |
| June 10, 2025 | KOSS | M | 25,000 | · | · | 25,000 Direct | -50.00% | Disposed | (price as of 2026-10-02) |
| June 10, 2025 | KOSS | S | 25,000 | $5.80 | $145,000 | 196,028 Direct | -11.31% | Disposed | -33.4% (price as of 2026-10-02) |
| June 10, 2025 | KOSS | M | 25,000 | $1.90 | $47,500 | 221,028 Direct | +12.75% | Acquired | 103.2% (price as of 2026-10-02) |
| Dec. 12, 2024 | KOSS | M | 25,000 | · | · | 50,000 Direct | -33.33% | Disposed | (price as of 2026-10-02) |
| Dec. 12, 2024 | KOSS | S | 25,000 | $7.39 | $184,750 | 196,028 Direct | -11.31% | Disposed | -47.8% (price as of 2026-10-02) |
| Dec. 12, 2024 | KOSS | M | 25,000 | $1.90 | $47,500 | 221,028 Direct | +12.75% | Acquired | 103.2% (price as of 2026-10-02) |
| May 20, 2024 | KOSS | M | 25,000 | · | · | 25,000 Direct | -50.00% | Disposed | (price as of 2026-10-02) |
| May 20, 2024 | KOSS | S | 25,000 | $5.25 | $131,250 | 196,028 Direct | -11.31% | Disposed | -26.5% (price as of 2026-10-02) |
| May 20, 2024 | KOSS | M | 25,000 | $2.17 | $54,250 | 221,028 Direct | +12.75% | Acquired | 77.9% (price as of 2026-10-02) |
| March 23, 2022 | KOSS | Z | 983,800 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-02) |
| March 23, 2022 | KOSS | Z | 707,949 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-02) |
| March 23, 2022 | KOSS | Z | 1,000,885 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-02) |
| Aug. 31, 2021 | KOSS | M | 10,000 | · | · | 75,000 Direct | -11.76% | Disposed | (price as of 2026-10-02) |
| Aug. 31, 2021 | KOSS | S | 10,000 | $18.38 | $183,800 | 151,028 Direct | -6.21% | Disposed | -79.0% (price as of 2026-10-02) |
| Aug. 31, 2021 | KOSS | M | 10,000 | $1.90 | $19,000 | 161,028 Direct | +6.62% | Acquired | 103.2% (price as of 2026-10-02) |
| Aug. 30, 2021 | KOSS | M | 5,000 | · | · | 85,000 Direct | -5.56% | Disposed | (price as of 2026-10-02) |
| Aug. 30, 2021 | KOSS | S | 5,000 | $18.26 | $91,300 | 151,028 Direct | -3.20% | Disposed | -78.9% (price as of 2026-10-02) |
| Aug. 30, 2021 | KOSS | M | 5,000 | $1.90 | $9,500 | 156,028 Direct | +3.31% | Acquired | 103.2% (price as of 2026-10-02) |
| Aug. 27, 2021 | KOSS | M | 10,000 | · | · | 90,000 Direct | -10.00% | Disposed | (price as of 2026-10-02) |
| Aug. 27, 2021 | KOSS | S | 10,000 | $18.06 | $180,600 | 151,028 Direct | -6.21% | Disposed | -78.6% (price as of 2026-10-02) |
| Aug. 27, 2021 | KOSS | M | 10,000 | $1.90 | $19,000 | 161,028 Direct | +6.62% | Acquired | 103.2% (price as of 2026-10-02) |
| Aug. 24, 2021 | KOSS | M | 25,000 | · | · | 50,000 Direct | -33.33% | Disposed | (price as of 2026-10-02) |
| Aug. 24, 2021 | KOSS | M | 25,000 | · | · | 25,000 Direct | -50.00% | Disposed | (price as of 2026-10-02) |
| Aug. 24, 2021 | KOSS | M | 25,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Aug. 24, 2021 | KOSS | S | 25,000 | $20.06 | $501,500 | 151,028 Direct | -14.20% | Disposed | -80.8% (price as of 2026-10-02) |
| Aug. 24, 2021 | KOSS | S | 13,737 | $18.27 | $250,975 | 176,028 Direct | -7.24% | Disposed | -78.9% (price as of 2026-10-02) |
| Aug. 24, 2021 | KOSS | S | 36,263 | $17.40 | $630,976 | 189,765 Direct | -16.04% | Disposed | -77.8% (price as of 2026-10-02) |
| Aug. 24, 2021 | KOSS | M | 25,000 | $2.17 | $54,250 | 226,028 Direct | +12.44% | Acquired | 77.9% (price as of 2026-10-02) |
| Aug. 24, 2021 | KOSS | M | 25,000 | $2.92 | $73,000 | 201,028 Direct | +14.20% | Acquired | 32.2% (price as of 2026-10-02) |
| Aug. 24, 2021 | KOSS | M | 25,000 | $1.95 | $48,750 | 176,028 Direct | +16.55% | Acquired | 97.9% (price as of 2026-10-02) |
| June 15, 2021 | KOSS | S | 5,000 | $24.22 | $121,100 | 151,028 Direct | -3.20% | Disposed | -84.1% (price as of 2026-10-02) |
| June 14, 2021 | KOSS | S | 3,000 | $25.20 | $75,600 | 156,028 Direct | -1.89% | Disposed | -84.7% (price as of 2026-10-02) |
| June 9, 2021 | KOSS | S | 5,000 | $27.00 | $135,000 | 159,028 Direct | -3.05% | Disposed | -85.7% (price as of 2026-10-02) |
| June 8, 2021 | KOSS | S | 8,133 | $30.00 | $243,990 | 164,028 Direct | -4.72% | Disposed | -87.1% (price as of 2026-10-02) |
| June 3, 2021 | KOSS | S | 5,000 | $35.36 | $176,800 | 172,161 Direct | -2.82% | Disposed | -89.1% (price as of 2026-10-02) |
| June 3, 2021 | KOSS | S | 5,000 | $32.50 | $162,500 | 177,161 Direct | -2.74% | Disposed | -88.1% (price as of 2026-10-02) |
| June 3, 2021 | KOSS | S | 5,000 | $30.00 | $150,000 | 182,161 Direct | -2.67% | Disposed | -87.1% (price as of 2026-10-02) |
| June 3, 2021 | KOSS | S | 5,000 | $31.35 | $156,750 | 187,161 Direct | -2.60% | Disposed | -87.7% (price as of 2026-10-02) |
| June 2, 2021 | KOSS | S | 5,000 | $28.00 | $140,000 | 192,161 Direct | -2.54% | Disposed | -86.2% (price as of 2026-10-02) |
| June 1, 2021 | KOSS | S | 5,000 | $25.00 | $125,000 | 197,161 Direct | -2.47% | Disposed | -84.6% (price as of 2026-10-02) |
| May 28, 2021 | KOSS | S | 10,000 | $23.50 | $235,000 | 202,161 Direct | -4.71% | Disposed | -83.6% (price as of 2026-10-02) |
| March 11, 2021 | KOSS | G | 5,000 | · | · | 212,161 Direct | -2.30% | Disposed | (price as of 2026-10-02) |
| March 10, 2021 | KOSS | S | 4,000 | $36.72 | $146,880 | 217,161 Direct | -1.81% | Disposed | -89.5% (price as of 2026-10-02) |
| March 10, 2021 | KOSS | S | 5,000 | $30.00 | $150,000 | 221,161 Direct | -2.21% | Disposed | -87.1% (price as of 2026-10-02) |
| March 10, 2021 | KOSS | S | 10,000 | $27.95 | $279,500 | 226,161 Direct | -4.23% | Disposed | -86.2% (price as of 2026-10-02) |
| March 10, 2021 | KOSS | S | 10,000 | $25.22 | $252,200 | 236,161 Direct | -4.06% | Disposed | -84.7% (price as of 2026-10-02) |
| Feb. 26, 2021 | KOSS | G | 10,000 | · | · | 246,161 Direct | -3.90% | Disposed | (price as of 2026-10-02) |
| Feb. 25, 2021 | KOSS | S | 40,000 | $27.06 | $1,082,400 | 707,949 Indirect | -5.35% | Disposed | -85.7% (price as of 2026-10-02) |
| Feb. 25, 2021 | KOSS | S | 10,000 | $23.51 | $235,100 | 747,949 Indirect | -1.32% | Disposed | -83.6% (price as of 2026-10-02) |
| Feb. 25, 2021 | KOSS | S | 10,000 | $30.13 | $301,300 | 256,161 Direct | -3.76% | Disposed | -87.2% (price as of 2026-10-02) |
| Feb. 4, 2021 | KOSS | S | 5,000 | $24.00 | $120,000 | 266,161 Direct | -1.84% | Disposed | -83.9% (price as of 2026-10-02) |
| Feb. 3, 2021 | KOSS | S | 10,000 | $25.44 | $254,400 | 271,161 Direct | -3.56% | Disposed | -84.8% (price as of 2026-10-02) |
| Feb. 2, 2021 | KOSS | S | 30,000 | $19.84 | $595,200 | 757,949 Indirect | -3.81% | Disposed | -80.5% (price as of 2026-10-02) |
| Feb. 2, 2021 | KOSS | S | 5,133 | $18.07 | $92,753 | 281,161 Direct | -1.79% | Disposed | -78.6% (price as of 2026-10-02) |
| Feb. 2, 2021 | KOSS | S | 35,000 | $23.56 | $824,600 | 286,294 Direct | -10.89% | Disposed | -83.6% (price as of 2026-10-02) |
| Feb. 1, 2021 | KOSS | M | 25,000 | · | · | 75,000 Direct | -25.00% | Disposed | (price as of 2026-10-02) |
| Feb. 1, 2021 | KOSS | M | 50,000 | · | · | 50,000 Direct | -50.00% | Disposed | (price as of 2026-10-02) |
| Feb. 1, 2021 | KOSS | M | 75,000 | · | · | 25,000 Direct | -75.00% | Disposed | (price as of 2026-10-02) |
| Feb. 1, 2021 | KOSS | M | 100,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Feb. 1, 2021 | KOSS | S | 20,000 | $35.01 | $700,200 | 787,949 Indirect | -2.48% | Disposed | -89.0% (price as of 2026-10-02) |
| Feb. 1, 2021 | KOSS | S | 20,000 | $41.81 | $836,200 | 807,949 Indirect | -2.42% | Disposed | -90.8% (price as of 2026-10-02) |
| Feb. 1, 2021 | KOSS | S | 5,000 | $44.00 | $220,000 | 827,949 Indirect | -0.60% | Disposed | -91.2% (price as of 2026-10-02) |
| Feb. 1, 2021 | KOSS | S | 25,000 | $48.26 | $1,206,500 | 832,949 Indirect | -2.91% | Disposed | -92.0% (price as of 2026-10-02) |
| Feb. 1, 2021 | KOSS | S | 17,779 | $49.47 | $879,527 | 0 Indirect | -100.00% | Disposed | -92.2% (price as of 2026-10-02) |
| Feb. 1, 2021 | KOSS | S | 10,000 | $55.18 | $551,800 | 17,779 Indirect | -36.00% | Disposed | -93.0% (price as of 2026-10-02) |
| Feb. 1, 2021 | KOSS | S | 10,000 | $34.04 | $340,400 | 321,294 Direct | -3.02% | Disposed | -88.7% (price as of 2026-10-02) |
| Feb. 1, 2021 | KOSS | S | 25,000 | $35.06 | $876,500 | 331,294 Direct | -7.02% | Disposed | -89.0% (price as of 2026-10-02) |
| Feb. 1, 2021 | KOSS | S | 43,167 | $36.63 | $1,581,207 | 356,294 Direct | -10.81% | Disposed | -89.5% (price as of 2026-10-02) |
| Feb. 1, 2021 | KOSS | S | 16,000 | $38.26 | $612,160 | 399,461 Direct | -3.85% | Disposed | -89.9% (price as of 2026-10-02) |
| Feb. 1, 2021 | KOSS | S | 47,033 | $39.13 | $1,840,401 | 415,461 Direct | -10.17% | Disposed | -90.1% (price as of 2026-10-02) |
| Feb. 1, 2021 | KOSS | S | 35,283 | $41.11 | $1,450,484 | 462,494 Direct | -7.09% | Disposed | -90.6% (price as of 2026-10-02) |
| Feb. 1, 2021 | KOSS | S | 96,250 | $42.24 | $4,065,600 | 497,777 Direct | -16.20% | Disposed | -90.9% (price as of 2026-10-02) |
| Feb. 1, 2021 | KOSS | S | 12,267 | $45.62 | $559,621 | 594,027 Direct | -2.02% | Disposed | -91.5% (price as of 2026-10-02) |
| Feb. 1, 2021 | KOSS | M | 25,000 | $2.17 | $54,250 | 606,294 Direct | +4.30% | Acquired | 77.9% (price as of 2026-10-02) |
| Feb. 1, 2021 | KOSS | M | 50,000 | $2.92 | $146,000 | 581,294 Direct | +9.41% | Acquired | 32.2% (price as of 2026-10-02) |
| Feb. 1, 2021 | KOSS | M | 75,000 | $1.95 | $146,250 | 531,294 Direct | +16.44% | Acquired | 97.9% (price as of 2026-10-02) |
| Feb. 1, 2021 | KOSS | M | 100,000 | $2.42 | $242,000 | 456,294 Direct | +28.07% | Acquired | 59.5% (price as of 2026-10-02) |
| July 22, 2020 | KOSS | A | 100,000 | · | · | 100,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Jan. 23, 2020 | KOSS | J | 8,000 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-02) |
| Jan. 13, 2020 | KOSS | J | 24,000 | · | · | 8,000 Indirect | -75.00% | Disposed | (price as of 2026-10-02) |
| July 24, 2019 | KOSS | A | 100,000 | $2.17 | $217,000 | 100,000 Direct | · | Acquired | 77.9% (price as of 2026-10-02) |
| July 25, 2018 | KOSS | A | 100,000 | $2.92 | $292,000 | 100,000 Direct | · | Acquired | 32.2% (price as of 2026-10-02) |
| July 26, 2017 | KOSS | A | 100,000 | $1.95 | $195,000 | 100,000 Direct | · | Acquired | 97.9% (price as of 2026-10-02) |
| July 27, 2016 | KOSS | A | 100,000 | $2.42 | $242,000 | 100,000 Direct | · | Acquired | 59.5% (price as of 2026-10-02) |
| July 29, 2015 | KOSS | A | 100,000 | · | · | 100,000 Direct | · | Acquired | (price as of 2026-10-02) |
| July 23, 2014 | KOSS | A | 100,000 | · | · | 100,000 Direct | · | Acquired | (price as of 2026-10-02) |
| July 24, 2013 | KOSS | A | 100,000 | · | · | 100,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Dec. 20, 2012 | KOSS | G | 857,949 | · | · | 857,949 Indirect | · | Acquired | (price as of 2026-10-02) |
| July 25, 2012 | KOSS | A | 100,000 | · | · | 100,000 Direct | · | Acquired | (price as of 2026-10-02) |
| July 27, 2011 | KOSS | A | 100,000 | · | · | 100,000 Direct | · | Acquired | (price as of 2026-10-02) |
| July 14, 2010 | KOSS | A | 100,000 | · | · | 100,000 Direct | · | Acquired | (price as of 2026-10-02) |
| July 15, 2009 | KOSS | A | 100,000 | · | · | 100,000 Direct | · | Acquired | (price as of 2026-10-02) |
| May 8, 2008 | KOSS | A | 60,000 | · | · | 60,000 Direct | · | Acquired | (price as of 2026-10-02) |
| May 9, 2007 | KOSS | A | 40,000 | · | · | 40,000 Direct | · | Acquired | (price as of 2026-10-02) |
Showing latest 100 of 113 transactions
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II) Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| June 12, 2025 | KOSS | Stock Option (Right to Buy) | Common Stock | $1.90 | July 22, 2025 | 1,500 | Disposed |
| June 11, 2025 | KOSS | Stock Option (Right to Buy) | Common Stock | $1.90 | July 22, 2025 | 23,500 | Disposed |
| June 10, 2025 | KOSS | Stock Option (Right to Buy) | Common Stock | $1.90 | July 22, 2025 | 25,000 | Disposed |
| Dec. 12, 2024 | KOSS | Stock Option (Right to Buy) | Common Stock | $1.90 | July 22, 2025 | 25,000 | Disposed |
| May 20, 2024 | KOSS | Stock Option (right to buy) | Common Stock | $2.17 | July 24, 2024 | 25,000 | Disposed |
| Aug. 31, 2021 | KOSS | Stock Option (right to buy) | Common Stock | $1.90 | July 22, 2025 | 10,000 | Disposed |
| Aug. 30, 2021 | KOSS | Stock Option (right to buy) | Common Stock | $1.90 | July 22, 2025 | 5,000 | Disposed |
| Aug. 27, 2021 | KOSS | Stock Option (right to buy) | Common Stock | $1.90 | July 22, 2025 | 10,000 | Disposed |
| Aug. 24, 2021 | KOSS | Stock Option (right to buy) | Common Stock | $2.17 | July 24, 2024 | 25,000 | Disposed |
| Aug. 24, 2021 | KOSS | Stock Option (right to buy) | Common Stock | $2.92 | July 25, 2023 | 25,000 | Disposed |
| Aug. 24, 2021 | KOSS | Stock Option (right to buy) | Common Stock | $1.95 | July 26, 2022 | 25,000 | Disposed |
| Feb. 1, 2021 | KOSS | Stock Option (right to buy) | Common Stock | $2.17 | July 24, 2024 | 25,000 | Disposed |
| Feb. 1, 2021 | KOSS | Stock Option (right to buy) | Common Stock | $2.92 | July 25, 2023 | 50,000 | Disposed |
| Feb. 1, 2021 | KOSS | Stock Option (right to buy) | Common Stock | $1.95 | July 26, 2022 | 75,000 | Disposed |
| Feb. 1, 2021 | KOSS | Stock Option (right to buy) | Common Stock | $2.42 | July 27, 2021 | 100,000 | Disposed |
| July 22, 2020 | KOSS | Stock Options (Right to Buy) | Common Stock | $1.90 | July 22, 2025 | 100,000 | Acquired |
| July 24, 2019 | KOSS | Common Stock | Common Stock | $2.17 | July 24, 2024 | 100,000 | Acquired |
| July 25, 2018 | KOSS | Common Stock | Common Stock | $2.92 | July 25, 2023 | 100,000 | Acquired |
| July 26, 2017 | KOSS | Stock Option (right to buy) | Common Stock | $1.95 | July 26, 2022 | 100,000 | Acquired |
| July 27, 2016 | KOSS | Stock Option (right to buy) | Common Stock | $2.42 | July 27, 2021 | 100,000 | Acquired |
| July 29, 2015 | KOSS | Stock Option (right to buy) | Common Stock | $2.83 | July 29, 2020 | 100,000 | Acquired |
| July 23, 2014 | KOSS | Stock Option (right to buy) | Common Stock | $3.30 | July 23, 2024 | 100,000 | Acquired |
| July 24, 2013 | KOSS | Stock Option (right to buy) | Common Stock | $5.83 | July 24, 2023 | 100,000 | Acquired |
| July 25, 2012 | KOSS | Employee Stock Option (right to buy) | Common Stock | $5.47 | July 25, 2017 | 100,000 | Acquired |
| July 27, 2011 | KOSS | Employee Stock Option (right to buy) | Common Stock | $6.60 | July 27, 2016 | 100,000 | Acquired |
| July 14, 2010 | KOSS | Employee Stock Option (right to buy) | Common Stock | $5.76 | July 14, 2015 | 100,000 | Acquired |
| July 15, 2009 | KOSS | Employee Stock Option (right to buy) | Common Stock | · | July 15, 2014 | 100,000 | Acquired |
| May 8, 2008 | KOSS | Employee Stock Option (right to buy) | Common Stock | · | May 8, 2013 | 60,000 | Acquired |
| May 9, 2007 | KOSS | Employee Stock Option (right to buy) | Common Stock | · | May 9, 2012 | 40,000 | Acquired |
| Jan. 17, 2006 | KOSS | Stock Option (right to buy) | Common Stock | $18.43 | April 25, 2006 | 40,000 | Disposed |
| April 19, 2005 | KOSS | Stock Option (right to buy) | Common Stock | $7.40 | May 1, 2005 | 19,000 | Disposed |
| Sept. 13, 2004 | KOSS | Stock option | Common Stock | $7.40 | May 1, 2005 | 11,000 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).