John C Koss JR
CIK 1217521 · View on SEC EDGAR ↗
Insider
First SEC filing: July 25, 2019 · Latest: July 25, 2019
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 52 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
52 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| June 12, 2025 | KOSS | S | 1,500 | $5.02 | $7,530 | 196,028 Direct | -0.76% | Disposed | -28.2% (price as of 2026-08-19) |
| June 11, 2025 | KOSS | S | 23,500 | $5.65 | $132,775 | 196,028 Direct | -10.70% | Disposed | -36.2% (price as of 2026-08-19) |
| June 10, 2025 | KOSS | S | 25,000 | $5.80 | $145,000 | 196,028 Direct | -11.31% | Disposed | -37.8% (price as of 2026-08-19) |
| Dec. 12, 2024 | KOSS | S | 25,000 | $7.39 | $184,750 | 196,028 Direct | -11.31% | Disposed | -51.2% (price as of 2026-08-19) |
| May 20, 2024 | KOSS | S | 25,000 | $5.25 | $131,250 | 196,028 Direct | -11.31% | Disposed | -31.3% (price as of 2026-08-19) |
| Aug. 31, 2021 | KOSS | S | 10,000 | $18.38 | $183,800 | 151,028 Direct | -6.21% | Disposed | -80.4% (price as of 2026-08-19) |
| Aug. 30, 2021 | KOSS | S | 5,000 | $18.26 | $91,300 | 151,028 Direct | -3.20% | Disposed | -80.3% (price as of 2026-08-19) |
| Aug. 27, 2021 | KOSS | S | 10,000 | $18.06 | $180,600 | 151,028 Direct | -6.21% | Disposed | -80.0% (price as of 2026-08-19) |
| Aug. 24, 2021 | KOSS | S | 25,000 | $20.06 | $501,500 | 151,028 Direct | -14.20% | Disposed | -82.0% (price as of 2026-08-19) |
| Aug. 24, 2021 | KOSS | S | 13,737 | $18.27 | $250,975 | 176,028 Direct | -7.24% | Disposed | -80.3% (price as of 2026-08-19) |
| Aug. 24, 2021 | KOSS | S | 36,263 | $17.40 | $630,976 | 189,765 Direct | -16.04% | Disposed | -79.3% (price as of 2026-08-19) |
| June 15, 2021 | KOSS | S | 5,000 | $24.22 | $121,100 | 151,028 Direct | -3.20% | Disposed | -85.1% (price as of 2026-08-19) |
| June 14, 2021 | KOSS | S | 3,000 | $25.20 | $75,600 | 156,028 Direct | -1.89% | Disposed | -85.7% (price as of 2026-08-19) |
| June 9, 2021 | KOSS | S | 5,000 | $27.00 | $135,000 | 159,028 Direct | -3.05% | Disposed | -86.6% (price as of 2026-08-19) |
| June 8, 2021 | KOSS | S | 8,133 | $30.00 | $243,990 | 164,028 Direct | -4.72% | Disposed | -88.0% (price as of 2026-08-19) |
| June 3, 2021 | KOSS | S | 5,000 | $35.36 | $176,800 | 172,161 Direct | -2.82% | Disposed | -89.8% (price as of 2026-08-19) |
| June 3, 2021 | KOSS | S | 5,000 | $32.50 | $162,500 | 177,161 Direct | -2.74% | Disposed | -88.9% (price as of 2026-08-19) |
| June 3, 2021 | KOSS | S | 5,000 | $30.00 | $150,000 | 182,161 Direct | -2.67% | Disposed | -88.0% (price as of 2026-08-19) |
| June 3, 2021 | KOSS | S | 5,000 | $31.35 | $156,750 | 187,161 Direct | -2.60% | Disposed | -88.5% (price as of 2026-08-19) |
| June 2, 2021 | KOSS | S | 5,000 | $28.00 | $140,000 | 192,161 Direct | -2.54% | Disposed | -87.1% (price as of 2026-08-19) |
| June 1, 2021 | KOSS | S | 5,000 | $25.00 | $125,000 | 197,161 Direct | -2.47% | Disposed | -85.6% (price as of 2026-08-19) |
| May 28, 2021 | KOSS | S | 10,000 | $23.50 | $235,000 | 202,161 Direct | -4.71% | Disposed | -84.7% (price as of 2026-08-19) |
| March 10, 2021 | KOSS | S | 4,000 | $36.72 | $146,880 | 217,161 Direct | -1.81% | Disposed | -90.2% (price as of 2026-08-19) |
| March 10, 2021 | KOSS | S | 5,000 | $30.00 | $150,000 | 221,161 Direct | -2.21% | Disposed | -88.0% (price as of 2026-08-19) |
| March 10, 2021 | KOSS | S | 10,000 | $27.95 | $279,500 | 226,161 Direct | -4.23% | Disposed | -87.1% (price as of 2026-08-19) |
| March 10, 2021 | KOSS | S | 10,000 | $25.22 | $252,200 | 236,161 Direct | -4.06% | Disposed | -85.7% (price as of 2026-08-19) |
| Feb. 25, 2021 | KOSS | S | 40,000 | $27.06 | $1,082,400 | 707,949 Indirect | -5.35% | Disposed | -86.7% (price as of 2026-08-19) |
| Feb. 25, 2021 | KOSS | S | 10,000 | $23.51 | $235,100 | 747,949 Indirect | -1.32% | Disposed | -84.7% (price as of 2026-08-19) |
| Feb. 25, 2021 | KOSS | S | 10,000 | $30.13 | $301,300 | 256,161 Direct | -3.76% | Disposed | -88.0% (price as of 2026-08-19) |
| Feb. 4, 2021 | KOSS | S | 5,000 | $24.00 | $120,000 | 266,161 Direct | -1.84% | Disposed | -85.0% (price as of 2026-08-19) |
| Feb. 3, 2021 | KOSS | S | 10,000 | $25.44 | $254,400 | 271,161 Direct | -3.56% | Disposed | -85.8% (price as of 2026-08-19) |
| Feb. 2, 2021 | KOSS | S | 30,000 | $19.84 | $595,200 | 757,949 Indirect | -3.81% | Disposed | -81.8% (price as of 2026-08-19) |
| Feb. 2, 2021 | KOSS | S | 5,133 | $18.07 | $92,753 | 281,161 Direct | -1.79% | Disposed | -80.0% (price as of 2026-08-19) |
| Feb. 2, 2021 | KOSS | S | 35,000 | $23.56 | $824,600 | 286,294 Direct | -10.89% | Disposed | -84.7% (price as of 2026-08-19) |
| Feb. 1, 2021 | KOSS | S | 20,000 | $35.01 | $700,200 | 787,949 Indirect | -2.48% | Disposed | -89.7% (price as of 2026-08-19) |
| Feb. 1, 2021 | KOSS | S | 20,000 | $41.81 | $836,200 | 807,949 Indirect | -2.42% | Disposed | -91.4% (price as of 2026-08-19) |
| Feb. 1, 2021 | KOSS | S | 5,000 | $44.00 | $220,000 | 827,949 Indirect | -0.60% | Disposed | -91.8% (price as of 2026-08-19) |
| Feb. 1, 2021 | KOSS | S | 25,000 | $48.26 | $1,206,500 | 832,949 Indirect | -2.91% | Disposed | -92.5% (price as of 2026-08-19) |
| Feb. 1, 2021 | KOSS | S | 17,779 | $49.47 | $879,527 | 0 Indirect | -100.00% | Disposed | -92.7% (price as of 2026-08-19) |
| Feb. 1, 2021 | KOSS | S | 10,000 | $55.18 | $551,800 | 17,779 Indirect | -36.00% | Disposed | -93.5% (price as of 2026-08-19) |
| Feb. 1, 2021 | KOSS | S | 10,000 | $34.04 | $340,400 | 321,294 Direct | -3.02% | Disposed | -89.4% (price as of 2026-08-19) |
| Feb. 1, 2021 | KOSS | S | 25,000 | $35.06 | $876,500 | 331,294 Direct | -7.02% | Disposed | -89.7% (price as of 2026-08-19) |
| Feb. 1, 2021 | KOSS | S | 43,167 | $36.63 | $1,581,207 | 356,294 Direct | -10.81% | Disposed | -90.2% (price as of 2026-08-19) |
| Feb. 1, 2021 | KOSS | S | 16,000 | $38.26 | $612,160 | 399,461 Direct | -3.85% | Disposed | -90.6% (price as of 2026-08-19) |
| Feb. 1, 2021 | KOSS | S | 47,033 | $39.13 | $1,840,401 | 415,461 Direct | -10.17% | Disposed | -90.8% (price as of 2026-08-19) |
| Feb. 1, 2021 | KOSS | S | 35,283 | $41.11 | $1,450,484 | 462,494 Direct | -7.09% | Disposed | -91.2% (price as of 2026-08-19) |
| Feb. 1, 2021 | KOSS | S | 96,250 | $42.24 | $4,065,600 | 497,777 Direct | -16.20% | Disposed | -91.5% (price as of 2026-08-19) |
| Feb. 1, 2021 | KOSS | S | 12,267 | $45.62 | $559,621 | 594,027 Direct | -2.02% | Disposed | -92.1% (price as of 2026-08-19) |
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 (1,500) | $1.90 | July 22, 2025 | 1,500 | Disposed |
| June 11, 2025 | KOSS | Stock Option (Right to Buy) | Common Stock (23,500) | $1.90 | July 22, 2025 | 23,500 | Disposed |
| June 10, 2025 | KOSS | Stock Option (Right to Buy) | Common Stock (25,000) | $1.90 | July 22, 2025 | 25,000 | Disposed |
| Dec. 12, 2024 | KOSS | Stock Option (Right to Buy) | Common Stock (25,000) | $1.90 | July 22, 2025 | 25,000 | Disposed |
| May 20, 2024 | KOSS | Stock Option (right to buy) | Common Stock (25,000) | $2.17 | July 24, 2024 | 25,000 | Disposed |
| Aug. 31, 2021 | KOSS | Stock Option (right to buy) | Common Stock (10,000) | $1.90 | July 22, 2025 | 10,000 | Disposed |
| Aug. 30, 2021 | KOSS | Stock Option (right to buy) | Common Stock (5,000) | $1.90 | July 22, 2025 | 5,000 | Disposed |
| Aug. 27, 2021 | KOSS | Stock Option (right to buy) | Common Stock (10,000) | $1.90 | July 22, 2025 | 10,000 | Disposed |
| Aug. 24, 2021 | KOSS | Stock Option (right to buy) | Common Stock (25,000) | $2.17 | July 24, 2024 | 25,000 | Disposed |
| Aug. 24, 2021 | KOSS | Stock Option (right to buy) | Common Stock (25,000) | $2.92 | July 25, 2023 | 25,000 | Disposed |
| Aug. 24, 2021 | KOSS | Stock Option (right to buy) | Common Stock (25,000) | $1.95 | July 26, 2022 | 25,000 | Disposed |
| Feb. 1, 2021 | KOSS | Stock Option (right to buy) | Common Stock (25,000) | $2.17 | July 24, 2024 | 25,000 | Disposed |
| Feb. 1, 2021 | KOSS | Stock Option (right to buy) | Common Stock (50,000) | $2.92 | July 25, 2023 | 50,000 | Disposed |
| Feb. 1, 2021 | KOSS | Stock Option (right to buy) | Common Stock (75,000) | $1.95 | July 26, 2022 | 75,000 | Disposed |
| Feb. 1, 2021 | KOSS | Stock Option (right to buy) | Common Stock (100,000) | $2.42 | July 27, 2021 | 100,000 | Disposed |
| July 22, 2020 | KOSS | Stock Options (Right to Buy) | Common Stock (100,000) | $1.90 | July 22, 2025 | 100,000 | Acquired |
| July 24, 2019 | KOSS | Common Stock | Common Stock (100,000) | $2.17 | July 24, 2024 | 100,000 | Acquired |
| July 25, 2018 | KOSS | Common Stock | Common Stock (100,000) | $2.92 | July 25, 2023 | 100,000 | Acquired |
| July 26, 2017 | KOSS | Stock Option (right to buy) | Common Stock (100,000) | $1.95 | July 26, 2022 | 100,000 | Acquired |
| July 27, 2016 | KOSS | Stock Option (right to buy) | Common Stock (100,000) | $2.42 | July 27, 2021 | 100,000 | Acquired |
| July 29, 2015 | KOSS | Stock Option (right to buy) | Common Stock (100,000) | $2.83 | July 29, 2020 | 100,000 | Acquired |
| July 23, 2014 | KOSS | Stock Option (right to buy) | Common Stock (100,000) | $3.30 | July 23, 2024 | 100,000 | Acquired |
| July 24, 2013 | KOSS | Stock Option (right to buy) | Common Stock (100,000) | $5.83 | July 24, 2023 | 100,000 | Acquired |
| July 25, 2012 | KOSS | Employee Stock Option (right to buy) | Common Stock (100,000) | $5.47 | July 25, 2017 | 100,000 | Acquired |
| July 27, 2011 | KOSS | Employee Stock Option (right to buy) | Common Stock (100,000) | $6.60 | July 27, 2016 | 100,000 | Acquired |
| July 14, 2010 | KOSS | Employee Stock Option (right to buy) | Common Stock (100,000) | $5.76 | July 14, 2015 | 100,000 | Acquired |
| July 15, 2009 | KOSS | Employee Stock Option (right to buy) | Common Stock (100,000) | — | July 15, 2014 | 100,000 | Acquired |
| May 8, 2008 | KOSS | Employee Stock Option (right to buy) | Common Stock (60,000) | — | May 8, 2013 | 60,000 | Acquired |
| May 9, 2007 | KOSS | Employee Stock Option (right to buy) | Common Stock (40,000) | — | May 9, 2012 | 40,000 | Acquired |
| Jan. 17, 2006 | KOSS | Stock Option (right to buy) | Common Stock (40,000) | $18.43 | April 25, 2006 | 40,000 | Disposed |
| April 19, 2005 | KOSS | Stock Option (right to buy) | Common Stock (19,000) | $7.40 | May 1, 2005 | 19,000 | Disposed |
| Sept. 13, 2004 | KOSS | Stock option | Common Stock (11,000) | $7.40 | May 1, 2005 | 11,000 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).