Michael J Koss
CIK 1190293 · View on SEC EDGAR ↗
Insider
First SEC filing: July 25, 2019 · Latest: July 25, 2019
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Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 44 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
44 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Sept. 1, 2021 | KOSS | S | 780 | $18.75 | $14,625 | 774,907 Direct | -0.10% | Disposed | -80.8% (price as of 2026-08-19) |
| Aug. 31, 2021 | KOSS | S | 9,220 | $18.51 | $170,662 | 774,907 Direct | -1.18% | Disposed | -80.5% (price as of 2026-08-19) |
| Aug. 30, 2021 | KOSS | S | 5,400 | $18.28 | $98,712 | 774,907 Direct | -0.69% | Disposed | -80.3% (price as of 2026-08-19) |
| Aug. 27, 2021 | KOSS | S | 4,600 | $18.06 | $83,076 | 774,907 Direct | -0.59% | Disposed | -80.0% (price as of 2026-08-19) |
| Aug. 26, 2021 | KOSS | S | 8,500 | $18.33 | $155,805 | 774,907 Direct | -1.09% | Disposed | -80.3% (price as of 2026-08-19) |
| Aug. 24, 2021 | KOSS | S | 16,500 | $19.74 | $325,710 | 774,907 Direct | -2.08% | Disposed | -81.7% (price as of 2026-08-19) |
| June 2, 2021 | KOSS | S | 5,000 | $43.00 | $215,000 | 27,000 Indirect | -15.62% | Disposed | -91.6% (price as of 2026-08-19) |
| June 2, 2021 | KOSS | S | 5,000 | $30.00 | $150,000 | 32,000 Indirect | -13.51% | Disposed | -88.0% (price as of 2026-08-19) |
| June 2, 2021 | KOSS | S | 8,221 | $29.63 | $243,588 | 774,907 Direct | -1.05% | Disposed | -87.8% (price as of 2026-08-19) |
| June 2, 2021 | KOSS | S | 10,000 | $28.18 | $281,800 | 783,128 Direct | -1.26% | Disposed | -87.2% (price as of 2026-08-19) |
| June 2, 2021 | KOSS | S | 25,000 | $26.11 | $652,750 | 793,128 Direct | -3.06% | Disposed | -86.2% (price as of 2026-08-19) |
| June 1, 2021 | KOSS | S | 11,779 | $25.04 | $294,946 | 774,907 Direct | -1.50% | Disposed | -85.6% (price as of 2026-08-19) |
| May 26, 2021 | KOSS | S | 9,000 | $21.26 | $191,340 | 774,907 Direct | -1.15% | Disposed | -83.0% (price as of 2026-08-19) |
| March 12, 2021 | KOSS | S | 4,122 | $29.99 | $123,619 | 37,000 Indirect | -10.02% | Disposed | -88.0% (price as of 2026-08-19) |
| March 10, 2021 | KOSS | S | 10,000 | $38.05 | $380,500 | 41,122 Indirect | -19.56% | Disposed | -90.5% (price as of 2026-08-19) |
| March 10, 2021 | KOSS | S | 4,000 | $29.10 | $116,400 | 51,122 Indirect | -7.26% | Disposed | -87.6% (price as of 2026-08-19) |
| March 10, 2021 | KOSS | S | 10,000 | $29.00 | $290,000 | 783,907 Direct | -1.26% | Disposed | -87.6% (price as of 2026-08-19) |
| March 10, 2021 | KOSS | S | 5,000 | $39.90 | $199,500 | 793,907 Direct | -0.63% | Disposed | -91.0% (price as of 2026-08-19) |
| March 10, 2021 | KOSS | S | 20,000 | $37.72 | $754,400 | 798,907 Direct | -2.44% | Disposed | -90.4% (price as of 2026-08-19) |
| March 10, 2021 | KOSS | S | 20,000 | $26.85 | $537,000 | 818,907 Direct | -2.38% | Disposed | -86.6% (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 | $32.50 | $325,000 | 55,122 Indirect | -15.36% | Disposed | -88.9% (price as of 2026-08-19) |
| Feb. 25, 2021 | KOSS | S | 10,000 | $32.50 | $325,000 | 798,907 Direct | -1.24% | Disposed | -88.9% (price as of 2026-08-19) |
| Feb. 25, 2021 | KOSS | S | 25,000 | $30.23 | $755,750 | 808,907 Direct | -3.00% | Disposed | -88.1% (price as of 2026-08-19) |
| Feb. 3, 2021 | KOSS | S | 20,000 | $26.58 | $531,600 | 813,907 Direct | -2.40% | Disposed | -86.4% (price as of 2026-08-19) |
| Feb. 3, 2021 | KOSS | S | 5,000 | $26.00 | $130,000 | 76,122 Indirect | -6.16% | Disposed | -86.1% (price as of 2026-08-19) |
| Feb. 3, 2021 | KOSS | S | 11,000 | $27.13 | $298,430 | 65,122 Indirect | -14.45% | Disposed | -86.7% (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. 1, 2021 | KOSS | S | 34,000 | $60.00 | $2,040,000 | 81,122 Indirect | -29.53% | Disposed | -94.0% (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 | 25,000 | $37.56 | $939,000 | 833,907 Direct | -2.91% | Disposed | -90.4% (price as of 2026-08-19) |
| Feb. 1, 2021 | KOSS | S | 39,000 | $39.02 | $1,521,780 | 858,907 Direct | -4.34% | Disposed | -90.8% (price as of 2026-08-19) |
| Feb. 1, 2021 | KOSS | S | 86,000 | $39.61 | $3,406,460 | 897,907 Direct | -8.74% | Disposed | -90.9% (price as of 2026-08-19) |
| Feb. 1, 2021 | KOSS | S | 10,000 | $41.55 | $415,500 | 983,907 Direct | -1.01% | Disposed | -91.3% (price as of 2026-08-19) |
| Feb. 1, 2021 | KOSS | S | 30,000 | $46.12 | $1,383,600 | 993,907 Direct | -2.93% | Disposed | -92.2% (price as of 2026-08-19) |
| May 17, 2017 | KOSS | P | 200 | $1.64 | $328 | 859,907 Direct | +0.02% | Acquired | 119.8% (price as of 2026-08-19) |
| May 17, 2017 | KOSS | P | 1,000 | $1.64 | $1,640 | 860,907 Direct | +0.12% | Acquired | 119.8% (price as of 2026-08-19) |
| May 17, 2017 | KOSS | P | 1,600 | $1.68 | $2,688 | 862,507 Direct | +0.19% | Acquired | 114.6% (price as of 2026-08-19) |
| May 17, 2017 | KOSS | P | 300 | $1.69 | $507 | 862,807 Direct | +0.03% | Acquired | 113.3% (price as of 2026-08-19) |
| May 17, 2017 | KOSS | P | 1,100 | $1.69 | $1,859 | 863,907 Direct | +0.13% | Acquired | 113.3% (price as of 2026-08-19) |
| Nov. 19, 2014 | KOSS | P | 10,000 | $1.55 | $15,500 | 75,461 Indirect | +15.28% | Acquired | 132.6% (price as of 2026-08-19) |
| Nov. 11, 2014 | KOSS | P | 5,000 | $1.65 | $8,250 | 65,461 Indirect | +8.27% | Acquired | 118.5% (price as of 2026-08-19) |
| Nov. 11, 2014 | KOSS | P | 1,000 | $1.59 | $1,590 | 159,122 Indirect | +0.63% | Acquired | 126.7% (price as of 2026-08-19) |
| Nov. 7, 2014 | KOSS | P | 1,800 | $1.50 | $2,700 | 60,461 Indirect | +3.07% | Acquired | 140.3% (price as of 2026-08-19) |
| Nov. 7, 2014 | KOSS | P | 200 | $1.50 | $300 | 58,661 Indirect | +0.34% | Acquired | 140.3% (price as of 2026-08-19) |
| Nov. 6, 2014 | KOSS | P | 100 | $1.58 | $158 | 784,246 Direct | +0.01% | Acquired | 128.2% (price as of 2026-08-19) |
| Nov. 6, 2014 | KOSS | P | 4,200 | $1.59 | $6,678 | 784,146 Direct | +0.54% | Acquired | 126.7% (price as of 2026-08-19) |
| Nov. 6, 2014 | KOSS | P | 600 | $1.59 | $954 | 779,946 Direct | +0.08% | Acquired | 126.7% (price as of 2026-08-19) |
| Nov. 6, 2014 | KOSS | P | 100 | $1.52 | $152 | 779,346 Direct | +0.01% | Acquired | 137.2% (price as of 2026-08-19) |
| Nov. 6, 2014 | KOSS | P | 8,874 | $1.80 | $15,973 | 58,461 Indirect | +17.90% | Acquired | 100.3% (price as of 2026-08-19) |
| Nov. 6, 2014 | KOSS | P | 300 | $1.79 | $537 | 49,587 Indirect | +0.61% | Acquired | 101.4% (price as of 2026-08-19) |
| Nov. 6, 2014 | KOSS | P | 800 | $1.80 | $1,440 | 49,287 Indirect | +1.65% | Acquired | 100.3% (price as of 2026-08-19) |
Showing latest 100 of 160 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 |
|---|---|---|---|---|---|---|---|
| Sept. 1, 2021 | KOSS | Stock Option (right to buy) | Common Stock (780) | $1.95 | July 26, 2022 | 780 | Disposed |
| Aug. 31, 2021 | KOSS | Stock Option (right to buy) | Common Stock (9,220) | $1.95 | July 26, 2022 | 9,220 | Disposed |
| Aug. 30, 2021 | KOSS | Stock Option (right to buy) | Common Stock (5,400) | $1.95 | July 26, 2022 | 5,400 | Disposed |
| Aug. 27, 2021 | KOSS | Stock Option (right to buy) | Common Stock (4,600) | $1.95 | July 26, 2022 | 4,600 | Disposed |
| Aug. 26, 2021 | KOSS | Stock Option (right to buy) | Common Stock (8,500) | $1.95 | July 26, 2022 | 8,500 | Disposed |
| Aug. 24, 2021 | KOSS | Stock Option (right to buy) | Common Stock (16,500) | $1.95 | July 26, 2022 | 16,500 | Disposed |
| June 2, 2021 | KOSS | Stock Option (right to buy) | Common Stock (43,221) | $1.95 | July 26, 2022 | 43,221 | Disposed |
| June 1, 2021 | KOSS | Stock Option (right to buy) | Common Stock (11,779) | $1.95 | July 26, 2022 | 11,779 | Disposed |
| March 10, 2021 | KOSS | Stock Option (right to buy) | Common Stock (40,000) | $1.95 | July 26, 2022 | 40,000 | Disposed |
| Feb. 25, 2021 | KOSS | Stock Option (right to buy) | Common Stock (20,000) | $1.95 | July 26, 2022 | 20,000 | Disposed |
| Feb. 1, 2021 | KOSS | Stock Option (Right to Buy) | Common Stock (160,000) | $2.42 | July 27, 2021 | 160,000 | Disposed |
| July 22, 2020 | KOSS | Stock Options (Right to Buy) | Common Stock (160,000) | $1.90 | July 22, 2025 | 160,000 | Acquired |
| July 24, 2019 | KOSS | Common Stock | Common Stock (160,000) | $2.17 | July 24, 2024 | 160,000 | Acquired |
| July 25, 2018 | KOSS | Stock Option (right to buy) | Common Stock (160,000) | $2.92 | July 25, 2023 | 160,000 | Acquired |
| July 26, 2017 | KOSS | Stock Option (right to buy) | Common Stock (160,000) | $1.95 | July 26, 2022 | 160,000 | Acquired |
| July 27, 2016 | KOSS | Stock Option (right to buy) | Common Stock (160,000) | $2.42 | July 27, 2021 | 160,000 | Acquired |
| July 29, 2015 | KOSS | Stock Option (right to buy) | Common Stock (160,000) | $2.83 | July 29, 2020 | 160,000 | Acquired |
| July 23, 2014 | KOSS | Stock Option (right to buy) | Common Stock (160,000) | $3.30 | July 23, 2024 | 160,000 | Acquired |
| July 24, 2013 | KOSS | Stock Option (right to buy) | Common Stock (160,000) | $5.83 | July 24, 2023 | 160,000 | Acquired |
| July 25, 2012 | KOSS | Employee Stock Option (right to buy) | Common Stock (160,000) | $5.47 | July 25, 2017 | 160,000 | Acquired |
| July 27, 2011 | KOSS | Employee Stock Option (right to buy) | Common Stock (160,000) | $6.60 | July 27, 2016 | 160,000 | Acquired |
| July 14, 2010 | KOSS | Employee Stock Option (right to buy) | Common Stock (160,000) | $5.76 | July 14, 2015 | 160,000 | Acquired |
| July 15, 2009 | KOSS | Employee Stock Option (right to buy) | Common Stock (160,000) | $6.90 | July 15, 2014 | 160,000 | Acquired |
| May 8, 2008 | KOSS | Employee Stock Option (right to buy) | Common Stock (120,000) | $8.53 | May 8, 2013 | 120,000 | Acquired |
| Sept. 11, 2007 | KOSS | Stock Option (right to buy) | common stock (60,000) | $17.32 | April 30, 2008 | 60,000 | Disposed |
| May 9, 2007 | KOSS | Employee Stock Option (right to buy) | Common Stock (80,000) | $10.71 | May 9, 2012 | 80,000 | Acquired |
| May 8, 2006 | KOSS | Employee Stock Option (right to buy) | Common Stock (80,000) | $14.40 | May 8, 2011 | 80,000 | Acquired |
| Jan. 17, 2006 | KOSS | Stock Option (right to buy) | Common Stock (45,000) | $18.48 | April 24, 2007 | 45,000 | Disposed |
| Jan. 17, 2006 | KOSS | Stock Option (right to buy) | Common Stock (60,000) | $18.43 | April 25, 2006 | 60,000 | Disposed |
| April 18, 2005 | KOSS | Stock Option (right to buy) | Common Stock (40,000) | $7.40 | May 1, 2005 | 40,000 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).