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NORTHERN TRUST CORP
> KOSS
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | KOSS CORP | KOSS | 15,971 | 0 | 59,093,000 | -14,693,000 | $3,700.02 |
| 03/31/2023 | KOSS CORP | KOSS | 15,971 | 2,735 | 73,786,000 | 73,702,000 | $4,620.00 |
| 09/30/2022 | KOSS CORP | KOSS | 13,236 | -2,377 | 84,000 | -25,000 | $6.35 |
| 06/30/2022 | KOSS CORP | KOSS | 15,613 | 143 | 109,000 | -33,000 | $6.98 |
| 03/31/2022 | KOSS CORP | KOSS | 15,470 | 0 | 142,000 | -23,000 | $9.18 |
| 12/31/2021 | KOSS CORP | KOSS | 15,470 | 1,273 | 165,000 | -67,000 | $10.67 |
| 09/30/2021 | KOSS CORP | KOSS | 14,197 | 1,563 | 232,000 | -61,000 | $16.34 |
| 06/30/2021 | KOSS CORP | KOSS | 12,634 | -2,307 | 293,000 | 242,000 | $23.19 |
| 12/31/2020 | KOSS CORP | KOSS | 14,941 | -4,543 | 51,000 | 9,000 | $3.41 |
| 09/30/2020 | KOSS CORP | KOSS | 19,484 | 4,089 | 42,000 | 28,000 | $2.16 |
| 03/31/2020 | KOSS CORP | KOSS | 15,395 | 0 | 14,000 | -10,000 | $0.91 |
| 12/31/2019 | KOSS CORP | KOSS | 15,395 | -146 | 24,000 | -7,000 | $1.56 |
| 09/30/2019 | KOSS CORP | KOSS | 15,541 | -300 | 31,000 | -1,000 | $1.99 |
| 06/30/2019 | KOSS CORP | KOSS | 15,841 | 0 | 32,000 | -1,000 | $2.02 |
| 03/31/2019 | KOSS CORP | KOSS | 15,841 | 0 | 33,000 | 3,000 | $2.08 |
| 12/31/2018 | KOSS CORP | KOSS | 15,841 | 0 | 30,000 | -15,000 | $1.89 |
| 09/30/2018 | KOSS CORP | KOSS | 15,841 | 0 | 45,000 | 8,000 | $2.84 |
| 06/30/2018 | KOSS CORP | KOSS | 15,841 | -86 | 37,000 | 9,000 | $2.34 |
| 03/31/2018 | KOSS CORP | KOSS | 15,927 | -800 | 28,000 | -24,000 | $1.76 |
| 12/31/2017 | KOSS CORP | KOSS | 16,727 | 0 | 52,000 | 27,000 | $3.11 |
| 09/30/2017 | KOSS CORP | KOSS | 16,727 | -200 | 25,000 | -6,000 | $1.49 |
| 06/30/2017 | KOSS CORP | KOSS | 16,927 | 1,188 | 31,000 | -2,000 | $1.83 |
| 03/31/2017 | KOSS CORP | KOSS | 15,739 | 15,739 | 33,000 | 33,000 | $2.10 |
| 09/30/2009 | KOSS CORP | KOSS | 0 | -10,600 | 0 | -113,000 | |
| 03/31/2009 | KOSS CORP | KOSS | 0 | -10,600 | 0 | -113,000 | |
| 09/30/1999 | KOSS CORP | KOSS | 10,600 | -1,200 | 113,000 | -29,000 | $10.66 |
| 06/30/1999 | KOSS CORP | KOSS | 11,800 | 0 | 142,000 | 8,000 | $12.03 |
| 03/31/1999 | KOSS CORP | KOSS | 11,800 | 11,800 | 134,000 | 134,000 | $11.36 |
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