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PERRITT CAPITAL MANAGEMENT INC
> OSS
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | ONE STOP SYSTEMS, INC. | OSS | 43,266 | -11,734 | 124,173,000 | -12,227,000 | $2,869.99 |
| 03/31/2023 | ONE STOP SYSTEMS, INC. | OSS | 55,000 | 0 | 136,400,000 | -29,150,000 | $2,480.00 |
| 12/31/2022 | ONE STOP SYSTEMS, INC. | OSS | 55,000 | 0 | 165,550,000 | 165,374,000 | $3,010.00 |
| 09/30/2022 | ONE STOP SYSTEMS, INC. | OSS | 55,000 | 0 | 176,000 | -41,000 | $3.20 |
| 06/30/2022 | ONE STOP SYSTEMS, INC. | OSS | 55,000 | 0 | 217,000 | 7,000 | $3.95 |
| 03/31/2022 | ONE STOP SYSTEMS, INC. | OSS | 55,000 | 0 | 210,000 | -62,000 | $3.82 |
| 12/31/2021 | ONE STOP SYSTEMS, INC. | OSS | 55,000 | 0 | 272,000 | -5,000 | $4.95 |
| 09/30/2021 | ONE STOP SYSTEMS, INC. | OSS | 55,000 | 0 | 277,000 | -41,000 | $5.04 |
| 06/30/2021 | ONE STOP SYSTEMS, INC. | OSS | 55,000 | -10,000 | 318,000 | 58,000 | $5.78 |
| 12/31/2020 | ONE STOP SYSTEMS, INC. | OSS | 65,000 | 15,000 | 260,000 | 155,000 | $4.00 |
| 09/30/2020 | ONE STOP SYSTEMS, INC. | OSS | 50,000 | 50,000 | 105,000 | 105,000 | $2.10 |
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