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> RBCN
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | Rubicon Technology, Inc. | RBCN | 0 | -128,323 | 0 | -275,000 | |
| 09/30/2022 | Rubicon Technology, Inc. | RBCN | 128,323 | -129,933 | 275,000 | -2,098,000 | $2.14 |
| 06/30/2022 | Rubicon Technology, Inc. | RBCN | 258,256 | 0 | 2,373,000 | -24,000 | $9.19 |
| 03/31/2022 | Rubicon Technology, Inc. | RBCN | 258,256 | 0 | 2,397,000 | 80,000 | $9.28 |
| 12/31/2021 | Rubicon Technology, Inc. | RBCN | 258,256 | 0 | 2,317,000 | -289,000 | $8.97 |
| 09/30/2021 | Rubicon Technology, Inc. | RBCN | 258,256 | 0 | 2,606,000 | 153,000 | $10.09 |
| 06/30/2021 | Rubicon Technology, Inc. | RBCN | 258,256 | 0 | 2,453,000 | -212,000 | $9.50 |
| 03/31/2021 | Rubicon Technology, Inc. | RBCN | 258,256 | 0 | 2,665,000 | 328,000 | $10.32 |
| 12/31/2020 | Rubicon Technology, Inc. | RBCN | 258,256 | 0 | 2,337,000 | 142,000 | $9.05 |
| 09/30/2020 | Rubicon Technology, Inc. | RBCN | 258,256 | 0 | 2,195,000 | 97,000 | $8.50 |
| 08/14/2020 | Rubicon Technology, Inc. | RBCN | 261,450 | 3,194 | 2,150,426 | 52,426 | $8.23 |
| 06/30/2020 | Rubicon Technology, Inc. | RBCN | 258,256 | 0 | 2,098,000 | 105,000 | $8.12 |
| 03/31/2020 | Rubicon Technology, Inc. | RBCN | 258,256 | 0 | 1,993,000 | -156,000 | $7.72 |
| 12/31/2019 | Rubicon Technology, Inc. | RBCN | 258,256 | 0 | 2,149,000 | -323,000 | $8.32 |
| 09/30/2019 | Rubicon Technology, Inc. | RBCN | 258,256 | 0 | 2,472,000 | 328,000 | $9.57 |
| 06/30/2019 | Rubicon Technology, Inc. | RBCN | 258,256 | 0 | 2,144,000 | 60,000 | $8.30 |
| 05/03/2019 | Rubicon Technology, Inc. | RBCN | 1,013,284 | 755,028 | 7,885,477 | 5,845,477 | $7.78 |
| 03/31/2019 | Rubicon Technology, Inc. | RBCN | 258,256 | 0 | 2,084,000 | 44,000 | $8.07 |
| 12/31/2018 | Rubicon Technology, Inc. | RBCN | 258,256 | 0 | 2,040,000 | -279,000 | $7.90 |
| 09/30/2018 | Rubicon Technology, Inc. | RBCN | 258,256 | 0 | 2,319,000 | 281,000 | $8.98 |
| 06/30/2018 | Rubicon Technology, Inc. | RBCN | 258,256 | 0 | 2,038,000 | 243,000 | $7.89 |
| 03/31/2018 | Rubicon Technology, Inc. | RBCN | 258,256 | 0 | 1,795,000 | -266,000 | $6.95 |
| 12/31/2017 | Rubicon Technology, Inc. | RBCN | 258,256 | 221,784 | 2,061,000 | 1,760,000 | $7.98 |
| 11/16/2017 | Rubicon Technology, Inc. | RBCN | 258,256 | 221,784 | 2,053,135 | 1,752,135 | $7.95 |
| 09/30/2017 | Rubicon Technology, Inc. | RBCN | 36,472 | 36,472 | 301,000 | 301,000 | $8.25 |
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