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Tower Research Capital LLC (TRC)
> ASYS
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | AMTECH SYSTEMS INC | ASYS | 538 | -4,409 | 5,143,000 | 5,095,000 | $9,559.48 |
| 03/31/2023 | AMTECH SYSTEMS INC | ASYS | 4,947 | 3,318 | 48,000 | 34,000 | $9.70 |
| 09/30/2022 | AMTECH SYSTEMS INC | ASYS | 1,629 | -773 | 14,000 | -4,000 | $8.59 |
| 06/30/2022 | AMTECH SYSTEMS INC | ASYS | 2,402 | 2,402 | 18,000 | 18,000 | $7.49 |
| 03/31/2022 | AMTECH SYSTEMS INC | ASYS | 0 | -531 | 0 | -5,000 | |
| 12/31/2021 | AMTECH SYSTEMS INC | ASYS | 531 | 531 | 5,000 | 5,000 | $9.42 |
| 09/30/2021 | AMTECH SYSTEMS INC | ASYS | 0 | -1,704 | 0 | -16,000 | |
| 06/30/2021 | AMTECH SYSTEMS INC | ASYS | 1,704 | 571 | 16,000 | 9,000 | $9.39 |
| 12/31/2020 | AMTECH SYSTEMS INC | ASYS | 1,133 | 1,133 | 7,000 | 7,000 | $6.18 |
| 06/30/2020 | AMTECH SYSTEMS INC | ASYS | 0 | -529 | 0 | -2,000 | |
| 03/31/2020 | AMTECH SYSTEMS INC | ASYS | 529 | 431 | 2,000 | 1,000 | $3.78 |
| 12/31/2019 | AMTECH SYSTEMS INC | ASYS | 98 | -5,653 | 1,000 | -29,000 | $10.20 |
| 09/30/2019 | AMTECH SYSTEMS INC | ASYS | 5,751 | 5,676 | 30,000 | 29,588 | $5.22 |
| 06/30/2019 | AMTECH SYSTEMS INC | ASYS | 75 | -8,639 | 413 | -45,588 | $5.50 |
| 03/31/2019 | AMTECH SYSTEMS INC | ASYS | 8,714 | 6,361 | 46,000 | 35,000 | $5.28 |
| 12/31/2018 | AMTECH SYSTEMS INC | ASYS | 2,353 | 2,353 | 11,000 | 11,000 | $4.67 |
| 06/30/2018 | AMTECH SYSTEMS INC | ASYS | 0 | -1,157 | 0 | -8,000 | |
| 03/31/2018 | AMTECH SYSTEMS INC | ASYS | 1,157 | 912 | 8,000 | 6,000 | $6.91 |
| 12/31/2017 | AMTECH SYSTEMS INC | ASYS | 245 | -1,296 | 2,000 | -16,000 | $8.16 |
| 09/30/2017 | AMTECH SYSTEMS INC | ASYS | 1,541 | -3,091 | 18,000 | -21,000 | $11.68 |
| 06/30/2017 | AMTECH SYSTEMS INC | ASYS | 4,632 | 4,622 | 39,000 | 38,945 | $8.42 |
| 03/31/2017 | AMTECH SYSTEMS INC | ASYS | 10 | -1,998 | 55 | -8,945 | $5.50 |
| 12/31/2016 | AMTECH SYSTEMS INC | ASYS | 2,008 | 500 | 9,000 | 2,000 | $4.48 |
| 09/30/2016 | AMTECH SYSTEMS INC | ASYS | 1,508 | -4,803 | 7,000 | -31,000 | $4.64 |
| 06/30/2016 | AMTECH SYSTEMS INC | ASYS | 6,311 | 6,111 | 38,000 | 37,000 | $6.02 |
| 03/31/2016 | AMTECH SYSTEMS INC | ASYS | 1,771 | 1,571 | 12,000 | 11,000 | $6.78 |
| 12/31/2015 | AMTECH SYSTEMS INC | ASYS | 0 | -787 | 0 | -3,000 | |
| 09/30/2015 | AMTECH SYSTEMS INC | ASYS | 787 | 787 | 3,000 | 3,000 | $3.81 |
| 06/30/2015 | AMTECH SYSTEMS INC | ASYS | 0 | -1,561 | 0 | -17,000 | |
| 03/31/2015 | AMTECH SYSTEMS INC | ASYS | 1,561 | 567 | 17,000 | 7,000 | $10.89 |
| 12/31/2014 | AMTECH SYSTEMS INC | ASYS | 994 | 994 | 10,000 | 10,000 | $10.06 |
| 09/30/2014 | AMTECH SYSTEMS INC | ASYS | 0 | -3,714 | 0 | -45,000 | |
| 06/30/2014 | AMTECH SYSTEMS INC | ASYS | 3,714 | 3,118 | 45,000 | 37,000 | $12.12 |
| 03/31/2014 | AMTECH SYSTEMS INC | ASYS | 596 | 129 | 8,000 | 5,000 | $13.42 |
| 12/31/2013 | AMTECH SYSTEMS INC | ASYS | 467 | 267 | 3,000 | 2,000 | $6.42 |
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