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GRUBER & MCBAINE CAPITAL MANAGEMENT LLC
> MTSN
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2015 | MATTSON TECHNOLOGY INC | MTSN | 510,000 | -40,000 | 1,709,000 | -458,000 | $3.35 |
| 03/31/2015 | MATTSON TECHNOLOGY INC | MTSN | 550,000 | 550,000 | 2,167,000 | 2,167,000 | $3.94 |
| 12/31/2014 | MATTSON TECHNOLOGY INC | MTSN | 900,000 | 900,000 | 3,060,000 | 3,060,000 | $3.40 |
| 09/30/2014 | MATTSON TECHNOLOGY INC | MTSN | 721,300 | 721,300 | 1,976,000 | 1,976,000 | $2.74 |
| 06/30/2014 | MATTSON TECHNOLOGY INC | MTSN | 850,000 | 128,700 | 1,862,000 | -114,000 | $2.19 |
| 03/31/2014 | MATTSON TECHNOLOGY INC | MTSN | 800,000 | 78,700 | 1,856,000 | -120,000 | $2.32 |
| 12/31/2013 | MATTSON TECHNOLOGY INC | MTSN | 721,300 | 721,300 | 1,976,000 | 1,976,000 | $2.74 |
| 09/30/2013 | MATTSON TECHNOLOGY INC | MTSN | 619,000 | 619,000 | 1,479,000 | 1,479,000 | $2.39 |
| 03/31/2010 | MATTSON TECHNOLOGY INC | MTSN | 0 | -175,000 | 0 | -626,000 | |
| 12/31/2009 | MATTSON TECHNOLOGY INC | MTSN | 175,000 | 175,000 | 626,000 | 626,000 | $3.58 |
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