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Portolan Capital Management, LLC
> MTRN
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | MATERION Corp | MTRN | 48,707 | 48,707 | 5,562,339,000 | 5,562,339,000 | $114,199.99 |
| 09/30/2022 | MATERION Corp | MTRN | 0 | -44,614 | 0 | -3,289,000 | |
| 06/30/2022 | MATERION Corp | MTRN | 44,614 | 5,692 | 3,289,000 | -48,000 | $73.72 |
| 03/31/2022 | MATERION Corp | MTRN | 38,922 | 38,922 | 3,337,000 | 3,337,000 | $85.74 |
| 03/31/2016 | MATERION Corp | MTRN | 0 | -36,359 | 0 | -1,282,000 | |
| 09/30/2015 | MATERION Corp | MTRN | 0 | -36,359 | 0 | -1,282,000 | |
| 06/30/2015 | MATERION Corp | MTRN | 36,359 | 36,359 | 1,282,000 | 1,282,000 | $35.26 |
| 03/31/2015 | MATERION Corp | MTRN | 89,277 | 89,277 | 3,431,000 | 3,431,000 | $38.43 |
| 12/31/2011 | MATERION Corp | MTRN | 0 | -26,962 | 0 | -997,000 | |
| 06/30/2011 | MATERION Corp | MTRN | 26,962 | 26,962 | 997,000 | 997,000 | $36.98 |
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