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EAM Investors, LLC
> PDFS
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | PDF SOLUTIONS INC | PDFS | 0 | -83,018 | 0 | -3,519,963,000 | |
| 03/31/2023 | PDF SOLUTIONS INC | PDFS | 83,018 | 83,018 | 3,519,963,000 | 3,519,963,000 | $42,400.00 |
| 12/31/2022 | PDF SOLUTIONS INC | PDFS | 0 | -42,601 | 0 | -1,045,000 | |
| 09/30/2022 | PDF SOLUTIONS INC | PDFS | 42,601 | 42,601 | 1,045,000 | 1,045,000 | $24.53 |
| 06/30/2022 | PDF SOLUTIONS INC | PDFS | 0 | -85,585 | 0 | -2,385,000 | |
| 03/31/2022 | PDF SOLUTIONS INC | PDFS | 85,585 | -23,683 | 2,385,000 | -1,089,000 | $27.87 |
| 12/31/2021 | PDF SOLUTIONS INC | PDFS | 109,268 | 109,268 | 3,474,000 | 3,474,000 | $31.79 |
| 12/31/2020 | PDF SOLUTIONS INC | PDFS | 0 | -36,333 | 0 | -680,000 | |
| 09/30/2020 | PDF SOLUTIONS INC | PDFS | 36,333 | 36,333 | 680,000 | 680,000 | $18.72 |
| 03/31/2020 | PDF SOLUTIONS INC | PDFS | 0 | -84,672 | 0 | -1,430,000 | |
| 12/31/2019 | PDF SOLUTIONS INC | PDFS | 84,672 | 84,672 | 1,430,000 | 1,430,000 | $16.89 |
| 03/31/2017 | PDF SOLUTIONS INC | PDFS | 0 | -35,352 | 0 | -797,000 | |
| 12/31/2016 | PDF SOLUTIONS INC | PDFS | 35,352 | -7,728 | 797,000 | 14,000 | $22.54 |
| 09/30/2016 | PDF SOLUTIONS INC | PDFS | 43,080 | -22,138 | 783,000 | -129,000 | $18.18 |
| 06/30/2016 | PDF SOLUTIONS INC | PDFS | 65,218 | 65,218 | 912,000 | 912,000 | $13.98 |
| 03/31/2016 | PDF SOLUTIONS INC | PDFS | 68,936 | 68,936 | 922,000 | 922,000 | $13.37 |
| 12/31/2015 | PDF SOLUTIONS INC | PDFS | 0 | -161,796 | 0 | -2,982,000 | |
| 09/30/2015 | PDF SOLUTIONS INC | PDFS | 0 | -161,796 | 0 | -2,982,000 | |
| 12/31/2014 | PDF SOLUTIONS INC | PDFS | 0 | -161,796 | 0 | -2,982,000 | |
| 06/30/2014 | PDF SOLUTIONS INC | PDFS | 0 | -157,647 | 0 | -3,350,000 | |
| 03/31/2014 | PDF SOLUTIONS INC | PDFS | 0 | -148,562 | 0 | -3,806,000 | |
| 12/31/2013 | PDF SOLUTIONS INC | PDFS | 148,562 | -9,085 | 3,806,000 | 456,000 | $25.62 |
| 09/30/2013 | PDF SOLUTIONS INC | PDFS | 157,647 | -4,149 | 3,350,000 | 368,000 | $21.25 |
| 06/30/2013 | PDF SOLUTIONS INC | PDFS | 161,796 | -35,280 | 2,982,000 | -175,000 | $18.43 |
| 03/31/2013 | PDF SOLUTIONS INC | PDFS | 197,076 | 0 | 3,157,000 | 441,000 | $16.02 |
| 12/31/2012 | PDF SOLUTIONS INC | PDFS | 197,076 | -50,102 | 2,716,000 | -660,000 | $13.78 |
| 09/30/2012 | PDF SOLUTIONS INC | PDFS | 247,178 | 64,988 | 3,376,000 | 1,840,000 | $13.66 |
| 06/30/2012 | PDF SOLUTIONS INC | PDFS | 258,150 | 75,960 | 2,548,000 | 1,012,000 | $9.87 |
| 03/31/2012 | PDF SOLUTIONS INC | PDFS | 182,190 | 182,190 | 1,536,000 | 1,536,000 | $8.43 |
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