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> RBCN
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 03/31/2017 | Rubicon Technology, Inc. | RBCN | 5,934 | -1,113 | 5,000 | 1,000 | $0.84 |
| 12/31/2016 | Rubicon Technology, Inc. | RBCN | 7,047 | 1,113 | 4,000 | 0 | $0.57 |
| 09/30/2016 | Rubicon Technology, Inc. | RBCN | 5,934 | 5,934 | 4,000 | 4,000 | $0.67 |
| 06/30/2016 | Rubicon Technology, Inc. | RBCN | 5,934 | 234 | 4,000 | -2,000 | $0.67 |
| 03/31/2016 | Rubicon Technology, Inc. | RBCN | 5,934 | 234 | 4,000 | -2,000 | $0.67 |
| 12/31/2015 | Rubicon Technology, Inc. | RBCN | 5,700 | 700 | 6,000 | 1,000 | $1.05 |
| 09/30/2015 | Rubicon Technology, Inc. | RBCN | 5,000 | 5,000 | 5,000 | 5,000 | $1.00 |
| 06/30/2015 | Rubicon Technology, Inc. | RBCN | 0 | -1,421 | 0 | -6,000 | |
| 03/31/2015 | Rubicon Technology, Inc. | RBCN | 1,421 | 1,421 | 6,000 | 6,000 | $4.22 |
| 12/31/2014 | Rubicon Technology, Inc. | RBCN | 1,913 | 1,913 | 9,000 | 9,000 | $4.70 |
| 09/30/2014 | Rubicon Technology, Inc. | RBCN | 2,553 | 2,553 | 11,000 | 11,000 | $4.31 |
| 06/30/2014 | Rubicon Technology, Inc. | RBCN | 3,211 | 3,211 | 28,000 | 28,000 | $8.72 |
| 03/31/2014 | Rubicon Technology, Inc. | RBCN | 1,350 | 1,350 | 15,000 | 15,000 | $11.11 |
| 12/31/2013 | Rubicon Technology, Inc. | RBCN | 1,350 | 1,350 | 13,000 | 13,000 | $9.63 |
| 09/30/2013 | Rubicon Technology, Inc. | RBCN | 1,450 | 1,450 | 18,000 | 18,000 | $12.41 |
| 06/30/2013 | Rubicon Technology, Inc. | RBCN | 1,950 | 500 | 16,000 | 6,000 | $8.21 |
| 03/31/2013 | Rubicon Technology, Inc. | RBCN | 1,450 | -8,793 | 10,000 | -53,000 | $6.90 |
| 12/31/2012 | Rubicon Technology, Inc. | RBCN | 10,243 | -43,287 | 63,000 | -450,000 | $6.15 |
| 09/30/2012 | Rubicon Technology, Inc. | RBCN | 53,530 | -22,925 | 513,000 | -267,000 | $9.58 |
| 06/30/2012 | Rubicon Technology, Inc. | RBCN | 76,455 | 5,008 | 780,000 | 35,000 | $10.20 |
| 03/31/2012 | Rubicon Technology, Inc. | RBCN | 71,447 | 1,427 | 745,000 | 87,000 | $10.43 |
| 12/31/2011 | Rubicon Technology, Inc. | RBCN | 70,020 | 67,290 | 658,000 | 629,000 | $9.40 |
| 09/30/2011 | Rubicon Technology, Inc. | RBCN | 2,730 | 72 | 29,000 | -16,000 | $10.62 |
| 06/30/2011 | Rubicon Technology, Inc. | RBCN | 2,658 | -702 | 45,000 | -48,000 | $16.93 |
| 03/31/2011 | Rubicon Technology, Inc. | RBCN | 3,360 | -35,118 | 93,000 | -718,000 | $27.68 |
| 12/31/2010 | Rubicon Technology, Inc. | RBCN | 38,478 | -1,059,264 | 811,000 | -24,098,000 | $21.08 |
| 09/30/2010 | Rubicon Technology, Inc. | RBCN | 1,097,742 | 19,360 | 24,909,000 | -7,216,000 | $22.69 |
| 06/30/2010 | Rubicon Technology, Inc. | RBCN | 1,078,382 | 969,472 | 32,125,000 | 29,925,000 | $29.79 |
| 03/31/2010 | Rubicon Technology, Inc. | RBCN | 108,910 | -82,982 | 2,200,000 | -1,697,000 | $20.20 |
| 12/31/2009 | Rubicon Technology, Inc. | RBCN | 191,892 | -58,138 | 3,897,000 | 187,000 | $20.31 |
| 09/30/2009 | Rubicon Technology, Inc. | RBCN | 250,030 | 249,830 | 3,710,000 | 3,707,000 | $14.84 |
| 06/30/2009 | Rubicon Technology, Inc. | RBCN | 200 | 0 | 3,000 | 2,000 | $15.00 |
| 03/31/2009 | Rubicon Technology, Inc. | RBCN | 200 | -78 | 1,000 | 0 | $5.00 |
| 12/31/2008 | Rubicon Technology, Inc. | RBCN | 278 | 278 | 1,000 | 1,000 | $3.60 |
| 09/30/2008 | Rubicon Technology, Inc. | RBCN | 0 | -2,220 | 0 | -45,000 | |
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