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> NADX
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2010 | NATIONAL DENTEX CORP /MA/ | NADX | 182,151 | -7,200 | 3,069,000 | 1,198,000 | $16.85 |
| 03/31/2010 | NATIONAL DENTEX CORP /MA/ | NADX | 189,351 | -1 | 1,871,000 | -41,000 | $9.88 |
| 12/31/2009 | NATIONAL DENTEX CORP /MA/ | NADX | 189,352 | 2,901 | 1,912,000 | 323,000 | $10.10 |
| 09/30/2009 | NATIONAL DENTEX CORP /MA/ | NADX | 186,451 | -1 | 1,589,000 | 375,000 | $8.52 |
| 06/30/2009 | NATIONAL DENTEX CORP /MA/ | NADX | 186,452 | 1,240 | 1,214,000 | 494,000 | $6.51 |
| 03/31/2009 | NATIONAL DENTEX CORP /MA/ | NADX | 185,212 | 17,069 | 720,000 | -45,000 | $3.89 |
| 12/31/2008 | NATIONAL DENTEX CORP /MA/ | NADX | 168,143 | 0 | 765,000 | -261,000 | $4.55 |
| 09/30/2008 | NATIONAL DENTEX CORP /MA/ | NADX | 168,143 | 166,018 | 1,026,000 | 857,858 | $6.10 |
| 06/30/2008 | NATIONAL DENTEX CORP /MA/ | NADX | 2,125 | 99 | 168,143 | 11,000 | $79.13 |
| 03/31/2008 | NATIONAL DENTEX CORP /MA/ | NADX | 2,026 | 2,026 | 157,143 | 157,143 | $77.56 |
| 12/31/2007 | NATIONAL DENTEX CORP /MA/ | NADX | 2,480 | 2,480 | 153,869 | 153,869 | $62.04 |
| 03/31/2002 | NATIONAL DENTEX CORP /MA/ | NADX | 1,159 | -28,841 | 44,072 | -390,928 | $38.02 |
| 12/31/2001 | NATIONAL DENTEX CORP /MA/ | NADX | 1,162 | -28,838 | 48,072 | -386,928 | $41.37 |
| 09/30/2001 | NATIONAL DENTEX CORP /MA/ | NADX | 47,072 | 17,072 | 989,000 | 554,000 | $21.01 |
| 06/30/2001 | NATIONAL DENTEX CORP /MA/ | NADX | 47,072 | 17,072 | 998,000 | 563,000 | $21.20 |
| 03/31/1999 | NATIONAL DENTEX CORP /MA/ | NADX | 30,000 | 30,000 | 435,000 | 435,000 | $14.50 |
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