| Date | Open | Close | Volume |
| 2010-03-03 | 1.20 | 1.22 | 75600 |
| 2010-03-02 | 1.20 | 1.19 | 72700 |
| 2010-03-01 | 1.14 | 1.17 | 34400 |
| 2010-02-26 | 1.19 | 1.16 | 27400 |
| 2010-02-25 | 1.15 | 1.14 | 28500 |
| 2010-02-24 | 1.19 | 1.15 | 52100 |
| 2010-02-23 | 1.15 | 1.17 | 93600 |
| 2010-02-22 | 1.28 | 1.17 | 65000 |
| 2010-02-19 | 1.21 | 1.18 | 47200 |
| 2010-02-18 | 1.18 | 1.17 | 103900 |
| 2010-02-17 | 1.20 | 1.16 | 25600 |
| 2010-02-16 | 1.25 | 1.15 | 98200 |
| 2010-02-12 | 1.13 | 1.22 | 119300 |
| 2010-02-11 | 1.27 | 1.17 | 266400 |
| 2010-02-10 | 1.35 | 1.23 | 65900 |
| 2010-02-09 | 1.38 | 1.32 | 210000 |
| 2010-02-08 | 1.30 | 1.34 | 84100 |
| 2010-02-05 | 1.47 | 1.30 | 376100 |
| 2010-02-04 | 1.25 | 1.28 | 714800 |
| 2010-02-03 | 1.16 | 1.20 | 184200 |
| 2010-02-02 | 1.35 | 1.26 | 247900 |
| 2010-02-01 | 1.30 | 1.33 | 1962800 |
| 2010-01-29 | 1.19 | 1.21 | 229600 |
| 2010-01-28 | 1.31 | 1.18 | 160400 |
| 2010-01-27 | 1.39 | 1.20 | 149700 |
| 2010-01-26 | 1.17 | 1.19 | 431100 |
| 2010-01-25 | 1.40 | 1.10 | 392900 |
| 2010-01-22 | 1.56 | 1.22 | 653500 |
| 2010-01-21 | 1.24 | 1.47 | 2052300 |
| 2010-01-20 | 0.78 | 1.12 | 1152900 |
| 2010-01-19 | 0.81 | 0.78 | 78400 |
| 2010-01-15 | 0.85 | 0.78 | 27000 |
Other Companies: 05-23-2007 | Williams Coal Seam Gas Royalty Trust | 09-06-2007-1
TechTarget, Inc. | 01-26-2007-1 | BioForm Medical, Inc.