| Schedule of Common Stock Activity |
The table below summarizes our common stock activity for the years ended December 31, 2013, 2012 and 2011. | | | | | | | | | | | | | | Shares Issued | | Shares Held in Treasury | | Shares Held in Reserve | | Total | Balance, December 31, 2010 | 444,883,356 |
| | (448,158 | ) | | 44,258,432 |
| | 488,693,630 |
| Resolution of claims | 44,258,432 |
| | — |
| | (44,258,432 | ) | | — |
| Shares issued under Calpine Equity Incentive Plans | 1,327,027 |
| | (139,846 | ) | | — |
| | 1,187,181 |
| Share repurchase program | — |
| | (8,137,073 | ) | | — |
| | (8,137,073 | ) | Balance, December 31, 2011 | 490,468,815 |
| | (8,725,077 | ) | | — |
| | 481,743,738 |
| Shares issued under Calpine Equity Incentive Plans | 2,026,285 |
| | (284,376 | ) | | — |
| | 1,741,909 |
| Share repurchase program | — |
| | (26,436,677 | ) | | — |
| | (26,436,677 | ) | Balance, December 31, 2012 | 492,495,100 |
| | (35,446,130 | ) | | — |
| | 457,048,970 |
| Shares issued under Calpine Equity Incentive Plans | 5,345,956 |
| | (2,323,828 | ) | | — |
| | 3,022,128 |
| Share repurchase program | — |
| | (31,032,110 | ) | | — |
| | (31,032,110 | ) | Balance, December 31, 2013 | 497,841,056 |
| | (68,802,068 | ) | | — |
| | 429,038,988 |
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