 
 
    Mandatorily redeemable convertible preferred stock at December 31, 2012 was as follows:
| Mandatorily Redeemable Convertible Preferred Stock | Shares Authorized | Shares Outstanding | Liquidation Preference | Book Value | ||||||||||||
| (Amounts in thousands) | ||||||||||||||||
| Series A | 564,083 | 557,339 | $ | 15,628 | $ | 15,605 | ||||||||||
| Series B | 520,839 | 515,836 | 14,045 | 13,865 | ||||||||||||
| Series C | 3,659,375 | 3,551,060 | 38,709 | 38,592 | ||||||||||||
| Series D | 3,125,000 | 2,430,054 | 22,510 | 20,323 | ||||||||||||
| Series E | 1,109,375 | 1,063,951 | 23,078 | 15,237 | ||||||||||||
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| 8,978,672 | 8,118,240 | $ | 113,970 | $ | 103,622 | |||||||||||
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