Quarterly report pursuant to Section 13 or 15(d)

CONDENSED BALANCE SHEETS

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CONDENSED BALANCE SHEETS (USD $)
In Thousands
Jun. 30, 2011
Dec. 31, 2010
Current assets:    
Cash and cash equivalents $ 42,952 $ 8,877
Available-for-sale securities 236,145 168,418
Prepaid expenses and other current assets 3,472 2,631
Total current assets 282,569 179,926
Property and equipment, net 5,168 4,534
Other assets 2,130 2,235
Total assets 289,867 186,695
Current liabilities:    
Accounts payable 1,461 1,403
Accrued compensation 3,352 4,811
Other accrued liabilities 2,552 4,357
Deferred revenue 105 0
Capital lease obligations 315 755
Total current liabilities 7,785 11,326
Long-term portion of capital lease obligations 0 45
Long-term portion of deferred rent 9,269 9,056
Other long-term liabilities 128 137
Commitments and contingencies    
Stockholders' equity:    
Preferred stock, $0.001 par value; 10,000,000 shares authorized; none issued and outstanding as of June 30, 2011 and December 31, 2010    
Common stock, $0.001 par value; 100,000,000 shares authorized; 71,203,011 and 52,271,184 shares issued and outstanding as of June 30, 2011 and December 31, 2010, respectively 71 52
Additional paid-in capital 890,243 741,551
Accumulated other comprehensive income (loss) 60 (38)
Accumulated deficit (617,689) (575,434)
Total stockholders' equity 272,685 166,131
Total liabilities and stockholders' equity $ 289,867 $ 186,695