Groupon, Inc. today announced financial results for its fourth quarter ended December 31, 2011.

Revenue increased 194% to $506.5 million in the fourth quarter 2011, compared to $172.2 million in the fourth quarter 2010. The unfavorable impact from year-over-year changes in foreign exchange rates throughout the quarter was $3.5 million. Gross billings, which reflects the gross amounts collected from customers for Groupons sold, excluding any applicable taxes and net of estimated refunds, increased 201% to $1.25 billion in the fourth quarter 2011, compared with $415.3 million in the fourth quarter 2010.

"Groupon had a strong fourth quarter and we finished 2011 having helped 250,000 local merchants across 47 countries grow their businesses while saving Groupon customers billions of dollars," said Andrew Mason, CEO and Co-Founder of Groupon. "We will continue to invest in new services and tools that help our merchant partners be more successful and drive local commerce around the world."

Operating income was $15.0 million in the fourth quarter 2011, compared with a loss from operations of $336.1 million in the fourth quarter 2010. This marks the company's first quarter of operating profitability since Groupon began its international operations in the second quarter of 2010. The favorable impact from year-over-year changes in foreign exchange rates throughout the quarter was $11.6 million. Consolidated segment operating income (CSOI), which is a non-GAAP financial measure that excludes the impact of stock-based compensation and acquisition-related charges, improved to a gain of$48.0 million in the fourth quarter, compared with a loss of $143.4 million in the fourth quarter 2010. Fourth quarter 2011 operating results included losses of over $40 million principally from less mature markets within the international segment.

Operating cash flow increased 226% to $169.1 million for fourth quarter 2011, compared with $51.9 million for fourth quarter 2010. Free cash flow, which is a non-GAAP financial measure that reflects cash flow from operations less purchases of property and equipment, increased 258% to $155.1 million for the three months ended December 31, 2011, compared with $43.3 million for the three months ended December 31, 2010. At the end of the quarter, Groupon had $1.1 billion in cash and cash equivalents and no long-term debt.

Fourth quarter 2011 net loss attributable to common stockholders decreased by 89% to $42.7 million, or a loss of $0.08 per share, from a net loss attributable to stockholders of $378.6 million, or a loss of $1.08 per share, in fourth quarter 2010. Pro-forma net income attributable to common stockholders for the fourth quarter improved to a loss of $9.8 million, or a pro-forma loss of $0.02 per share, from a prior year pro-forma net loss attributable to common stockholders of $185.8 million, or a pro-forma loss per share of $0.53. Pro-forma net income is a non-GAAP financial measure that excludes the impact of stock-based compensation and acquisition-related charges. The pro-forma loss of $0.02 per share includes $34.8 million of tax expense, an effective tax rate of approximately 1,600%, related to profitability in certain international countries as well as additional income tax provisions related to the establishment of the company's international headquarters in Switzerland. This resulted in an unusually high effective tax rate as compared to the company's current average statutory rate of approximately 33%.

Full-Year 2011

Revenue increased 419% to $1.6 billion in 2011, compared with $312.9 million in revenue in 2010. The favorable impact on revenue from year-over-year changes in foreign exchange rates throughout the year was $43.4 million.

Gross billings increased 437% to $4.0 billion in 2011, compared with $745.3 million in gross billings in 2010.

Full year 2011 loss from operations was $203.4 million, compared with the loss from operations of $420.3 million in 2010. The unfavorable impact from year-over-year changes in foreign exchange rates throughout the year was $9.8 million. Consolidated segment operating losses improved to a loss of$114.3 million in 2011 from a loss of $181.0 million in 2010.

Operating cash flow increased 234% to $290.5 million in 2011, compared with $86.9 million in 2010. Free cash flow increased 242% to $246.6 millionfor the twelve months ended December 31, 2011, compared with $72.2 million for the twelve months ended December 31, 2010.

Net loss attributable to common stockholders decreased to $350.8 million in 2011, or a loss of $0.97 per share, from a net loss attributable to common stockholders of $456.3 million, or a loss of $1.33 per share, in 2010. Pro-forma net loss attributable to common stockholders for the full year resulted in a loss of $261.8 million, or a pro-forma loss of $0.72 per share, from a prior year pro-forma net loss attributable to common stockholders of $217.0 million, or a pro-forma loss per share $0.63. The pro-forma loss per share of $0.72 includes $44.3 million of tax expense related to profitability in certain international countries as well as additional income tax provisions related to the establishment of the company's international headquarters inSwitzerland.