http://www.sec.gov/Archives/edgar/data/1416265/000114036113019880/form10q.htmIt's just a slight bit more complicated to read since it is split into two companies with separate financials (on the same filing) now. In the below, I combined the totals from both companies.
Q2 2009 - Loss before other income: $2,617,400
Q3 2009 - Loss before other income: $2,289,092
Q4 2009 - Loss before other income: $2,868,908
Q1 2010 - Loss before other income: $2,747,524
Q2 2010 - Loss before other income: $2,787,434
Q3 2010 - Loss before other income: $2,404,217
Q4 2010 - Loss before other income: $2,566,804
Q1 2011 - Loss before other income: $3,097,283
Q2 2011 - Loss before other income: $2,837,560
Q3 2011 - Loss before other income: $2,837,290
Q4 2011 - Loss before other income: $3,519,037
Q1 2012 - Loss before other income: $4,690,488
Q2 2012 - Loss before other income: $3,545,603
Q3 2012 - Loss before other income: $4,448,773
Q4 2012 - Loss before other income: $4,764,596
Q1 2013 - Loss before other income: $4,504,040Prosper currently has (as of March 31st, 2013) a combined "Cash and Cash Equivalents" of $19,983,593.
Q1 2013 - Combined Net Revenue: $1,631,526
Q1 2013 - Combined Operating Expenses: $6,135,566
In Q1 2013, Prosper spent 96% of their "Net Revenue" on "Marketing and Advertising" alone.