Exhibit 11.1

Redwood Trust, Inc.
Computation of Per Share Earnings
                     
        Three Months   Three Months
        Ended   Ended
        March 31, 2002   March 31, 2001
       
 
Basic:
               
 
Average common shares outstanding
    13,658,443       8,838,964  
 
   
     
 
   
Total
    13,658,443       8,838,964  
 
   
     
 
 
Net Income
  $ 11,218,789     $ 6,679,775  
 
   
     
 
 
Per Share Amount
  $ 0.82     $ 0.76  
 
   
     
 
Diluted:
               
 
Average common shares outstanding
    13,658,443       8,838,964  
 
Net effect of dilutive stock options outstanding during the period — based on the treasury stock method
    418,962       226,257  
 
   
     
 
   
Total
    14,077,405       9,065,220  
 
   
     
 
 
Net Income
  $ 11,218,789     $ 6,679,775  
 
   
     
 
 
Per Share Amount
  $ 0.80     $ 0.74