Exhibit 11.1

Redwood Trust, Inc.
Computation of Per Share Earnings

                     
        Three Months   Nine Months
        Ended   Ended
        September 30, 2002   September 30, 2002
       
 
Basic:
               
 
Average common shares outstanding
    15,730,182       14,879,883  
 
   
     
 
   
Total
    15,730,182       14,879,883  
 
   
     
 
 
Net Income
  $ 14,306,216     $ 39,327,257  
 
   
     
 
 
Per Share Amount
  $ 0.91     $ 2.64  
 
   
     
 
Diluted:
               
 
Average common shares outstanding
    15,730,182       14,879,883  
 
Net effect of dilutive stock options outstanding during the period — based on the treasury stock method
    510,012       485,469  
 
   
     
 
   
Total
    16,240,194       15,365,352  
 
   
     
 
 
Net Income
  $ 14,306,216     $ 39,327,257  
 
   
     
 
 
Per Share Amount
  $ 0.88     $ 2.56