7. Administrative expenses
Administrative expenses comprise the following:
| 
       in CHF 1 000  | 
    
       
  | 
    
       01.01.–30.09.2022  | 
    
       
  | 
    
       01.01.–30.09.2021  | 
  
| 
       Investment manager  | 
    
       
  | 
    
       
  | 
    
       
  | 
    
       
  | 
  
| 
       – Management fees (incl. VAT)  | 
    
       
  | 
    
       27 806  | 
    
       
  | 
    
       38 537  | 
  
| 
       Personnel  | 
    
       
  | 
    
       
  | 
    
       
  | 
    
       
  | 
  
| 
       – Board of Directors remuneration  | 
    
       
  | 
    
       1 130  | 
    
       
  | 
    
       998  | 
  
| 
       – Wages and salaries  | 
    
       
  | 
    
       236  | 
    
       
  | 
    
       192  | 
  
| 
       – Social insurance contributions and duties  | 
    
       
  | 
    
       97  | 
    
       
  | 
    
       79  | 
  
| 
       
  | 
    
       
  | 
    
       29 269  | 
    
       
  | 
    
       39 806  | 
  
The remuneration model of BB Biotech AG is determined by the Board of Directors.
Since 2014 the remuneration paid to the investment manager is based upon a 1.1% p.a. all-in fee on the average market capitalization without any additional fixed or performance-based elements of compensation. The compensation of the Board of Directors consists since 2014 of a fixed compensation.