text: **Outstanding at 31 December 2012**
  Issued 
  Converted to ordinary shares 
  Forfeited 
  **Outstanding at 31 December 2013**
  Issued 
  Converted to ordinary shares 
  Forfeited 
  **Outstanding at 31 December 2014**
  
  The following tables summarise the RSUs issued and their related grant date, fair value and vesting conditions: 
  
  RSUs awarded during the year ended 31 December 2014: 
  
  Estimated Fair Value 
  (US$’000) 
  $1,611 
  123 
  172 
   680 
  $ 2,586 
  Grant Date 
  15 April 2014 
  5 May 2014 
  12 May 2014 
  30 May 2014 
  Number of RSUs 
  1,842,638 
  135,000 
  190,000 
  671,988 
  2,839,626 