share transfer (urgent help pls)

Sumit (Student) (45 Points)

21 September 2010  

A is share holder of xyz Pvt Ltd. company(unlisted). A sold his shares to c  without informing company and without executing share transfer deed.Now C want to sell these shares.What options are available to him.please throw ur valuable suggestions.Can c sell shares to D an existing shareholder and make the deed executed between A and D ?