Reuters has an article indicating who has bought the shares sold by the Rosedal trust.
It should be noted that some of these investors (includes Quantum Partners LP, linked to George Soros - Google him if you don't know who he is) have non-trivial stakes in the company.
It is possible they are out for a quick buck, expecting the shares will rise in the next few months and then sell, or they may be looking to take a more active stance in the airline's governance and strategic direction in the future. Either way, these are not gentle passive investors content to just sit and wait forever. The fact they hold non-trivial stakes in the company means they will have direct access to the CEO whenever they want and will likely make their opinions known. This is likely to have an impact on how senior management feel able to act.
European airline Flybe's biggest shareholder bows out | Reuters