Manx Telecom has appointed Paul Tierney as its new interim chief financial officer (CFO).The appointment follows replacement of Gary Lamb from CFO to chief executive officer on Wednesday.Meanwhile, the communication solutions provider has started to look for a permanent CFO.Tierney, who previously held roles at Lantmannen Unibake and Hearst Magazines, will join the company from 22 June.The group added he will not be a director or a member of the executive board.Shares in Manx were up 0.38% to 196.75p at 1150 BST on Thursday.