Permanent TSB chief financial officer Glen Lucken is to leave the bank in the coming months, the group said on Tuesday.
A process to find a replacement for Mr Lucken is to commence immediately.
Mr Lucken is to return to the UK for family reasons and to pursue other interests.
Prior to his appointment as CFO in January 2012, Mr Lucken held senior finance and operations positions in Abbey National, Lloyds Banking Group, Barclaycard and OneSavings Bank.
In a statement, Mr Masding thanked Mr Lucken for the contribution he has made since joining the bank three years ago.
“It is with regret that Glen will be leaving the group. He has played a leading role in the successful transformation of the group during his time with us, most notably in the recent capital raise following the ECB’s Comprehensive Assessmentand associated stress tests. I would like to thank him for the enormous contribution that he has made to the group and wish him every success for the future,” said Mr Masding.
Permanent TSB also said on Tuesday that Andrew Walsh will assume a wider brief in the group legal counsel role. This position is now to become part of the bank's executive committee.
Mr Walsh joined Permanent TSB on a permanent basis last October, after working for the group as interim head of legal. Before joining the bank, he was a partner at A&L Goodbody.