The former chairman of Irish Nationwide Building Society Michael P Walsh has admitted participation in "certain prescribed contraventions of financial services law" and has been fined €20,000 by the Central Bank.
Mr Walsh has been disqualified from managing a regulated financial service provider for three years and also received a reprimand from the Central Bank.
Irish Nationwide was wound up in 2011 at a cost of €5.4 billion to the taxpayer.
The breaches of financial services law by Irish Nationwide Building Society occurred during August 2004 to September 2008.
Michael P Walsh was the non-executive chairman of the former building society from May 2001 until February 2009. He was also a member of the building society's audit committee from 2001 until June 2008.
The Central Bank said the settlement with Mr Walsh concludes its inquiry against him.
But the bank emphasised the settlement relates to Mr Walsh alone and has no effect on the ongoing cases relating to Michael Fingleton, John Stanley Purcell, Tom McMenamin and Gary McCollum, which are still before the inquiry.
The Central Bank inquiry is investigating suspected breaches which relate to the way the former building society allegedly failed to process loans in line with policies, allegedly failed to vary loans in line with policies and allegedly failed to get valuations in line with policies.
They also relate to alleged failure to ensure commercial lending was in internal policies, alleged failure to ensure that reports on commercial lending were supplied to the board and that profit share agreements were in line with risk policies.
