BANK of Ireland chief executive Richie Boucher will give evidence today at the banking inquiry.
His appearance this morning will be followed by that of former Ulster Bank chief executive and director Cormac McCarthy.
Solicitor Brian O'Donnell of Gorse Hill is also attending the meeting.
The latest Nexus phase of the inquiry involves senior bankers as it focuses on the banking systems practices that led up to the 2008 bank guarantee and the subsequent €64bn bailout of the banks two years later.
Senior bankers have so far given different versions of the events at Government buildings on the night of the bank guarantee but most agree it was a frantic evening.
Later this year former Taoiseach Brian Cowen will give evidence as will former regulators and government officials.
Jean-Claude Trichet spoke in Dublin on Thursday about the Irish financial crash and the role he played before and after the bubble burst in September 2008. Members of the Oireachtas inquiry questioned the former ECB president at an event staged in the Royal Hospital in Kilmainham, an arrangement designed to avoid any appearance of direct accountability of current, or even former, ECB officials to elected members of national legislatures.