JLL names Deirdre Costello CEO of Ireland business effective January 2027

Jones Lang LaSalle named Deirdre Costello as CEO Ireland effective January 2027. Costello currently leads Leasing Advisory and has over 30 years at the firm. John Moran will shift to Chairman, Ireland in January 2027, stepping down as CEO Ireland. Dan O'Connor will become Head of Capital Markets and Hotels, Ireland on Sept. 1, 2026.