The death has taken place of the co-founder of Irish house builder, Glenveagh Properties, Justin Bickle.
A lawyer, entrepreneur and investor, he was 51 years old and died suddenly while abroad.
Mr Bickle co-founded Glenveagh with Stephen Garvey and John Mulchahy in 2016.
"Our thoughts and deepest sympathy are with Justin's family and in particularly with his wife, Celeste, and his children," Mr Mulcahy and Mr Garvey said in a statement.
"We are also very conscious of his colleagues and friends many of whom work in Glenveagh today and some of whom are Glenveagh alumni who went on to work alongside him in his more recent ventures."
Mr Bickle served as Glenveagh's founding chief executive, bringing the company through a successful flotation on the stockmarkets in Dublin and London in 2017.
He remained with the business until 2019, before departing to pursue other interests.
"Even after departing as CEO, Justin remained a committed shareholder and supporter of our business," Mr Mulcahy and Mr Garvey said.
"We know that he took great satisfaction from the progress which Glenveagh has made on the journey which the three of us mapped all those years ago. We are deeply saddened that he will not be here to see his dreams realised. We will remember him in our thoughts and prayers."
In 2020 he co-founded pan-European real estate investment and asset manager, Eagle Street Partners, and continued as executive chairman and chief investment officer until his death.
"Our deepest sympathies are with his wife, Celeste, and his family," said Eagle Street co-founder Shane Scully.
"Providing comfort and support to Justin's family is our main priority at this time. Bob Crompton will assume the role of Interim Chairman at Eagle Street Partners during this difficult period."
"A trusted colleague and close friend to all at Eagle Street, Justin brought immense energy to the table and will be sorely missed."
Mr Bickle was also founder and managing partner of Postbridge Capital LLP, a private investment and capital advisory firm which he also set up in 2020.
He also served as vice-chairman of Limerick based aviation leasing business, Nordic Aviation Capital, and as chairman of TIO ICAV, a real estate investment fund regulated by the Central Bank.
Prior to establishing Glenveagh, Mr Bickle served as managing director of alternative investment manager, Oaktree Capital Management, where he worked for 12 years.
He also previously practised as a lawyer, becoming a partner in the restructuring group of US law firm Cadwalader, Wickersham & Taft LLP.
He also lectured for four years in business through a role as executive fellow at the London Business School and acted as chairman of the English National Ballet.