RTÉ News understands that a group of senior executives have secured a management-led buyout of Merrion Capital.
The deal is understood to be worth in excess of €10 million, with a value described as being in the "mid-teens".
35% of the shares will change hands under the buyout, while staff will hold the majority of the stock.
The deal will see New York-based securities firm Allen & Co sell its minority stake in the company.
Recent reports suggested that Cantor Fitzgerald and Davy were in line to takeover Merrion.
The sale will be Merrion's fourth change of ownership in a decade.