Shares in diversified healthcare services Uniphar jumped as much as 6% today on the company's first day of trade on Euronext Dublin's Growth index.
Uniphar was listed today through the admission of 269.2 million shares.
Its listing price was set at €1.15 per share, giving it a market capitalisation of about €309.6m.
Headquartered in Dublin, Uniphar has a workforce of more than 2,000 and it active in Ireland, the UK and the Benelux countries.
Uniphar's chief executive Ger Rabbette said its listing on the Euronext Growth market will help fuel its strategy which will see the company doubling EBITDA over the next five years.
"It will also allow us to attract new investors and capital from across Europe," he added.
The chief executive of Euronext Dublin, Daryl Byrne, said the story of Unphar's growth and success is yet another fantastic example of Irish innovation in the pharmaceutical sector.
"We look forward to celebrating the future successes that come from being a Euronext-listed company," Mr Byrne added.
The company's shares had gained 4.3% in afternoon trade in Dublin.