Broker Peel Hunt said it raised GBP112mln ahead of its debut on London’s AIM market next week.
The shares were placed with investors at 228p each, valuing the group at GBP280mln.
A total of GBP40mln will be ploughed back into the business to support its next phase of growth. Around GBP72mln will be banked by ‘selling shareholders’ to fund personal tax liabilities arising from the corporate restructuring ahead of admission on September 29, the group said.
Chief executive Steve Fine said: “We have been delighted with the positive reception to our IPO, with strong support from institutional investors, as well as retail investors who were able to participate through intermediaries using our REX technology platform.
“This is testament to the high-quality business we have built over the past decade, which puts us in prime position to take advantage of numerous opportunities ahead and continue our strong growth momentum.”