Independent fund and corporate administration provider Sanne Group is set to raise £141.6m in a deal that values it at £232m when it lists on the London Stock Exchange on 1 April.
Current owner Inflexion said the IPO had generated a realised and unrealised return of 3.7 times its original investment.
Shares in Sanne, for whom Investec acted as adviser, will be priced at 200p per share. Inflexion will retain 11 per cent of the company, worth £26m. Senior management will be left with a 23.6 per cent share.
Sanne's chief executive, Dean Godwin, said the IPO will allow the company to accelerate its growth plans.
Additionally, as our business model is people-led and reliant on a high-touch approach, the IPO will enable us to attract and retain the highest quality of staff. We are looking forward to life as a listed company.
The news comes less than a day after Webuyanycar.com owner BCA, advised by Cenkos, was sold to Haversham for £1.2bn.
On Monday online payments provider Optimal Payments bought rival Skrill in a €1.1bn (£800m) reverse takeover, which pushed the combined business straight into the FTSE 250.
The company said it was planning to raise £451m through a five-for-three rights issue, which was underwritten by Canaccord Genuity, Deutsche Bank and BMO Capital Markets.