Following the sale, the firm holds a 21.6 per cent interest in the business.
Doughty Hanson sold the stake at a price of 265 pence per share, which is a discount to yesterday’s closing price of 282 pence.
HellermanTyton was floated at a price of 195 pence per share in March this year with Doughty collecting proceeds of nearly £180m from the IPO, which valued the business at £420m.
Doughty dropped its stake from 95.5 per cent to 46.1 per cent through the offering.
It was the sixth investment from the firm’s €1.6bn Doughty Hanson & Co Fund IV.
The IPO came after the firm twice failed to exit the company through a private sale, according to Sky News.
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