Ironshore is preparing to list its shares on the US stock market, according to UK media reports.

The Bermuda-headquartered business was founded in 2006 following hurricanes Katrina, Wilma and Rita, but has expanded beyond property catastrophe insurance into other specialty lines.

In February it announced the acquisition of Assetinsure in Australia.

The company, owned by private equity interests, has not commented on the rumours, which have circulated for years.

Last month Ironshore set up an executive leadership committee charged with “formulating strategic direction to chart the vision for continued growth”.