Tor Olav Troim has added a third US public company to his empire with the successful $52.4m listing of Borr Drilling in New York.

Jack-up rig specialist Borr becomes the first offshore company to list in the US in half a decade, joining its major peers on the New York Stock Exchange.

Borr said this morning its underwriters had exercised their full over-allotment option, meaning 5.75 million new shares have been printed at $9.30 each.

Goldman Sachs and DNB Markets were the initial banks on the ticket, with BTIG, Citigroup, Danske Markets and Evercore ISI added in the last round.

Borr, which has yet to identify how it will deploy the modest amount of new capital raised, joins fellow Troim companies Golar LNG and Golar LNG Partners in having a US listing.

Dry bulk venture 2020 Bulkers was also previously earmarked for a float stateside, but instead raised capital in Oslo this spring and moved up from the city’s over the counter market to the Oslo Axess.

Schlumberger Oilfield Holdings will see its stake fall slightly to 13.7% following the listing, while Troim's stake will dip to 8% and the Allan & Gill Gray Foundation's to 4.8%.

Borr will boast a fleet of 30 premium jack-up rigs by the end of 2020. It lists its five top customers as NDC, TAQA, Perenco, Total and Tulip.

Troim carries a strong reputation in the capital markets from his time with the John Fredriksen system, where he was involved in a number of listings and was the key figure with investors.

Troim, a director of tanker and terminal firm Stolt-Nielsen, was once an equity portfolio manager with Storebrand and spent a period as chief executive of DNO before teaming up with Fredriksen.