Conditional trading in the power generator firm is due to start on Thursday, with the company pushing ahead with its listing in London despite two large IPOs there being cancelled last week.
The price guidance for the listing is 250 pence per share a bookrunner said on Wednesday, the bottom of a previously announced range of between 250 and 275 pence. The implied market capitalisation of the company after the listing is 1.7 billion pounds.
"It's bottom of the range but it's good it's being done," the source said.
"It's a sign that the London IPO market is open for the right companies."
Broadcasting masts firm Arqiva <IPO-ARGL.L> would have been this year's biggest listing in London but was postponed last Friday, as was the listing of supermarket supplier Bakkavor. Business services firm TMF scrapped its float on Oct. 27 in favour of a 1.75 billion euro (£1.5 billion) sale to private equity house CVC Capital Partners.
JP Morgan (>> JP Morgan Chase & Company) and Goldman Sachs (>> Goldman Sachs Group) are leading the ContourGlobal deal.
(Reporting by Dasha Afanasieva; Editing by Rachel Armstrong)