CALGARY — Suncor Energy, Canada's biggest oilsands player, has posted a net loss of $2 billion for the final three months of 2015 as it was walloped by the steep drop in crude prices. In addition to the oil price collapse, Suncor's bottom line was dragged down by nearly $1.6 billion in impairment charges and a $382 million foreign exchange loss related to its U.S. dollar-denominated debt. A year earlier, it posted a net profit of $84 million. Stripped of unusual items, Suncor's operating loss amounted to $26 million, compared with profits of $386 million a year earlier. Company-wide output grew to 582,900 barrels of oil equivalent a day during the fourth-quarter from 557,600 barrels during the prior year. Suncor has ratcheted down its spending plans for 2016, with a capital budget of between $6 billion and $6.5 billion compared with the $6.7 billion to $7.3 billion range it set in November. Suncor President & CEO Steve Williams talks to shareholders before his speech during Suncor Energy's annual general meeting in Edmonton on April 29, 2014. (Canadian Press photo) The company is assuming a U.S. benchmark crude price of US$39 a barrel for 2016. In October, Suncor launched a hostile bid for Canadian Oil Sands, whose sole asset is a 37 per cent stake in the Syncrude oilsands mine. Suncor has a 12 per cent interest and has said it can improve operations at the glitch-prone mine if it has a larger share of it. After months of waging a bitter takeover battle, the two sides came to an agreement in January. Suncor bumped up its offer to 0.28 of one of its own shares for each COS share, versus 0.25 previously. Shareholders have until Friday to accept the deal. "We are pleased that the Board of COS is supporting our offer," said CEO Steve Williams. "We believe that, working with the operator, we can drive real improvements in Syncrude's performance with a larger ownership interest, creating value for our shareholders."