Reynolds Group, the global packaging giant owned by New Zealand's richest person, Graeme Hart, went into the red last year, because of a greater level of impaired assets and higher raw material costs.
In a filing to the US Securities and Exchange Commission, Reynolds reported US$5 million ($7.3m) loss in 2018, against a US$439 million profit in the previous year.
The company said its net "other" expenses increased by US$201 million to US$279 million.
"The increase was due to an increase in asset impairment charges of US$195 million, primarily due to a goodwill impairment charge of $206 million at Graham Packaging, as well as an unfavourable change of US$22 million in unrealised gains and losses on derivatives, partially offset by a favorable change of US$19m gains and losses on sale of businesses," it said.
Reynolds' cost of sales increased by $364 million, or 4 per cent, mostly because of higher raw material, manufacturing and logistics costs.