Vestas dismissed as "speculation" a report in the U.K.'s Sunday Times that said the company was considering putting itself up for sale, Reuters reported.

The Sunday Times, which did not cite sources in the article, also said that Vestas had begun debt-restructuring talks with lenders.

Vestas' banks had given the company an "ultimatum" and demanded that it prepare a financial restructuring plan, according to the report.

A Vestas spokesman declined to comment on the specifics of the article, saying, "Vestas does not comment on speculation."

Vestas operates manufacturing facilities in Windsor, Brighton and Pueblo.

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