UPDATE 1-Japan's Tsuruha mulls sale after proxy battle with Oasis - Bloomberg News

(Adds details from Bloomberg News report in paragraph 2, background in paragraph 3 and 4)

Nov 15 (Reuters) - Japan's Tsuruha Holdings Inc is exploring selling the entire company for about $4 billion or even more, after a proxy battle with activist investor Oasis Management, Bloomberg News reported on Wednesday, citing people familiar with the matter.

Tsuruha is working with an adviser on the potential transaction and has reached out to some private equity firms to gauge their interest, the report said, adding that it was looking to collect non-binding bids from potential investors as soon as next week.

The company won a proxy battle in August against activist shareholder Oasis Management, which was seeking to reshuffle the board of directors. Tsuruha's shareholders had approved of 10 candidates nominated by the company and rejected five outside director nominees backed by the investor.

Oasis had argued that the current board dominated by founding family members could impede the company from fairly evaluating consolidation opportunities.

(Reporting by Gnaneshwar Rajan in Bengaluru; Editing by Janane Venkatraman and Rashmi Aich)