TOKYO (Reuters) - Sony Corp said on Monday that it would sell all the shares it owns in Japanese online game provider DeNA Co Ltd to Nomura Securities.

Sony said in a statement that it expected to post a gain of 40.9 billion yen ($437 million), to be recorded as operating income in the fourth quarter of the fiscal year that ends this month.

Nomura Securities is a unit of Nomura Holdings Inc. ($1 = 93.4450 Japanese yen)

(Reporting by Tokyo Newsroom; Editing by Chris Gallagher)