Dentsu to buy back up to $580 mln of own shares

TOKYO, May 12 (Reuters) - Dentsu Inc (4324.T: Quote, Profile, Research, Stock Buzz), Japan's biggest advertising firm, said on Monday it will buy back up to 60 billion yen ($580.4 million) worth of its own shares.

Dentsu said it will buy back the equivalent to up to 10.78 percent of its shares outstanding between May 13 and June 10. ($1=103.38 Yen) (Reporting by Aiko Hayashi)