Brief: Tenaris To Commence A USD 600 Million First Tranche Of Its USD 1.2 Billion Share Buyback Program
June 6 (Reuters) - Tenaris SA TENR.MI: TENARIS TO COMMENCE A USD 600 MILLION FIRST TRANCHE OF ITS USD 1.2 BILLION SHARE BUYBACK PROGRAM Source text: ID:nGNX2kKR2d Further company coverage: TENR.MI ((Reuters.Briefs@thomsonreuters.com;))