Sept 12 (Reuters) - Platinum Investment Management Ltd PTM.AX :
* INTENDS TO EXTEND ON-MARKET SHARE BUY-BACK FOR UP TO 10 PERCENT OF CO'S ISSUED SHARE CAPITAL FOR FURTHER OF UP TO 12-MONTHS
* ANY BUY-BACK WILL BE FUNDED FROM PTM'S EXISTING CASH FLOWS
* PTM HAS APPOINTED CREDIT SUISSE EQUITIES (AUSTRALIA) LIMITED TO ACT AS ITS BROKER