Sept 25 (Reuters) - Glencore PLC:
* INCREASE AND EXTENSION OF SHARE BUY-BACK PROGRAMME
* ANNOUNCES AN INCREASE IN SIZE OF BUYBACK PROGRAMME BY AN ADDITIONAL AMOUNT OF UP TO $1 BILLION
* EXTENSION OF DURATION OF BUYBACK PROGRAMME UNTIL CLOSE OF DEALINGS ON 20 FEBRUARY 2019 Source text for Eikon: Further company coverage: