Dec 13 (Reuters) - Xero Ltd XRO.AX :
* GRAHAM SMITH WILL STEP DOWN AS CHAIR OF BOARD ON 31 JANUARY 2020
* DAVID THODEY TO BE APPOINTED CHAIRMAN
* GRAHAM SMITH WILL RETIRE FROM XERO BOARD AT END OF XERO'S CURRENT FINANCIAL YEAR ENDING 31 MARCH 2020