Feb 26 (Reuters) - Vocus Group Ltd VOC.AX :
* GROUP CEO GEOFF HORTH WILL BE LEAVING COMPANY.
* ROLE OF INTERIM GROUP CEO WILL BE ASSUMED BY MICHAEL SIMMONS
* REITERATES ITS FULL YEAR FY18 GUIDANCE
Feb 26 (Reuters) - Vocus Group Ltd VOC.AX :
* GROUP CEO GEOFF HORTH WILL BE LEAVING COMPANY.
* ROLE OF INTERIM GROUP CEO WILL BE ASSUMED BY MICHAEL SIMMONS
* REITERATES ITS FULL YEAR FY18 GUIDANCE