*ARGO GROUP ANNOUNCES LEADERSHIP CHANGES
*ARGO GROUP INTERNATIONAL HOLDINGS - APPOINTS CHRIS DONAHUE AS CHIEF EXECUTIVE OFFICER
*ARGO GROUP INTERNATIONAL HOLDINGS - DONAHUE SUCCEEDS JESSICA BUSS AS CEO
((Reuters Investor Briefs; email: reutersinvestor.briefs@thomsonreuters.com))
Source Date/Time = 24-MAR-202513:49:00.13 GMT