Tokio Marine Holdings, Inc. announced that its board of directors resolved the proposed personnel changes to be made effective on June 1, 2017. The company approved the appointment Robert O'Leary as Executive Officer from current position of President & Chief Executive Officer of Philadelphia Consolidated Holding Corp. Mr. O'Leary will continue to serve as President & Ch ief Executive Officer of Philadelphia Consolidated Holding Corp. The company also approved Christopher Williams as Executive Officer from current position of Chief Executive Officer of HCC Insurance Holdings, Inc. Mr. Williams will continue to serve as Chief Executive Officer of HCC Insurance Holdings, Inc.