On November 30, 2020, White Mountains Insurance Group, Ltd. announced that J. Brian Palmer, Chief Accounting Officer (“CAO”), has informed the Company of his decision to retire from the Company on May 14, 2021. After his retirement as CAO, Mr. Palmer is expected to become an advisor to senior management. On November 30, 2020, the Company also announced that Michaela Hildreth will become the Chief Accounting Officer of the Company on May 14, 2021. Ms. Hildreth, 52, has served as the General Auditor of White Mountains Capital since 2006. She joined the Company in 2003 and has served in a variety of accounting and auditing-related positions with the Company and its subsidiaries. Prior to joining the Company, Ms. Hildreth spent 13 years with PricewaterhouseCoopers.