WHITE MOUNTAINS INSURANCE GROUP LTD FILES (8-K) Disclosing Other Events

ITEM 8.01 Other Events.

On December 21, 2022, White Mountains Insurance Group, Ltd. ("White Mountains")
announced that it has led an investor group in capitalizing Outrigger Re Ltd., a
reinsurance sidecar sponsored by White Mountains's specialty property and
casualty reinsurance and insurance subsidiary, Ark Insurance Holdings Limited
("Ark"), for the purpose of reinsuring business written by Ark's Bermuda
subsidiary. A copy of the press release is attached as Exhibit 99.1 to this
Current Report on Form 8-K and is incorporated herein by reference.

Exhibits

Exhibit No.       Description
          99.1      Press Release, dated December     21    , 2022




                                       2

--------------------------------------------------------------------------------