<span item_type="fundamental" item_id="e6c901d093d471c8946f3d1a1cd4bb0e" counter_id="ST/US/WTM" env="prod"></span><span item_type="announcement" item_id="613120419401438593" env="prod"></span><p>Revenue: As of FY2025 Q4, the actual value is USD 1.604 B.</p><p>EPS: As of FY2025 Q4, the actual value is USD 327.23.</p><p></p><h4>Consolidated Portfolio Returns</h4><ul><li>Total consolidated portfolio return was 2.3% for the three months ended December 31, 2025, compared to -2.3% for the three months ended December 31, 2024. For the year ended December 31, 2025, it was 9.1%, compared to 6.9% for the year ended December 31, 2024.<span class="superscript" item_id="0" item_type="announcement_file" value="1" url="https://www.sec.gov/Archives/edgar/data/776867/000162828026005947/wtm-20260206.htm"></span></li><li>Total consolidated portfolio return excluding MediaAlpha was 2.0% for the three months ended December 31, 2025, compared to -0.4% for the three months ended December 31, 2024. For the year ended December 31, 2025, it was 8.9%, compared to 6.5% for the year ended December 31, 2024.<span class="superscript" item_id="0" item_type="announcement_file" value="1" url="https://www.sec.gov/Archives/edgar/data/776867/000162828026005947/wtm-20260206.htm"></span></li></ul><h4>Equity Portfolio Returns</h4><ul><li>Total equity portfolio return was 3.9% for the three months ended December 31, 2025, and 13.1% for the year ended December 31, 2025.<span class="superscript" item_id="0" item_type="announcement_file" value="1" url="https://www.sec.gov/Archives/edgar/data/776867/000162828026005947/wtm-20260206.htm"></span></li><li>Total equity portfolio return excluding MediaAlpha was 3.2% for the three months ended December 31, 2025, and 13.0% for the year ended December 31, 2025.<span class="superscript" item_id="0" item_type="announcement_file" value="1" url="https://www.sec.gov/Archives/edgar/data/776867/000162828026005947/wtm-20260206.htm"></span></li></ul><h4>Bamboo Segment (MGA Pre-Tax Income/Loss)</h4><ul><li>Bamboo’s consolidated GAAP pre-tax income (loss) was $2.7 million for October 1, 2025 - December 5, 2025, $9.9 million for the three months ended December 31, 2024, $40.1 million for January 1, 2025 - December 5, 2025, and $32.7 million for the year ended December 31, 2024.<span class="superscript" item_id="0" item_type="announcement_file" value="1" url="https://www.sec.gov/Archives/edgar/data/776867/000162828026005947/wtm-20260206.htm"></span></li><li>Pre-tax income (loss) from the Bamboo captive removed was - $1.7 million for October 1, 2025 - December 5, 2025, $0.9 million for the three months ended December 31, 2024, $1.0 million for January 1, 2025 - December 5, 2025, and - $1.0 million for the year ended December 31, 2024.<span class="superscript" item_id="0" item_type="announcement_file" value="1" url="https://www.sec.gov/Archives/edgar/data/776867/000162828026005947/wtm-20260206.htm"></span></li><li>MGA pre-tax income (loss) was $1.0 million for October 1, 2025 - December 5, 2025, $10.8 million for the three months ended December 31, 2024, $41.1 million for January 1, 2025 - December 5, 2025, and $31.7 million for the year ended December 31, 2024.<span class="superscript" item_id="0" item_type="announcement_file" value="1" url="https://www.sec.gov/Archives/edgar/data/776867/000162828026005947/wtm-20260206.htm"></span></li></ul><h4>Outlook / Guidance</h4><p>No specific forward-looking statements or guidance were provided in the reference material.<span class="superscript" item_id="0" item_type="announcement_file" value="1" url="https://www.sec.gov/Archives/edgar/data/776867/000162828026005947/wtm-20260206.htm"></span></p>

White Mountains | 8-K: FY2025 Q4 Revenue: USD 1.604 B