WHITE MTNS INS GROUP LTD

Ticker: WTM CUSIP: G9618E107 Class: COM

Fortitude Family Office, LLC's Holding History (CIK: 0001950506)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 20 Value ($000) $42 Avg Close $1955.46 Range $1648.00 - $2143.25

Q3 2025

Shares 21 Value ($000) $35 Avg Close $1784.36 Range $1659.17 - $1880.11

Q2 2025

Shares 21 Value ($000) $38 Avg Close $1778.53 Range $1678.87 - $1937.23

Q1 2025

Shares 19 Value ($000) $37 Avg Close $1882.39 Range $1803.96 - $1993.86

Q4 2024

Shares 19 Value ($000) $37 Avg Close $1889.39 Range $1708.50 - $2023.00

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	20	$42	$1955.46	$1648.00 - $2143.25
Q3 2025	21	$35	$1784.36	$1659.17 - $1880.11
Q2 2025	21	$38	$1778.53	$1678.87 - $1937.23
Q1 2025	19	$37	$1882.39	$1803.96 - $1993.86
Q4 2024	19	$37	$1889.39	$1708.50 - $2023.00