MASTERBRAND INC

Ticker: MBC CUSIP: 57638P104 Class: COMMON STOCK

K2 PRINCIPAL FUND, L.P.'s Holding History (CIK: 0001461790)

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

Q4 2025

Shares 13,516 Value ($000) $149 Avg Close $11.71 Range $9.33 - $13.61

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	13,516	$149	$11.71	$9.33 - $13.61