NORTHWEST NAT HLDG CO

Ticker: NWN CUSIP: 66765N105 Class: Common Stock

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC's Holding History (CIK: 0001644956)

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

Q4 2025

Shares 575,198 Value ($000) $26,885 Avg Close $46.64 Range $43.64 - $49.63

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	575,198	$26,885	$46.64	$43.64 - $49.63