AMPRIUS TECHNOLOGIES INC

Ticker: AMPX CUSIP: 03214Q108 Class: Common Stock

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

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

Q4 2025

Shares 984,906 Value ($000) $7,771 Avg Close $11.43 Range $7.71 - $16.03

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	984,906	$7,771	$11.43	$7.71 - $16.03