Insider Trading — QuoTrend

HSIEH Wen Hsuan – Insider Transactions

Ticker	Owner	Relationship	Date	Transaction	Cost	#Shares	Value ($)	#Shares Total	SEC Form 4
AMPX	HSIEH Wen Hsuan	Director	Mar 12 '26	Sale	18.44	413,146	7,620,033	44,444	Mar 13
AMPX	HSIEH Wen Hsuan	Director	Mar 12 '26	Option Exercise	2.61	270,251	705,355	457,590	Mar 13
AMBQ	HSIEH Wen Hsuan	Director	Feb 18 '26	Option Exercise	12.60	238,931	3,010,531	633,920	Feb 20
DM	HSIEH Wen Hsuan	Director	Apr 02 '25	Option Exercise	0.00	28,571	0	42,538	Apr 04
DM	HSIEH Wen Hsuan	Director	Jun 06 '24	Option Exercise	0.00	6,422	0	13,967	Jun 10