Chen Timothy

• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings

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Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other

Notification date	Transaction date	Company	B/S Transaction type	Nb. shares Price Value	Number of shares	Price	Value
2026-05-29	2026-05-27	Ambiq Micro Inc (AMBQ)	S Sale	68,098 -18.9% 108.22 US$2,190,709	68,098 -18.9%	108.22	US$2,190,709
2026-05-29	2026-05-27	Ambiq Micro Inc (AMBQ)	S Sale	59,051 -5.7% 195.57 US$4,509,124	59,051 -5.7%	195.57	US$4,509,124
2026-05-29	2026-05-27	Ambiq Micro Inc (AMBQ)	S Sale	25,191 +43.8% 169.87 US$4,637,252	25,191 +43.8%	169.87	US$4,637,252
2026-05-29	2026-05-27	Ambiq Micro Inc (AMBQ)	S Sale	22,414 -31.8% 78.85 US$1,767,344	22,414 -31.8%	78.85	US$1,767,344
2026-05-27	2026-05-27	Ambiq Micro Inc (AMBQ)	PrS Proposed sale	70,592 79.99 US$5,646,654	70,592	79.99	US$5,646,654