AMBQ

Ambiq Micro, Inc.$60.74+1.13 (+1.90%)

Prev Close$59.61·MCap$1.44B·P/E—·Vol269.6K·Yield—

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Buys (12M)

$0.00

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Sells (12M)

$33.99M

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Net Activity

Net Seller

$33.99M

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Active Insiders

last 12 mo

Over the past 12 months, insider activity at Ambiq Micro, Inc. (AMBQ) has been exclusively selling, with 0 insider purchases totaling $0.00 and 17 insider sales totaling $33.99M. The most recent insider transaction was by ZHANG KER (director), who sold $634.4K worth of shares on Sep 15, 2026. Ambiq Micro, Inc. operates in the Technology sector, within the Semiconductors industry, with a market cap of $1.44B.

AMBQ Insider Trading Activity

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Sep 15, 2026	ZHANG KER	director	Sell	10,000	$63.44	$634.4K	21,266-32%
Sep 15, 2026	Esaka Fumihide	director, officer: Chief Executive Officer	Sell	63,500	$62.70	$3.98M	470,175
Sep 15, 2026	Chen Sean Chihhsiang	officer: President and COO	Sell	15,000	$60.14	$902.1K	132,675
Sep 9, 2026	ZHANG KER	director	Sell	185	$56.92	$10.5K	30,366
Sep 9, 2026	Chen Sean Chihhsiang	officer: President and COO	Sell	15,000	$57.17	$857.6K	122,401
Sep 2, 2026	Esaka Fumihide	director, officer: Chief Executive Officer	Sell	108,500	$56.89	$6.17M	479,860
Aug 28, 2026	Hanson Scott McLean	director, officer: Chief Technology Officer	Sell	55,000	$59.69	$3.28M	226,136
Aug 18, 2026	Esaka Fumihide	director, officer: Chief Executive Officer	Sell	13,500	$64.39	$869.2K	463,407
Aug 18, 2026	Hanson Scott McLean	director, officer: Chief Technology Officer	Sell	6,200	$64.52	$400.0K	212,026
May 29, 2026	Chen Timothy	director	Sell	70,592	$79.79	$5.63M	48,178-59%
May 18, 2026	Esaka Fumihide	director, officer: Chief Executive Officer	Sell	60,000	$70.02	$4.20M	391,189
May 18, 2026	Hanson Scott McLean	director, officer: Chief Technology Officer	Sell	10,200	$69.24	$706.3K	209,426
May 18, 2026	Winzeler Jeffrey G	officer: Chief Financial Officer	Sell	26,000	$69.90	$1.82M	94,477
May 18, 2026	Chen Sean Chihhsiang	officer: President and COO	Sell	55,685	$70.89	$3.95M	143,609-28%
Apr 6, 2026	Connors Michele Kim	officer: General Counsel	Sell	811	$26.15	$21.2K	60,705
Jan 26, 2026	Hanson Scott McLean	Chief Technology Officer	Sell	10,000	$31.00	$310.0K	0
Jan 26, 2026	TAUTGES JOSEPH A	Director	Sell	7,800	$31.00	$241.8K	0

AMBQ Insider Buying Activity

The following table shows recent insider purchases of Ambiq Micro, Inc. (AMBQ) stock reported via SEC Form 4 filings.

No insider buying activity found for AMBQ in the last 12 months.

AMBQ Insider Selling Activity

The following table shows recent insider sales of Ambiq Micro, Inc. (AMBQ) stock reported via SEC Form 4 filings.

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Sep 15, 2026	ZHANG KER	director	Sell	10,000	$63.44	$634.4K	21,266-32%
Sep 15, 2026	Esaka Fumihide	director, officer: Chief Executive Officer	Sell	63,500	$62.70	$3.98M	470,175
Sep 15, 2026	Chen Sean Chihhsiang	officer: President and COO	Sell	15,000	$60.14	$902.1K	132,675
Sep 9, 2026	ZHANG KER	director	Sell	185	$56.92	$10.5K	30,366
Sep 9, 2026	Chen Sean Chihhsiang	officer: President and COO	Sell	15,000	$57.17	$857.6K	122,401
Sep 2, 2026	Esaka Fumihide	director, officer: Chief Executive Officer	Sell	108,500	$56.89	$6.17M	479,860
Aug 28, 2026	Hanson Scott McLean	director, officer: Chief Technology Officer	Sell	55,000	$59.69	$3.28M	226,136
Aug 18, 2026	Esaka Fumihide	director, officer: Chief Executive Officer	Sell	13,500	$64.39	$869.2K	463,407
Aug 18, 2026	Hanson Scott McLean	director, officer: Chief Technology Officer	Sell	6,200	$64.52	$400.0K	212,026
May 29, 2026	Chen Timothy	director	Sell	70,592	$79.79	$5.63M	48,178-59%
May 18, 2026	Esaka Fumihide	director, officer: Chief Executive Officer	Sell	60,000	$70.02	$4.20M	391,189
May 18, 2026	Hanson Scott McLean	director, officer: Chief Technology Officer	Sell	10,200	$69.24	$706.3K	209,426
May 18, 2026	Winzeler Jeffrey G	officer: Chief Financial Officer	Sell	26,000	$69.90	$1.82M	94,477
May 18, 2026	Chen Sean Chihhsiang	officer: President and COO	Sell	55,685	$70.89	$3.95M	143,609-28%
Apr 6, 2026	Connors Michele Kim	officer: General Counsel	Sell	811	$26.15	$21.2K	60,705
Jan 26, 2026	Hanson Scott McLean	Chief Technology Officer	Sell	10,000	$31.00	$310.0K	0
Jan 26, 2026	TAUTGES JOSEPH A	Director	Sell	7,800	$31.00	$241.8K	0