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$AMBQ

$79.01 -$3.79 (4.58%)

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Insider Transactions

Insider Transaction Summary

Perkins Caufield & Byers XVI, LLC Kleiner

1,172,079 shares

Net: +748,046 B/S: ∞

Wen Hsuan HSIEH

633,920 shares

Net: +633,920 B/S: ∞

Fumihide Esaka

391,189 shares

Net: +534,799 B/S: ∞

Scott McLean Hanson

203,126 shares

Net: +234,435 B/S: 24.44

Sean Chihhsiang Chen

120,275 shares

Net: +184,521 B/S: ∞

Jeffrey G Winzeler

94,395 shares

Net: +136,123 B/S: ∞

Michele Kim Connors

60,705 shares

Net: +87,345 B/S: 133.34

JOSEPH A TAUTGES

48,746 shares

Net: +48,746 B/S: 7.25

Timothy Chen

47,618 shares

Net: +47,618 B/S: ∞

KER ZHANG

23,809 shares

Net: +23,809 B/S: ∞

Insider Name	Current Shares	Net Change (1yr)	Buy/Sell Ratio
Perkins Caufield & Byers XVI, LLC Kleiner	1,172,079	+748,046	∞
Wen Hsuan HSIEH	633,920	+633,920	∞
Fumihide Esaka	391,189	+534,799	∞
Scott McLean Hanson	203,126	+234,435	24.44
Sean Chihhsiang Chen	120,275	+184,521	∞
Jeffrey G Winzeler	94,395	+136,123	∞
Michele Kim Connors	60,705	+87,345	133.34
JOSEPH A TAUTGES	48,746	+48,746	7.25
Timothy Chen	47,618	+47,618	∞
KER ZHANG	23,809	+23,809	∞

Individual Transactions

April 02, 2026

Michele Kim Connors

Open Market Sale

Change: -660

Price: $26.04

Shares: 60,705

Value: -$17,185

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Michele Kim Connors	Apr 06	Open Market Sale (S) Market Sale	60,705	-660	$26.04	-$17,185

March 06, 2026

Michele Kim Connors

Grant/Award Acquisition

Change: +32,123

Price: $0.00

Shares: 61,365

Value: +$0

Sean Chihhsiang Chen

Grant/Award Acquisition

Change: +64,246

Price: $0.00

Shares: 120,275

Value: +$0

Fumihide Esaka

Grant/Award Acquisition

Change: +160,616

Price: $0.00

Shares: 391,189

Value: +$0

Scott McLean Hanson

Grant/Award Acquisition

Change: +80,308

Price: $0.00

Shares: 203,126

Value: +$0

Jeffrey G Winzeler

Grant/Award Acquisition

Change: +41,728

Price: $0.00

Shares: 94,395

Value: +$0

Michele Kim Connors

Grant/Award Acquisition

Change: +32,123

Price: $0.00

Shares: 61,365

Value: +$0

Sean Chihhsiang Chen

Grant/Award Acquisition

Change: +64,246

Price: $0.00

Shares: 120,275

Value: +$0

Fumihide Esaka

Grant/Award Acquisition

Change: +160,616

Price: $0.00

Shares: 391,189

Value: +$0

Scott McLean Hanson

Grant/Award Acquisition

Change: +80,308

Price: $0.00

Shares: 203,126

Value: +$0

Jeffrey G Winzeler

Grant/Award Acquisition

Change: +41,728

Price: $0.00

Shares: 94,395

Value: +$0

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Michele Kim Connors	Mar 10	Grant/Award Acquisition (A) Compensation/Award	61,365	+32,123	$0.00	+$0
Sean Chihhsiang Chen	Mar 10	Grant/Award Acquisition (A) Compensation/Award	120,275	+64,246	$0.00	+$0
Fumihide Esaka	Mar 10	Grant/Award Acquisition (A) Compensation/Award	391,189	+160,616	$0.00	+$0
Scott McLean Hanson	Mar 10	Grant/Award Acquisition (A) Compensation/Award	203,126	+80,308	$0.00	+$0
Jeffrey G Winzeler	Mar 10	Grant/Award Acquisition (A) Compensation/Award	94,395	+41,728	$0.00	+$0
Michele Kim Connors	Apr 02	Grant/Award Acquisition (A) Compensation/Award	61,365	+32,123	$0.00	+$0
Sean Chihhsiang Chen	Apr 02	Grant/Award Acquisition (A) Compensation/Award	120,275	+64,246	$0.00	+$0
Fumihide Esaka	Apr 02	Grant/Award Acquisition (A) Compensation/Award	391,189	+160,616	$0.00	+$0
Scott McLean Hanson	Apr 02	Grant/Award Acquisition (A) Compensation/Award	203,126	+80,308	$0.00	+$0
Jeffrey G Winzeler	Apr 02	Grant/Award Acquisition (A) Compensation/Award	94,395	+41,728	$0.00	+$0

February 18, 2026

Wen Hsuan HSIEH

Option Exercise/Conversion

Change: +238,931

Price: $12.60

Shares: 633,920

Value: +$3,010,530

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Wen Hsuan HSIEH	Feb 20	Option Exercise/Conversion (M) Compensation/Award	633,920	+238,931	$12.60	+$3,010,530

January 26, 2026

Scott McLean Hanson

Open Market Sale

Change: -10,000

Price: $31.00

Shares: 122,818

Value: -$310,000

JOSEPH A TAUTGES

Open Market Sale

Change: -7,800

Price: $31.00

Shares: 48,746

Value: -$241,800

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Scott McLean Hanson	Jan 28	Open Market Sale (S) Market Sale	122,818	-10,000	$31.00	-$310,000
JOSEPH A TAUTGES	Jan 28	Open Market Sale (S) Market Sale	48,746	-7,800	$31.00	-$241,800

January 05, 2026

Michele Kim Connors

Grant/Award Acquisition

Change: +23,759

Price: $0.00

Shares: 23,759

Value: +$0

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Michele Kim Connors	Jan 07	Grant/Award Acquisition (A) Compensation/Award	23,759	+23,759	$0.00	+$0

October 07, 2025

Fumihide Esaka

Option Exercise/Conversion

Change: +53,660

Price: $5.88

Shares: 230,573

Value: +$315,520

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Fumihide Esaka	Feb 10	Option Exercise/Conversion (M) Compensation/Award	230,573	+53,660	$5.88	+$315,520

October 02, 2025

Sean Chihhsiang Chen

Grant/Award Acquisition

Change: +56,029

Price: $0.00

Shares: 56,029

Value: +$0

Fumihide Esaka

Grant/Award Acquisition

Change: +159,907

Price: $0.00

Shares: 176,913

Value: +$0

Scott McLean Hanson

Grant/Award Acquisition

Change: +83,819

Price: $0.00

Shares: 132,818

Value: +$0

Jeffrey G Winzeler

Grant/Award Acquisition

Change: +52,667

Price: $0.00

Shares: 52,667

Value: +$0

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Sean Chihhsiang Chen	Oct 06	Grant/Award Acquisition (A) Compensation/Award	56,029	+56,029	$0.00	+$0
Fumihide Esaka	Oct 06	Grant/Award Acquisition (A) Compensation/Award	176,913	+159,907	$0.00	+$0
Scott McLean Hanson	Oct 06	Grant/Award Acquisition (A) Compensation/Award	132,818	+83,819	$0.00	+$0
Jeffrey G Winzeler	Oct 06	Grant/Award Acquisition (A) Compensation/Award	52,667	+52,667	$0.00	+$0