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$AMBQ

$60.12 +$3.69 (6.54%)

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Insider Transactions

Insider Transaction Summary

Perkins Caufield & Byers XVI, LLC Kleiner

1,172,079 shares

Net: 0 B/S: -

Fumihide Esaka

436,652 shares

Net: +580,262 B/S: 10.67

Scott McLean Hanson

211,226 shares

Net: +248,835 B/S: 18.9

Sean Chihhsiang Chen

175,960 shares

Net: +207,855 B/S: 7.42

Jeffrey G Winzeler

106,299 shares

Net: +148,109 B/S: 6.71

Michele Kim Connors

60,705 shares

Net: +87,345 B/S: 133.34

JOSEPH A TAUTGES

53,703 shares

Net: -2,843 B/S: 0.64

Timothy Chen

52,575 shares

Net: -17,457 B/S: 0.22

KER ZHANG

28,766 shares

Net: +4,957 B/S: ∞

Wen Hsuan HSIEH

4,957 shares

Net: +243,888 B/S: ∞

Bernard Bennett Banks

4,957 shares

Net: +4,957 B/S: ∞

Insider Name	Current Shares	Net Change (1yr)	Buy/Sell Ratio
Perkins Caufield & Byers XVI, LLC Kleiner	1,172,079	0	-
Fumihide Esaka	436,652	+580,262	10.67
Scott McLean Hanson	211,226	+248,835	18.9
Sean Chihhsiang Chen	175,960	+207,855	7.42
Jeffrey G Winzeler	106,299	+148,109	6.71
Michele Kim Connors	60,705	+87,345	133.34
JOSEPH A TAUTGES	53,703	-2,843	0.64
Timothy Chen	52,575	-17,457	0.22
KER ZHANG	28,766	+4,957	∞
Wen Hsuan HSIEH	4,957	+243,888	∞
Bernard Bennett Banks	4,957	+4,957	∞

Individual Transactions

June 08, 2026

Bernard Bennett Banks

Grant/Award Acquisition

Change: +4,957

Price: $0.00

Shares: 4,957

Value: +$0

Wen Hsuan HSIEH

Grant/Award Acquisition

Change: +4,957

Price: $0.00

Shares: 4,957

Value: +$0

Timothy Chen

Grant/Award Acquisition

Change: +4,957

Price: $0.00

Shares: 52,575

Value: +$0

JOSEPH A TAUTGES

Grant/Award Acquisition

Change: +4,957

Price: $0.00

Shares: 53,703

Value: +$0

KER ZHANG

Grant/Award Acquisition

Change: +4,957

Price: $0.00

Shares: 28,766

Value: +$0

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Bernard Bennett Banks	Jun 10	Grant/Award Acquisition (A) Compensation/Award	4,957	+4,957	$0.00	+$0
Wen Hsuan HSIEH	Jun 10	Grant/Award Acquisition (A) Compensation/Award	4,957	+4,957	$0.00	+$0
Timothy Chen	Jun 10	Grant/Award Acquisition (A) Compensation/Award	52,575	+4,957	$0.00	+$0
JOSEPH A TAUTGES	Jun 10	Grant/Award Acquisition (A) Compensation/Award	53,703	+4,957	$0.00	+$0
KER ZHANG	Jun 10	Grant/Award Acquisition (A) Compensation/Award	28,766	+4,957	$0.00	+$0

June 02, 2026

Jeffrey G Winzeler

Option Exercise/Conversion

Change: +5,952

Price: $16.80

Shares: 106,299

Value: +$99,993

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Jeffrey G Winzeler	Jun 04	Option Exercise/Conversion (M) Compensation/Award	106,299	+5,952	$16.80	+$99,993

May 27, 2026

Timothy Chen

Open Market Sale

Change: -22,414

Price: $78.85

Shares: 48,178

Value: -$1,767,343

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Timothy Chen	May 29	Open Market Sale (S) Market Sale	48,178	-22,414	$78.85	-$1,767,343

May 15, 2026

Sean Chihhsiang Chen

Option Exercise/Conversion

Change: +55,685

Price: $5.88

Shares: 175,960

Value: +$327,427

Sean Chihhsiang Chen

Open Market Sale

Change: -32,351

Price: $70.53

Shares: 143,609

Value: -$2,281,826

Fumihide Esaka

Option Exercise/Conversion

Change: +45,463

Price: $8.12

Shares: 436,652

Value: +$369,159

Scott McLean Hanson

Option Exercise/Conversion

Change: +8,100

Price: $8.12

Shares: 211,226

Value: +$65,772

Jeffrey G Winzeler

Option Exercise/Conversion

Change: +5,952

Price: $16.80

Shares: 100,347

Value: +$99,993

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Sean Chihhsiang Chen	May 18	Option Exercise/Conversion (M) Compensation/Award	175,960	+55,685	$5.88	+$327,427
Sean Chihhsiang Chen	May 18	Open Market Sale (S) Market Sale	143,609	-32,351	$70.53	-$2,281,826
Fumihide Esaka	May 18	Option Exercise/Conversion (M) Compensation/Award	436,652	+45,463	$8.12	+$369,159
Scott McLean Hanson	May 18	Option Exercise/Conversion (M) Compensation/Award	211,226	+8,100	$8.12	+$65,772
Jeffrey G Winzeler	May 18	Option Exercise/Conversion (M) Compensation/Award	100,347	+5,952	$16.80	+$99,993

May 14, 2026

Jeffrey G Winzeler

Open Market Sale

Change: -25,918

Price: $69.90

Shares: 94,477

Value: -$1,811,618

Fumihide Esaka

Option Exercise/Conversion

Change: +60,000

Price: $8.12

Shares: 451,189

Value: +$487,200

Fumihide Esaka

Open Market Sale

Change: -60,000

Price: $70.02

Shares: 391,189

Value: -$4,201,122

Scott McLean Hanson

Option Exercise/Conversion

Change: +10,200

Price: $8.12

Shares: 213,326

Value: +$82,824

Scott McLean Hanson

Open Market Sale

Change: -3,900

Price: $68.62

Shares: 209,426

Value: -$267,631

Jeffrey G Winzeler

Option Exercise/Conversion

Change: +26,000

Price: $16.80

Shares: 120,395

Value: +$436,800

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Jeffrey G Winzeler	May 18	Open Market Sale (S) Market Sale	94,477	-25,918	$69.90	-$1,811,618
Fumihide Esaka	May 18	Option Exercise/Conversion (M) Compensation/Award	451,189	+60,000	$8.12	+$487,200
Fumihide Esaka	May 18	Open Market Sale (S) Market Sale	391,189	-60,000	$70.02	-$4,201,122
Scott McLean Hanson	May 18	Option Exercise/Conversion (M) Compensation/Award	213,326	+10,200	$8.12	+$82,824
Scott McLean Hanson	May 18	Open Market Sale (S) Market Sale	209,426	-3,900	$68.62	-$267,631
Jeffrey G Winzeler	May 18	Option Exercise/Conversion (M) Compensation/Award	120,395	+26,000	$16.80	+$436,800

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

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