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Ambiq Micro, Inc.

AMBQ Net selling

CIK 0001500412 #2295 in the set updated 17 Sep 2026

Bought (12 mo)

$0.00

out of their own pocket, the only kind of buying there is

Sold (12 mo)

$34.04M

$0.00 on a plan · $27.20M straight out of an exercise

Sold at will

$6.84M

10 of 47 sales

Net

−$34.04M

−$6.84M against sales at will

By person

11 insiders · 54 transactions

33.7×

Fumihide Esaka holds 33.7 times base salary in stock. $28.09M of shares against $832.17K in salary for 2025.

Salary from the company's own proxy. The shares are what Fumihide Esaka last reported holding, valued at $61.00, the price Common Stock was last bought or sold at on the open market here, on 15 Sep 2026.

Insider

Role

Bought

Sold

Net

Holding

Of company

Worth

Change

Esaka Fumihide

Chief Executive Officer

—

$15.22M (18) scheduled

−$15.22M

460,460

1.90%

$28.09M

+2,608%

Chen Sean Chihhsiang

President and COO

—

$5.71M (7) scheduled

−$5.71M

120,275

0.4973%

$7.34M

—

Chen Timothy

Director

—

$5.63M (4)

−$5.63M

52,575

0.2174%

$3.21M

−25.5%

Hanson Scott McLean

Chief Technology Officer

—

$4.75M (10) scheduled

−$4.75M

221,226

0.9147%

$13.49M

+351.5%

Winzeler Jeffrey G

Chief Financial Officer

—

$1.82M (2) scheduled

−$1.82M

106,299

0.4395%

$6.48M

—

ZHANG KER

Director

—

$644.89K (3)

−$644.89K

20,366

0.0842%

$1.24M

—

TAUTGES JOSEPH A

Director

—

$241.80K (1)

−$241.80K

53,703

0.2221%

$3.28M

—

Connors Michele Kim

General Counsel

—

$21.21K (2)

−$21.21K

60,554

0.2504%

$3.69M

—

KPCB XVI Associates, LLC entity

10% owner

—

1,488,949

6.16%

$90.83M

+251.1%

HSIEH Wen Hsuan

Director

—

638,877

2.64%

$38.97M

—

Banks Bernard Bennett

Director

—

4,957

0.0205%

$302.38K

—

Individual transactions

Insider

Date

Role

Action

Price

Amount

Winzeler Jeffrey G

2 Jun 2026

Chief Financial Officer

Exercised, kept

5,952

$16.80

$99.99K

Esaka Fumihide

15 May 2026

Chief Executive Officer

Exercised, kept

14,537

$12.60

$183.17K

Esaka Fumihide

15 May 2026

Chief Executive Officer

Exercised, kept

45,463

$8.12

$369.16K

Hanson Scott McLean

15 May 2026

Chief Technology Officer

Exercised, kept

8,100

$8.12

$65.77K

Winzeler Jeffrey G

15 May 2026

Chief Financial Officer

Exercised, kept

5,952

$16.80

$99.99K

HSIEH Wen Hsuan

18 Feb 2026

Director

Exercised, kept indirect

238,931

$12.60

$3.01M

Esaka Fumihide

7 Oct 2025

Chief Executive Officer

Exercised, kept

53,660

$5.88

$315.52K

Show all 54 transactions →

What was left out

Form 4 filings counted 35

Amendments (4/A) skipped 6

Filings about a different issuer 0

Unreadable filings 0

Joint filings 0

Sales on a Rule 10b5-1 plan 0

Sales straight out of an exercise 37

Sales at will 10

Transactions with no price 0

Shares from compensation/vesting 1,608,506

History held since 31 Jul 2025