ESAKA FUMIHIDE (Chief Executive Officer) sold 2.9% of their position (13.50K shares) of AMBIQ MICRO, INC. on the open market

Open‑market sale worth $869.2K — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 3 sales

ESAKA FUMIHIDE

Filed: 8/18/2026ACC: 0002078454-26-000010

InsiderESAKA FUMIHIDECIK 2078454

→

IssuerAMBIQ MICRO, INC.CIK 1500412

DirectorOfficer· Chief Executive Officer

Since Mar 2026

-13.50K

Net shares

Net seller

$869.2K

Total sold

Open market trades

0B · 3S

Total transactions

13.50K acquired · 27K disposed

Non-Derivative Transactions4

Common Stock

Direct

M · Option Exercise

+13.50K

Price / share

$8.12

Trade value

$109.62K

% of position

3.0%

8/14/2026

451.19K→464.69K

Common Stock

Direct

S · Sale

−1.28K

Price / share

$63.29

Trade value

$81.13K

% of position

0.3%

8/14/2026

464.69K→463.41K

Common Stock

Direct

S · Sale

−10.72K

Price / share

$64.40

Trade value

$690.20K

% of position

2.3%

8/14/2026

463.41K→452.69K

Common Stock

Direct

S · Sale

−1.50K

Price / share

$65.26

Trade value

$97.89K

% of position

0.3%

8/14/2026

452.69K→451.19K

Total

Net shares

+0.00

Net value

-$759.61K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	8/14/2026	M · Option Exercise	+13.50K	$8.12	$109.62K	3.0%	451.19K	464.69K
Common Stock Direct	8/14/2026	S · Sale	−1.28K	$63.29	$81.13K	0.3%	464.69K	463.41K
Common Stock Direct	8/14/2026	S · Sale	−10.72K	$64.40	$690.20K	2.3%	463.41K	452.69K
Common Stock Direct	8/14/2026	S · Sale	−1.50K	$65.26	$97.89K	0.3%	452.69K	451.19K
Total			+0.00		-$759.61K

Derivative Transactions1

Stock Option (Right to Buy)

Direct

M · Option Exercise

Converts to

Common Stock

13.50K shares

−13.50K

Strike price

8.12

Held after

85.51K

Exercisable

—

8/14/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Stock Option (Right to Buy) Direct	Common Stock13.50K shares	8/14/2026	M · Option Exercise	−13.50K	8.12	—	85.51K