CHEN SEAN CHIHHSIANG

PrivateCIK: 2078559
Location

AUSTIN, TX

CHEN SEAN CHIHHSIANG (President and COO) sold 12.4% of their position (15K shares) of AMBIQ MICRO, INC. on the open market

Open‑market sale worth $772.4K — a moderate reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 5 sales
InsiderCHEN SEAN CHIHHSIANGCIK 2078559
→
IssuerAMBIQ MICRO, INC.CIK 1500412
Officer· President and COO
Since Mar 2026
-15K
Net shares
Net seller
$772.4K
Total sold
5
Open market trades
0B · 5S
7
Total transactions
15K acquired · 30K disposed
Non-Derivative Transactions6

Common Stock

Direct
M · Option Exercise

Shares

+15K

Price / share

$8.12

Trade value

$121.80K

% of position

14.1%
10/14/2026
106.27K→121.27K

Common Stock

Direct
S · Sale

Shares

−7.54K

Price / share

$50.13

Trade value

$377.92K

% of position

6.2%
10/14/2026
121.27K→113.73K

Common Stock

Direct
S · Sale

Shares

−1.26K

Price / share

$51.53

Trade value

$64.98K

% of position

1.1%
10/14/2026
113.73K→112.47K

Common Stock

Direct
S · Sale

Shares

−2K

Price / share

$52.47

Trade value

$104.94K

% of position

1.8%
10/14/2026
112.47K→110.47K

Common Stock

Direct
S · Sale

Shares

−4K

Price / share

$53.44

Trade value

$213.75K

% of position

3.6%
10/14/2026
110.47K→106.47K

Common Stock

Direct
S · Sale

Shares

−200.00

Price / share

$54.27

Trade value

$10.85K

% of position

0.2%
10/14/2026
106.47K→106.27K
Total

Net shares

+0.00

Net value

-$650.64K

Derivative Transactions1

Stock Option (Right to Buy)

Direct
M · Option Exercise
Converts to

Common Stock

15K shares

Shares

−15K

Strike price

8.12

Held after

119.42K

Exercisable

—

10/14/2026
CHEN SEAN CHIHHSIANG — Insider Transaction (Form 4) Filed Oct 16, 2026 | Finecho