Chen Sean Chihhsiang Insider Trades & Stock Holdings

President and COO · Ambiq Micro, Inc. · Latest filing Oct 5, 2026

Chen Sean Chihhsiang, President and COO at Ambiq Micro, Inc. has 2 Form 4 trades on file since Oct 2, 2026. Open-market activity: 0 purchases ($0) and 2 sales ($951.74K), net -$951.74K. Latest filing: disposed of 8.21K shares of $AMBQ on Oct 5, 2026 at $66.78.

Trades on file

2

Open-market bought

$0

Open-market sold

$951.74K

Net open-market

-$951.74K

Latest filing

Oct 5, 2026

All insider trades by Chen Sean Chihhsiang

Date	Ticker	Type	Shares	Price	Value	Owned after	ΔOwn	1W	1M	6M	Role	Filing	Story
Oct 5, 2026	$AMBQ	Sell (Open-market sale) 10b5-1	8.21K	$66.78	$547.95K			-15.9%			President and COO		—
Oct 2, 2026	$AMBQ	Sell (Open-market sale) 10b5-1	5.80K	$69.60	$403.79K			-14.1%			President and COO		—

"Buy" means shares acquired on the Form 4 (including grants and option exercises); "Sell" means shares disposed. 1W / 1M / 6M = how the stock moved after the trade.

Stocks Chen Sean Chihhsiang traded

• $AMBQ

Frequently asked questions

Has Chen Sean Chihhsiang been buying or selling stock?

Chen Sean Chihhsiang has 0 open-market purchases and 2 open-market sales on file, net -$951.74K. Grants, option exercises and tax withholding are listed separately because they are not open-market trades.

What was Chen Sean Chihhsiang's latest insider trade?

disposed of 8.21K shares of $AMBQ on Oct 5, 2026 at $66.78.

Data comes from public SEC Form 4 and 13F filings and STOCK Act disclosures. Dates are the trade or filing date reported. This page is for research only and is not investment advice.