Sean Chihhsiang Chen Insider Trades & Stock Holdings

President and COO · Ambiq Micro, Inc. · Latest filing Oct 14, 2026

Sean Chihhsiang Chen, President and COO at Ambiq Micro, Inc. has 1 Form 4 trade on file since Oct 14, 2026. Open-market activity: 0 purchases ($0) and 1 sale ($772.44K), net -$772.44K. Latest filing: disposed of 15K shares of $AMBQ on Oct 14, 2026 at $51.50.

Trades on file

1

Open-market bought

$0

Open-market sold

$772.44K

Net open-market

-$772.44K

Shares held ($AMBQ)

106.27K

Latest filing

Oct 14, 2026

Shares held by Sean Chihhsiang Chen

• $AMBQ106.27K sh

Shares owned after the most recent Form 4 for each company.

All insider trades by Sean Chihhsiang Chen

Date	Ticker	Type	Shares	Price	Value	Owned after	ΔOwn	1W	1M	6M	Role	Filing	Story
Oct 14, 2026	$AMBQ	Sell (Open-market sale) 10b5-1	15K	$51.50	$772.44K	106.27K	-12.37%				President and COO	SEC	—

"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 Sean Chihhsiang Chen traded

• $AMBQ

Frequently asked questions

Has Sean Chihhsiang Chen been buying or selling stock?

Sean Chihhsiang Chen has 0 open-market purchases and 1 open-market sale on file, net -$772.44K. Grants, option exercises and tax withholding are listed separately because they are not open-market trades.

What was Sean Chihhsiang Chen's latest insider trade?

disposed of 15K shares of $AMBQ on Oct 14, 2026 at $51.50.

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.