Fumihide Esaka Insider Trades & Stock Holdings

Chief Executive Officer · Ambiq Micro, Inc. · Latest filing Oct 15, 2026

Fumihide Esaka, Chief Executive Officer at Ambiq Micro, Inc. has 1 Form 4 trade on file since Oct 15, 2026. Open-market activity: 0 purchases ($0) and 1 sale ($255.02K), net -$255.02K. Latest filing: disposed of 5K shares of $AMBQ on Oct 15, 2026 at $51.

Trades on file

1

Open-market bought

$0

Open-market sold

$255.02K

Net open-market

-$255.02K

Shares held ($AMBQ)

443.90K

Latest filing

Oct 15, 2026

Shares held by Fumihide Esaka

• $AMBQ443.90K sh

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

All insider trades by Fumihide Esaka

Date	Ticker	Type	Shares	Price	Value	Owned after	ΔOwn	1W	1M	6M	Role	Filing	Story
Oct 15, 2026	$AMBQ	Sell (Open-market sale) 10b5-1	5K	$51	$255.02K	443.90K	-1.11%				Chief Executive Officer	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 Fumihide Esaka traded

• $AMBQ

Frequently asked questions

Has Fumihide Esaka been buying or selling stock?

Fumihide Esaka has 0 open-market purchases and 1 open-market sale on file, net -$255.02K. Grants, option exercises and tax withholding are listed separately because they are not open-market trades.

What was Fumihide Esaka's latest insider trade?

disposed of 5K shares of $AMBQ on Oct 15, 2026 at $51.

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.