SEC Form 4 reporting owner

Chu Steven

Chu Steven has filed 8 Form 4 transactions reported between March 10, 2026 and June 12, 2026, as Director of Amprius Technologies, Inc..

Name as filed: Chu Steven

Open-market buys, 24 mo

None

reported

Open-market sales, 24 mo

$5.9M

4 lines

Companies

with Form 4 filings

Latest transaction

Jun 12, 2026

transaction date

Roles and reported holdings

AMPXAmprius Technologies, Inc.
Mar 10, 2026 – Jun 12, 2026
Director
Held directly127,339 sh as of Mar 12, 2026 · Form 4
24 months: $5.9M sold

Transaction history

All 8 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

Date	Company	Type	Shares	Price	Value	Owned after	Filing
Jun 12, 2026	AMPXDirector	Grant or awardCode A · direct	10,423	—	—	137,762	Form 4
Mar 12, 2026	AMPXDirector	Open-market saleCode S · direct	5,565	$18.53	$103K@ $18.53	127,339	Form 4
Mar 12, 2026	AMPXDirector	Open-market saleCode S · direct	50,000	$18.21	$911K@ $18.21	132,904	Form 4
Mar 12, 2026	AMPXDirector	Open-market saleCode S · direct	100,000	$18.65	$1.9M@ $18.65	182,904	Form 4
Mar 12, 2026	AMPXDirector	Option exerciseCode M · direct	69,422	$0.6200	$43K@ $0.6200	282,904	Form 4
Mar 12, 2026	AMPXDirector	Option exerciseCode M · direct	86,143	$2.61	$225K@ $2.61	213,482	Form 4
Mar 10, 2026	AMPXDirector	Open-market saleCode S · direct	166,632	$17.92	$3.0M@ $17.92	127,339	Form 4
Mar 10, 2026	AMPXDirector	Option exerciseCode M · direct	104,132	$0.6200	$65K@ $0.6200	293,971	Form 4

How this page is built

Every row comes from a Form 4 filed with the SEC, which officers, directors and holders of more than 10% of a company’s stock must file within two business days of a trade. Transactions are grouped by the reporting owner’s name as filed (spacing, capitals and punctuation ignored); two different people filing under an identical name would appear together, and one person filing under two spellings appears on two pages.

Open-market totals count code P purchases and code S sales over the last 24 months. The same trade reported on more than one filing is counted once; when another owner (for example a fund and its general partner) reports the identical trade, they are listed beside it. Holdings are the shares owned after the latest purchase, sale, gift or tax-withholding line, shown separately for direct and indirect ownership; an indirect figure is one holding line, not a total across every trust or entity.

This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.