Steven Chu

CIK: 0001296381

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)4 (36.4%)

Position reduction

Option Exercises (M)3 (27.3%)

Derivative conversions

Awards (A)4 (36.4%)

Compensation grants

Other (G, F, J, C, D, …)0 (0.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

AMPX

Amprius Technologies, Inc.

Director

Discretionary Trading P&L

Holdings

Transaction History (11 total)

AMPX
Amprius Technologies, Inc.
Jun 12, 2026
Award(A)
Direct
10.4K shares-
AMPX
Amprius Technologies, Inc.
Mar 12, 2026
Sale(S)
Direct
5.6K shares at avg. $18.53$103K
AMPX
Amprius Technologies, Inc.
Mar 12, 2026
Sale(S)
Direct
100K shares at avg. $18.65$1.9M
AMPX
Amprius Technologies, Inc.
Mar 12, 2026
Sale(S)
Direct
50K shares at avg. $18.21$911K
AMPX
Amprius Technologies, Inc.
Mar 12, 2026
Exercise(M)
Direct
86.1K shares at avg. $2.61$225K
AMPX
Amprius Technologies, Inc.
Mar 12, 2026
Exercise(M)
Direct
69.4K shares at avg. $0.62$43K
AMPX
Amprius Technologies, Inc.
Mar 10, 2026
Sale(S)
Direct
166.6K shares at avg. $17.92$3.0M
AMPX
Amprius Technologies, Inc.
Mar 10, 2026
Exercise(M)
Direct
104.1K shares at avg. $0.62$65K
AMPX
Amprius Technologies, Inc.
Jun 13, 2025
Award(A)
Direct
44.4K shares-
AMPX
Amprius Technologies, Inc.
Oct 23, 2024
Award(A)
Stock Option (right to buy)
Direct
173.6K shares-
AMPX
Amprius Technologies, Inc.
Oct 23, 2024
Award(A)
Stock Option (right to buy)
Direct
173.6K shares-

		Type	Shares	Price		Ownership
Jun 12, 2026	AMPX Amprius Technologies, Inc.	Award(A)	10,423	-	$0	Direct
Mar 12, 2026	AMPX Amprius Technologies, Inc.	Sale(S)	5,565	$18.53	$103,145	Direct
Mar 12, 2026	AMPX Amprius Technologies, Inc.	Sale(S)	100,000	$18.65	$1,864,670	Direct
Mar 12, 2026	AMPX Amprius Technologies, Inc.	Sale(S)	50,000	$18.21	$910,740	Direct
Mar 12, 2026	AMPX Amprius Technologies, Inc.	Exercise(M)	86,143	$2.61	$224,833	Direct
Mar 12, 2026	AMPX Amprius Technologies, Inc.	Exercise(M)	69,422	$0.62	$43,042	Direct
Mar 10, 2026	AMPX Amprius Technologies, Inc.	Sale(S)	166,632	$17.92	$2,985,429	Direct
Mar 10, 2026	AMPX Amprius Technologies, Inc.	Exercise(M)	104,132	$0.62	$64,562	Direct
Jun 13, 2025	AMPX Amprius Technologies, Inc.	Award(A)	44,444	-	-	Direct
Oct 23, 2024	AMPX Amprius Technologies, Inc.	Award(A) Stock Option (right to buy)	173,554	-	-	Direct
Oct 23, 2024	AMPX Amprius Technologies, Inc.	Award(A) Stock Option (right to buy)	173,554	-	-	Direct

1-11 of 11 transactions

About Chu Steven

Chu Steven (SEC CIK 0001296381) files insider reports with the SEC as Director of Amprius Technologies, Inc. (AMPX).

Signal8 holds 4 ownership filings by Chu Steven, all Form 4s, filed between Oct 25, 2024 and Jun 16, 2026. Those filings report 11 transactions, from Oct 23, 2024 to Jun 12, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Chu Steven's filings is in FREMONT, CA.

Recent filings by Chu Steven

Jun 12, 2026: Grant or award of AMPX shares (Form 4, code A).
Mar 12, 2026: Open-market sales of AMPX shares (3 lines, Form 4, code S).
Mar 12, 2026: Option exercises of AMPX shares (2 lines, Form 4, code M).
Mar 10, 2026: Open-market sale of AMPX shares (Form 4, code S).
Mar 10, 2026: Option exercise of AMPX shares (Form 4, code M).

Other insiders filing for Amprius Technologies, Inc. (AMPX)

Sun Kang, Director
Stefan Constantin Ionel, Chief Technology Officer
Stepien Thomas M, Chief Executive Officer
BAYLESS KATHLEEN A, Director
SATTERTHWAITE LIVINGSTON, Director
DIXON DONALD R, Director

How to read Form 4 transaction codes