AMPX- Amprius Technologies, Inc.

Name: Amprius Technologies, Inc. Insider Trading Data
Creator: U.S. Securities and Exchange Commission
License: https://www.sec.gov/privacy#accessibility

Amprius Technologies, Inc. (AMPX) has 10 insiders with recent SEC Form 4 filings, including 0 buys and 10 sells. AMPX is classified in the Electrical Equipment industry within the Industrials sector.

Insider Ownership

Role	Insider	Shares	Value	30d
CFO	Wallach Sandra	1.01M	$18.00M	-
Other	Stefan Constantin Ionel	947.0K	$16.96M	-
Dir	Sun Kang	850.3K	$15.23M	-
Pres	Stepien Thomas M	610.0K	$10.93M	-
Dir	Dixon Donald R	394.7K	$7.07M	-

Activity

Buys and sells only

Transactions

10 filings

Date	Insider	Role	Type	Shares	Price	Value	Chg%	3M	12M
Jan 12, 2026	Sun Kang	Director	Sale+OE	506,267	$10.10	$5,111,474.14	-26.5%	+72.0%	-
Dec 11, 2025	Stefan Constantin Ionel55	Chief Technology Officer	Sale+OE	198,255	$10.51	$2,083,382.49	-20.9%	+62.5%	-
Nov 21, 2025	Sun Kang	Chief Executive Officer	Sell	68,655	$10.08	$692,131.65	-4.7%	+2.4%	-
Nov 21, 2025	Stefan Constantin Ionel55	Chief Technology Officer	Sell	25,024	$10.08	$252,274.45	-3.0%	+2.4%	-
Nov 17, 2025	Sun Kang	Chief Executive Officer	Sale+OE	1,000,000	$10.60	$10,595,300.00	-40.4%	-6.3%	-
Aug 21, 2025	Stefan Constantin Ionel55	Chief Technology Officer	Sell	19,159	$6.82	$130,591.58	-2.2%	+59.2%	-
Aug 21, 2025	Wallach Sandra	Chief Financial Officer	Sell	28,390	$6.82	$193,511.92	-2.7%	+59.2%	-
Aug 21, 2025	Sun Kang	Chief Executive Officer	Sell	65,654	$6.82	$447,510.79	-4.3%	+59.2%	-
May 21, 2025	Wallach Sandra	Chief Financial Officer	Sell	27,595	$2.43	$67,111.04	-2.6%	+178.5%	-
May 21, 2025	Stefan Constantin Ionel55	Chief Technology Officer	Sell	20,366	$2.43	$49,530.11	-2.3%	+178.5%	-

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Insider	Role	Shares	Value	Buys	Sells

Date	Ticker	Insider	Role	Type	Shares	Price	Value	Chg%	SEC