Thomas M Stepien – Insider Trading Activity | DataHeimdall

Thomas M Stepien

Chief Executive Officer at Amprius Technologies, Inc.

CIK: 1899287

8

Total trades

1

Buys

5

Sells

May 21, 2026

Last trade

Date	Stock	Type	Shares	Value	Src
May 21, 2026	AMPXAmprius Technologies, Inc.	Sell	67,796	$1.0M
May 21, 2026	AMPXAmprius Technologies, Inc.	Sell	60,702	$898K
May 21, 2026	AMPXAmprius Technologies, Inc.	Sell	28,812	$426K
May 5, 2026	AMPXAmprius Technologies, Inc.	Buy	6,250	–
Apr 1, 2026	AMPXAmprius Technologies, Inc.	Sell	1,250,963	$19.7M
Apr 1, 2026	AMPXAmprius Technologies, Inc.	Option	187,495	$690K
Apr 1, 2026	AMPXAmprius Technologies, Inc.	Option	1,312,505	$2.3M
Apr 1, 2026	AMPXAmprius Technologies, Inc.	Sell	249,037	$4.2M