Stepien Thomas M - Insider Non-Derivative Transactions at Amprius Technologies, Inc. (AMPX) - (SEC)

Updated on January 3, 2026.

According to recent SEC insider information filed on Dec 19, 2025, Stepien Thomas M's relationship to Amprius Technologies, Inc. (AMPX) is Director,Officer (President), and currently has 610,000 shares of Common stock.

The chart below shows the number of shares owned, and the table shows the recent insider transactions.

You can see similar information for other AMPX insiders.

Related Topics: SEC Topic List.

Data Source: SEC.

Stepien Thomas M - Insider Non-Derivative Transactions of AMPX Common stock

Stepien Thomas M - Insider Non-Derivative Transactions at AMPX

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Date	Transaction	No. of Shares	Price Per Share	Shares Owned After Transactions
Dec 20, 2025	Acquisition -- (Common stock)	200000	0	610000
May 2, 2025	Acquisition -- (Common stock)	400000	0	400000