Stepien Thomas M

Insider CIK 2067233 · AMPX President, Director

Track record PRO

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Track record

See how this insider's past purchases performed 30 and 90 days later, and a conviction score on each buy.

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Trades across companies

Ticker	Code	Trade	Filed	Shares	Price	Value	Owned after
AMPX Amprius Technologies, Inc.	A Award	2026-08-25	2026-08-25	346	—	$0	37,260	SEC↗
AMPX Amprius Technologies, Inc.	G Gift	2026-08-25	2026-08-25	346	—	$0	578,750	SEC↗
AMPX Amprius Technologies, Inc.	G Gift	2026-08-25	2026-08-25	5,000	—	$0	579,096	SEC↗
AMPX Amprius Technologies, Inc.	G Gift	2026-08-25	2026-08-25	5,000	—	$0	584,096	SEC↗
AMPX Amprius Technologies, Inc.	G Gift	2026-08-25	2026-08-25	5,000	—	$0	589,096	SEC↗
AMPX Amprius Technologies, Inc.	A Award	2026-08-25	2026-08-25	346	—	$0	37,260	SEC↗
AMPX Amprius Technologies, Inc.	G Gift	2026-08-25	2026-08-25	346	—	$0	578,750	SEC↗
AMPX Amprius Technologies, Inc.	G Gift	2026-08-25	2026-08-25	5,000	—	$0	579,096	SEC↗
AMPX Amprius Technologies, Inc.	G Gift	2026-08-25	2026-08-25	5,000	—	$0	584,096	SEC↗
AMPX Amprius Technologies, Inc.	G Gift	2026-08-25	2026-08-25	5,000	—	$0	589,096	SEC↗
AMPX Amprius Technologies, Inc.	S Sale	2026-08-24	2026-08-25	8,000	$10.03	$80.2K	594,096	SEC↗
AMPX Amprius Technologies, Inc.	S Sale	2026-08-24	2026-08-25	8,000	$10.03	$80.2K	594,096	SEC↗
AMPX Amprius Technologies, Inc.	S Sale	2026-08-21	2026-08-25	23,529	$10.34	$243.3K	602,096	SEC↗
AMPX Amprius Technologies, Inc.	S Sale	2026-08-21	2026-08-25	23,529	$10.34	$243.3K	602,096	SEC↗
AMPX Amprius Technologies, Inc.	G Gift	2026-06-04	2026-06-05	36,914	—	$0	627,625	SEC↗
AMPX Amprius Technologies, Inc.	G Gift	2026-06-04	2026-06-05	30,384	—	$0	664,539	SEC↗
AMPX Amprius Technologies, Inc.	S Sale	2026-06-04	2026-06-05	2,000	$20.97	$41.9K	625,625	SEC↗
AMPX Amprius Technologies, Inc.	G Gift	2026-06-04	2026-06-05	36,914	—	$0	36,914	SEC↗
AMPX Amprius Technologies, Inc.	S Sale	2026-05-27	2026-05-28	4,375	$17.19	$75.2K	694,923	SEC↗
AMPX Amprius Technologies, Inc.	S Sale	2026-05-21	2026-05-26	60,702	$14.79	$897.8K	699,298	SEC↗
AMPX Amprius Technologies, Inc.	A Award	2026-03-04	2026-03-06	150,000	—	$0	760,000	SEC↗
AMPX Amprius Technologies, Inc.	A Award	2025-12-19	2026-05-07	200,000	—	$0	760,000	SEC↗
AMPX Amprius Technologies, Inc.	A Award	2025-12-19	2025-12-22	200,000	—	$0	610,000	SEC↗
AMPX Amprius Technologies, Inc.	A Award	2025-05-01	2025-05-06	400,000	—	$0	400,000	SEC↗