Stepien Thomas M

Insider

Chief Executive Officer

Trades at: AMPX

30D 90D 1Y

Net shares · 30d

-6.4K

0 buy · 6.4K sell

Net value · 30d

-$117.2K

$0 in · $117.2K out

Sentiment · 30d

Net selling

0% buying · 100% selling

Open-market trades · 30d

0 buy · 6.4K sell

Trading track record · all companies

Running net of open-market buys − sells across every company. Tap the line or a marker for details. ▲ buy · ▼ sell.

Transactions · 30d

Open-market Buys Sells All types

AMPX Sell·S
Jun 4, 26

Chief Executive Officer

$41.9K

2.0K sh · $20.97

Own -0%
AMPX Other·G
Jun 4, 26

Chief Executive Officer

$0

104.2K sh · 3 lots

Own -74%
AMPX Sell·S
May 27, 26

Chief Executive Officer

$75.2K

4.4K sh · $17.19

Own -1%

Date▾	Ticker	Role	Type	Shares	Own Δ	Price	Value
Jun 4, 2026	AMPX	Chief Executive Officer	Sell S	2.0K	-0%	$20.97	$41.9K
Jun 4, 2026	AMPX	Chief Executive Officer	Other G	104.2K3 lots	-74%	—	$0
May 27, 2026	AMPX	Chief Executive Officer	Sell S	4.4K	-1%	$17.19	$75.2K

Buy Sell Non-market (grant · exercise · gift)

About Stepien Thomas M

This profile aggregates every SEC Form 4 insider transaction reported by Stepien Thomas M across all companies they trade. Open-market purchases (code P) and sales (code S) are the highest-signal, discretionary trades; grants (A), option exercises (M) and gifts (G) reflect compensation rather than conviction and carry no market price. Figures cover the selected period and update as new filings are ingested.