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SEC Form 4 history

AMPX (AMPX) insider trades

AMPX insider trading activity (SEC Form 4). Over the trailing 90 days, AMPX insiders filed 0 purchases totalling $0 and 8 sales totalling $2.8M — net SELLING of $2.8M. Most recent filing: Jun 5, 2026. Insider transactions are a Pro-tier alertable signal in the live Top Tier Newswire terminal — Form 4 filings reach the wire within minutes of acceptance by the SEC. Data shown publicly here is delayed 4 hours.

Public view, delayed 4h. Real-time alerting on insider filings is a Pro feature.Open in the live terminal →
Buys (90d)
0
$0
Sells (90d)
8
$2.8M
Net (90d)
-$2.8M
net selling
Most recent
Jun 5, 2026

Recent transactions

FiledInsiderRoleTypeSharesPriceValue
Jun 5, 2026Stepien Thomas MS Sale—$20.97$42Kfiling
May 28, 2026Sun KangS Sale—$17.19$6Kfiling
May 28, 2026Stepien Thomas MS Sale—$17.19$75Kfiling
May 28, 2026Stefan Constantin IonelS Sale—$17.19$55Kfiling
May 28, 2026Dixon Donald RS Sale—$17.90$320Kfiling
May 26, 2026Stefan Constantin IonelS Sale—$14.79$426Kfiling
May 26, 2026Sun KangS Sale—$14.79$1.0Mfiling
May 26, 2026Stepien Thomas MS Sale—$14.79$898Kfiling