TOP TIERMARKET NEWSWIRE
SEC Form 4 history

ZEROSTACK CORP TEX (ZSTK) insider trades

ZEROSTACK CORP TEX (ZSTK) insider trading activity (SEC Form 4). Over the trailing 90 days, ZSTK insiders filed 1 purchases totalling $3.5M and 1 sales totalling $8K — net BUYING of $3.5M. Most recent filing: Aug 21, 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)
1
$3.5M
Sells (90d)
1
$8K
Net (90d)
+$3.5M
net buying
Most recent
Aug 21, 2026

Recent transactions

FiledInsiderRoleTypeSharesPriceValue
Aug 21, 2026Rong RudyPresS Sale—$7.57$8Kfiling
Jul 20, 2026Heinrich MichaelExec COBP Purchase—$0.75$3.5Mfiling