Form 4 Tracker
Mark Herndon

Chief Financial Officer · 2 filings · Latest: May 20, 2026

Horizon Kinetics Holding Corp
TickerOwnerRelationshipDateTransactionCost#SharesValue ($)#Shares TotalSEC Filing
HKHC
Mark HerndonChief Financial OfficerMay 20, 2026
Purchase
$27.85100$2.8K300
HKHC
Mark HerndonChief Financial OfficerMar 18, 2026
Purchase
$33.0380$2.6K200
Mark Herndon — Insider Trading Activity | LevelFields AI