Mark Herndon insider trades

Open-market stock purchases and sales by Mark Herndon, Chief Financial Officer at Horizon Kinetics Holding Corp, from SEC Form 4 filings since Oct 23, 2018.

Track record: 0% of 2 scored buys are up 5% or more since purchase, averaging -8%.

Recent trades

DateStockTradeValue
Aug 20, 2026HKHC Horizon Kinetics Holding CorpBought$5.3K
Aug 19, 2026HKHC Horizon Kinetics Holding CorpBought$1.3K
May 20, 2026HKHC Horizon Kinetics Holding CorpBought$2.8K
Mar 18, 2026HKHC Horizon Kinetics Holding CorpBought$2.6K
Nov 20, 2025HKHC Horizon Kinetics Holding CorpBought$2.9K

Companies traded

  • HKHC Horizon Kinetics Holding Corp: 6 buys, last Aug 20, 2026
  • SFE Safeguard Scientifics Inc: 2 buys, last Jan 17, 2023

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