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Insider · CIK 0001754318

Mark Herndon

cfoofficer

Files at HKHC (Horizon Kinetics Holding Corp). First filing Jun 5, 2025, latest Nov 21, 2025.

Track record
Not enough history
Fewer than three past buys with six months of prices.
Median 6-month excess
-
after past buys, n = 0
Hit rate
-
past buys that beat the index over 6 months
Open-market trades
2 / 0
$3,704 bought, $0 sold

Where the trades landed

Last year at the company this insider has traded most, with each buy and sell on the bar it happened.

HKHC: Horizon Kinetics Holding Corp

HKHCOct 9, 2026 · close 20.49

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™

Signals

This insider’s open-market buys and sells, scored.

ScoreCompanyValueHoldingsPrice contextFiled
65Notable
HKHCbuy 3
Horizon Kinetics Holding Corp
$2,900
100 shares
+500%0% from low-42% from high
42Moderate
HKHCbuy 2
Horizon Kinetics Holding Corp
$804
20 shares
-+111% from low-22% from high

Transactions

Every row this insider has filed, newest first.

DateCompanyTransactionSharesPriceValueHoldings afterFiled
Nov 20, 2025HKHC
Horizon Kinetics Holding Corp
POpen-market purchase
Common Stock
+100$29.00$2,900120Nov 21, 2025
Jun 4, 2025HKHC
Horizon Kinetics Holding Corp
POpen-market purchase
Common Stock
+20$40.18$80420Jun 5, 2025

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Mark Herndon: insider trades and track record | InsiderTell