Company profile

Horizon Kinetics Holding Corp Insider Trading

HKHC

Every SEC Form 4 insider trading filing for Horizon Kinetics Holding Corp (HKHC) since April 2023 — open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC. Why 2023?

Exchange
OTC
Sector
Investment Advice
CIK
0000088000
Filings
102
Insiders
19
Last filing
2026-08-20

Activity summary

Recent insider activity is bullish. Over the last 30 days, 2 insiders purchased shares (net $7K). Buying was led by Herndon Mark.

Three year balance

Buy and sell value by quarter, Q2 22 to Q3 26. Horizon Kinetics Holding Corp insiders are net buyers across the period shown.

Q2 22Q2 23Q3 23Q3 24Q4 24Q2 25Q3 25Q4 25Q1 26Q2 26Q3 26

Bars below the rule are sales, above are purchases. Largest quarter on the chart is $901K.

90 day insight

Over the last 90 days, Horizon Kinetics Holding Corp insiders bought $7K across 2 transactions with no open-market sales.

  • Most active insider: Herndon Mark with 2 transactions totaling $7K.
  • Largest single purchase: $5K by Herndon Mark on Aug 20, 2026.

Activity skews bullish — buys outpace sales.

Insider Transactions

Sourced from SEC EDGAR Form 4 filings. Updated hourly.

DateInsiderCompanyTypeSharesPriceValue
Aug 20, 2026Herndon MarkHKHC
Purchase
200$26.75$5K
Aug 19, 2026Herndon MarkHKHC
Purchase
50$26.50$1K
May 20, 2026Herndon MarkHKHC
Purchase
100$27.85$3K
May 20, 2026Rosenthal Brent DHKHC
Purchase
700$27.85$19K
Mar 20, 2026Stahl MurrayHKHC
Purchase
10$34.60$346

45 more transactions hidden

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Top insiders

By total value filed.

Rosenthal Brent D2 filings+$44K
Herndon MarkChief Financial Officer4 filings+$12K
Stahl MurrayPresident and CEO39 filings+$12K
Nagelberg AllisonDirector1 filing+$5K
Horizon Common Inc10% owner2 filings+$494