Form4insider filings, from the source

Insider · CIK 0001408737

Allison Nagelberg

Files at: HKHC, MNR. On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $4,991 · 1sales $0 · 0net $4,991
$10k$10k$100k$100k$1M$1MbuyssalesJun 28Jul 13Jul 28Aug 13Aug 28Sep 12Sep 28

Reported trades — common stock

TradeReported (ET)CompanySharesAvg priceTotalOwned afterΔ stakeFlags
Sep 18, 2026 PForm 4 →Sep 22, 9:28 am EDTHorizon Kinetics Holding CorpHKHC190$26.27$4,991590+47.5%

Reported trades — derivatives (options, RSUs, warrants)

No reported derivative activity in this period.