Transaction · 0001437749-26-028621

Herndon Mark

Herndon Mark, CFO, reported an open-market or private purchase at Horizon Kinetics Holding Corp involving 200.000000 shares for an estimated $5350.00. Reported holdings after the transaction were 550.000000 shares. A 10b5-1 reference was not detected in the stored filing text.

Open-market buySEC transaction code PCFO

HKHCHorizon Kinetics Holding Corp

Filing timeAug 20

Trade dateAug 20, 2026

Filing · SECView on SEC

InsiderProfile

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows

Price at filing

—

Pre-filing

1mo ago1w ago1d ago

Returns since

7d30d90d180d1y

HKHC price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards

HKHC since 2026-08-20Filed 15 days ago · 30 days of pre-filing context shaded

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Filing datePost-filing windows (7d, 30d, 90d, 180d, 1y)30 days of pre-filing context

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative

Type: Buy
Identifier: 0001437749-26-028621
Transaction date: Aug 20, 2026
Shares: 200 sh
Estimated value: $535k
Holdings after: 550 sh

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $10.0MLarge $100M

CFO Buy Direct Ownership Large Holdings Increase

+40score

Filing-only score

+40

Compact filing score computed from stored Form 4 facts. Version v1.

Strong filing signal

This filing has a high positive filing-only score. It may deserve closer research, but it is not an investment recommendation.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

Chief Financial Officer

Officer YesDirector No10% NoOther No

Footnotes & amended

No footnotes recorded.

Original filing · 0001437749-26-028621

Related transactions

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Same reporting owner

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