STOCK TITAN

Horizon Kinetics director buys 2,000 shares at $27

(Neutral)
(Positive)
Form Type
4

Rhea-AI Filing Summary

Horizon Kinetics Holding Corp (HKHC) director Brent D. Rosenthal reported a purchase of 2,000 shares of Common Stock on August 24, 2026 in a purchase in open market or private transaction at $27.00 per share. Following this transaction, his directly owned holdings total 4,450 shares of HKHC common stock.

Positive

  • None.

Negative

  • None.
Insider Rosenthal Brent D
Role Director
Bought 2,000 shs ($54K)
Type Security Shares Price Value
Purchase Common Stock 2,000 $27.00 $54K
Holdings After Transaction: Common Stock — 4,450 shares (Direct)
Shares purchased 2,000 shares of Common Stock Non-derivative purchase on August 24, 2026
Purchase price per share $27.00 per share Price for the 2,000-share Common Stock purchase
Shares owned after transaction 4,450 shares Directly owned Common Stock following the reported purchase
Buy transactions reported 1 transaction; 2,000 shares net buy Summary of non-derivative transactions in this Form 4
Form 4 regulatory
"director reported the transaction on a Form 4 insider filing"
Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.
Common Stock financial
"purchase of 2,000 shares of Common Stock at $27.00 per share"
Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.
purchase in open market or private transaction financial
"coded as a purchase in open market or private transaction"

FAQ

What insider transaction did HKHC director Brent D. Rosenthal report?

Brent D. Rosenthal reported buying 2,000 shares of Horizon Kinetics Holding Corp (HKHC) Common Stock on August 24, 2026 in a purchase in open market or private transaction at $27.00 per share.

How many HKHC shares does Brent D. Rosenthal hold after this Form 4 transaction?

After the reported transaction, Brent D. Rosenthal directly owns 4,450 shares of Horizon Kinetics Holding Corp (HKHC) Common Stock, as disclosed in the Form 4 filing.

Was the August 24, 2026 HKHC Form 4 transaction a purchase or a sale?

The August 24, 2026 Form 4 for Horizon Kinetics Holding Corp (HKHC) reports a purchase transaction. Brent D. Rosenthal acquired 2,000 shares of Common Stock in a purchase in open market or private transaction.

What price was paid per share in the latest HKHC insider purchase?

In the latest reported insider purchase of Horizon Kinetics Holding Corp (HKHC), Brent D. Rosenthal paid $27.00 per share for 2,000 shares of Common Stock on August 24, 2026.

Does the HKHC Form 4 indicate any Rule 10b5-1 trading plan use?

No. The Form 4 for Horizon Kinetics Holding Corp (HKHC) has its Rule 10b5-1 trading plan affirmation box unchecked, so the reported August 24, 2026 transaction is not identified as being made under a Rule 10b5-1 plan.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Learn about SEC filing dates
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Rosenthal Brent D

(Last)(First)(Middle)
C/O HORIZON KINETICS LLC
1270 AVENUE OF THE AMERICAS 27TH FLOOR

(Street)
NEW YORK NEW YORK 10020

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Horizon Kinetics Holding Corp [ HKHC ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
08/24/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock08/24/2026P2,000A$274,450D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
/s/ Jay Kesslen, attorney-in-fact08/25/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)