Horizon Kinetics (HKHC) director lifts stake to 1,600 shares

Rhea-AI Filing Summary

For Horizon Kinetics Holding Corp (HKHC), director Alice C. Brennan reported an open-market purchase of 200 shares of common stock on 2026-08-27 at $26.00 per share. Following this transaction, she directly holds 1,600 shares of HKHC common stock.

Insider Trade Summary

Net Buyer: 200 shares

Net Buy 1 txn

Insider Brennan Alice C

Role Director

Bought 200 shs ($5K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	200	$26.00	$5K

Holdings After Transaction: Common Stock — 1,600 shares (Direct)

Key Figures

Shares purchased: 200 shares of Common Stock Purchase price: $26.00 per share Shares owned after transaction: 1,600 shares of Common Stock

3 metrics

Shares purchased 200 shares of Common Stock Open-market purchase on 2026-08-27

Purchase price $26.00 per share Price paid for the 200 shares on 2026-08-27

Shares owned after transaction 1,600 shares of Common Stock Direct ownership following the 2026-08-27 purchase

Key Terms

Form 4, Common Stock, open market or private transaction

3 terms

Form 4 regulatory

"INSIDER FILING DATA (Form 4)"

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

"security_title": "Common Stock""

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.

open market or private transaction financial

"transaction_code_description": "Purchase in open market or private transaction""

FAQ

What insider transaction did HKHC director Alice C. Brennan report?

Alice C. Brennan reported a purchase of 200 shares of Horizon Kinetics Holding Corp common stock on 2026-08-27 at $26.00 per share, increasing her direct holdings to 1,600 shares.

How many HKHC shares does Alice C. Brennan own after this Form 4?

After the reported transaction, Alice C. Brennan directly owns 1,600 shares of Horizon Kinetics Holding Corp common stock.

Was the HKHC insider transaction a buy or a sell?

The reported HKHC insider transaction was a buy. Alice C. Brennan purchased 200 shares of common stock coded as a “P” open-market or private purchase.

What price did the HKHC director pay per share in this Form 4 transaction?

She paid $26.00 per share for the 200 shares of Horizon Kinetics Holding Corp common stock purchased on 2026-08-27.

Is this HKHC Form 4 transaction under a Rule 10b5-1 trading plan?

The filing indicates the Rule 10b5-1 checkbox is not affirmed (aff_10b5_one is false), so this transaction is not reported as made pursuant to a Rule 10b5-1 trading plan.

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

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Available on EDGAR 08/28/2026 - 02:17 PM Accepted by SEC EDGAR 08/28/2026 - 02:16 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED 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^*

Brennan Alice C

(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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/27/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form 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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	08/27/2026		P		200	A	$26	1,600	D

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

	/s/ Jay Kesslen, attorney-in-fact	08/28/2026
	** Signature of Reporting Person	Date
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)