Horizon Common Inc. Reports Insider Ownership Change

TL;DR

**Insider ownership changed at Horizon Common, but the filing lacks transaction specifics.**

AI Summary

This Form 4 filing, submitted on March 24, 2026, indicates a change in beneficial ownership of securities for Horizon Common Inc. (CIK: 0002033370), with Stahl Murray (CIK: 0001207097) also listed as a reporting entity. While the filing confirms a change occurred on March 20, 2026, it does not provide specific details on the transaction, such as the number of shares bought or sold, or the dollar amounts involved. For investors, this means there's an event of insider activity, but without the specifics, it's difficult to gauge the sentiment or impact on the stock.

Why It Matters

This filing signals insider activity, which can sometimes indicate management's confidence (or lack thereof) in the company's future, but without transaction details, its significance is limited.

Risk Assessment

Risk Level: low — The filing indicates a change in ownership but provides no details that would suggest a significant immediate risk or opportunity.

Analyst Insight

Investors should note that insider activity occurred but defer any investment decisions until more detailed transaction information becomes available, as this filing lacks specifics on the nature and size of the ownership change.

Key Players & Entities

• Horizon Common Inc. (company) — Reporting entity for the change in beneficial ownership of securities
• Stahl Murray (person) — Also listed as a reporting entity in the Form 4 filing
• Horizon Kinetics Holding Corp (company) — Issuer of the securities
• March 24, 2026 (date) — Filing Date and Accepted Date of the Form 4
• March 20, 2026 (date) — Period of Report for the change in beneficial ownership

FAQ

Filing Documents

• primary_doc.html (4)
• primary_doc.xml (4) — 12KB
• 0001437749-26-009521.txt ( ) — 14KB

From the Filing

SEC FORM 4 SEC Form 4 FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 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 * STAHL MURRAY (Last) (First) (Middle) 470 PARK AVENUE SOUTH 8TH FLOOR SOUTH (Street) NEW YORK NEW YORK 10016 (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 X 10% Owner X Officer (give title below) Other (specify below) CEO and CIO 2a. Foreign Trading Symbol 3. Date of Earliest Transaction (Month/Day/Year) 03/20/2026 6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X 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 03/20/2026 P 10 A $ 34.6 249,214 D Common Stock 03/20/2026 P 25 A $ 34.6 8,216,801 (1) I Horizon Common Inc. Common Stock 03/20/2026 P 18 A $ 34.6 135 (1) I Horizon Kinetics Hard Assets, LLC Common Stock 5 I Spouse Common Stock 823,923 (1) (2) I FRMO Corp. Common Stock 6,900 (1) I Kinetics Institutional Partners LP Common Stock 5,810 (1) I Kinetics Partners LP Common Stock 952 (1) I Horizon Kinetics Asset Management LLC 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 1. Name and Address of Reporting Person * STAHL MURRAY (Last) (First) (Middle) 470 PARK AVENUE SOUTH 8TH FLOOR SOUTH (Street) NEW YORK NEW YORK 10016 (City) (State) (Zip) UNITED STATES (Country) Relationship of Reporting Person(s) to Issuer X Director X 10% Owner X Officer (give title below) Other (specify below) CEO and CIO 1. Name and Address of Reporting Person * Horizon Common Inc (Last) (First) (Middle) 470 PARK AVENUE SOUTH 8TH FLOOR SOUTH (Street) NEW YORK NEW YORK 10016 (City) (State) (Zip) UNITED STATES (Country) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below) Explanation of Responses: 1. Mr. Stahl serves as the Chief Executive Officer and Chief Investment Strategist for Horizon Kinetics Asset Management LLC, a wholly owned subsidiary of Horizon Kinetics Holding Corporation (HKHC), and also serves as the Chief Executive Officer of Horizon Common, Inc. (HCI), a large shareholder of HKHC. Mr. Stahl exercises discretion over shares of the Issuer held by HKHC and HCI and disclaims beneficial ownership except to the extent of his pecuniary interest. 2. Mr. Stahl serves as the Chief Executive Officer for FRMO Corp. (FRMO) and exercises discretion over shares of the Issuer. He disclaims beneficial ownership except to the extent of his pecuniary interest. The reported ownership includes shares held by Fromex Corp., a wholly owned subsidiary of FRMO. Jay Kesslen, attorney-in-fact 03/24/2026 ** Signature of Reporting Person Date Reminder: Report on a separate line for each class of securi

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