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Horizon Common Inc

Disclosed activity across 1 company

Tapewire entity
56426
SEC CIK
0002033370

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Horizon Kinetics Holding CorpHKHC · Entity 128610% ownerMarch 20, 2026March 24, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

Horizon Kinetics Holding Corp

Report date March 20, 2026 · Filed March 24, 2026 · Amendment

Jointly reported with STAHL MURRAY

Amendment: balances below belong to this corrected disclosure, not necessarily a complete replacement of earlier positions.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect249,204 Reported balance After 2026-03-20 transaction · row 1 Amendment: may correct only part of an earlier disclosure.
1 source row

Row 1 · 2026-03-20 · Purchase · Acquired 10 · Balance 249,204

F1: The number of securities beneficially owned following the reported transaction was previously overstated. This amendment corrects the ownership amount to reflect the accurate number of securities beneficially owned after the transaction.

Common StockSEC Table I · non-derivativeIndirectHorizon Common Inc.8,216,801 Reported balance After 2026-03-20 transaction · row 2 Amendment: may correct only part of an earlier disclosure.
1 source row

Row 2 · 2026-03-20 · Purchase · Acquired 25 · Balance 8,216,801

F2: 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.

Common StockSEC Table I · non-derivativeIndirectHorizon Kinetics Hard Assets, LLC135 Reported balance After 2026-03-20 transaction · row 3 Amendment: may correct only part of an earlier disclosure.
1 source row

Row 3 · 2026-03-20 · Purchase · Acquired 18 · Balance 135

F2: 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.

Common StockSEC Table I · non-derivativeIndirectSpouse5 Reported balance Holding disclosure · report date 2026-03-20 · row 4 Amendment: may correct only part of an earlier disclosure.
1 source row

Row 4 · Balance 5

Common StockSEC Table I · non-derivativeIndirectFRMO Corp.823,923 Reported balance Holding disclosure · report date 2026-03-20 · row 5 Amendment: may correct only part of an earlier disclosure.
1 source row

Row 5 · Balance 823,923

F2: 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.

F3: 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.

Common StockSEC Table I · non-derivativeIndirectKinetics Institutional Partners LP6,900 Reported balance Holding disclosure · report date 2026-03-20 · row 6 Amendment: may correct only part of an earlier disclosure.
1 source row

Row 6 · Balance 6,900

F2: 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.

Common StockSEC Table I · non-derivativeIndirectKinetics Partners LP5,810 Reported balance Holding disclosure · report date 2026-03-20 · row 7 Amendment: may correct only part of an earlier disclosure.
1 source row

Row 7 · Balance 5,810

F2: 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.

Common StockSEC Table I · non-derivativeIndirectHorizon Kinetics Asset Management LLC952 Reported balance Holding disclosure · report date 2026-03-20 · row 8 Amendment: may correct only part of an earlier disclosure.
1 source row

Row 8 · Balance 952

F2: 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.

Filing footnotes · ownership attribution and instrument terms

F1: The number of securities beneficially owned following the reported transaction was previously overstated. This amendment corrects the ownership amount to reflect the accurate number of securities beneficially owned after the transaction.

F2: 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.

F3: 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.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
November 21, 2025 Filed Nov 24, 2025 19:22 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 4 $28.25 $113.00
Disclosure

SEC source: 0001437749-25-036119 · rdgdoc.xml · nonDerivative · entry 3

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Horizon Kinetics Hard Assets, LLC

Disclosed balance after: 43

F1 · balance_after: Mr. Stahl exercises discretion over shares of the Issuer and disclaims beneficial ownership except to the extent of his pecuniary interest.

Read SEC document
November 21, 2025 Filed Nov 24, 2025 19:22 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 9 $28.25 $254.25
Disclosure

SEC source: 0001437749-25-036119 · rdgdoc.xml · nonDerivative · entry 2

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Horizon Common Inc.

Disclosed balance after: 8,216,664

F1 · balance_after: Mr. Stahl exercises discretion over shares of the Issuer and disclaims beneficial ownership except to the extent of his pecuniary interest.

Read SEC document
November 21, 2025 Filed Nov 24, 2025 19:22 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 12 $28.25 $339.00
Disclosure

SEC source: 0001437749-25-036119 · rdgdoc.xml · nonDerivative · entry 1

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 248,994

Read SEC document
November 20, 2025 Filed Nov 21, 2025 20:07 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 4 $27.50 $110.00
Disclosure

SEC source: 0001437749-25-035975 · rdgdoc.xml · nonDerivative · entry 3

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Horizon Kinetics Hard Assets, LLC

Disclosed balance after: 39

F1 · balance_after: Mr. Stahl exercises discretion over shares of the Issuer and disclaims beneficial ownership except to the extent of his pecuniary interest.

Read SEC document
November 20, 2025 Filed Nov 21, 2025 20:07 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 9 $27.50 $247.50
Disclosure

SEC source: 0001437749-25-035975 · rdgdoc.xml · nonDerivative · entry 2

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Horizon Common Inc.

Disclosed balance after: 8,216,655

F1 · balance_after: Mr. Stahl exercises discretion over shares of the Issuer and disclaims beneficial ownership except to the extent of his pecuniary interest.

Read SEC document
November 20, 2025 Filed Nov 21, 2025 20:07 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 11 $27.50 $302.50
Disclosure

SEC source: 0001437749-25-035975 · rdgdoc.xml · nonDerivative · entry 1

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 248,982

Read SEC document
September 09, 2025 Filed Sep 10, 2025 15:15 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 4 $38.30 $153.20
Disclosure

SEC source: 0001437749-25-028729 · rdgdoc.xml · nonDerivative · entry 4

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Horizon Kinetics Hard Assets, LLC

Disclosed balance after: 35

F4 · balance_after: Mr. Stahl exercises discretion over shares of the Issuer and disclaims beneficial ownership except to the extent of his pecuniary interest.

Read SEC document
September 09, 2025 Filed Sep 10, 2025 15:15 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 5 $38.30 $191.50
Disclosure

SEC source: 0001437749-25-028729 · rdgdoc.xml · nonDerivative · entry 3

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · FRMO Corp.

Disclosed balance after: 823,923

F2 · balance_after: Mr. Stahl exercises discretion over the shares of the Issuer and owns approximately 16% of those held by FRMO Corp. He disclaims beneficial ownership over the remaining shares.

F3 · balance_after: This purchase includes shares owned by Fromex Equity Corp, which is a wholly owned subsidiary of FRMO Corp.

Read SEC document
September 09, 2025 Filed Sep 10, 2025 15:15 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 7 $38.30 $268.10
Disclosure

SEC source: 0001437749-25-028729 · rdgdoc.xml · nonDerivative · entry 2

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Horizon Common Inc.

Disclosed balance after: 8,216,646

F1 · balance_after: Mr. Stahl exercises discretion over the shares of the Issuer and owns approximately 21% of those held by Horizon Common Inc. He disclaims beneficial ownership over the remaining shares.

Read SEC document
September 09, 2025 Filed Sep 10, 2025 15:15 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 8 $38.30 $306.40
Disclosure

SEC source: 0001437749-25-028729 · rdgdoc.xml · nonDerivative · entry 1

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 248,971

Read SEC document
September 08, 2025 Filed Sep 9, 2025 14:43 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 4 $38.85 $155.40
Disclosure

SEC source: 0001437749-25-028622 · rdgdoc.xml · nonDerivative · entry 4

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Horizon Kinetics Hard Assets, LLC

Disclosed balance after: 31

F4 · balance_after: Mr. Stahl exercises discretion over shares of the Issuer and disclaims beneficial ownership except to the extent of his pecuniary interest.

Read SEC document
September 08, 2025 Filed Sep 9, 2025 14:43 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 5 $38.85 $194.25
Disclosure

SEC source: 0001437749-25-028622 · rdgdoc.xml · nonDerivative · entry 3

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · FRMO Corp.

Disclosed balance after: 823,918

F2 · balance_after: Mr. Stahl exercises discretion over the shares of the Issuer and owns approximately 16% of those held by FRMO Corp. He disclaims beneficial ownership over the remaining shares.

F3 · balance_after: This purchase includes shares owned by Fromex Equity Corp, which is a wholly owned subsidiary of FRMO Corp.

Read SEC document
September 08, 2025 Filed Sep 9, 2025 14:43 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 6 $38.85 $233.10
Disclosure

SEC source: 0001437749-25-028622 · rdgdoc.xml · nonDerivative · entry 2

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Horizon Common Inc.

Disclosed balance after: 8,216,639

F1 · balance_after: Mr. Stahl exercises discretion over the shares of the Issuer and owns approximately 21% of those held by Horizon Common Inc. He disclaims beneficial ownership over the remaining shares.

Read SEC document
September 08, 2025 Filed Sep 9, 2025 14:43 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 10 $38.85 $388.50
Disclosure

SEC source: 0001437749-25-028622 · rdgdoc.xml · nonDerivative · entry 1

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 248,963

Read SEC document
September 05, 2025 Filed Sep 8, 2025 14:29 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 4 $39.00 $156.00
Disclosure

SEC source: 0001437749-25-028532 · rdgdoc.xml · nonDerivative · entry 4

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Horizon Kinetics Hard Assets, LLC

Disclosed balance after: 27

F4 · balance_after: Mr. Stahl exercises discretion over shares of the Issuer and disclaims beneficial ownership except to the extent of his pecuniary interest.

Read SEC document
September 05, 2025 Filed Sep 8, 2025 14:29 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 5 $39.00 $195.00
Disclosure

SEC source: 0001437749-25-028532 · rdgdoc.xml · nonDerivative · entry 3

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · FRMO Corp.

Disclosed balance after: 823,913

F2 · balance_after: Mr. Stahl exercises discretion over the shares of the Issuer and owns approximately 16% of those held by FRMO Corp. He disclaims beneficial ownership over the remaining shares.

F3 · balance_after: This purchase includes shares owned by Fromex Equity Corp, which is a wholly owned subsidiary of FRMO Corp.

Read SEC document
September 05, 2025 Filed Sep 8, 2025 14:29 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 6 $39.00 $234.00
Disclosure

SEC source: 0001437749-25-028532 · rdgdoc.xml · nonDerivative · entry 2

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Horizon Common Inc.

Disclosed balance after: 8,216,633

F1 · balance_after: Mr. Stahl exercises discretion over the shares of the Issuer and owns approximately 21% of those held by Horizon Common Inc. He disclaims beneficial ownership over the remaining shares.

Read SEC document
September 05, 2025 Filed Sep 8, 2025 14:29 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 8 $39.00 $312.00
Disclosure

SEC source: 0001437749-25-028532 · rdgdoc.xml · nonDerivative · entry 1

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 248,953

Read SEC document
September 04, 2025 Filed Sep 5, 2025 14:51 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 4 $39.45 $157.80
Disclosure

SEC source: 0001437749-25-028448 · rdgdoc.xml · nonDerivative · entry 4

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Horizon Kinetics Hard Assets, LLC

Disclosed balance after: 23

F4 · balance_after: Mr. Stahl exercises discretion over shares of the Issuer and disclaims beneficial ownership except to the extent of his pecuniary interest.

Read SEC document
September 04, 2025 Filed Sep 5, 2025 14:51 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 5 $39.45 $197.25
Disclosure

SEC source: 0001437749-25-028448 · rdgdoc.xml · nonDerivative · entry 3

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · FRMO Corp.

Disclosed balance after: 823,908

F2 · balance_after: Mr. Stahl exercises discretion over the shares of the Issuer and owns approximately 16% of those held by FRMO Corp. He disclaims beneficial ownership over the remaining shares.

F3 · balance_after: This purchase includes shares owned by Fromex Equity Corp, which is a wholly owned subsidiary of FRMO Corp.

Read SEC document
September 04, 2025 Filed Sep 5, 2025 14:51 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 6 $39.45 $236.70
Disclosure

SEC source: 0001437749-25-028448 · rdgdoc.xml · nonDerivative · entry 2

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Horizon Common Inc.

Disclosed balance after: 8,216,627

F1 · balance_after: Mr. Stahl exercises discretion over the shares of the Issuer and owns approximately 21% of those held by Horizon Common Inc. He disclaims beneficial ownership over the remaining shares.

Read SEC document
September 04, 2025 Filed Sep 5, 2025 14:51 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 8 $39.45 $315.60
Disclosure

SEC source: 0001437749-25-028448 · rdgdoc.xml · nonDerivative · entry 1

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 248,945

Read SEC document
September 03, 2025 Filed Sep 4, 2025 13:54 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 4 $40.20 $160.80
Disclosure

SEC source: 0001437749-25-028331 · rdgdoc.xml · nonDerivative · entry 4

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Horizon Kinetics Hard Assets, LLC

Disclosed balance after: 19

F4 · balance_after: Mr. Stahl exercises discretion over shares of the Issuer and disclaims beneficial ownership except to the extent of his pecuniary interest.

Read SEC document
September 03, 2025 Filed Sep 4, 2025 13:54 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 5 $40.20 $201.00
Disclosure

SEC source: 0001437749-25-028331 · rdgdoc.xml · nonDerivative · entry 3

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · FRMO Corp.

Disclosed balance after: 823,903

F2 · balance_after: Mr. Stahl exercises discretion over the shares of the Issuer and owns approximately 16% of those held by FRMO Corp. He disclaims beneficial ownership over the remaining shares.

F3 · balance_after: This purchase includes shares owned by Fromex Equity Corp, which is a wholly owned subsidiary of FRMO Corp.

Read SEC document
September 03, 2025 Filed Sep 4, 2025 13:54 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 6 $40.20 $241.20
Disclosure

SEC source: 0001437749-25-028331 · rdgdoc.xml · nonDerivative · entry 2

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Horizon Common Inc.

Disclosed balance after: 8,216,621

F1 · balance_after: Mr. Stahl exercises discretion over the shares of the Issuer and owns approximately 21% of those held by Horizon Common Inc. He disclaims beneficial ownership over the remaining shares.

Read SEC document
September 03, 2025 Filed Sep 4, 2025 13:54 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 8 $40.20 $321.60
Disclosure

SEC source: 0001437749-25-028331 · rdgdoc.xml · nonDerivative · entry 1

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 248,937

Read SEC document
September 02, 2025 Filed Sep 3, 2025 15:55 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 4 $38.00 $152.00
Disclosure

SEC source: 0001437749-25-028232 · rdgdoc.xml · nonDerivative · entry 4

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Horizon Kinetics Hard Assets, LLC

Disclosed balance after: 15

F4 · balance_after: Mr. Stahl exercises discretion over shares of the Issuer and disclaims beneficial ownership except to the extent of his pecuniary interest.

Read SEC document
September 02, 2025 Filed Sep 3, 2025 15:55 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 5 $38.00 $190.00
Disclosure

SEC source: 0001437749-25-028232 · rdgdoc.xml · nonDerivative · entry 3

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · FRMO Corp.

Disclosed balance after: 823,898

F2 · balance_after: Mr. Stahl exercises discretion over the shares of the Issuer and owns approximately 16% of those held by FRMO Corp. He disclaims beneficial ownership over the remaining shares.

F3 · balance_after: This purchase includes shares owned by Fromex Equity Corp, which is a wholly owned subsidiary of FRMO Corp.

Read SEC document
September 02, 2025 Filed Sep 3, 2025 15:55 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 6 $38.00 $228.00
Disclosure

SEC source: 0001437749-25-028232 · rdgdoc.xml · nonDerivative · entry 2

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Horizon Common Inc.

Disclosed balance after: 8,216,615

F1 · balance_after: Mr. Stahl exercises discretion over the shares of the Issuer and owns approximately 21% of those held by Horizon Common Inc. He disclaims beneficial ownership over the remaining shares.

Read SEC document
September 02, 2025 Filed Sep 3, 2025 15:55 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 8 $38.00 $304.00
Disclosure

SEC source: 0001437749-25-028232 · rdgdoc.xml · nonDerivative · entry 1

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 248,929

Read SEC document
August 29, 2025 Filed Sep 2, 2025 18:10 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 2 $38.00 $76.00
Disclosure

SEC source: 0001437749-25-028117 · rdgdoc.xml · nonDerivative · entry 4

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Horizon Kinetics Hard Assets, LLC

Disclosed balance after: 11

F4 · balance_after: Mr. Stahl exercises discretion over shares of the Issuer and disclaims beneficial ownership except to the extent of his pecuniary interest.

Read SEC document
August 29, 2025 Filed Sep 2, 2025 18:10 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 5 $38.00 $190.00
Disclosure

SEC source: 0001437749-25-028117 · rdgdoc.xml · nonDerivative · entry 3

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · FRMO Corp.

Disclosed balance after: 823,893

F2 · balance_after: Mr. Stahl exercises discretion over the shares of the Issuer and owns approximately 16% of those held by FRMO Corp. He disclaims beneficial ownership over the remaining shares.

F3 · balance_after: This purchase includes shares owned by Fromex Equity Corp, which is a wholly owned subsidiary of FRMO Corp.

Read SEC document
August 29, 2025 Filed Sep 2, 2025 18:10 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 6 $38.00 $228.00
Disclosure

SEC source: 0001437749-25-028117 · rdgdoc.xml · nonDerivative · entry 2

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Horizon Common Inc.

Disclosed balance after: 8,216,609

F1 · balance_after: Mr. Stahl exercises discretion over the shares of the Issuer and owns approximately 21% of those held by Horizon Common Inc. He disclaims beneficial ownership over the remaining shares.

Read SEC document
August 29, 2025 Filed Sep 2, 2025 18:10 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 8 $38.00 $304.00
Disclosure

SEC source: 0001437749-25-028117 · rdgdoc.xml · nonDerivative · entry 1

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 248,921

Read SEC document
August 28, 2025 Filed Sep 2, 2025 19:08 UTC Amendment Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 2 $38.00 $76.00
Disclosure

SEC source: 0001437749-25-028126 · rdgdoc.xml · nonDerivative · entry 4

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Horizon Kinetics Hard Assets, LLC

Disclosed balance after: 9

F4 · balance_after: Mr. Stahl exercises discretion over shares of the Issuer and disclaims beneficial ownership except to the extent of his pecuniary interest.

Read SEC document
August 28, 2025 Filed Sep 2, 2025 19:08 UTC Amendment Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 5 $38.00 $190.00
Disclosure

SEC source: 0001437749-25-028126 · rdgdoc.xml · nonDerivative · entry 3

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · FRMO Corp.

Disclosed balance after: 823,888

F2 · balance_after: Mr. Stahl exercises discretion over the shares of the Issuer and owns approximately 16% of those held by FRMO Corp. He disclaims beneficial ownership over the remaining shares.

F3 · balance_after: This purchase includes shares owned by Fromex Equity Corp, which is a wholly owned subsidiary of FRMO Corp.

Read SEC document
August 28, 2025 Filed Sep 2, 2025 19:08 UTC Amendment Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 6 $38.00 $228.00
Disclosure

SEC source: 0001437749-25-028126 · rdgdoc.xml · nonDerivative · entry 2

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Horizon Common Inc.

Disclosed balance after: 8,216,603

F1 · balance_after: Mr. Stahl exercises discretion over the shares of the Issuer and owns approximately 21% of those held by Horizon Common Inc. He disclaims beneficial ownership over the remaining shares.

F5 · ownership.nature: This Form 4/A amends the Form 4 filed on August 29, 2025, to add Horizon Common Inc as an additional reporting person and 10% owner as reflected in the table below and in previous filings.

Read SEC document
August 28, 2025 Filed Sep 2, 2025 19:08 UTC Amendment Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 8 $38.00 $304.00
Disclosure

SEC source: 0001437749-25-028126 · rdgdoc.xml · nonDerivative · entry 1

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 248,961

Read SEC document
August 27, 2025 Filed Sep 2, 2025 19:12 UTC Amendment Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 2 $38.00 $76.00
Disclosure

SEC source: 0001437749-25-028128 · rdgdoc.xml · nonDerivative · entry 4

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Horizon Kinetics Hard Assets, LLC

Disclosed balance after: 7

F4 · balance_after: Mr. Stahl exercises discretion over shares of the Issuer and disclaims beneficial ownership except to the extent of his pecuniary interest.

Read SEC document
August 27, 2025 Filed Sep 2, 2025 19:12 UTC Amendment Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 5 $38.00 $190.00
Disclosure

SEC source: 0001437749-25-028128 · rdgdoc.xml · nonDerivative · entry 3

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · FRMO Corp.

Disclosed balance after: 823,883

F2 · balance_after: Mr. Stahl exercises discretion over the shares of the Issuer and owns approximately 16% of those held by FRMO Corp. He disclaims beneficial ownership over the remaining shares.

F3 · balance_after: This purchase includes shares owned by Fromex Equity Corp, which is a wholly owned subsidiary of FRMO Corp.

Read SEC document
August 27, 2025 Filed Sep 2, 2025 19:12 UTC Amendment Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 6 $38.00 $228.00
Disclosure

SEC source: 0001437749-25-028128 · rdgdoc.xml · nonDerivative · entry 2

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Horizon Common Inc.

Disclosed balance after: 8,216,597

F1 · balance_after: Mr. Stahl exercises discretion over the shares of the Issuer and owns approximately 21% of those held by Horizon Common Inc. He disclaims beneficial ownership over the remaining shares.

F5 · ownership.nature: This Form 4/A amends the Form 4 filed on August 28, 2025, to add Horizon Common Inc as an additional reporting person and 10% owner as reflected in the table below and in previous filings.

Read SEC document
August 27, 2025 Filed Sep 2, 2025 19:12 UTC Amendment Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 8 $38.00 $304.00
Disclosure

SEC source: 0001437749-25-028128 · rdgdoc.xml · nonDerivative · entry 1

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 248,945

Read SEC document
August 26, 2025 Filed Sep 2, 2025 19:10 UTC Amendment Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 2 $38.00 $76.00
Disclosure

SEC source: 0001437749-25-028127 · rdgdoc.xml · nonDerivative · entry 4

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Horizon Kinetics Hard Assets, LLC

Disclosed balance after: 5

F4 · balance_after: Mr. Stahl exercises discretion over shares of the Issuer and disclaims beneficial ownership except to the extent of his pecuniary interest.

Read SEC document
August 26, 2025 Filed Sep 2, 2025 19:10 UTC Amendment Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 5 $38.00 $190.00
Disclosure

SEC source: 0001437749-25-028127 · rdgdoc.xml · nonDerivative · entry 3

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · FRMO Corp.

Disclosed balance after: 823,878

F2 · balance_after: Mr. Stahl exercises discretion over the shares of the Issuer and owns approximately 16% of those held by FRMO Corp. He disclaims beneficial ownership over the remaining shares.

F3 · balance_after: This purchase includes shares owned by Fromex Equity Corp, which is a wholly owned subsidiary of FRMO Corp.

Read SEC document
August 26, 2025 Filed Sep 2, 2025 19:10 UTC Amendment Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 6 $38.00 $228.00
Disclosure

SEC source: 0001437749-25-028127 · rdgdoc.xml · nonDerivative · entry 2

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Horizon Common Inc.

Disclosed balance after: 8,216,591

F1 · balance_after: Mr. Stahl exercises discretion over the shares of the Issuer and owns approximately 21% of those held by Horizon Common Inc. He disclaims beneficial ownership over the remaining shares.

F5 · ownership.nature: This Form 4/A amends the Form 4 filed on August 27, 2025, to add Horizon Common Inc as an additional reporting person and 10% owner as reflected in the table below and in previous filings.

Read SEC document
August 26, 2025 Filed Sep 2, 2025 19:10 UTC Amendment Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 8 $38.00 $304.00
Disclosure

SEC source: 0001437749-25-028127 · rdgdoc.xml · nonDerivative · entry 1

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 248,929

Read SEC document
August 25, 2025 Filed Aug 26, 2025 18:47 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 2 $38.00 $76.00
Disclosure

SEC source: 0001437749-25-027747 · rdgdoc.xml · nonDerivative · entry 4

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Horizon Kinetics Hard Assets, LLC

Disclosed balance after: 3

F4 · balance_after: Mr. Stahl exercises discretion over shares of the Issuer and disclaims beneficial ownership except to the extent of his pecuniary interest.

Read SEC document
August 25, 2025 Filed Aug 26, 2025 18:47 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 5 $38.00 $190.00
Disclosure

SEC source: 0001437749-25-027747 · rdgdoc.xml · nonDerivative · entry 3

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · FRMO Corp.

Disclosed balance after: 823,873

F2 · balance_after: Mr. Stahl exercises discretion over the shares of the Issuer and owns approximately 16% of those held by FRMO Corp. He disclaims beneficial ownership over the remaining shares.

F3 · balance_after: This purchase includes shares owned by Fromex Equity Corp, which is a wholly owned subsidiary of FRMO Corp.

Read SEC document
August 25, 2025 Filed Aug 26, 2025 18:47 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 6 $38.00 $228.00
Disclosure

SEC source: 0001437749-25-027747 · rdgdoc.xml · nonDerivative · entry 2

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Horizon Common Inc.

Disclosed balance after: 8,216,585

F1 · balance_after: Mr. Stahl exercises discretion over the shares of the Issuer and owns approximately 21% of those held by Horizon Common Inc. He disclaims beneficial ownership over the remaining shares.

Read SEC document
August 25, 2025 Filed Aug 26, 2025 18:47 UTC Horizon Kinetics Holding Corp HKHC · Entity 1286 PurchaseCommon Stock 8 $38.00 $304.00
Disclosure

SEC source: 0001437749-25-027747 · rdgdoc.xml · nonDerivative · entry 1

STAHL MURRAY · CIK 0001207097 · Director · CEO and CIO · 10% owner

Horizon Common Inc · CIK 0002033370 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 248,889

Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.