Form 4 - Statement of changes in beneficial ownership of securities:
SEC Accession No. 0001437749-25-035929
Filing Date
2025-11-21
Accepted
2025-11-21 11:39:23
Documents
1
Period of Report
2025-11-20

Document Format Files

Seq Description Document Type Size
1 FORM 4 rdgdoc.html 4  
1 FORM 4 rdgdoc.xml 4 2779
  Complete submission text file 0001437749-25-035929.txt   4386
Mailing Address 470 PARK AVE S. NEW YORK NY 10016
Business Address 470 PARK AVE S. NEW YORK NY 10016 6462912300
Horizon Kinetics Holding Corp (Issuer) CIK: 0000088000 (see all company filings)

EIN.: 840920811 | State of Incorp.: DE | Fiscal Year End: 1231
SIC: 6282 Investment Advice
(CF Office: 02 Finance)

Mailing Address C/O SAFEGUARD SCIENTIFICS, INC. 170 N. RADNOR-CHESTER ROAD, SUITE 200 RADNOR PA 19087
Business Address
Herndon Mark (Reporting) CIK: 0001754318 (see all company filings)

Type: 4 | Act: 34 | File No.: 001-13458 | Film No.: 251505829