As of September 29, 2026, Horizon Kinetics Holding's top three insider holders are Murray Stahl (Ceo And Cio, 8.47Mn shares), Capital Management, Llc Maran (TenPercentOwner, 4.40Mn shares), Mark E Goldstein (Cob/President/Ceo, 2.58Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Murray Stahl | Ceo And Cio | 249,214 | 8,216,936 | 8,466,150 | 50.1% | 24 Mar, 2026 |
| 2 | Capital Management, Llc Maran | TenPercentOwner | 0 | 4,404,150 | 4,404,150 | 26.1% | 18 Jul, 2023 |
| 3 | Mark E Goldstein | Cob/President/Ceo | 2,584,538 | 0 | 2,584,538 | 15.3% | 04 Apr, 2022 |
| 4 | Peter Doyle | Vice President | 880,682 | 0 | 880,682 | 5.2% | 06 Sep, 2024 |
| 5 | Partners Fund, Lp Maran | Other | 236,066 | 0 | 236,066 | 1.4% | 23 Dec, 2025 |
| 6 | Daniel J Roller | Director | 110,000 | 0 | 110,000 | 0.7% | 27 Aug, 2026 |
| 7 | R. Rimmy Malhotra | Director | 100,000 | 0 | 100,000 | 0.6% | 15 May, 2023 |
| 8 | Michael B. Hyman | Senior Vice President, Sales | 65,837 | 0 | 65,837 | 0.4% | 27 Oct, 2022 |
| 9 | David M Arndt | Chief Financial Officer | 19,015 | 0 | 19,015 | 0.1% | 10 Nov, 2021 |
| 10 | Tisha Pedrazzini | President | 15,000 | 0 | 15,000 | 0.1% | 03 Mar, 2022 |
| 11 | Brent D Rosenthal | Director | 4,450 | 0 | 4,450 | 0.0% | 25 Aug, 2026 |
| 12 | Alice C Brennan | Director | 2,000 | 0 | 2,000 | 0.0% | 03 Sep, 2026 |
| 13 | Allison Nagelberg | Director | 590 | 0 | 590 | 0.0% | 22 Sep, 2026 |
| 14 | Mark Herndon | Chief Financial Officer | 550 | 0 | 550 | 0.0% | 20 Aug, 2026 |
| 15 | Jay H Kesslen | General Counsel And Secretary | 350 | 0 | 350 | 0.0% | 26 Nov, 2024 |
| 16 | Grimaldi Russell | Cco Assoc General Counsel | 132 | 0 | 132 | 0.0% | 19 Nov, 2024 |
| 17 | Alun Williams | Chief Operating Officer | 50 | 0 | 50 | 0.0% | 20 Nov, 2024 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 18 Sep, 2026 | Allison Nagelberg | Director | Acquired P | 190 | $26.27 | $4.99K | 590 | Direct |
| 02 Sep, 2026 | Alice C Brennan | Director | Acquired P | 200 | $25.92 | $5.18K | 2,000 | Direct |
| 28 Aug, 2026 | Alice C Brennan | Director | Acquired P | 200 | $26.20 | $5.24K | 1,800 | Direct |
| 27 Aug, 2026 | Alice C Brennan | Director | Acquired P | 200 | $26.00 | $5.20K | 1,600 | Direct |
| 26 Aug, 2026 | Daniel J Roller | Director | Acquired P | 500 | $26.50 | $13.25K | 10,000 | Direct |
| 24 Aug, 2026 | Brent D Rosenthal | Director | Acquired P | 2,000 | $27.00 | $54.00K | 4,450 | Direct |
| 24 Aug, 2026 | Alice C Brennan | Director | Acquired P | 200 | $26.87 | $5.37K | 1,200 | Direct |
| 19 Aug, 2026 | Mark Herndon | Chief Financial Officer | Acquired P | 50 | $26.50 | $1.33K | 350 | Direct |
| 20 Aug, 2026 | Mark Herndon | Chief Financial Officer | Acquired P | 200 | $26.75 | $5.35K | 550 | Direct |
| 20 May, 2026 | Brent D Rosenthal | Director | Acquired P | 700 | $27.85 | $19.50K | 2,450 | Direct |
| 20 May, 2026 | Mark Herndon | Chief Financial Officer | Acquired P | 100 | $27.85 | $2.79K | 300 | Direct |
| 20 Mar, 2026 | Murray Stahl | Ceo And Cio | Acquired P | 10 | $34.60 | $346 | 249,204 | Direct |
| 20 Mar, 2026 | Murray Stahl | Ceo And Cio | Acquired P | 10 | $34.60 | $346 | 249,214 | Direct |
| 20 Mar, 2026 | Murray Stahl | Ceo And Cio | Acquired P | 25 | $34.60 | $865 | 8,216,801 | Indirect |
| 20 Mar, 2026 | Murray Stahl | Ceo And Cio | Acquired P | 25 | $34.60 | $865 | 8,216,801 | Indirect |
| 20 Mar, 2026 | Murray Stahl | Ceo And Cio | Acquired P | 18 | $34.60 | $623 | 135 | Indirect |
| 20 Mar, 2026 | Murray Stahl | Ceo And Cio | Acquired P | 18 | $34.60 | $623 | 135 | Indirect |
| 20 Mar, 2026 | Allison Nagelberg | Director | Acquired P | 150 | $33.96 | $5.09K | 400 | Direct |
| 19 Mar, 2026 | Murray Stahl | Ceo And Cio | Acquired P | 46 | $34.06 | $1.57K | 249,194 | Direct |
| 19 Mar, 2026 | Murray Stahl | Ceo And Cio | Acquired P | 25 | $34.06 | $852 | 8,216,776 | Indirect |