Sphere Entertainment's three largest insider shareholders as of September 29, 2026 are James Lawrence Dolan (Executive Chairman And Ceo, 1.03Mn shares), Andrea Greenberg (President/Ceo Msg Networks, 97.56K shares), David Granville-Smith (Executive Vice President, 94.83K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | James Lawrence Dolan | Executive Chairman And Ceo | 1,031,133 | 0 | 1,031,133 | 77.7% | 17 Sep, 2026 |
| 2 | Andrea Greenberg | President/Ceo Msg Networks | 97,558 | 0 | 97,558 | 7.4% | 14 Mar, 2025 |
| 3 | David Granville-Smith | Executive Vice President | 94,826 | 0 | 94,826 | 7.1% | 17 Sep, 2026 |
| 4 | Jennifer Koester | President Coo, Sphere | 54,207 | 0 | 54,207 | 4.1% | 17 Sep, 2026 |
| 5 | Laura Franco | Evp General Counsel | 11,017 | 0 | 11,017 | 0.8% | 17 Sep, 2025 |
| 6 | Philip Gerard D'Ambrosio | Svp And Treasurer | 10,126 | 0 | 10,126 | 0.8% | 26 Sep, 2022 |
| 7 | David F. Byrnes | Evp, Cfo Treasurer | 7,308 | 0 | 7,308 | 0.6% | 17 Sep, 2024 |
| 8 | Ryan Thomas Dolan | Director | 5,662 | 0 | 5,662 | 0.4% | 17 Sep, 2026 |
| 9 | Robert H. Langer | Evp, Cfo Treasurer | 5,232 | 0 | 5,232 | 0.4% | 17 Mar, 2026 |
| 10 | Charles F Dolan | Director, TenPercentOwner, Other | 5,079 | 0 | 5,079 | 0.4% | 19 Mar, 2024 |
| 11 | Gregory Brunner | Svp, Controller Pao | 2,292 | 0 | 2,292 | 0.2% | 17 Sep, 2025 |
| 12 | Jamal H Haughton | Evp General Counsel | 1,311 | 0 | 1,311 | 0.1% | 19 Sep, 2022 |
| 13 | Gautam Ranji | Evp, Cfo Treasurer | 867 | 0 | 867 | 0.1% | 06 Nov, 2023 |
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 |
|---|---|---|---|---|---|---|---|---|
| 15 Sep, 2026 | Jennifer Koester | President Coo, Sphere | Acquired M | 11,988 | $0.00 | $0 | 42,906 | Direct |
| 15 Sep, 2026 | James Lawrence Dolan | Executive Chairman And Ceo | Acquired M | 26,897 | $0.00 | $0 | 1,005,365 | Direct |
| 15 Sep, 2026 | David Granville-Smith | Executive Vice President | Acquired M | 46,742 | $0.00 | $0 | 103,206 | Direct |
| 15 Sep, 2026 | Ryan Thomas Dolan | Director | Acquired M | 269 | $0.00 | $0 | 4,328 | Direct |
| 15 Sep, 2026 | David Granville-Smith | Executive Vice President | Acquired M | 8,966 | $0.00 | $0 | 112,172 | Direct |
| 15 Sep, 2026 | Jennifer Koester | President Coo, Sphere | Acquired M | 6,829 | $0.00 | $0 | 49,735 | Direct |
| 15 Sep, 2026 | Ryan Thomas Dolan | Director | Acquired M | 275 | $0.00 | $0 | 4,603 | Direct |
| 15 Sep, 2026 | James Lawrence Dolan | Executive Chairman And Ceo | Disposed F | 13,730 | $144.12 | $1.98Mn | 991,635 | Direct |
| 15 Sep, 2026 | David Granville-Smith | Executive Vice President | Acquired M | 3,213 | $0.00 | $0 | 115,385 | Direct |
| 15 Sep, 2026 | James Lawrence Dolan | Executive Chairman And Ceo | Acquired M | 80,689 | $0.00 | $0 | 1,072,324 | Direct |
| 15 Sep, 2026 | Ryan Thomas Dolan | Director | Acquired M | 321 | $0.00 | $0 | 4,924 | Direct |
| 15 Sep, 2026 | Jennifer Koester | President Coo, Sphere | Acquired M | 8,269 | $0.00 | $0 | 58,004 | Direct |
| 15 Sep, 2026 | David Granville-Smith | Executive Vice President | Disposed F | 32,582 | $144.12 | $4.70Mn | 82,803 | Direct |
| 15 Sep, 2026 | Jennifer Koester | President Coo, Sphere | Disposed F | 13,826 | $144.12 | $1.99Mn | 44,178 | Direct |
| 15 Sep, 2026 | James Lawrence Dolan | Executive Chairman And Ceo | Disposed F | 41,191 | $144.12 | $5.94Mn | 1,031,133 | Direct |
| 15 Sep, 2026 | Ryan Thomas Dolan | Director | Disposed F | 309 | $144.12 | $44.53K | 4,615 | Direct |
| 15 Sep, 2026 | David Granville-Smith | Executive Vice President | Acquired M | 26,897 | $0.00 | $0 | 109,700 | Direct |
| 15 Sep, 2026 | Ryan Thomas Dolan | Director | Acquired M | 807 | $0.00 | $0 | 5,422 | Direct |
| 15 Sep, 2026 | Jennifer Koester | President Coo, Sphere | Acquired M | 20,487 | $0.00 | $0 | 64,665 | Direct |
| 15 Sep, 2026 | Ryan Thomas Dolan | Director | Acquired M | 825 | $0.00 | $0 | 6,247 | Direct |