| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Kathleen M. Dolan 2012 Descendants Trust | Member of 13(d) Group | C/O RICHARD BACCARI, MLC VENTURES LLC, PO BOX 1014, YORKTOWN HEIGHTS | KATHLEEN M. DOLAN 2012 DESCENDANTS TRUST By: /s/ Brian G. Sweeney, Attorney-in-fact | 2025-09-10 | 0001564761 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | SPHR | Class B Common Stock | Other | +56.9K | 56.9K | Sep 8, 2025 | Class A Common Stock | 56.9K | Direct | F1, F2 |
| Id | Content |
|---|---|
| F1 | Sphere Entertainment Co. Class B Common Stock ("Class B Common Stock") is convertible at the option of the holder on a share for share basis into Sphere Entertainment Co. Class A Common Stock ("Class A Common Stock"). |
| F2 | On September 8, 2025, the Reporting Person received the shares of Class B Common Stock in partial repayment of a promissory note. For purposes of the repayment, the shares were valued at $52.2025 per share, the mean of the high and low trading price for the Class A Common Stock on September 8, 2025. |