X0609 4 2026-09-15 0001795250 Sphere Entertainment Co. SPHR 0000933028 DOLAN JAMES LAWRENCE false TWO PENNSYLVANIA PLAZA NEW YORK NY 10121 true true true true Executive Chairman and CEO Member of 13(d) Group 0001480991 Dolan Kristin A false TWO PENNSYLVANIA PLAZA NEW YORK NY 10121 true false true false false Class A Common Stock 2026-09-15 4 M false 26897 0 A 1005365 D Class A Common Stock 2026-09-15 4 F false 13730 144.12 D 991635 D Class A Common Stock 2026-09-15 4 M false 80689 0 A 1072324 D Class A Common Stock 2026-09-15 4 F false 41191 144.12 D 1031133 D Class A Common Stock 14119 I By Spouse Class A Common Stock 746 I By Minor Children and Household Members Restricted Stock Units 2026-09-15 4 M false 26897 0 D 2026-09-15 Class A Common Stock 26897 0 D Performance Restricted Stock Units 2026-09-15 4 M false 80689 0 D 2026-09-15 Class A Common Stock 80689 0 D Each restricted stock unit ("RSU") was granted on September 1, 2023 under the Sphere Entertainment Co. ("SPHR") 2020 Employee Stock Plan, as amended (the "2020 Employee Stock Plan"), and represents a right to receive one share of Class A Common Stock or the cash equivalent thereof. One-third of the RSUs vested and were settled on September 13, 2024. One-third of the RSUs vested and were settled on September 15, 2025. The remaining one-third of the RSUs vested and were settled on September 15, 2026. Includes shares held jointly with spouse. Securities held directly by James L. Dolan, Kristin A. Dolan's spouse, or jointly by James L. Dolan and Kristin A. Dolan. Ms. Dolan disclaims beneficial ownership of these securities beneficially owned or deemed to be beneficially owned by Mr. Dolan (other than securities held jointly with her spouse) and this report shall not be deemed to be an admission that she is, for purposes of Section 16 or for any other purpose, the beneficial owner of such securities. Represents RSUs of SPHR withheld to satisfy tax withholding obligations in connection with the vesting and settlement of RSUs described in footnote 1, exempt under Rule 16b-3. Each performance restricted stock unit ("PSU") was granted on September 1, 2023 under the 2020 Employee Stock Plan and represents a right to receive one share of Class A Common Stock or the cash equivalent thereof. The Compensation Committee of the Board of Directors of SPHR deemed such PSUs earned at 100% of target on March 27, 2024. The PSUs vested and were settled on September 15, 2026. Represents PSUs of SPHR withheld to satisfy tax withholding obligations in connection with the vesting and settlement of PSUs described in footnote 5, exempt under Rule 16b-3. Securities held directly by Kristin A. Dolan, James L. Dolan's spouse. Mr. Dolan disclaims beneficial ownership of these securities beneficially owned or deemed to be beneficially owned by Ms. Dolan (other than securities in which he has a direct pecuniary interest) and this report shall not be deemed to be an admission that Mr. Dolan is, for the purposes of Section 16 or for any other purpose, the beneficial owner of such securities. The reporting persons disclaim beneficial ownership of all securities of SPHR beneficially owned and deemed to be beneficially owned by their minor children and household members and this report shall not be deemed an admission that reporting persons are, for the purposes of Section 16 or for any other purpose, the beneficial owner of such securities. /s/ James L. Dolan 2026-09-17 /s/ Mark C. Cresitello, Attorney-in-Fact for Kristin A. Dolan 2026-09-17