X0609 4 2026-06-10 0001795250 Sphere Entertainment Co. SPHR 0001320298 Sweeney Brian false TWO PENNSYLVANIA PLAZA NEW YORK NY 10121 true false false true Trustee of 13(d) Group Member 0000933025 DOLAN-SWEENEY DEBORAH A false TWO PENNSYLVANIA PLAZA NEW YORK NY 10121 false false false true Member of 13(d) Group false Restricted Stock Units 2026-06-10 4 A false 1173 0 A Class A Common Stock 1173 29959 D Each restricted stock unit ("RSU") is granted under the Sphere Entertainment Co. 2020 Stock Plan for Non-Employee Directors, as amended, and represents a right to receive one share of Class A Common Stock or the cash equivalent thereof. The RSUs are fully vested on the date of the grant and will be settled in stock or in cash on the first business day 90 days after a separation from service. Securities are held by Brian G. Sweeney, Deborah A. Dolan-Sweeney's spouse. Ms. Dolan-Sweeney disclaims beneficial ownership of these securities beneficially owned or deemed to be beneficially owned by Mr. Sweeney and this report shall not be deemed to be an admission that Ms. Dolan-Sweeney is, for the purposes of Section 16 or for any other purpose, the beneficial owner of such securities. /s/ Brian G. Sweeney 2026-06-12 /s/ Brian G. Sweeney, Attorney-in-Fact for Deborah A. Dolan-Sweeney 2026-06-12