SPHR

SEC source: 0001193125-25-206148 · ownership.xml · nonDerivative · entry 1

Franco Laura · CIK 0001769491 · EVP & General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,919

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit ("RSU") was granted on April 22, 2024 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. 32% of the RSUs vested and were settled on September 13, 2024. 40% of the RSUs vested and were settled on September 15, 2025. 24% of the RSUs are scheduled to vest and settle on September 15, 2026. 4% of the RSUs are scheduled to vest and settle on September 15, 2027.

SEC source: 0001193125-25-206149 · ownership.xml · derivative · entry 12

Dolan Ryan Thomas · CIK 0001794486 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 494 shares

Expires 2025-09-15

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F6 · derivative.exercise_price: Each performance restricted stock unit ("PSU") was granted on August 31, 2022 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, 2025.

F6 · derivative.exercise_date: Each performance restricted stock unit ("PSU") was granted on August 31, 2022 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, 2025.

SEC source: 0001193125-25-206149 · ownership.xml · derivative · entry 11

Dolan Ryan Thomas · CIK 0001794486 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 643

Underlying: Class A Common Stock · 321 shares

Expires 2027-09-15

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: Each RSU was granted on August 27, 2024 under 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 15, 2025. One-third of the RSUs are scheduled to vest and settle on September 15, 2026. The remaining one-third of the RSUs are scheduled to vest and settle on September 15, 2027.

F4 · derivative.exercise_date: Each RSU was granted on August 27, 2024 under 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 15, 2025. One-third of the RSUs are scheduled to vest and settle on September 15, 2026. The remaining one-third of the RSUs are scheduled to vest and settle on September 15, 2027.

SEC source: 0001193125-25-206149 · ownership.xml · derivative · entry 10

Dolan Ryan Thomas · CIK 0001794486 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 275

Underlying: Class A Common Stock · 275 shares

Expires 2026-09-15

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each RSU was granted on April 22, 2024 under 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 are scheduled to vest and settle on September 15, 2026.

F3 · derivative.exercise_date: Each RSU was granted on April 22, 2024 under 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 are scheduled to vest and settle on September 15, 2026.

SEC source: 0001193125-25-206149 · ownership.xml · derivative · entry 9

Dolan Ryan Thomas · CIK 0001794486 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 269

Underlying: Class A Common Stock · 269 shares

Expires 2026-09-15

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each RSU 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. 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 are scheduled to vest and settle on September 15, 2026.

F2 · derivative.exercise_date: Each RSU 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. 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 are scheduled to vest and settle on September 15, 2026.

SEC source: 0001193125-25-206149 · ownership.xml · derivative · entry 8

Dolan Ryan Thomas · CIK 0001794486 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 165 shares

Expires 2025-09-15

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") was granted on August 31, 2022 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 15, 2023. One-third of the RSUs vested and were settled on September 13, 2024. The remaining one-third of the RSUs vested and were settled on September 15, 2025.

F1 · derivative.exercise_date: Each restricted stock unit ("RSU") was granted on August 31, 2022 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 15, 2023. One-third of the RSUs vested and were settled on September 13, 2024. The remaining one-third of the RSUs vested and were settled on September 15, 2025.

SEC source: 0001193125-25-206149 · ownership.xml · nonDerivative · entry 7

Dolan Ryan Thomas · CIK 0001794486 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,476

F7 · kind: Represents PSUs of SPHR withheld to satisfy tax withholding obligations in connection with the vesting and settlement of PSUs described in footnote 6, exempt under Rule 16b-3.

SEC source: 0001193125-25-206149 · ownership.xml · nonDerivative · entry 6

Dolan Ryan Thomas · CIK 0001794486 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,652

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F6 · price: Each performance restricted stock unit ("PSU") was granted on August 31, 2022 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, 2025.

SEC source: 0001193125-25-206149 · ownership.xml · nonDerivative · entry 5

Dolan Ryan Thomas · CIK 0001794486 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,158

F5 · kind: Represents RSUs of SPHR withheld to satisfy tax withholding obligations in connection with the vesting and settlement of RSUs described in footnotes 1, 2, 3 and 4, exempt under Rule 16b-3.

SEC source: 0001193125-25-206149 · ownership.xml · nonDerivative · entry 4

Dolan Ryan Thomas · CIK 0001794486 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,525

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · price: Each RSU was granted on August 27, 2024 under 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 15, 2025. One-third of the RSUs are scheduled to vest and settle on September 15, 2026. The remaining one-third of the RSUs are scheduled to vest and settle on September 15, 2027.

SEC source: 0001193125-25-206149 · ownership.xml · nonDerivative · entry 3

Dolan Ryan Thomas · CIK 0001794486 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,204

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · price: Each RSU was granted on April 22, 2024 under 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 are scheduled to vest and settle on September 15, 2026.

SEC source: 0001193125-25-206149 · ownership.xml · nonDerivative · entry 2

Dolan Ryan Thomas · CIK 0001794486 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,929

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · price: Each RSU 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. 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 are scheduled to vest and settle on September 15, 2026.

SEC source: 0001193125-25-206149 · ownership.xml · nonDerivative · entry 1

Dolan Ryan Thomas · CIK 0001794486 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,660

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit ("RSU") was granted on August 31, 2022 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 15, 2023. One-third of the RSUs vested and were settled on September 13, 2024. The remaining one-third of the RSUs vested and were settled on September 15, 2025.

SEC source: 0001193125-25-206153 · ownership.xml · derivative · entry 7

Granville-Smith David · CIK 0001980544 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,427

Underlying: Class A Common Stock · 3,213 shares

Expires 2027-09-15

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each RSU was granted on August 27, 2024 under 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 15, 2025. One-third of the RSUs are scheduled to vest and settle on September 15, 2026. The remaining one-third of the RSUs are scheduled to vest and settle on September 15, 2027.

F3 · derivative.exercise_date: Each RSU was granted on August 27, 2024 under 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 15, 2025. One-third of the RSUs are scheduled to vest and settle on September 15, 2026. The remaining one-third of the RSUs are scheduled to vest and settle on September 15, 2027.

SEC source: 0001193125-25-206153 · ownership.xml · derivative · entry 6

Granville-Smith David · CIK 0001980544 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,966

Underlying: Class A Common Stock · 8,966 shares

Expires 2026-09-15

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each RSU 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. 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 are scheduled to vest and settle on September 15, 2026.

F2 · derivative.exercise_date: Each RSU 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. 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 are scheduled to vest and settle on September 15, 2026.

SEC source: 0001193125-25-206153 · ownership.xml · derivative · entry 5

Granville-Smith David · CIK 0001980544 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 46,742

Underlying: Class A Common Stock · 46,742 shares

Expires 2026-09-15

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") was granted on June 15, 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 are scheduled to vest and settle on September 15, 2026.

F1 · derivative.exercise_date: Each restricted stock unit ("RSU") was granted on June 15, 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 are scheduled to vest and settle on September 15, 2026.

SEC source: 0001193125-25-206153 · ownership.xml · nonDerivative · entry 4

Granville-Smith David · CIK 0001980544 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 53,448

F4 · kind: Represents RSUs of SPHR withheld to satisfy tax withholding obligations in connection with the vesting and settlement of RSUs described in footnotes 1, 2 and 3, exempt under Rule 16b-3.

SEC source: 0001193125-25-206153 · ownership.xml · nonDerivative · entry 3

Granville-Smith David · CIK 0001980544 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 84,533

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · price: Each RSU was granted on August 27, 2024 under 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 15, 2025. One-third of the RSUs are scheduled to vest and settle on September 15, 2026. The remaining one-third of the RSUs are scheduled to vest and settle on September 15, 2027.

SEC source: 0001193125-25-206153 · ownership.xml · nonDerivative · entry 2

Granville-Smith David · CIK 0001980544 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 81,320

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · price: Each RSU 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. 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 are scheduled to vest and settle on September 15, 2026.

SEC source: 0001193125-25-206153 · ownership.xml · nonDerivative · entry 1

Granville-Smith David · CIK 0001980544 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 72,354

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit ("RSU") was granted on June 15, 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 are scheduled to vest and settle on September 15, 2026.

SEC source: 0001193125-25-206147 · ownership.xml · derivative · entry 5

Brunner Gregory · CIK 0001978906 · SVP, Controller & PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,248

Underlying: Class A Common Stock · 624 shares

Expires 2027-09-15

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each RSU was granted on August 27, 2024 under 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 15, 2025. One-third of the RSUs are scheduled to vest and settle on September 15, 2026. The remaining one-third of the RSUs are scheduled to vest and settle on September 15, 2027.

F2 · derivative.exercise_date: Each RSU was granted on August 27, 2024 under 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 15, 2025. One-third of the RSUs are scheduled to vest and settle on September 15, 2026. The remaining one-third of the RSUs are scheduled to vest and settle on September 15, 2027.

SEC source: 0001193125-25-206147 · ownership.xml · derivative · entry 4

Brunner Gregory · CIK 0001978906 · SVP, Controller & PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,480

Underlying: Class A Common Stock · 1,479 shares

Expires 2026-09-15

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: 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 are scheduled to vest and settle on September 15, 2026.

F1 · derivative.exercise_date: 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 are scheduled to vest and settle on September 15, 2026.

SEC source: 0001193125-25-206147 · ownership.xml · nonDerivative · entry 3

Brunner Gregory · CIK 0001978906 · SVP, Controller & PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,292

F3 · kind: Represents RSUs of SPHR withheld to satisfy tax withholding obligations in connection with the vesting and settlement of RSUs described in footnotes1 and 2, exempt under Rule 16b-3.

SEC source: 0001193125-25-206147 · ownership.xml · nonDerivative · entry 2

Brunner Gregory · CIK 0001978906 · SVP, Controller & PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,049

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · price: Each RSU was granted on August 27, 2024 under 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 15, 2025. One-third of the RSUs are scheduled to vest and settle on September 15, 2026. The remaining one-third of the RSUs are scheduled to vest and settle on September 15, 2027.

SEC source: 0001193125-25-206147 · ownership.xml · nonDerivative · entry 1

Brunner Gregory · CIK 0001978906 · SVP, Controller & PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,425

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: 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 are scheduled to vest and settle on September 15, 2026.

SEC source: 0001415889-25-024223 · form4-09112025_010912.xml · derivative · entry 1

DOLAN JAMES LAWRENCE · CIK 0000933028 · Director · Executive Chairman / CEO · 10% owner · Member of 13(d) Group

Dolan Kristin A · CIK 0001480991 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 281,583

Underlying: Class A Common Stock · 56,947 shares

Expires not disclosed

F1 · derivative.exercise_price: 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 · kind: On September 8, 2025, James L. Dolan 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.

F2 · price: On September 8, 2025, James L. Dolan 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.

F1 · derivative.exercise_date: 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").

F1 · derivative.expiration_date: 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").

F3 · ownership.direct: Securities held directly by James L. Dolan, Kristin A. Dolan's spouse. Ms. Dolan disclaims beneficial ownership of these securities, and this filing shall not be deemed an admission that Ms. Dolan is, for the purposes of Section 16 or for any other purpose, the beneficial owner of such securities.

SEC source: 0001415889-25-024211 · form4-09112025_010924.xml · derivative · entry 1

DOLAN KATHLEEN MARGARET · CIK 0000933026 · 10% owner · Member of 13(d) Group

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trusts

Disclosed balance after: 2,810,212

Underlying: Class A Common Stock · 46,697 shares

Expires not disclosed

F1 · derivative.exercise_price: 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 · kind: On September 8, 2025, a trust for which the Reporting Person is a trustee 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.

F2 · price: On September 8, 2025, a trust for which the Reporting Person is a trustee 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.

F1 · derivative.exercise_date: 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").

F1 · derivative.expiration_date: 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").

F3 · ownership.direct: Reflects securities held by trusts for which the Reporting Person serves as co-trustee. The Reporting Person disclaims beneficial ownership of all securities of Sphere Entertainment Co. beneficially owned or deemed to be beneficially owned by the trusts and this filing 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.

SEC source: 0001415889-25-024224 · form4-09112025_010942.xml · derivative · entry 1

CHARLES F. DOLAN CHILDREN TRUST FBO DEBORAH DOLAN-SWEENEY · CIK 0001505845 · Member of 13(d) Group

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 511,089

Underlying: Class A Common Stock · 46,697 shares

Expires not disclosed

F1 · derivative.exercise_price: 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 · kind: 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.

F2 · price: 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.

F1 · derivative.exercise_date: 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").

F1 · derivative.expiration_date: 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").

SEC source: 0001415889-25-024226 · form4-09112025_010926.xml · derivative · entry 1

CHARLES F. DOLAN 2009 FAMILY TRUST FBO DEBORAH A. DOLAN-SWEENEY · CIK 0001505854 · Member of 13(d) Group

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 571,780

Underlying: Class A Common Stock · 10,250 shares

Expires not disclosed

F1 · derivative.exercise_price: 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 · kind: 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.

F2 · price: 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.

F1 · derivative.exercise_date: 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").

F1 · derivative.expiration_date: 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").

SEC source: 0001415889-25-024225 · form4-09112025_010905.xml · derivative · entry 1

CHARLES F. DOLAN 2009 FAMILY TRUST FBO THOMAS C. DOLAN · CIK 0001505856 · Member of 13(d) Group

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 709,438

Underlying: Class A Common Stock · 56,948 shares

Expires not disclosed

F1 · derivative.exercise_price: 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 · kind: 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.

F2 · price: 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.

F1 · derivative.exercise_date: 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").

F1 · derivative.expiration_date: 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").

SEC source: 0001415889-25-024221 · form4-09112025_010923.xml · derivative · entry 1

CHARLES F. DOLAN 2009 FAMILY TRUST FBO PATRICK F. DOLAN · CIK 0001505855 · Member of 13(d) Group

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 56,947

Underlying: Class A Common Stock · 56,947 shares

Expires not disclosed

F1 · derivative.exercise_price: 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 · kind: 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.

F2 · price: 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.

F1 · derivative.exercise_date: 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").

F1 · derivative.expiration_date: 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").

SEC source: 0001415889-25-024222 · form4-09112025_010945.xml · derivative · entry 1

Marianne E. Dolan Weber 2012 Descendants Trust · CIK 0001564760 · Member of 13(d) Group

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 56,948

Underlying: Class A Common Stock · 56,948 shares

Expires not disclosed

F1 · derivative.exercise_price: 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 · kind: 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.

F2 · price: 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.

F1 · derivative.exercise_date: 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").

F1 · derivative.expiration_date: 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").

SEC source: 0001415889-25-024227 · form4-09112025_010947.xml · derivative · entry 1

Kathleen M. Dolan 2012 Descendants Trust · CIK 0001564761 · Member of 13(d) Group

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 56,947

Underlying: Class A Common Stock · 56,947 shares

Expires not disclosed

F1 · derivative.exercise_price: 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 · kind: 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.

F2 · price: 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.

F1 · derivative.exercise_date: 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").

F1 · derivative.expiration_date: 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").

SEC source: 0001415889-25-024230 · form4-09112025_010950.xml · derivative · entry 7

Charles F. Dolan 2009 Revocable Trust · CIK 0001723920 · Member of 13(d) Group

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 10,250 shares

Expires not disclosed

F1 · derivative.exercise_price: 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 · kind: On September 8, 2025, the Reporting Person transferred the shares of Class B Common Stock in partial repayment of promissory notes. 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.

F2 · price: On September 8, 2025, the Reporting Person transferred the shares of Class B Common Stock in partial repayment of promissory notes. 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.

F1 · derivative.exercise_date: 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").

F1 · derivative.expiration_date: 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").

SEC source: 0001415889-25-024230 · form4-09112025_010950.xml · derivative · entry 6

Charles F. Dolan 2009 Revocable Trust · CIK 0001723920 · Member of 13(d) Group

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,250

Underlying: Class A Common Stock · 46,697 shares

Expires not disclosed

F1 · derivative.exercise_price: 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 · kind: On September 8, 2025, the Reporting Person transferred the shares of Class B Common Stock in partial repayment of promissory notes. 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.

F2 · price: On September 8, 2025, the Reporting Person transferred the shares of Class B Common Stock in partial repayment of promissory notes. 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.

F1 · derivative.exercise_date: 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").

F1 · derivative.expiration_date: 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").

SEC source: 0001415889-25-024230 · form4-09112025_010950.xml · derivative · entry 5

Charles F. Dolan 2009 Revocable Trust · CIK 0001723920 · Member of 13(d) Group

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 56,947

Underlying: Class A Common Stock · 56,947 shares

Expires not disclosed

F1 · derivative.exercise_price: 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 · kind: On September 8, 2025, the Reporting Person transferred the shares of Class B Common Stock in partial repayment of promissory notes. 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.

F2 · price: On September 8, 2025, the Reporting Person transferred the shares of Class B Common Stock in partial repayment of promissory notes. 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.

F1 · derivative.exercise_date: 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").

F1 · derivative.expiration_date: 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").

SEC source: 0001415889-25-024230 · form4-09112025_010950.xml · derivative · entry 4

Charles F. Dolan 2009 Revocable Trust · CIK 0001723920 · Member of 13(d) Group

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 113,894

Underlying: Class A Common Stock · 56,948 shares

Expires not disclosed

F1 · derivative.exercise_price: 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 · kind: On September 8, 2025, the Reporting Person transferred the shares of Class B Common Stock in partial repayment of promissory notes. 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.

F2 · price: On September 8, 2025, the Reporting Person transferred the shares of Class B Common Stock in partial repayment of promissory notes. 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.

F1 · derivative.exercise_date: 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").

F1 · derivative.expiration_date: 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").

SEC source: 0001415889-25-024230 · form4-09112025_010950.xml · derivative · entry 3

Charles F. Dolan 2009 Revocable Trust · CIK 0001723920 · Member of 13(d) Group

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 170,842

Underlying: Class A Common Stock · 56,947 shares

Expires not disclosed

F1 · derivative.exercise_price: 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 · kind: On September 8, 2025, the Reporting Person transferred the shares of Class B Common Stock in partial repayment of promissory notes. 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.

F2 · price: On September 8, 2025, the Reporting Person transferred the shares of Class B Common Stock in partial repayment of promissory notes. 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.

F1 · derivative.exercise_date: 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").

F1 · derivative.expiration_date: 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").

SEC source: 0001415889-25-024230 · form4-09112025_010950.xml · derivative · entry 2

Charles F. Dolan 2009 Revocable Trust · CIK 0001723920 · Member of 13(d) Group

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 227,789

Underlying: Class A Common Stock · 56,948 shares

Expires not disclosed

F1 · derivative.exercise_price: 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 · kind: On September 8, 2025, the Reporting Person transferred the shares of Class B Common Stock in partial repayment of promissory notes. 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.

F2 · price: On September 8, 2025, the Reporting Person transferred the shares of Class B Common Stock in partial repayment of promissory notes. 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.

F1 · derivative.exercise_date: 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").

F1 · derivative.expiration_date: 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").

SEC source: 0001415889-25-024230 · form4-09112025_010950.xml · derivative · entry 1

Charles F. Dolan 2009 Revocable Trust · CIK 0001723920 · Member of 13(d) Group

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 284,737

Underlying: Class A Common Stock · 56,947 shares

Expires not disclosed

F1 · derivative.exercise_price: 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 · kind: On September 8, 2025, the Reporting Person transferred the shares of Class B Common Stock in partial repayment of promissory notes. 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.

F2 · price: On September 8, 2025, the Reporting Person transferred the shares of Class B Common Stock in partial repayment of promissory notes. 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.

F1 · derivative.exercise_date: 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").

F1 · derivative.expiration_date: 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").

SEC source: 0000950170-25-083067 · ownership.xml · derivative · entry 1

DOLAN THOMAS CHARLES · CIK 0000933029 · Director · Member of 13(d) Group

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,786

Underlying: Class A Common Stock · 4,397 shares

Expires not disclosed

F1 · derivative.exercise_price: 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.

F2 · derivative.exercise_date: 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.

F2 · derivative.expiration_date: 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.

SEC source: 0000950170-25-083352 · ownership.xml · derivative · entry 1

Dolan Kristin A · CIK 0001480991 · Director · 10% owner

DOLAN JAMES LAWRENCE · CIK 0000933028 · Director · Executive Chairman and CEO · 10% owner · Member of 13(d) Group

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,214

Underlying: Class A Common Stock · 4,397 shares

Expires not disclosed

F1 · derivative.exercise_price: 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.

F2 · derivative.exercise_date: 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.

F2 · derivative.expiration_date: 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.

F3 · ownership.direct: Securities are held 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 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.

SEC source: 0000950170-25-083066 · ownership.xml · derivative · entry 1

Sweeney Brian · CIK 0001320298 · Director · Trustee of 13(d) Group Member

DOLAN-SWEENEY DEBORAH A · CIK 0000933025 · Member of 13(d) Group

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,786

Underlying: Class A Common Stock · 4,397 shares

Expires not disclosed

F1 · derivative.exercise_price: 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.

F2 · derivative.exercise_date: 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.

F2 · derivative.expiration_date: 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.

F3 · ownership.direct: 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.

SEC source: 0000950170-25-083063 · ownership.xml · derivative · entry 1

WEBER MARIANNE DOLAN · CIK 0001098901 · Director · Member of 13(d) Group

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,154

Underlying: Class A Common Stock · 4,397 shares

Expires not disclosed

F1 · derivative.exercise_price: 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.

F2 · derivative.exercise_date: 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.

F2 · derivative.expiration_date: 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.

SEC source: 0000950170-25-083069 · ownership.xml · derivative · entry 1

DOLAN PAUL JOSEPH · CIK 0001025983 · Director · Trustee of 13(d) Group Member

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,762

Underlying: Class A Common Stock · 4,397 shares

Expires not disclosed

F1 · derivative.exercise_price: 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.

F2 · derivative.exercise_date: 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.

F2 · derivative.expiration_date: 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.

SEC source: 0000950170-25-083060 · ownership.xml · derivative · entry 1

TESE VINCENT · CIK 0001042445 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,154

Underlying: Class A Common Stock · 4,397 shares

Expires not disclosed

F1 · derivative.exercise_price: 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.

F2 · derivative.exercise_date: 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.

F2 · derivative.expiration_date: 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.

SEC source: 0000950170-25-083062 · ownership.xml · derivative · entry 1

Thomas Isiah III · CIK 0001807331 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,154

Underlying: Class A Common Stock · 4,397 shares

Expires not disclosed

F1 · derivative.exercise_price: 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.

F2 · derivative.exercise_date: 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.

F2 · derivative.expiration_date: 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.

SEC source: 0000950170-25-083064 · ownership.xml · derivative · entry 1

DOLAN CHARLES P · CIK 0001496956 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,154

Underlying: Class A Common Stock · 4,397 shares

Expires not disclosed

F1 · derivative.exercise_price: 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.

F2 · derivative.exercise_date: 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.

F2 · derivative.expiration_date: 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.

SEC source: 0000950170-25-083061 · ownership.xml · derivative · entry 1

LHOTA JOSEPH · CIK 0001250693 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,649

Underlying: Class A Common Stock · 4,397 shares

Expires not disclosed

F1 · derivative.exercise_price: 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.

F2 · derivative.exercise_date: 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.

F2 · derivative.expiration_date: 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.

SEC source: 0000950170-25-083058 · ownership.xml · derivative · entry 1

Perelman Debra Golding · CIK 0001606429 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,397

Underlying: Class A Common Stock · 4,397 shares

Expires not disclosed

F1 · derivative.exercise_price: 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.

F2 · derivative.exercise_date: 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.

F2 · derivative.expiration_date: 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.