Koester Jennifer 4

4 · Sphere Entertainment Co. · Filed Sep 17, 2025

Form 4

Period: 2025-09-15

President & COO, Sphere

Transactions

Exercise/Conversion
Class A Common Stock
2025-09-15+6,829→ 28,029 total
Tax Payment
Class A Common Stock
2025-09-15$60.29/sh−13,826$833,570→ 22,472 total
Exercise/Conversion
Class A Common Stock
2025-09-15+11,988→ 21,200 total
Exercise/Conversion
Class A Common Stock
2025-09-15+8,269→ 36,298 total
Exercise/Conversion
Restricted Stock Units
2025-09-15−11,988→ 11,988 total
Exp: 2026-09-15→ Class A Common Stock (11,988 underlying)
Exercise/Conversion
Restricted Stock Units
2025-09-15−6,829→ 6,829 total
Exp: 2026-09-15→ Class A Common Stock (6,829 underlying)
Exercise/Conversion
Restricted Stock Units
2025-09-15−8,269→ 16,539 total
Exp: 2027-09-15→ Class A Common Stock (8,269 underlying)

Footnotes (3)

[F1]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. 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]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]Represents RSUs of SPHR withheld to satisfy tax withholding obligations in connection with the vesting and settlement of RSUs described in footnotes 1 and 2, exempt under Rule 16b-3.

Documents

1 file