Gregory Brunner - 15 Sep 2025 Form 4 Insider Report for Sphere Entertainment Co. (SPHR)

Reporting relationship: SVP, Controller & PAO
Issuer ticker: SPHR
Reported as of: 15 Sep 2025
Net transaction value: -$45,640
SEC form: 4
Accepted by SEC: 17 Sep 2025, 16:05:05 UTC
Prior SEC filing: 14 Mar 2025
Source filing: View source filing
Reporting owner signature: /s/ Mark C. Cresitello, Attorney-in-Fact for Gregory Brunner

Key filing fact

Gregory Brunner filed Form 4 for Sphere Entertainment Co. (SPHR) on 17 Sep 2025.

Key facts

This page summarizes Gregory Brunner's Form 4 filing for Sphere Entertainment Co. (SPHR).
5 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 17 Sep 2025, 16:05.

Change

Previous filing in this sequence was filed on 14 Mar 2025.
Current net transaction value: -$45,640.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001978906 Primary reporting owner

Brunner Gregory

Relationship: SVP, Controller & PAO
Address: TWO PENNSYLVANIA PLAZA, NEW YORK
Signature: /s/ Mark C. Cresitello, Attorney-in-Fact for Gregory Brunner
Signature date: 17 Sep 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

SPHR transaction

Class A Common Stock

Options Exercise

Transaction value: $0
Shares: +1,479
Change %: +156%
Price: $0.000000
Shares after: 2,425
Date: 15 Sep 2025
Ownership: Direct
Footnotes: F1

SPHR transaction

Class A Common Stock

Options Exercise

Transaction value: $0
Shares: +624
Change %: +26%
Price: $0.000000
Shares after: 3,049
Date: 15 Sep 2025
Ownership: Direct
Footnotes: F2

SPHR transaction

Class A Common Stock

Tax liability

Transaction value: $45,640
Shares: -757
Change %: -25%
Price: $60.29
Shares after: 2,292
Date: 15 Sep 2025
Ownership: Direct
Footnotes: F3

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

SPHR transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value: $0
Shares: -1,479
Change %: -50%
Price: $0.000000
Shares after: 1,480
Date: 15 Sep 2025
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 1,479
Exercise price
Footnotes: F1

SPHR transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value: $0
Shares: -624
Change %: -33%
Price: $0.000000
Shares after: 1,248
Date: 15 Sep 2025
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 624
Exercise price
Footnotes: F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

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.

Footnote 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.

Footnote F3

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.