David Granville-Smith - 15 Sep 2026 Form 4 Insider Report for Sphere Entertainment Co. (SPHR)

Source evidence Original filing metadata and source links for verification. 4 source fields
SEC form
4
Accepted by SEC
17 Sep 2026, 16:05:09 UTC
Prior SEC filing
28 Aug 2026
Source filing
View source filing
Reporting owner 1 detail
Reporting owner signature
/s/ Mark C. Cresitello, Attorney-in-Fact for David Granville-Smith

Key filing fact

David Granville-Smith filed Form 4 for Sphere Entertainment Co. (SPHR) on 17 Sep 2026.

Key facts

  • This page summarizes David Granville-Smith's Form 4 filing for Sphere Entertainment Co. (SPHR).
  • 10 reported transactions and 4 derivative rows are listed below.
  • Accepted by SEC: 17 Sep 2026, 16:05.

Change

  • Previous filing in this sequence was filed on 28 Aug 2026.
  • Current net transaction value: $0.

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 0001980544 Primary reporting owner

Granville-Smith David

Relationship
Executive Vice President
Address
TWO PENNSYLVANIA PLAZA, NEW YORK
Signature
/s/ Mark C. Cresitello, Attorney-in-Fact for David Granville-Smith
Signature date
17 Sep 2026

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
Shares
+46,742
Change %
+83%
Price
$0.000000*
Shares after
103,206
Date
15 Sep 2026
Ownership
Direct
Footnotes
F1
SPHR transaction

Class A Common Stock

Options Exercise

Transaction value
Shares
+8,966
Change %
+8.7%
Price
$0.000000*
Shares after
112,172
Date
15 Sep 2026
Ownership
Direct
Footnotes
F2
SPHR transaction

Class A Common Stock

Options Exercise

Transaction value
Shares
+3,213
Change %
+2.9%
Price
$0.000000*
Shares after
115,385
Date
15 Sep 2026
Ownership
Direct
Footnotes
F3
SPHR transaction

Class A Common Stock

Tax liability

Transaction value
Shares
-32,582
Change %
-28%
Price
$144.12*
Shares after
82,803
Date
15 Sep 2026
Ownership
Direct
Footnotes
F4
SPHR transaction

Class A Common Stock

Options Exercise

Transaction value
Shares
+26,897
Change %
+32%
Price
$0.000000*
Shares after
109,700
Date
15 Sep 2026
Ownership
Direct
Footnotes
F5
SPHR transaction

Class A Common Stock

Tax liability

Transaction value
Shares
-14,874
Change %
-14%
Price
$144.12*
Shares after
94,826
Date
15 Sep 2026
Ownership
Direct
Footnotes
F6

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
Shares
-46,742
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 Sep 2026
Ownership
Direct
Underlying class
Class A Common Stock
Underlying amount
46,742
Exercise price
Footnotes
F1
SPHR transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares
-8,966
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 Sep 2026
Ownership
Direct
Underlying class
Class A Common Stock
Underlying amount
8,966
Exercise price
Footnotes
F2
SPHR transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares
-3,213
Change %
-50%
Price
$0.000000*
Shares after
3,214
Date
15 Sep 2026
Ownership
Direct
Underlying class
Class A Common Stock
Underlying amount
3,213
Exercise price
Footnotes
F3
SPHR transaction Derivative

Performance Restricted Stock Units

Options Exercise

Transaction value
Shares
-26,897
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 Sep 2026
Ownership
Direct
Underlying class
Class A Common Stock
Underlying amount
26,897
Exercise price
Footnotes
F5
* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 6 footnotes

Footnote F1

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 vested and were settled on September 15, 2026.

Footnote F2

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 vested and were settled on September 15, 2026.

Footnote F3

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 vested and were settled on September 15, 2026. The remaining one-third of the RSUs are scheduled to vest and settle on September 15, 2027.

Footnote F4

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.

Footnote F5

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.

Footnote F6

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.

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