SEC ownership of Sphere Entertainment Co.

Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001795250.

Comparable stake leader

BlackRock, Inc.

Disclosed value leader

BlackRock, Inc.

Comparable rows

50/50

Latest evidence

15 Sep 2026

Top shareholders Insider holders Latest transactions
Public ticker
SPHR on NYSE
Parsed ownership sources
13F, 13D/G, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
Largest SEC-reported holder
BlackRock, Inc.
Ranking: Comparable ownership first, then disclosed value
Ownership snapshot CIK-linked ownership evidence from parsed SEC filings. 3 signals
Comparable ownership rows
50 of 50
Meaning: Rows with safely comparable ownership %
Latest 13D/G holder
BlackRock, Inc.
Source: Latest parsed Schedule 13D/G stake
Latest parsed ownership date
15 Sep 2026
Freshness: Most recent filing date in this holder set
Issuer Names, identifiers, and filing context for this profile. 2 identity fields
Issuer CIK
0001795250
Issuer location
New York, NY

Ownership snapshot

Top shareholders of Sphere Entertainment Co. (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader
BlackRock, Inc.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
15 Sep 2026
13F 13D/G 3/4/5 Lead comparable stake: 14% 13D/G row: BlackRock, Inc. Showing 1-8 of 50 holder rows.

Quick read

BlackRock, Inc. leads the comparable SEC ownership view at 14%.

50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens BlackRock, Inc.'s linked filing trail.
Comparable ownership Top 5
BlackRock, Inc. 14%
James L. Dolan 13%
MORGAN STANLEY 8.3%
ARIEL INVESTMENTS, LLC 5.8%
BARCLAYS PLC 5.8%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-8 of 50 holder rows
Holder Evidence Ownership % Position 12M Net Δ As of
BlackRock, Inc.
13F 13D/G
Company
13F 13D/G
14%
from 13D/G
$705,969,926
4,080,043 shares
 — 30 Jun 2026
James L. Dolan
13D/G 3/4/5
Mary S. Dolan, as Trustee of certain trusts described herein · Executive Chairman and CEO, Director, Member of 13(d) Group, 10%+ Owner
13D/G 3/4/5
13%
$495,356,934
4,280,651 shares
 $0 25 Feb 2026
MORGAN STANLEY
13F 13D/G
Company
13F 13D/G
8.3%
from 13D/G
$428,209,665
2,474,769 shares
 — 30 Jun 2026
ARIEL INVESTMENTS, LLC
13F 13D/G
Company
13F 13D/G
5.8%
from 13D/G
$288,151,357
1,665,326 shares
 — 30 Jun 2026
BARCLAYS PLC
13D/G 13F
Company
13D/G 13F
5.8%
$44,364,832
1,676,042 shares
 $0 31 Mar 2025
DIMENSIONAL FUND ADVISORS LP
13F 13D/G
Company
13F 13D/G
5%
from 13D/G
$154,307,808
891,801 shares
 — 30 Jun 2026
CITADEL ADVISORS LLC
13D/G
Kenneth Griffin
13D/G
3.9%
$29,521,356
1,115,276 shares
 $0 31 Mar 2025
BANK OF NOVA SCOTIA
13D/G
13D/G
3.1%
$85,026,431
894,262 shares
 -$81,992,333 31 Dec 2025
How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Forms 3/4/5 flow

Insider trading overview

Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 01 Oct 2025.

Buys
$0
Insiders: 0
Sells
$0
Insiders: 0
Net
$0
Shares: 0
Window
Last 12 months
4 rolling buckets
Buy value Sell value
Shares: 0 Shares: 0
Window (months) Buy shares Sell shares Buy value Sell value Net value
0-3 0 0 $0 $0 $0
3-6 0 0 $0 $0 $0
6-9 0 0 $0 $0 $0
9-12 0 0 $0 $0 $0

Reporting owners

Insider holders from Forms 3/4/5

Showing 1-20 of 50 reporting-owner rows connected to Sphere Entertainment Co.. Open a relationship link for the CIK-to-CIK filing trail.

Rows
50
Largest Forms 3/4/5 holder
James L. Dolan
Net 12M change
$0
Latest report
15 Sep 2026
Name Relationship Holdings Value Past Year Net Change Change % Valuation Report Date
James L. Dolan Executive Chairman and CEO, Director, Member of 13(d) Group, 10%+ Owner $183,260,710 Mixed 15 Sep 2026
Kristin A. Dolan Director, 10%+ Owner $181,783,674 Mixed 15 Sep 2026
CHARLES F. DOLAN 2009 FAMILY TRUST FBO DEBORAH A. DOLAN-SWEENEY Member of 13(d) Group $21,900,913 Mixed 08 Sep 2025
David Granville-Smith Executive Vice President $17,108,715 Mixed 15 Sep 2026
CHARLES F. DOLAN CHILDREN TRUST FBO DEBORAH DOLAN-SWEENEY Member of 13(d) Group $15,251,150 Mixed 08 Sep 2025
Jennifer Koester President & COO, Sphere $11,030,159 Mixed 15 Sep 2026
Andrea Greenberg President/CEO-MSG Networks $4,102,188 Mixed 12 Mar 2025
Charles F. Dolan Director, Member of 13(d) Group, 10%+ Owner $3,701,214 Mixed 09 Dec 2024
Robert H. Langer EVP, CFO & Treasurer $1,721,904 Mixed 13 Mar 2026
Ryan T. Dolan Director $1,043,858 Mixed 15 Sep 2026
Brian G. Sweeney Director, Trustee of 13(d) Group Member $1,029,947 Mixed 10 Jun 2026
Thomas Charles Dolan Director, Member of 13(d) Group $1,029,947 Mixed 10 Jun 2026
Joseph Lhota Director $981,932 Mixed 10 Jun 2026
Franco Laura EVP & General Counsel $928,359 Mixed 15 Sep 2025
John L. Sykes Director $908,874 Mixed 10 Jun 2026
Paul J. Dolan Director, Trustee of 13(d) Group Member $902,244 Mixed 10 Jun 2026
Joel M. Litvin Director $831,340 Mixed 10 Jun 2026
Andrew Lustgarten President $633,522 Mixed 15 Sep 2021
Isiah L. Thomas III Director $623,188 Mixed 10 Jun 2026
Marianne Dolan Weber Director, Member of 13(d) Group $623,188 Mixed 10 Jun 2026

Recent insider transactions for Sphere Entertainment Co.

Showing up to 300 recent insider transactions from the last 12 months.

Insider Symbol Class Transaction % SEC-reported value SEC-reported price Shares Shares owned Date Ownership
Jennifer Koester SPHR Class A Common Stock Tax liability -35.5% -24,284 44,178 15 Sep 2026 Direct
Jennifer Koester SPHR Class A Common Stock Options Exercise 278.3% 47,573 64,665 15 Sep 2026 Direct
Jennifer Koester SPHR Performance Restricted Stock Units Options Exercise -100% -20,487 0 15 Sep 2026 Direct
Jennifer Koester SPHR Restricted Stock Units Options Exercise -100% -27,086 0 15 Sep 2026 Direct
David Granville-Smith SPHR Class A Common Stock Tax liability -36.4% -47,456 82,803 15 Sep 2026 Direct
David Granville-Smith SPHR Class A Common Stock Options Exercise 290.2% 85,818 115,385 15 Sep 2026 Direct
David Granville-Smith SPHR Performance Restricted Stock Units Options Exercise -100% -26,897 0 15 Sep 2026 Direct
David Granville-Smith SPHR Restricted Stock Units Options Exercise -100% -58,921 0 15 Sep 2026 Direct
James L. Dolan SPHR Class A Common Stock Tax liability -5.25% -54,921 991,635 15 Sep 2026 Direct
James L. Dolan SPHR Class A Common Stock Tax liability -5.25% -54,921 991,635 15 Sep 2026 Direct
James L. Dolan SPHR Class A Common Stock Options Exercise 11.2% 107,586 1,072,324 15 Sep 2026 Direct
James L. Dolan SPHR Class A Common Stock Options Exercise 11.2% 107,586 1,072,324 15 Sep 2026 Direct
James L. Dolan SPHR Performance Restricted Stock Units Options Exercise -100% -80,689 0 15 Sep 2026 Direct
James L. Dolan SPHR Performance Restricted Stock Units Options Exercise -100% -80,689 0 15 Sep 2026 Direct
James L. Dolan SPHR Restricted Stock Units Options Exercise -100% -26,897 0 15 Sep 2026 Direct
James L. Dolan SPHR Restricted Stock Units Options Exercise -100% -26,897 0 15 Sep 2026 Direct
Ryan T. Dolan SPHR Class A Common Stock Tax liability -16.2% -894 4,615 15 Sep 2026 Direct
Ryan T. Dolan SPHR Class A Common Stock Options Exercise 66.6% 2,497 6,247 15 Sep 2026 Direct
Ryan T. Dolan SPHR Performance Restricted Stock Units Options Exercise -100% -1,632 0 15 Sep 2026 Direct
Ryan T. Dolan SPHR Restricted Stock Units Options Exercise -100% -865 0 15 Sep 2026 Direct
Kristin A. Dolan SPHR Restricted Stock Units Award 7.42% 1,723 24,937 10 Jun 2026 Direct
Kristin A. Dolan SPHR Restricted Stock Units Award 7.42% 1,723 24,937 10 Jun 2026 Direct
Thomas C. Dolan SPHR Restricted Stock Units Award 4.07% 1,173 29,959 10 Jun 2026 Direct
John L. Sykes SPHR Restricted Stock Units Award 4.53% 1,173 27,092 10 Jun 2026 Direct
Brian G. Sweeney SPHR Restricted Stock Units Award 4.07% 1,173 29,959 10 Jun 2026 Direct
Brian G. Sweeney SPHR Restricted Stock Units Award 4.07% 1,173 29,959 10 Jun 2026 Direct
Paul J. Dolan SPHR Restricted Stock Units Award 4.55% 1,173 26,935 10 Jun 2026 Direct
Joseph Lhota SPHR Restricted Stock Units Award 4.24% 1,173 28,822 10 Jun 2026 Direct
Isiah L. Thomas III SPHR Restricted Stock Units Award 6.12% 1,173 20,327 10 Jun 2026 Direct
Debra G. Perelman SPHR Restricted Stock Units Award 41.7% 1,833 6,230 10 Jun 2026 Direct
Joel M. Litvin SPHR Restricted Stock Units Award 4.87% 1,173 25,256 10 Jun 2026 Direct
Vincent Tese SPHR Restricted Stock Units Award 6.12% 1,173 20,327 10 Jun 2026 Direct
Charles P. Dolan SPHR Restricted Stock Units Award 6.12% 1,173 20,327 10 Jun 2026 Direct
Marianne Dolan Weber SPHR Restricted Stock Units Award 6.12% 1,173 20,327 10 Jun 2026 Direct
Allen M. Lo SPHR Restricted Stock Units Award 15,734 15,734 30 Mar 2026 Direct
Robert H. Langer SPHR Class A Common Stock Tax liability -50.9% -5,416 5,232 13 Mar 2026 Direct
Robert H. Langer SPHR Class A Common Stock Options Exercise 10,648 10,648 13 Mar 2026 Direct
Robert H. Langer SPHR Restricted Stock Units Options Exercise -33.3% -10,648 21,298 13 Mar 2026 Direct
Ryan Thomas Dolan SPHR Class A Common Stock Tax liability -7.41% -325 4,059 13 Mar 2026 Direct
Ryan Thomas Dolan SPHR Class A Common Stock Options Exercise 26.1% 908 4,384 13 Mar 2026 Direct
Ryan Thomas Dolan SPHR Restricted Stock Units Options Exercise -65.5% -908 478 13 Mar 2026 Direct
Jennifer Koester SPHR Class A Common Stock Tax liability -22.2% -8,808 30,918 13 Mar 2026 Direct
Jennifer Koester SPHR Class A Common Stock Options Exercise 76.8% 17,254 39,726 13 Mar 2026 Direct
Jennifer Koester SPHR Restricted Stock Units Options Exercise -33.3% -17,254 34,509 13 Mar 2026 Direct
David Granville-Smith SPHR Class A Common Stock Tax liability -6.13% -3,688 56,464 13 Mar 2026 Direct
David Granville-Smith SPHR Class A Common Stock Options Exercise 12.5% 6,704 60,152 13 Mar 2026 Direct
David Granville-Smith SPHR Restricted Stock Units Options Exercise -33.3% -6,704 13,410 13 Mar 2026 Direct
Christopher J. Winters SPHR Restricted Stock Units Award 1,273 1,273 11 Mar 2026 Direct
Ryan Thomas Dolan SPHR Restricted Stock Units Award 2,391 2,391 11 Mar 2026 Direct
David Granville-Smith SPHR Restricted Stock Units Award 7,527 7,527 11 Mar 2026 Direct
* marks a reported price that did not pass the local price check.
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