Comparable stake leader
BlackRock, Inc.
SEC ownership of Sphere Entertainment Co.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001795250.
Disclosed value leader
James L. Dolan
Comparable rows
50/50
Latest evidence
31 Mar 2026
- 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
- 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
-
31 Mar 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001795250
- Issuer location
- New York, NY
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
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
James L. Dolan
Comparable rows
50/50
Latest evidence
31 Mar 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%
ARIEL INVESTMENTS, LLC
8.6%
MORGAN STANLEY
7%
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
|
14%
from 13D/G
|
$458,792,273
3,907,941 shares
|
— | 31 Mar 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
|
13%
|
$495,356,934
4,280,651 shares
|
$0 | 25 Feb 2026 |
| ARIEL INVESTMENTS, LLC |
13D/G
13F
Company
|
8.6%
|
$313,254,951
2,462,309 shares
|
-$89,845,944 | 31 Mar 2026 |
| MORGAN STANLEY |
13D/G
13F
Company
|
7%
|
$255,870,716
2,011,246 shares
|
+$33,498,553 | 31 Mar 2026 |
| BARCLAYS PLC |
13D/G
13F
Company
|
5.8%
|
$44,364,832
1,676,042 shares
|
$0 | 31 Mar 2025 |
| DIMENSIONAL FUND ADVISORS LP |
13F
13D/G
Company
|
5%
from 13D/G
|
$105,351,397
897,586 shares
|
— | 31 Mar 2026 |
| CITADEL ADVISORS LLC |
13F
13D/G
Company · Kenneth Griffin
|
3.9%
from 13D/G
|
$45,445,540
387,100 shares
|
— | 31 Mar 2026 |
| BANK OF NOVA SCOTIA |
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 Aug 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
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 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 | |||
| Robert H. Langer | SPHR | Restricted Stock Units | Award | 7,527 | 7,527 | 11 Mar 2026 | Direct | |||
| Jennifer Koester | SPHR | Restricted Stock Units | Award | 19,371 | 19,371 | 11 Mar 2026 | Direct | |||
| James L. Dolan | SPHR | Class A Common Stock | Tax liability | -8.03% | -85,431 | 978,468 | 17 Feb 2026 | Direct | ||
| James L. Dolan | SPHR | Class A Common Stock | Disposed to Issuer | -2.13% | -23,199 | 1,063,899 | 17 Feb 2026 | Direct | ||
| James L. Dolan | SPHR | Class A Common Stock | Options Exercise | 11.1% | 108,630 | 1,087,098 | 17 Feb 2026 | Direct | ||
| James L. Dolan | SPHR | Stock Options (Rights to Buy) | Options Exercise | -100% | -108,630 | 0 | 17 Feb 2026 | Direct | ||
| Ryan Thomas Dolan | SPHR | Restricted Stock Units | Award | 35.6% | 716 | 2,728 | 17 Oct 2025 | Direct | ||
| James L. Dolan | SPHR | Class A Common Stock | Tax liability | -7.85% | -79,027 | 928,211 | 15 Sep 2025 | Direct | ||
| James L. Dolan | SPHR | Class A Common Stock | Options Exercise | 18.3% | 158,563 | 1,026,961 | 15 Sep 2025 | Direct | ||
| James L. Dolan | SPHR | Performance Restricted Stock Units | Options Exercise | -100% | -98,750 | 0 | 15 Sep 2025 | Direct | ||
| James L. Dolan | SPHR | Restricted Stock Units | Options Exercise | -100% | -59,813 | 0 | 15 Sep 2025 | Direct | ||
| David Granville-Smith | SPHR | Class A Common Stock | Tax liability | -36.8% | -31,085 | 53,448 | 15 Sep 2025 | Direct | ||
| David Granville-Smith | SPHR | Class A Common Stock | Options Exercise | 230% | 58,921 | 84,533 | 15 Sep 2025 | Direct | ||
| David Granville-Smith | SPHR | Restricted Stock Units | Options Exercise | -90.2% | -58,921 | 6,427 | 15 Sep 2025 | Direct | ||
| Ryan Thomas Dolan | SPHR | Class A Common Stock | Tax liability | -14.7% | -543 | 3,158 | 15 Sep 2025 | Direct | ||
| Ryan Thomas Dolan | SPHR | Class A Common Stock | Options Exercise | 71.6% | 1,524 | 3,652 | 15 Sep 2025 | Direct | ||
| Ryan Thomas Dolan | SPHR | Performance Restricted Stock Units | Options Exercise | -100% | -494 | 0 | 15 Sep 2025 | Direct | ||
| Ryan Thomas Dolan | SPHR | Restricted Stock Units | Options Exercise | -100% | -1,030 | 0 | 15 Sep 2025 | Direct | ||
| Laura Franco | SPHR | Class A Common Stock | Tax liability | -28.2% | -4,318 | 11,017 | 15 Sep 2025 | Direct | ||
| Laura Franco | SPHR | Class A Common Stock | Options Exercise | 232.1% | 10,718 | 15,335 | 15 Sep 2025 | Direct |
* marks a reported price that did not pass the local price check.