BlackRock discloses 3.85M-share stake in Sphere Entertainment (SPHR)

Rhea-AI Filing Summary

BlackRock, Inc. reports beneficial ownership of 13.5% — 3,853,804 shares — of Sphere Entertainment Co. Class A Stock as of 03/31/2026. The filing states BlackRock holds sole voting power for 3,811,332 shares and sole dispositive power for 3,853,804 shares. The schedule notes that iShares Core S&P Small-Cap ETF holds more than 5% of the company’s common stock. The filing is signed by a BlackRock managing director on 04/07/2026.

Insights

Institutional Ownership Analyst

Large passive holder reports a 13.5% stake in Sphere Entertainment.

BlackRock discloses beneficial ownership of 13.5% of Class A shares, totaling 3,853,804 shares as of 03/31/2026. The filing identifies clear voting and dispositive authority with sole voting power for 3,811,332 shares, indicating direct control over voting instructions for most held shares.

Institutional ownership at this scale can affect shareholder voting outcomes; subsequent filings or proxy materials would show whether these holdings align with active engagement or passive indexing strategies. Future company filings may disclose related governance votes or disclosures tied to institutional holders.

Corporate Governance Expert

Document confirms voting and disposition rights held by a single investment manager.

The Schedule 13G lists BlackRock with sole dispositive power for 3,853,804 shares and no shared voting/dispositive power, which simplifies attribution of voting authority for those shares. The filing also flags that iShares Core S&P Small-Cap ETF holds more than 5% of common stock, a relevant fact for aggregate ownership analysis.

Stakeholders assessing potential governance influence should watch proxy disclosures and any Form 4s or 13D amendments for changes in intent or voting coordination; timing in this excerpt is 03/31/2026 (ownership) and signature 04/07/2026.

Key Figures

Beneficial ownership: 3,853,804 shares Percent of class: 13.5% Sole voting power: 3,811,332 shares +3 more

6 metrics

Beneficial ownership 3,853,804 shares Class A Stock as of 03/31/2026

Percent of class 13.5% Percent of Class A Stock as of 03/31/2026

Sole voting power 3,811,332 shares Sole power to vote or direct the vote

Sole dispositive power 3,853,804 shares Sole power to dispose or direct disposition

Signatory date 04/07/2026 Signature date on Schedule 13G

Other holder >5% iShares Core S&P Small-Cap ETF Listed as holding more than 5% of common stock

Key Terms

Schedule 13G, beneficial ownership, sole dispositive power, iShares Core S&P Small-Cap ETF, +1 more

5 terms

Schedule 13G regulatory

"Item 1. (a) Name of issuer: Sphere Entertainment Co."

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

beneficial ownership financial

"Item 4. (a) Amount beneficially owned: 3853804"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

sole dispositive power financial

"Item 4. (c)(iii) Sole power to dispose or to direct the disposition of: 3853804"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

iShares Core S&P Small-Cap ETF market

"Item 6. The interest of 1 such person, iShares Core S&P Small-Cap ETF"

Exhibit 99 regulatory

"Exhibit 99: Item 7"

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Accepted by SEC EDGAR 04/07/2026 - 12:39 PM Learn about SEC filing dates

FAQ

How many Sphere Entertainment (SPHR) Class A shares does BlackRock report owning?

BlackRock reports beneficial ownership of 3,853,804 Class A shares. This equals 13.5% of the Class A stock as stated for the 03/31/2026 reporting date, with signature dated 04/07/2026.

What voting power does BlackRock hold in SPHR according to the filing?

BlackRock reports sole voting power for 3,811,332 shares of Class A stock. The filing shows no shared voting power, per the ownership section dated 03/31/2026.

Does the filing name other holders above 5% of Sphere Entertainment (SPHR)?

Yes; the filing identifies iShares Core S&P Small-Cap ETF as having an interest exceeding 5% of total outstanding common stock, per Item 6 in the disclosure.

Who signed the Schedule 13G for BlackRock and when?

The Schedule 13G is signed by Spencer Fleming, Managing Director, with the signature dated 04/07/2026, attesting to the reported ownership figures.

Does the filing show shared dispositive or voting power for BlackRock in SPHR?

No; the filing states shared voting power: 0 and shared dispositive power: 0, indicating BlackRock reports only sole powers for the shares listed.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Sphere Entertainment Co.

(Name of Issuer)

Class A Stock

(Title of Class of Securities)

55826T102

(CUSIP Number)

03/31/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 55826T102

1

Names of Reporting Persons

BlackRock, Inc.

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 3,811,332.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 3,853,804.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

3,853,804.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

13.5 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Sphere Entertainment Co.
(b)	Address of issuer's principal executive offices: TWO PENNSYLVANIA PLAZA NEW YORK NY 10121
Item 2.
(a)	Name of person filing: BlackRock, Inc. In accordance with SEC Release No. 34-39538 (January 12, 1998), this Schedule 13G reflects the securities beneficially owned, or deemed to be beneficially owned, by certain business units (collectively, the "Reporting Business Units") of BlackRock, Inc. and its subsidiaries and affiliates. It does not include securities, if any, beneficially owned by other business units whose beneficial ownership of securities are disaggregated from that of the Reporting Business Units in accordance with such release.
(b)	Address or principal business office or, if none, residence: BlackRock, Inc., 50 Hudson Yards New York, NY 10001
(c)	Citizenship: See Item 4 of Cover Page
(d)	Title of class of securities: Class A Stock
(e)	CUSIP Number(s): 55826T102
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 3853804
(b)	Percent of class: 13.5 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 3811332
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 3853804
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. The interest of 1 such person, iShares Core S&P Small-Cap ETF, in the common stock of Sphere Entertainment Co. is more than five percent of the total outstanding common stock.
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary. See Exhibit 99
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

BlackRock, Inc.

Signature:	Spencer Fleming
Name/Title:	Managing Director
Date:	04/07/2026

Exhibit Information

Exhibit 24: Power of Attorney Exhibit 99: Item 7