STOCK TITAN

Sphere Entertainment (SPHR): Gabelli group discloses 995,826-share, 3.43% position

(Moderate)
(Neutral)
Form Type
SCHEDULE 13D/A

Rhea-AI Filing Summary

Gabelli-affiliated entities reported their current holdings of Sphere Entertainment Co. common stock, jointly beneficially owning 995,826 shares, or 3.43% of the 29,046,853 shares outstanding as of the issuer’s Form 10-Q for the quarter ended June 30, 2026. This amended Schedule 13D is being used even though a short-form schedule could apply, in order to align ongoing communications with Sphere Entertainment’s management with Exchange Act reporting obligations.

The largest positions are held by GAMCO Asset Management Inc. with 550,139 shares (1.89%) and Gabelli Funds LLC with 420,987 shares (1.45%), with smaller holdings across several related entities and by Mario Gabelli personally. The group states it ceased to be a beneficial owner of 5% or more of Sphere Entertainment’s common stock on January 2, 2026, and provides a detailed record of recent trading activity, including multiple sales on August 13, 2026 in the mid‑$170s per share.

Positive

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Negative

  • None.

Filing Explained

The 3.43% disclosed stake remains holder-level ownership, with voting rights narrower than disposition rights for some client-held shares.

The amended filing reports an existing Gabelli-affiliated beneficial stake of 3.43%, with ownership mechanics spread across reporting persons and investment clients; it does not itself change Sphere’s issued share count.

For GAMCO Asset Management, the filing reports 550,139 shares with sole dispositive power but 523,057 shares with sole voting power, because it lacks voting authority over 27,082 reported shares.

For shares held through advisory clients or partnerships, those clients or partnerships have the sole right to receive dividends and sale proceeds, subject to the applicable agreements.

The filing therefore documents beneficial ownership and control limitations at the holder level, rather than a new company financing or an issuer-side ownership change.

Aggregate shares beneficially owned 995,826 shares Total Sphere Entertainment common shares reported as beneficially owned by the Gabelli group
Ownership percentage 3.43% Portion of Sphere Entertainment’s 29,046,853 outstanding shares represented by 995,826 shares
Shares outstanding 29,046,853 shares Sphere Entertainment common shares outstanding per Form 10-Q for quarter ended June 30, 2026
GAMCO Asset Management holdings 550,139 shares (1.89%) Largest individual position among reporting persons in Sphere Entertainment
Gabelli Funds holdings 420,987 shares (1.45%) Second-largest position among the reporting persons in Sphere Entertainment
Key sale on 8/13/2026 141,500 shares at $177.3763 Sale of Sphere Entertainment shares by GAMCO Asset Management Inc. on August 13, 2026
Date fell below 5% ownership January 2, 2026 Date reporting persons ceased to be beneficial owners of 5% or more of common stock
beneficially own financial
"The aggregate number of Securities to which this relates is 995,826 shares, representing 3.43%..."
Beneficially own means having the economic rights and risks of a security—such as the right to receive dividends, sell the shares, or profit from price changes—whether or not your name appears on the official share register. Think of it like renting a car: you use it and reap the benefits even if the title lists someone else. Investors care because beneficial ownership determines who truly controls value, must be disclosed under securities rules, and can signal potential influence or trading activity that affects a stock’s price.
sole voting power financial
"Number of Shares Beneficially Owned by Each Reporting Person With: | 7 | Sole Voting Power 550,139.00"
Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.
sole dispositive power financial
"Number of Shares Beneficially Owned by Each Reporting Person With: | 9 | Sole Dispositive Power 550,139.00"
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.
Schedule 13D regulatory
"The Reporting Persons file the long form pursuant to Section 13d-1 of the Securities Exchange Act..."
A Schedule 13D is a legal document that investors file with regulators when they buy a large enough stake in a company to potentially influence its management or decisions. It provides details about the investor’s intention, ownership stake, and plans, helping other investors understand who is gaining control and what their motives might be.
Proxy Voting Committee financial
"the Proxy Voting Committee of each Fund shall respectively vote that Funds shares"
investment adviser financial
"GAMCO, a wholly-owned subsidiary of GBL, is an investment adviser registered under the Investment Advisers Act"
An investment adviser is a person or firm that professionally manages money and gives recommendations about buying, selling, or holding investments. Like a financial coach or guide, they have a legal duty to act in a client's best financial interest, so their advice, fees and potential conflicts can directly affect returns and risk — making their role important for investors who want informed, accountable help with portfolios.

FAQ

Which Gabelli entity holds the largest stake in Sphere Entertainment Co. (SPHR)?

GAMCO Asset Management Inc. holds the largest disclosed stake, with 550,139 shares of Sphere Entertainment, equal to 1.89% of the outstanding common stock, based on 29,046,853 shares reported in the company’s most recent Form 10-Q.

When did the Gabelli reporting persons fall below 5% ownership of Sphere Entertainment Co. (SPHR)?

The reporting group states it ceased to be beneficial owners of 5% or more of Sphere Entertainment’s common stock on January 2, 2026, and now reports an aggregate holding of 3.43% of the outstanding shares.

How many Sphere Entertainment Co. (SPHR) shares does Gabelli Funds LLC hold?

Gabelli Funds LLC beneficially owns 420,987 Sphere Entertainment shares, representing approximately 1.45% of the issuer’s 29,046,853 shares outstanding, and has sole voting and dispositive power over these shares subject to certain fund-level proxy voting arrangements.

What recent trading activity in Sphere Entertainment Co. (SPHR) did GAMCO Asset Management report?

GAMCO Asset Management reported numerous trades, including several sales on August 13, 2026 such as 141,500 shares at $177.3763 per share, along with smaller purchases and sales in July and early August 2026 at prices generally between the mid‑$130s and mid‑$170s.

Why did the Gabelli reporting persons file a long-form Schedule 13D for Sphere Entertainment Co. (SPHR)?

They state they are filing the long-form Schedule 13D under Section 13d-1 even though they may be eligible for the short-form, to ensure that their regular communications with Sphere Entertainment’s management remain compliant with Exchange Act reporting obligations.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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55826T102

(CUSIP Number)
DAVID GOLDMAN
191 MASON STREET,
GREENWICH, CT, 06830
914-921-5000

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)
08/13/2026

(Date of Event Which Requires Filing of This Statement)


If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).




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SCHEDULE 13D


GAMCO INVESTORS, INC. ET AL
Signature:DAVID GOLDMAN
Name/Title:CHIEF LEGAL OFFICER
Date:08/14/2026
GABELLI FUNDS LLC
Signature:DAVID GOLDMAN
Name/Title:GENERAL COUNSEL
Date:08/14/2026
GAMCO Asset Management Inc.
Signature:DOUGLAS R. JAMIESON
Name/Title:PRESIDENT
Date:08/14/2026
GABELLI & Co INVESTMENT ADVISERS, INC.
Signature:DOUGLAS R. JAMIESON
Name/Title:PRESIDENT
Date:08/14/2026
GABELLI FOUNDATION, INC.
Signature:DAVID GOLDMAN
Name/Title:ATTORNEY-IN-FACT
Date:08/14/2026
MJG ASSOCIATES, INC.
Signature:DAVID GOLDMAN
Name/Title:ATTORNEY-IN-FACT
Date:08/14/2026
GGCP, INC.
Signature:DAVID GOLDMAN
Name/Title:ATTORNEY-IN-FACT
Date:08/14/2026
Associated Capital Group, Inc.
Signature:DAVID GOLDMAN
Name/Title:GENERAL COUNSEL
Date:08/14/2026
GABELLI MARIO J
Signature:DAVID GOLDMAN
Name/Title:ATTORNEY-IN-FACT
Date:08/14/2026