SPHR

Sphere Entertainment Co.

A company behind the Sphere, the giant glowing ball-shaped Las Vegas arena wrapped in a huge LED screen that hosts concerts, original shows like The Wizard of Oz at Sphere, and brand events. Born from the Madison Square Garden family, it spun off in 2020 and again in 2023 to become its own business, alongside MSG Networks, which broadcasts New York Knicks and Rangers games. Its name is simply its shape—the building is literally a sphere.

CUSIP: 55826T102Communication ServicesUS4 holders

Ownership Activity Financials Filings

Schedule 13D / 13G filings

Ariel Investments, LLC

13G/APassive

% of class5.8%

Shares1.67M

FiledAug 14, 2026

GAMCO Asset Management Inc.

13D/AActivist

% of class1.9%

Shares550.1K

FiledAug 14, 2026

The Reporting Persons file the long form Schedule 13D pursuant to Section 13d-1 of the Securities Exchange Act of 1934 (the "Act") even though they may be technically eligible to file the short form Schedule G. Because the Reporting Persons may regularly communicate with the Issuer's management, filing the Schedule 13D ensures that these conversations are compliant with the reporting obligations under the Exchange Act.

GABELLI FUNDS LLC

13D/AActivist

% of class1.5%

Shares421.0K

FiledAug 14, 2026

MJG ASSOCIATES, INC.

13D/AActivist

% of class0.1%

Shares14.5K

FiledAug 14, 2026

GAMCO INVESTORS, INC. ET AL

13D/AActivist

% of class0%

Shares80

FiledAug 14, 2026

GABELLI & Co INVESTMENT ADVISERS, INC.

13D/AActivist

% of class0%

Shares2.4K

FiledAug 14, 2026

GABELLI FOUNDATION, INC.

13D/AActivist

% of class0%

Shares1.3K

FiledAug 14, 2026

GGCP, INC.

13D/AActivist

% of class0%

Shares1.7K

FiledAug 14, 2026

Associated Capital Group, Inc.

13D/AActivist

% of class0%

Shares300

FiledAug 14, 2026

GABELLI MARIO J

13D/AActivist

% of class0%

Shares4.4K

FiledAug 14, 2026

Holder	Schedule	% of class	Shares	Filed
Ariel Investments, LLC	13G/APassive	5.8%	1.67M	Aug 14, 2026
GAMCO Asset Management Inc.	13D/AActivist	1.9%	550.1K	Aug 14, 2026
The Reporting Persons file the long form Schedule 13D pursuant to Section 13d-1 of the Securities Exchange Act of 1934 (the "Act") even though they may be technically eligible to file the short form Schedule G. Because the Reporting Persons may regularly communicate with the Issuer's management, filing the Schedule 13D ensures that these conversations are compliant with the reporting obligations under the Exchange Act.
GABELLI FUNDS LLC	13D/AActivist	1.5%	421.0K	Aug 14, 2026
The Reporting Persons file the long form Schedule 13D pursuant to Section 13d-1 of the Securities Exchange Act of 1934 (the "Act") even though they may be technically eligible to file the short form Schedule G. Because the Reporting Persons may regularly communicate with the Issuer's management, filing the Schedule 13D ensures that these conversations are compliant with the reporting obligations under the Exchange Act.
MJG ASSOCIATES, INC.	13D/AActivist	0.1%	14.5K	Aug 14, 2026
The Reporting Persons file the long form Schedule 13D pursuant to Section 13d-1 of the Securities Exchange Act of 1934 (the "Act") even though they may be technically eligible to file the short form Schedule G. Because the Reporting Persons may regularly communicate with the Issuer's management, filing the Schedule 13D ensures that these conversations are compliant with the reporting obligations under the Exchange Act.
GAMCO INVESTORS, INC. ET AL	13D/AActivist	0%	80	Aug 14, 2026
The Reporting Persons file the long form Schedule 13D pursuant to Section 13d-1 of the Securities Exchange Act of 1934 (the "Act") even though they may be technically eligible to file the short form Schedule G. Because the Reporting Persons may regularly communicate with the Issuer's management, filing the Schedule 13D ensures that these conversations are compliant with the reporting obligations under the Exchange Act.
GABELLI & Co INVESTMENT ADVISERS, INC.	13D/AActivist	0%	2.4K	Aug 14, 2026
The Reporting Persons file the long form Schedule 13D pursuant to Section 13d-1 of the Securities Exchange Act of 1934 (the "Act") even though they may be technically eligible to file the short form Schedule G. Because the Reporting Persons may regularly communicate with the Issuer's management, filing the Schedule 13D ensures that these conversations are compliant with the reporting obligations under the Exchange Act.
GABELLI FOUNDATION, INC.	13D/AActivist	0%	1.3K	Aug 14, 2026
The Reporting Persons file the long form Schedule 13D pursuant to Section 13d-1 of the Securities Exchange Act of 1934 (the "Act") even though they may be technically eligible to file the short form Schedule G. Because the Reporting Persons may regularly communicate with the Issuer's management, filing the Schedule 13D ensures that these conversations are compliant with the reporting obligations under the Exchange Act.
GGCP, INC.	13D/AActivist	0%	1.7K	Aug 14, 2026
The Reporting Persons file the long form Schedule 13D pursuant to Section 13d-1 of the Securities Exchange Act of 1934 (the "Act") even though they may be technically eligible to file the short form Schedule G. Because the Reporting Persons may regularly communicate with the Issuer's management, filing the Schedule 13D ensures that these conversations are compliant with the reporting obligations under the Exchange Act.
Associated Capital Group, Inc.	13D/AActivist	0%	300	Aug 14, 2026
The Reporting Persons file the long form Schedule 13D pursuant to Section 13d-1 of the Securities Exchange Act of 1934 (the "Act") even though they may be technically eligible to file the short form Schedule G. Because the Reporting Persons may regularly communicate with the Issuer's management, filing the Schedule 13D ensures that these conversations are compliant with the reporting obligations under the Exchange Act.
GABELLI MARIO J	13D/AActivist	0%	4.4K	Aug 14, 2026
The Reporting Persons file the long form Schedule 13D pursuant to Section 13d-1 of the Securities Exchange Act of 1934 (the "Act") even though they may be technically eligible to file the short form Schedule G. Because the Reporting Persons may regularly communicate with the Issuer's management, filing the Schedule 13D ensures that these conversations are compliant with the reporting obligations under the Exchange Act.