[Form 3] Sphere Entertainment Co. Initial Statement of Beneficial Ownership

Rhea-AI Filing Summary

Sphere Entertainment Co. (SPHR) filed an initial Form 3 reporting that the reporting person, Kathleen M. Dolan 2012 Descendants Trust, has no securities beneficially owned in the issuer as of the event date 09/08/2025. The form identifies the reporting persons address and that the filing was executed by an attorney-in-fact, Brian G. Sweeney, on 09/10/2025. The filing is a single-person submission and lists the reporting persons relationship to the issuer as an officer.

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Kathleen M. Dolan 2012 Descendants Trust

(Last) (First) (Middle)

C/O RICHARD BACCARI

MLC VENTURES LLC, PO BOX 1014

(Street)

YORKTOWN HEIGHTS NY 10598

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
09/08/2025

3. Issuer Name and Ticker or Trading Symbol
Sphere Entertainment Co. [ SPHR ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
	Officer (give title below)	X	Other (specify below)
			Member of 13(d) Group

5. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

No securities are beneficially owned.

	KATHLEEN M. DOLAN 2012 DESCENDANTS TRUST By: /s/ Brian G. Sweeney, Attorney-in-fact	09/10/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did the Form 3 from Sphere Entertainment (SPHR) report?

The Form 3 states that Kathleen M. Dolan 2012 Descendants Trust owns no securities of Sphere Entertainment as of 09/08/2025.

Who filed the Form 3 for SPHR and when was it signed?

The filing lists the reporting person as Kathleen M. Dolan 2012 Descendants Trust and was signed by attorney-in-fact Brian G. Sweeney on 09/10/2025.

What is the reporting persons relationship to Sphere Entertainment on the Form 3?

The form checks the box indicating the reporting person is an Officer of the issuer.

Does the Form 3 disclose any derivative or direct holdings for SPHR?

No; the filing explicitly states "No securities are beneficially owned."

Was this Form 3 filed individually or jointly?

The form indicates it was filed by one reporting person (individual filing).