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

Rhea-AI Filing Summary

Sphere Entertainment Co. executive Allen M. Lo, EVP & Chief Legal Officer, has filed an initial Form 3 reporting his holdings in the company. The filing shows that he directly owns 0 shares of Sphere Entertainment’s Class A Common Stock as of the reported date, establishing a baseline for any future insider ownership disclosures.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Lo Allen M.

Role EVP & Chief Legal Officer

Type	Security	Shares	Price	Value
holding	Class A Common Stock	--	--	--

Holdings After Transaction: Class A Common Stock — 0 shares (Direct)

Footnotes (1)

Key Figures

Class A Common Stock holdings: 0.0000 shares Insider filing type: Form 3 Insider role: EVP & Chief Legal Officer

3 metrics

Class A Common Stock holdings 0.0000 shares Total shares following reported event for Allen M. Lo

Insider filing type Form 3 Initial statement of beneficial ownership by officer

Insider role EVP & Chief Legal Officer Officer title for reporting person Allen M. Lo

Key Terms

Form 3, Class A Common Stock, EVP & Chief Legal Officer

3 terms

Form 3 regulatory

"INSIDER FILING DATA (Form 3): {"

Form 3 is the initial public filing that officers, directors and large shareholders must submit to report their ownership of a company’s securities when they become insiders. It acts like an opening inventory sheet that gives investors a starting point to see who holds significant stakes and to spot later trades or potential conflicts of interest, helping assess insider confidence and transparency.

Class A Common Stock financial

""security_title": "Class A Common Stock""

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

EVP & Chief Legal Officer financial

""officer_title": "EVP & Chief Legal Officer""

Understanding Insider Trading Forms →

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

OMB APPROVAL

OMB Number:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

Lo Allen M.

(Last) (First) (Middle)

TWO PENNSYLVANIA PLAZA

(Street)

NEW YORK NEW YORK 10121

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
03/30/2026

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

3a. Foreign Trading Symbol

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

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP & Chief Legal Officer

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)
Class A Common Stock	0	D

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:

Remarks:

Allen M. Lo became an officer of Sphere Entertainment Co. effective March 30, 2026. Exhibit Index: Exhibit 24 - Power of Attorney

	/s/ Mark C. Cresitello, Attorney-in-Fact for Allen M. Lo	04/01/2026
	** 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.
* Form 3: SEC 1473 (03-26)