[Form 4] Sphere Entertainment Co. Insider Trading Activity

Sphere Entertainment Co. executive vice president, CFO and treasurer Robert H. Langer exercised 10,648 restricted stock units into 10,648 shares of Class A Common Stock on March 13, 2026.

Rhea-AI Filing Summary

Sphere Entertainment Co. executive vice president, CFO and treasurer Robert H. Langer exercised 10,648 restricted stock units into 10,648 shares of Class A Common Stock on March 13, 2026. These RSUs were part of a grant made on March 12, 2025 under the 2020 Employee Stock Plan.

In connection with the vesting and settlement, 5,416 shares were withheld at a price of $105.70 per share to cover tax obligations, leaving Langer with 5,232 shares of Class A Common Stock directly owned after these transactions. The remaining RSUs from the original grant are scheduled to vest in equal parts on March 15, 2027 and March 15, 2028.

Insider Trade Summary

10,648 shares exercised/converted

Exercise 3 txns

Insider Langer Robert H.

Role EVP, CFO & Treasurer

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	10,648	$0.00	$0.00
Exercise	Class A Common Stock	10,648	$0.00	$0.00
Exercise Price or Tax Liability	Class A Common Stock	5,416	$105.70	$572K

Holdings After Transaction: Restricted Stock Units — 21,298 contracts (Direct); Class A Common Stock — 5,232 shares (Direct)

Footnotes (2)

1. F1. Each restricted stock unit ("RSU") was granted on March 12, 2025 under the Sphere Entertainment Co. ("SPHR") 2020 Employee Stock Plan, as amended and represents a right to receive one share of Class A Common Stock or the cash equivalent thereof. One-third of the RSUs vested and were settled on March 13, 2026. One-third of the RSUs are scheduled to vest and settle on March 15, 2027. The remaining one-third of the RSUs are scheduled to vest and settle on March 15, 2028.
2. F2. Represents RSUs of SPHR withheld to satisfy tax withholding obligations in connection with the vesting and settlement of RSUs described in footnote 1, exempt under Rule 16b-3.

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Accepted by SEC EDGAR 03/17/2026 - 04:05 PM Learn about SEC filing dates

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Langer Robert H.

(Last) (First) (Middle)

TWO PENNSYLVANIA PLAZA

(Street)

NEW YORK NY 10121

(City) (State) (Zip)

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

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP, CFO & Treasurer

3. Date of Earliest Transaction (Month/Day/Year)
03/13/2026

4. 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 Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	03/13/2026		M		10,648	A	$0.00(1)	10,648	D
Class A Common Stock	03/13/2026		F(2)		5,416	D	$105.7	5,232	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	(1)	03/13/2026		M			10,648	(1)	03/15/2028	Class A Common Stock	10,648	$0	21,298	D

Explanation of Responses:

1. Each restricted stock unit ("RSU") was granted on March 12, 2025 under the Sphere Entertainment Co. ("SPHR") 2020 Employee Stock Plan, as amended and represents a right to receive one share of Class A Common Stock or the cash equivalent thereof. One-third of the RSUs vested and were settled on March 13, 2026. One-third of the RSUs are scheduled to vest and settle on March 15, 2027. The remaining one-third of the RSUs are scheduled to vest and settle on March 15, 2028.

2. Represents RSUs of SPHR withheld to satisfy tax withholding obligations in connection with the vesting and settlement of RSUs described in footnote 1, exempt under Rule 16b-3.

	/s/ Mark C. Cresitello, Attorney-in-Fact for Robert H. Langer	03/17/2026
	** 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 4 (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.
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