[144] Sphere Entertainment Co. SEC Filing

Rhea-AI Filing Summary

SPHR filed a Form 144 notice for a planned insider sale of Class A shares. The filing shows an intention to sell 10,000 Class A shares through Fidelity Brokerage Services on the NYSE, with an indicated aggregate market value of $805,054.55. The filing notes that 28,447,507 shares of this class are outstanding.

The 10,000 shares to be sold were acquired through restricted stock vesting on 09/15/2022 as compensation from the issuer. The seller, Andrea M. Greenberg, has also sold Class A shares of the same issuer during the past three months, totaling 54,620 shares, for gross proceeds of about $3.60 million across multiple transactions dated 09/11/2025, 09/18/2025, 11/04/2025, and 11/07/2025.

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Class A	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	10000	805054.55	28447507	11/25/2025	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Class A	09/15/2022	Restricted Stock Vesting	Issuer			10000	09/15/2022	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Andrea M. Greenberg Two Penn Plaza New York NY 10121	Class A	09/11/2025	17620	1019317.00
Andrea M. Greenberg Two Penn Plaza New York NY 10121	Class A	09/18/2025	8500	531250.00
Andrea M. Greenberg Two Penn Plaza New York NY 10121	Class A	11/04/2025	20000	1415848.25
Andrea M. Greenberg Two Penn Plaza New York NY 10121	Class A	11/07/2025	8500	638447.22

144: Remarks and Signature

Remarks

Date of Notice

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does the SPHR Form 144 filing disclose?

The Form 144 for SPHR discloses an insider's intention to sell 10,000 Class A shares through Fidelity Brokerage Services on the NYSE, with an indicated aggregate market value of $805,054.55.

How many SPHR shares are outstanding according to this Form 144?

The filing reports that there are 28,447,507 Class A shares outstanding for SPHR at the time of the notice.

Who is selling SPHR shares and how were they acquired?

The seller is Andrea M. Greenberg. The 10,000 Class A shares covered by this notice were acquired on 09/15/2022 through restricted stock vesting from the issuer as compensation.

What SPHR share sales has the insider made in the past three months?

Over the past three months, the insider sold 54,620 Class A shares of SPHR in several transactions dated 09/11/2025, 09/18/2025, 11/04/2025, and 11/07/2025, for total gross proceeds of about $3.60 million.

What is the purpose of a Form 144 filing for SPHR?

A Form 144 filing for SPHR provides notice of a proposed sale of restricted or control securities by an insider or affiliate, including the number of shares, approximate sale date, and broker involved.

On which exchange are the SPHR shares in this Form 144 expected to be sold?

The Form 144 indicates that the Class A shares of SPHR covered by this notice are expected to be sold on the NYSE.