Sec Form 4 Filing - Next Alt S.a.r.l. @ Optimum Communications, Inc. - 2026-05-29

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

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, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Next Alt S.a.r.l. 2. Issuer Name and Ticker or Trading Symbol Optimum Communications, Inc. [ OPTU] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 14, RUE ROBERT STUMPER 3. Date of Earliest Transaction (MM/DD/YY) 05/29/2026 (Street) GRAND DUCHY OF LUXEMBOURGL-2557 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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 05/29/2026( 1 )( 2 ) 05/29/2026( 1 )( 2 ) D 5,846,652 ( 1 ) D 0 D ( 2 )

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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 7. Title and Amount of Underlying Securities (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 of Derivative Security: 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 Class B common stock $ 0 ( 4 ) 05/29/2026( 2 )( 3 ) 05/29/2026( 2 )( 3 ) D 74,153,348 ( 4 ) ( 4 ) Class A common stock 74,153,348 $ 0 108,731,066 D ( 2 )

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Next Alt S.a.r.l. 14, RUE ROBERT STUMPER GRAND DUCHY OF LUXEMBOURGL-2557 X X Drahi Patrick 14, RUE ROBERT STUMPER GRAND DUCHY OF LUXEMBOURGL-2557 X X Signatures Next Alt S.a r.l. By: /s/ Armelle Koelf Armelle Koelf, pursuant to power of attorney for Next Alt S.a r.l. 06/02/2026 Signature of Reporting Person Date By: /s/ Armelle Koelf Armelle Koelf, pursuant to power of attorney for Patrick Drahi 06/02/2026 Signature of Reporting Person Date

Explanation of Responses:

( 1 )On May 29, 2026, Next Alt S.a r.l. agreed to contribute 5,846,652 shares of Class A common stock of the issuer to Next Partner, L.P., an entity owned and controlled by Next Alt S.a r.l. On May 29, 2026, Next Partner agreed to deliver an aggregate of 5,846,652 shares of Class A common stock of the issuer to CSC Investments II LLC ("CSC"), a wholly-owned subsidiary of the issuer, in exchange for 14,616.63 Preferred Units in CSC. The exchange was approved in advance by the Board of Directors of the issuer pursuant to Rule 16b-3(e) under the Securities Exchange Act of 1934. ( 2 )Next Alt S.a r.l. is an indirect wholly controlled personal holding company of Patrick Drahi. Next Alt S.a r.l. is a party to a stockholders agreement with the issuer pursuant to which Next Alt S.a r.l. has certain rights to appoint directors of the issuer. Each Reporting Person disclaims beneficial ownership of all interests reported on this Form 4 except to the extent of such Reporting Person's pecuniary interests. ( 3 )On May 29, 2026, Next Alt S.a r.l. agreed to contribute 74,153,348 shares of Class B common stock of the issuer to Next Partner, L.P., an entity owned and controlled by Next Alt S.a r.l. On May 29, 2026, Next Partner agreed to deliver an aggregate of 74,153,348 shares of Class B common stock of the issuer to CSC Investments II LLC ("CSC"), a wholly-owned subsidiary of the issuer, in exchange for 185,383.37 Preferred Units in CSC. The exchange was approved in advance by the Board of Directors of the issuer pursuant to Rule 16b-3(e) under the Securities Exchange Act of 1934. ( 4 )Each share of Class B common stock of the issuer is convertible into one share of Class A common stock of the issuer for no consideration.

Remarks: Exhibit List: Exhibit 24.1 - Power of Attorney for Next Alt S.a r.l; Exhibit 24.2 - Power of Attorney for Patrick Drahi

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).

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