X0609 4 2026-05-29 0001702780 Optimum Communications, Inc. OPTU 0001709662 Next Alt S.a.r.l. true 14, RUE ROBERT STUMPER GRAND DUCHY OF LUXEMBOURG N4 L-2557 LUXEMBOURG true true 0001709689 Drahi Patrick true 14, RUE ROBERT STUMPER GRAND DUCHY OF LUXEMBOURG N4 L-2557 LUXEMBOURG true true false Class A common stock 2026-05-29 2026-05-29 4 D 0 5846652 D 0 D Class B common stock 0 2026-05-29 2026-05-29 4 D 0 74153348 0 D Class A common stock 74153348 108731066 D 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. 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. 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. 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. Exhibit List: Exhibit 24.1 - Power of Attorney for Next Alt S.a r.l; Exhibit 24.2 - Power of Attorney for Patrick Drahi Next Alt S.a r.l. By: /s/ Armelle Koelf Armelle Koelf, pursuant to power of attorney for Next Alt S.a r.l. 2026-06-02 By: /s/ Armelle Koelf Armelle Koelf, pursuant to power of attorney for Patrick Drahi 2026-06-02