SCHEDULE 13G/A 0001360587 XXXXXXXX LIVE 3 Class A ordinary shares 03/31/2025 0001866501 Wallbox N.V. N94209108 Carrer Del Foc, 68 Barcelona U3 08038 Rule 13d-1(d) Iberdrola, S.A. U3 0.00 22838678.00 0.00 22838678.00 22838678.00 N 8.6 CO Row 6, 8 and 9 - Consists of 22,838,678 Class A ordinary shares. Row 11 - Represents the percentage of ownership of Class A ordinary shares of the Issuer as of the date hereof, based upon 237,362,279 Class A ordinary shares outstanding as of December 31, 2024, and an additional 26,707,142 Class A ordinary shares, issued in the Issuer's private placement that closed on February 21, 2025, both of which are disclosed in the Issuer's annual report on Form 20-F filed with the Securities and Exchange Commission ("SEC") on May 6, 2025. Iberdrola Participaciones, S.A.U. U3 0.00 22838678.00 0.00 22838678.00 22838678.00 N 8.6 CO Row 6, 8 and 9 - Consists of 22,838,678 Class A ordinary shares. Row 11 - Represents the percentage of ownership of Class A ordinary shares of the Issuer as of the date hereof, based upon 237,362,279 Class A ordinary shares outstanding as of December 31, 2024, and an additional 26,707,142 Class A ordinary shares, issued in the Issuer's private placement that closed on February 21, 2025, both of which are disclosed in the Issuer's annual report on Form 20-F filed with the SEC on May 6, 2025. Inversiones Financieras Perseo, S.L.U. U3 0.00 22838678.00 0.00 22838678.00 22838678.00 N 8.6 CO Row 6, 8 and 9 - Consists of 22,838,678 Class A ordinary shares. Row 11 - Represents the percentage of ownership of Class A ordinary shares of the Issuer as of the date hereof, based upon 237,362,279 Class A ordinary shares outstanding as of December 31, 2024, and an additional 26,707,142 Class A ordinary shares, issued in the Issuer's private placement that closed on February 21, 2025, both of which are disclosed in the Issuer's annual report on Form 20-F filed with the SEC on May 6, 2025. Wallbox N.V. Carrer Del Foc, 68, Barcelona, Spain, 08038 This Schedule 13G/A is being filed by Iberdrola, S.A., Iberdrola Participaciones, S.A.U. and Inversiones Financieras Perseo, S.L.U. (each a "Reporting Person", and together, the "Reporting Persons"). See Exhibit A for the Reporting Persons' agreement for a joint filing of a single statement on their behalf. The address of the principal business office of Iberdrola, S.A. is: Plaza Euskadi, 5, Bilbao (Bizkaia), Spain 48009 The address of the principal business office of Iberdrola Participaciones, S.A.U. is: Plaza Euskadi, 5, Bilbao (Bizkaia), Spain 48009 The address of the principal business office of Inversiones Financieras Perseo, S.L.U. is Plaza Euskadi, 5, Bilbao (Bizkaia), Spain 48009 Please see response to Item 4 on each cover sheet for each Reporting Person. Y See the response to Item 9 for each Reporting Person on the relevant attached cover page. See the response to Item 11 for each Reporting Person on the relevant attached cover page. See the response to Item 5 for each Reporting Person on the relevant attached cover page. See the response to Item 6 for each Reporting Person on the relevant attached cover page. See the response to Item 7 for each Reporting Person on the relevant attached cover page. See the response to Item 8 for each Reporting Person on the relevant attached cover page. Y Y Y Y Y Y EXHIBIT A JOINT FILING AGREEMENT Iberdrola, S.A. /s/ Juan Jose Zuniga Benavides 05/21/2025 Iberdrola Participaciones, S.A.U. /s/ Felix Sobrino Martinez 05/21/2025 /s/ Javier Salazar Blanco 05/21/2025 Inversiones Financieras Perseo, S.L.U. /s/ Agustin Delgado Martin 05/21/2025 /s/ Javier Salazar Blanco 05/21/2025