Banco Santander, S.A. ("Santander"), pursuant to the provisions of the Spanish Securities Market Act (Ley del Mercado de Valores), hereby announces the following:

OTHER RELEVANT INFORMATION

Santander hereby advises that the presentation of Grupo Santander´s results for the third quarter of 2021 will take place tomorrow, Wednesday October 27, 2021. A presentation will be given to analysts via webcast at 10:00 a.m. (Madrid time), followed by a meeting with journalists at 12:00 p.m, where applicable covid19 safety protocols will be followed.

Both events will take place at Ciudad Grupo Santander - Boadilla del Monte (Madrid). The presentation to analysts can be followed online on Santander's corporate website, www.santander.com, and will be made public prior to its commencement via its notification to the CNMV and publication on the aforementioned corporate website.

Boadilla del Monte (Madrid), 26 October 2021