Tranche Update on Telefônica Brasil S.A.'s Equity Buyback Plan announced on February 15, 2023.

Telefonica Brasil S.A. is a mobile telecommunications company in Brazil offering postpaid mobile services. The Company also operates as a fixed telecommunications company in the state of Sao Paulo. The Company markets its mobile services under its Vivo brand. It offers its clients a portfolio of products, including mobile and fixed voice, mobile data, fixed broadband, ultra-fast broadband, Pay television, information technology and digital services. Its operations consist of local and long distance fixed telephone services; mobile services, including value-added services; data services, including broadband services and mobile data services; Pay television services through direct to home (DTH), Internet protocol television (IPTV) and cable; network services, such as rental of facilities, as well as other services; wholesale services, including interconnection; digital services; services designed specifically for corporate customers, and the sale of wireless devices and accessories.