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TIM S.A.

TIM S.A. is one of Brazil's three major wireless carriers, operating under CEO Alberto Mario Griselli with over 60 million mobile subscribers.

TIM S.A.

TIM S.A. is a publicly traded Brazilian telecommunications company, formed in 1998 during the privatization of Brazil's telecom sector and originally controlled by Telecom Italia. TIM Brasil launched mobile operations in 2002, consolidating several regional operators under a single national brand. In 2022, Telecom Italia sold its controlling stake to IHS Towers, and the company now operates with a dispersed shareholder base on the São Paulo stock exchange under the ticker TIMS3. TIM owns and operates one of the three major wireless networks in Brazil, alongside Vivo (Telefônica Brasil) and Claro (América Móvil). Its infrastructure spans 4G and 5G coverage across urban and suburban Brazil, with a particular density in the Southeast region. The company competes on prepaid and postpaid mobile plans, broadband through its TIM Live fiber network, and increasingly on B2B enterprise connectivity. In 2022, TIM acquired Oi's mobile assets in a consortium deal with Vivo and Claro, adding millions of subscribers and spectrum rights to its portfolio. TIM employs approximately 9,500 people and generated net revenue of roughly R$23 billion in 2024. It has invested heavily in fiber infrastructure, with TIM Live passing over 15 million households. The company holds spectrum licenses across multiple bands and is in the early stages of 5G standalone deployment. Its corporate center remains in Rio de Janeiro, with a major operational footprint in São Paulo. TIM also operates Instituto TIM, a social initiative focused on science and technology education. In January 2025: TIM completed the migration of Oi's mobile subscribers onto its own network, finalizing the operational integration of the 2022 asset acquisition. TIM's structure as a publicly traded pure-play Brazilian telecom, with no controlling foreign telecom parent, is uncommon. Since Telecom Italia's exit, the company operates under a collegiate governance model with a professional board and no single majority shareholder. Alberto Griselli, CEO since 2019, leads a management team that runs TIM as a network operator competing through infrastructure ownership rather than content or media verticals — a focused capex-intensive posture distinct from Latin American telecom peers that bundle pay-TV and media.

Website
tim.com.br

General information

Firm type

other

Year founded

1998

AUM

Undisclosed

Location

Region

Latin America

Country

Brazil

City

Rio de Janeiro

Corporate office

Rio de Janeiro, Brazil

Principals

Alberto Mario Griselli

Chief Executive Officer

Sector focus

Telecommunications

Frequently asked questions

Who controls TIM S.A. after Telecom Italia's exit?

TIM Brasil no longer has a single controlling shareholder. In 2022, Telecom Italia sold its majority stake to IHS Towers, which subsequently reduced its position. Today, TIM S.A. operates with a dispersed shareholding structure on the B3 stock exchange, managed by a professional board and executive team led by CEO Alberto Mario Griselli (per the firm's official communications).

What role did the Oi asset acquisition play in TIM's scale?

In 2022, TIM participated in a consortium with Vivo and Claro to acquire Oi's mobile operations for roughly R$16.5 billion. TIM's portion added around 14.5 million subscribers and valuable spectrum, allowing it to close the gap with its two main competitors. The full network migration finished in January 2025, cementing a more balanced three-player market.

Does TIM operate fiber-to-the-home broadband?

Yes, TIM Live is the company's FTTH broadband service, passing more than 15 million households primarily in Brazil's Southeast. It represents TIM's strategy to diversify revenue beyond mobile by becoming a convergent connectivity provider, competing with Claro's NET-branded cable network and Vivo's fiber offers.

What spectrum bands does TIM hold for 5G?

TIM secured spectrum in the 3.5 GHz, 2.3 GHz, and 700 MHz bands during Brazil's 2021 5G auction. It was an early adopter of 5G standalone architecture in the country, launching commercial service in select cities in 2022 and expanding coverage through 2024, targeting enterprise use cases alongside consumer mobile broadband.

How does TIM's structure differ from Vivo and Claro in Brazil?

Vivo is controlled by Spain's Telefónica, and Claro is the Brazilian arm of Mexico's América Móvil. TIM, by contrast, no longer answers to a foreign telecom parent after Telecom Italia's divestiture. This independence allows management to prioritize long-term infrastructure returns without the strategic pull of a global parent's media or content agenda.

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