TIM S.A. filed a Form 6-K with the SEC on October 30, 2026, disclosing that its Board of Directors approved the incorporation of wholly-owned subsidiary I-Systems Soluções de Infraestrutura S.A. into TIM, with an Extraordinary Shareholders' Meeting called for November 30, 2026 to resolve upon the transaction.

Key Highlights

  • Transaction approved: TIM S.A.'s Board of Directors approved the incorporation of I-Systems Soluções de Infraestrutura S.A. into TIM on October 30, 2026.
  • Book value appraised: I-Systems' shareholders' equity was appraised at R$1,562,205,580.51 based on book value as of July 31, 2026, per an appraisal report issued by APSIS Consultoria e Avaliações Ltda.
  • No new shares issued: Because I-Systems is a wholly-owned subsidiary, the Incorporation will not result in any increase in capital stock, issuance of new shares, or change in shareholding structure.
  • Regulatory approval obtained: ANATEL approved the transaction via Decision No. 277 of October 16, 2026 and Act No. 13,546 of October 27, 2026.
  • Target effective date: Management expects the Incorporation to become effective on December 1, 2026, subject to satisfaction of a Condition Precedent related to operational and technological integration.
  • Shareholders' Meeting: An Extraordinary Shareholders' Meeting has been called for November 30, 2026 to vote on the Incorporation.

TIM S.A. Moves to Absorb Fiber Unit I-Systems into Core Structure

According to the filing, TIM S.A. (NYSE:TIMB) disclosed that on October 30, 2026, its Board of Directors approved a proposal to incorporate I-Systems Soluções de Infraestrutura S.A., a privately-held, wholly-owned subsidiary operating in Brazil's neutral fiber optic network sector, directly into TIM. The transaction is structured as a full absorption: upon the Effective Date, I-Systems will be dissolved and universally succeeded by TIM in all its rights and obligations, with all I-Systems shares canceled without replacement.

The filing states that I-Systems' shareholders' equity was appraised at R$1,562,205,580.51 based on book value as of July 31, 2026, as determined by APSIS Consultoria e Avaliações Ltda. Because I-Systems is wholly owned by TIM, the company disclosed that no share exchange ratio applies and there will be no withdrawal rights for TIM shareholders as a result of the transaction. The filing further states that "no significant costs that could materially impact the Company are expected" and that "no material additional risks have been identified beyond those already inherent to the activities currently carried out by the Company and I-Systems."

The company described the Incorporation as "aligned with the Company's strategy for the broadband and fiber optic infrastructure segment," citing expected benefits including simplification of the TIM Group's corporate structure, integration of I-Systems' assets and teams, consolidation of fiber optic infrastructure operations into a single entity, and strengthening of the company's position in the broadband and FTTH segment. Consummation remains subject to a Condition Precedent covering completion of operational and technological integration procedures. If that condition is not met by the November 30, 2026 Meeting, the filing states that management is authorized to certify its satisfaction and establish a new Effective Date.

What Was Disclosed

TIM S.A. disclosed its Board's approval of a plan to incorporate wholly-owned subsidiary I-Systems into TIM, with an appraised book value of R$1,562,205,580.51 as of July 31, 2026, an Extraordinary Shareholders' Meeting scheduled for November 30, 2026, and a targeted Effective Date of December 1, 2026.