TIM S.A.

For the period ended Sep 30, 2026. Filed Sep 11, 2026.

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Sep 30, 2026 · Filed Sep 11, 2026

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6-K 1 timbcvm358aug26_6k.htm 6-K

**UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

**WASHINGTON, D.C. 20549

FORM 6-K

**REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Date of Report: September 10, 2026

Commission File Number: 001-39570

**TIM S.A.

**(Exact name of Registrant as specified in its Charter)

**João Cabral de Melo Neto Avenue, 850 – North Tower – 12 th floor

22775-057 Rio de Janeiro, RJ, Brazil

**(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F☒ Form 40-F☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1).

Yes☐ No☒

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7).

Yes☐ No☒

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	TIM S.A.
Date: September 10, 2026	By:	/s/ Alberto Mario Griselli
		Alberto Mario Griselli
		Chief Executive Officer

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