TIM S.A. marks 18th year in ISE portfolio

TIM S.A. filed a Form 6-K to announce that it has been included in the ISE portfolio for the 18th consecutive year.

Rhea-AI Filing Summary

TIM S.A. filed a Form 6-K to announce that it has been included in the ISE portfolio for the 18th consecutive year. The company states it is the telecommunications company with the longest continuous presence in this index, highlighting its ongoing focus on social, environmental and governance practices.

Key Figures

ISE inclusion streak: 18 consecutive years

1 metrics

ISE inclusion streak 18 consecutive years TIM S.A. presence in ISE portfolio

Key Terms

Form 6-K, foreign private issuer, ISE, social, environmental and governance aspects

4 terms

Form 6-K regulatory

"FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER"

A Form 6-K is a report that companies listed in certain countries file to provide important updates, such as financial results, corporate changes, or other significant information, to regulators and investors. It functions like an official company update or news release, helping investors stay informed about developments that could affect their investment decisions.

foreign private issuer regulatory

"REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16"

A foreign private issuer is a company organized outside the United States that meets tests showing it is primarily foreign-controlled and therefore qualifies for a different set of U.S. reporting rules. For investors, that means the company files less frequent or differently formatted disclosures with U.S. regulators and may follow home-country accounting and governance practices, so buying its stock is like dining at a well-reviewed restaurant that follows its home kitchen’s rules instead of the local menu — you get access but should check what standards apply.

ISE financial

"part of the select group of companies that compose the ISE"

social, environmental and governance aspects financial

"reaffirming its commitment to the continuous management of social, environmental and governance aspects"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did TIMB (TIM S.A.) announce in this Form 6-K?

TIM S.A. announced that it remains part of the ISE portfolio for the 18th consecutive year. The company highlights this as recognition of its ongoing management of social, environmental and governance aspects in its business activities.

What is significant about TIMB’s inclusion in the ISE portfolio?

TIM S.A. states it has been in the ISE portfolio for 18 consecutive years, the longest streak among telecommunications companies. This long-standing inclusion underscores its consistent focus on social, environmental and governance management practices.

How long has TIMB been in the ISE portfolio?

TIM S.A. reports it has been part of the ISE portfolio for 18 consecutive years. This extended period indicates ongoing adherence to the index’s criteria around social, environmental and governance management expectations for listed companies.

What aspects does TIMB say it focuses on to stay in the ISE?

TIM S.A. emphasizes continuous management of social, environmental and governance aspects. The company links its 18-year presence in the ISE portfolio to these practices, which it says help create value for shareholders and other stakeholders.

How does TIMB describe the benefit of its ISE participation for investors?

TIM S.A. says that maintaining its position in the ISE portfolio reflects its commitment to social, environmental and governance aspects. The company notes this commitment aims at creating value for its shareholders and other stakeholders over time.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/05/2026 - 07:11 PM EDT Learn about SEC filing dates

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: May 5, 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 ☒

 

TIM S.A.

Publicly-held company

CNPJ/MF 02.421.421/0001-11

NIRE 33.300.324.631

NOTICE TO THE MARKET

TIM CONFIRMED FOR THE 18TH CONSECUTIVE YEAR IN THE ISE PORTFOLIO

TIM S.A. ("TIM" or "Company") (B3: TIMS3; NYSE: TIMB) hereby informs its shareholders and the market in general that, for the 18th consecutive year, it is part of the select group of companies that compose the ISE. TIM is the company in the telecommunications sector that has remained in the ISE portfolio for the most consecutive years, reaffirming its commitment to the continuous management of social, environmental and governance aspects, creating value for its shareholders and other stakeholders.

Rio de Janeiro, May 5, 2026.

TIM S.A.

Vicente de Moraes Ferreira

Investor Relations Officer

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: May 5, 2026		By:	/s/ Alberto Mario Griselli
			Alberto Mario Griselli
			Chief Executive Officer