Fitch keeps TIM S.A. (NYSE: TIMB) at AAA (bra) with Stable Outlook

Rhea-AI Filing Summary

TIM S.A. reported that Fitch Ratings has affirmed its National Long-Term Rating at ‘AAA (bra)’ with a Stable Outlook. This confirmation indicates Fitch continues to view the company’s credit profile favorably within its Brazilian rating scale.

The company communicated the decision to shareholders and the broader market through this notice, referencing Fitch’s original report for further detail.

Key Figures

Fitch National Long-Term Rating: AAA (bra) Rating Outlook: Stable Disclosure date: June 16, 2026

3 metrics

Fitch National Long-Term Rating AAA (bra) Affirmed for TIM S.A.

Rating Outlook Stable Outlook on AAA (bra) National Long-Term Rating

Disclosure date June 16, 2026 Date of TIM S.A.’s market notice

Key Terms

Form 6-K, National Long-Term Rating, AAA (bra), Stable Outlook

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.

National Long-Term Rating financial

"Fitch has affirmed TIM S.A.’s National Long-Term Rating"

AAA (bra) financial

"National Long-Term Rating at ‘AAA (bra)’; Outlook Stable"

Stable Outlook financial

"at ‘AAA (bra)’, with a Stable Outlook"

A stable outlook is a credit-rating agency’s view that a company’s credit rating is unlikely to change over the medium term, indicating expected steadiness in its financial condition and ability to meet obligations. For investors it matters because a stable outlook signals lower likelihood of sudden changes to borrowing costs, dividend capacity or default risk—like a calm weather forecast, it helps set expectations about near-term risk and return.

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Form 6-K: How Foreign Companies Report to the SEC →

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: June 16, 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

Corporate Taxpayer's ID (CNPJ/MF): 02.421.421/0001-11

Corporate Registry (NIRE): 33.300.324.631

NOTICE TO THE MARKET

Fitch has affirmed TIM S.A.’s National Long-Term Rating at ‘AAA (bra)’; Outlook Stable.

TIM S.A. ("TSA" or “Company”) (B3: TIMS3; NYSE: TIMB), informs its shareholders, the market in general and other interested parties that, yesterday, the credit rating agency Fitch Ratings (“Fitch”) has affirmed to the Company the National Long-Term Rating at ‘AAA (bra)’, with a Stable Outlook.

The original Fitch’s note is available for access here.

Rio de Janeiro, June 16th, 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: June 16, 2026		By:	/s/ Alberto Mario Griselli
			Alberto Mario Griselli
			Chief Executive Officer

FAQ

What did Fitch Ratings announce about TIM S.A. (TIMB)?

Fitch Ratings affirmed TIM S.A.’s National Long-Term Rating at ‘AAA (bra)’ with a Stable Outlook. The company disclosed that Fitch’s decision confirms the existing rating level and outlook, and pointed investors to Fitch’s original note for further information.

What is TIM S.A.’s current Fitch National Long-Term Rating?

TIM S.A.’s current Fitch National Long-Term Rating is ‘AAA (bra)’. The company stated that Fitch affirmed this rating and kept the Outlook Stable, indicating no change from the prior assessment within Fitch’s Brazilian rating scale.

What Outlook did Fitch assign to TIM S.A.’s rating?

Fitch assigned a Stable Outlook to TIM S.A.’s ‘AAA (bra)’ National Long-Term Rating. According to the company’s notice, this means Fitch did not change its forward-looking view on the rating when it reaffirmed the assessment.

When did TIM S.A. disclose Fitch’s rating affirmation?

TIM S.A. disclosed Fitch’s rating affirmation in a market notice dated June 16, 2026. The company said Fitch had taken the rating action the previous day and confirmed the ‘AAA (bra)’ National Long-Term Rating with a Stable Outlook.

Where can investors find Fitch’s detailed report on TIM S.A. (TIMB)?

TIM S.A. indicated that the original Fitch report is available through a link referenced in its notice. The company’s communication states that Fitch’s note can be accessed externally for more detailed information on the rating affirmation.