TIM S.A. legal officer resigns

TIM S.A. reported that its Legal Officer, Fabiane Reschke, has submitted her resignation.

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Form Type

6-K

Rhea-AI Filing Summary

TIM S.A. reported that its Legal Officer, Fabiane Reschke, has submitted her resignation. The company thanked her for her commitment and dedication during her tenure and wished her success in her new professional path.

The Board of Directors plans to meet in due course to evaluate the structure of TIM’s Board of Executive Officers following this change.

Key Terms

Legal Officer, Board of Executive Officers, CVM Resolution No. 44/21, foreign private issuer

4 terms

Legal Officer financial

"resignation of Ms. Fabiane Reschke from the position of Legal Officer"

Board of Executive Officers financial

"The Board of Directors will meet in due course to evaluate the structure of the Company's Board of Executive Officers"

CVM Resolution No. 44/21 regulatory

"in accordance with the provisions of CVM Resolution No. 44/21"

foreign private issuer regulatory

"FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER"

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.

FAQ

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What did TIMB disclose in this Form 6-K filing?

TIM S.A. disclosed that its Legal Officer, Fabiane Reschke, resigned from her position. The company issued a market notice, thanked her for her service, and indicated that the Board will evaluate the structure of the executive officers.

Who resigned from TIM S.A. according to the March 31, 2026 notice?

The notice states that Fabiane Reschke resigned from the position of Legal Officer at TIM S.A. The company expressed gratitude for her work and dedication and wished her success in her future professional endeavors.

How will TIMB’s Board respond to the Legal Officer’s resignation?

TIM S.A. said its Board of Directors will meet in due course to evaluate the structure of the company’s Board of Executive Officers. This suggests they will review responsibilities and roles after the Legal Officer’s departure.

Which regulations did TIMB reference in announcing the resignation?

TIM S.A. referenced CVM Resolution No. 44/21 when announcing the resignation of its Legal Officer. This indicates the communication follows Brazilian securities disclosure rules for publicly held companies listed on B3 and the NYSE.

Who signed the investor relations notice for TIMB?

The investor relations notice was signed by Vicente de Moraes Ferreira, identified as Investor Relations Officer of TIM S.A. The accompanying Form 6-K signature block was executed by Chief Executive Officer, Chief Financial Officer and Investor Relations Officer Alberto Mario Griselli.

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

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Accepted by SEC EDGAR 03/31/2026 - 05:42 PM EDT

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: March 31, 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

Resignation of Ms. Fabiane Reschke as Legal Director of TIM S.A.

TIM S.A. ("TIM" or "Company") (B3: TIMS3; NYSE: TIMB), in accordance with the provisions of CVM Resolution No. 44/21, announces that today the Company received the resignation of Ms. Fabiane Reschke from the position of Legal Officer.

TIM expresses its gratitude to Ms. Fabiane Reschke for her commitment and dedication in the performance of her duties throughout her tenure as Legal Officer of the Company and wishes her success in her new professional journey.

The Board of Directors will meet in due course to evaluate the structure of the Company's Board of Executive Officers.

Rio de Janeiro, March 31, 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: March 31, 2026	By:	/s/ Alberto Mario Griselli
		Alberto Mario Griselli
		Chief Executive Officer, Chief Financial Officer and Investor Relations Officer

Source: View Original Filing on SEC EDGAR