TIM S.A. (NYSE: TIMB) proposes R$390M interest on shareholders’ equity

Rhea-AI Filing Summary

TIM S.A. reported that its Fiscal Council met virtually and endorsed management’s proposal to distribute interest on shareholders’ equity totaling R$390,000,000.00. The proposal corresponds to a gross amount of R$0.1632708888 per share.

Shareholders of record on March 23rd, 2026 will be entitled to receive the payment, with shares trading ex-rights after that date. Payment is scheduled to occur by April 30th, 2026, with 17.5% income tax withholding, except for investors with differentiated or exempt tax treatment. The Fiscal Council issued a formal favorable opinion for submission of this proposal to the Board of Directors.

Insights

Equity income and corporate governance analyst

TIM S.A. advances a sizable cash distribution via interest on equity, backed by its Fiscal Council.

TIM S.A. plans to distribute R$390,000,000.00 as interest on shareholders’ equity, at R$0.1632708888 per share. This instrument is commonly used in Brazil as a tax-efficient way to remunerate equity holders, with the payment treated differently from traditional dividends under local rules.

The Fiscal Council’s favorable opinion, grounded on information from management, supports moving the proposal to the Board of Directors, reflecting alignment between oversight and management. The timeline is clearly defined, with a record date of March 23rd, 2026 and payment by April 30th, 2026, while a statutory 17.5% withholding tax will apply except where exemptions or special regimes exist.

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 19, 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 333.0032463-1

MINUTES OF THE FISCAL COUNCIL’S EXTRAORDINARY MEETING

HELD ON MARCH 18^TH, 2026

DATE, TIME AND PLACE: March 18^th, 2026, at 4.00 p.m. Due to the importance and urgency of the matter on the Agenda, the meeting was held in the form of a virtual deliberative circuit, as provided in the 2^nd paragraph of Section 40 of TIM S.A.’s By-laws (“Company”).

PRESENCE: The Fiscal Council’s Meeting of the Company was held with the presence of Messrs. Walmir Urbano Kesseli, Elias de Matos Brito and Heloisa Belotti Bedicks, regular members of the Company’s Fiscal Council (“CF”), with Mrs. Fabiane Reschke, Secretary, also attended the meeting.

AGENDA: Evaluation on the payment proposal of the Company’s interest on shareholders’ equity (“IE”).

CLARIFICATIONS AND RESOLUTIONS: Initially, it is noted that the meeting was held jointly with the Statutory Audit Committee (“CAE”) of the Company, during discussions on the item on the Agenda. Upon the review of the material presented and filed at the Company’s head office, and based on the information provided and discussions of the subjects included on the Agenda, the Fiscal Council members registered their considerations and discussions as follows:

Evaluation on the payment proposal of the Company’s interest on shareholders’ equity (“IE”).

Initially, a brief introduction was presented on the calculation methodology used for the payment of Interest on Equity ("IE") by the Company, as well as the management proposal for the distribution as IE, as follows: (i) the distribution of profits in the amount of R$390,000,000.00 (three hundred and ninety million reais) at R$0.1632708888 (zero point one, six, three, two, seven, zero, eight, eight, eight, eight cents) of gross value per share; (ii) payment will be made until April 30^th, 2026, without the application of any monetary restatement index; (iii) shall be considered the date March 23^rd, 2026, to identify the shareholders entitled to receive such amounts. Therefore, the shares acquired after said date will be traded ex direito of IE distribution; and (iv) The withholding of Income Tax will be of 17.5% (seventeen point five percent) on the occasion of the credit of the IE, except for the shareholders who have differentiated taxation or who are exempt from said taxation. The gross amount per share may be modified due to the variation in the number of treasury shares.

CONT. OF MINUTES OF THE FISCAL COUNCIL’S MEETING OF TIM S.A.

March 18^th, 2026

After the clarifications provided, the members of the Fiscal Council thanked and expressed in favor of the management proposal.

CLOSING: With no further issues to discuss, the meeting was adjourned, and these minutes drafted as summary, read, approved, and signed by all attendees CF Members.

I herein certify that these minutes are the faithful copy of the original version duly recorded in the respective corporate book.

Rio de Janeiro (RJ), March 18^th, 2026.

FABIANE RESCHKE

Secretary

 

TIM S.A.

Publicly Held Company

CNPJ/MF 02.421.421/0001-11

NIRE 333.0032463-1

FISCAL COUNCIL’S OPINION

The Members of the Fiscal Council of TIM S.A. ("Company"), in the exercise of their attributions and legal duties, as provided in Article 163 of the Brazilian Corporate Law, based on the information provided and the clarifications received by the Company's management, expressed their favorable opinion on the presentation, to the Board of Directors of the Company, of the proposal for the distribution as Interest on Shareholders’ Equity in the amount of R$390,000,000.00 (three hundred and ninety million reais) at R$0.1632708888 (zero point one, six, three, two, seven, zero, eight, eight, eight, eight cents) of gross value per share, for payment to be made until April 30^th, 2026, without the application of any monetary restatement index, considering the date of March 23^rd, 2026, to identify the shareholders entitled to receive such amounts.

Rio de Janeiro, March 18^th, 2026.

WALMIR URBANO KESSELI Chairman of the Fiscal Council Elias de Matos Brito Member of the Fiscal Council

HELOISA BELOTTI BEDICKS

Member of the Fiscal Council

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 19, 2026		By:	/s/ Alberto Mario Griselli
			Alberto Mario Griselli
			Chief Executive Officer, Chief Financial Officer and Investor Relations Officer

FAQ

What distribution did TIMB’s TIM S.A. announce in this 6-K filing?

TIM S.A. proposed distributing interest on shareholders’ equity totaling R$390,000,000.00. The amount corresponds to a gross payment of R$0.1632708888 per share, subject to approval by the Board of Directors, as supported by the company’s Fiscal Council.

What is the per-share amount of TIM S.A.’s interest on equity for TIMB investors?

The proposed interest on equity is R$0.1632708888 per share, on a gross basis. This figure comes from TIM S.A.’s plan to distribute R$390,000,000.00 in total, with standard Brazilian income tax withholding applied at payment, unless shareholders qualify for special tax treatment.

When is the record date for TIMB shareholders to receive TIM S.A.’s interest on equity?

TIM S.A. set March 23rd, 2026 as the date to identify shareholders entitled to the interest on equity. Investors holding shares on this date qualify, and shares acquired after then will trade ex-rights, meaning they will not carry entitlement to this specific distribution.

By when will TIMB shareholders receive TIM S.A.’s proposed interest on equity payment?

Payment of TIM S.A.’s interest on shareholders’ equity is scheduled to occur by April 30th, 2026. The company stated that no monetary restatement index will be applied, so the nominal per-share amount remains fixed between the record date and the actual payment date.

What tax treatment applies to TIM S.A.’s interest on equity distribution for TIMB investors?

TIM S.A. indicated that a 17.5% income tax will be withheld at the time of crediting the interest on equity. This withholding does not apply to shareholders who are exempt or subject to differentiated taxation under Brazilian law, following each investor’s specific tax status.

Did TIM S.A.’s Fiscal Council support the proposed interest on equity for TIMB shareholders?

Yes. TIM S.A.’s Fiscal Council reviewed management’s proposal and expressed a favorable opinion on submitting it to the Board of Directors. Their stance was based on information and clarifications provided by management during a joint meeting with the Statutory Audit Committee.