TIM S.A. (NYSE: TIMB) reports management and related-party shareholdings

Rhea-AI Filing Summary

TIM S.A. filed a Form 6-K as a foreign private issuer reporting information on shareholdings and securities positions of its management, controlling shareholder and related parties, based on a consolidated form prepared under Brazilian rules.

The disclosure lists holdings of common registered shares by different groups, including the controlling shareholder and members of the board of directors, executive management and fiscal council, as well as people connected to management. For example, the consolidated form shows common registered share positions such as 1,611,969,909 shares for TIM S.A. in one category and smaller amounts like 517,217 and 285,321 shares associated with governance bodies.

The report also notes that there were securities and derivatives operations carried out in accordance with CVM Resolution 44/21, indicating activity during the period, while presenting opening and closing balances and corresponding percentage interests for each group.

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: December 9, 2025

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. CONSOLIDATED FORM Director and Related Party Transactions Group and Related Parties Security / Derivative Same Type / Class Total Shares 0,021366% 0,021366% Security / Derivative Security Description Deal Price Volume (R$) N/A Security / Derivative Same Type / Class Total Shares 0,021366% 0,021366% Group and Related Parties Security / Derivative Same Type / Class Total Shares 0,011786% 0,011786% Security / Derivative Security Description Deal Price Volume (R$) Shares Common Registered Compensation Plan Security / Derivative Same Type / Class Total Shares 0,011786% 0,011786% Group and Related Parties Security / Derivative Same Type / Class Total Shares 0,000000% 0,000000% Security / Derivative Security Description Deal Price Volume (R$) N/A - Security / Derivative Same Type / Class Total Shares 0,000000% 0,000000% Group and Related Parties Security / Derivative Same Type / Class Total Shares 0,000000% 0,000000% Security / Derivative Security Description Deal Price Volume (R$) N/A - Security / Derivative Same Type / Class Total Shares 0,000000% 0,000000% Group and Related Parties Security / Derivative Same Type / Class Total Shares 66,588193% 66,588193% Security / Derivative Security Description Deal Price Volume (R$) N/A - Security / Derivative Same Type / Class Total Shares 66,588193% 66,588193% Group and Related Parties Security / Derivative Same Type / Class Total Shares 0,000000% 0,000000% Security / Derivative Security Description Deal Price Volume (R$) N/A - Security / Derivative Same Type / Class Total Shares 0,000000% 0,000000% TIM S S.A. CONSOLIDATED FORM Common Registered 0 Activity in the month Intermediary Quantity N/A N/A Closing Balance % Share Security Description Quantity 0 Opening Balance % Share Security Description Quantity Common Registered 0 % Share Opening Balance ( ) Board of Directors ( ) Executive Management ( ) Fiscal Council ( ) Technical or Advisory Bodies ( ) Controlling Shareholder (X) People connected to the management Security Description Quantity Common Registered 1.611.969.909 Company Name: TIM S.A. Activity in the month Intermediary Quantity N/A 0 N/A % Share Security Description Quantity* Common Registered 1.611.969.909 Closing Balance Company Name: TIM S.A. ( ) Board of Directors ( ) Executive Management ( ) Fiscal Council ( ) Technical or Advisory Bodies (X) Controlling Shareholder ( ) People connected to the management Closing Balance % Share Security Description Quantity Common Registered 0 Opening Balance % Share Security Description Quantity Common Registered 0 Activity in the month Intermediary Quantity N/A 0 N/A Company Name: TIM S.A. ( ) Board of Directors ( ) Executive Management ( ) Fiscal Council (X) Technical or Advisory Bodies ( ) Controlling Shareholder ( ) People connected to the management Closing Balance % Share Security Description Quantity Common Registered 0 0 N/A ( ) People connected to the management Opening Balance % Share Security Description Quantity Common Registered 0 Activity in the month Intermediary Quantity N/A Security Description Quantity Common Registered 285.321 Company Name: TIM S.A. ( ) Board of Directors ( ) Executive Management (X) Fiscal Council ( ) Technical or Advisory Bodies ( ) Controlling Shareholder Closing Balance % Share Opening Balance Security Description Quantity Common Registered 285.321 Activity in the month N/A There were the following securities and derivatives operations, in accordance with CVM resolution 44/21 . Company Name: TIM S.A. (X) Board of Directors ( ) Executive Management ( ) Fiscal Council ( ) Technical or Advisory Bodies ( ) Controlling Shareholder ( ) People connected to the management Activity in the month Opening Balance % Share Security Description Quantity Common Registered 517.217 Intermediary Quantity N/A 0 N/A Intermediary Quantity N/A 0 Company Name: TIM S.A. ( ) Board of Directors (X) Executive Management ( ) Fiscal Council ( ) Technical or Advisory Bodies ( ) Controlling Shareholder ( ) People connected to the management Closing Balance % Share Security Description Quantity Common Registered 517.217 #Classificado como Uso Interno

 

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: December 9, 2025		By:	/s/ Alberto Mario Griselli
			Alberto Mario Griselli
			Chief Executive Officer, Chief Financial Officer and Investor Relations Officer

FAQ

What does TIMB's latest Form 6-K disclose about TIM S.A.?

The Form 6-K discloses a consolidated overview of shareholdings and securities positions of TIM S.A.’s management, controlling shareholder and related parties, including opening and closing balances.

Which types of securities are detailed in TIMB TIM S.A.'s Form 6-K?

The report focuses on common registered shares and references certain securities and derivatives operations conducted in line with CVM Resolution 44/21.

Which groups within TIM S.A. are covered by the consolidated shareholding data?

The data covers categories such as the board of directors, executive management, fiscal council, technical or advisory bodies, the controlling shareholder, and people connected to the management.

Does the TIMB Form 6-K mention a controlling shareholder position in TIM S.A.?

Yes. The consolidated form shows a large position in common registered shares under the controlling shareholder category, including a quantity of 1,611,969,909 shares in one of the tables.

Are there indications of trading activity by insiders in TIMB TIM S.A.'s disclosure?

The document states that there were securities and derivatives operations in accordance with CVM Resolution 44/21, indicating activity in the period alongside reported opening and closing balances.

Who signed the TIMB TIM S.A. Form 6-K?

The report was signed on behalf of TIM S.A. by Alberto Mario Griselli, who serves as Chief Executive Officer, Chief Financial Officer and Investor Relations Officer.

Does the Form 6-K relate to earnings or major transactions for TIMB?

No, this Form 6-K is focused on director, related party and controlling shareholder shareholdings and securities activity, rather than earnings or major corporate transactions.