TIM S.A. (NYSE: TIMB) 6-K outlines controlling shareholder and board stakes

Rhea-AI Filing Summary

TIM S.A., a foreign private issuer, filed a Form 6-K presenting a consolidated overview of securities positions and related-party information, aligned with Brazilian CVM Resolution 44/21. The filing lists holdings by the controlling shareholder, board, fiscal council and persons connected to management.

The consolidated form shows a controlling shareholder group with 67.386500% of common shares of the same type and class. TIM S.A. is shown with 1,611,969,909 common registered shares. Board members are reported with holdings of 296,359 common shares and the fiscal council with 93,453 common shares, while several governance categories report no holdings or activity in the month.

Key Figures

Controlling shareholder stake: 67.386500% Common registered shares: 1,611,969,909 shares Board holdings: 296,359 shares +3 more

6 metrics

Controlling shareholder stake 67.386500% Common shares of the same type and class

Common registered shares 1,611,969,909 shares Common registered shares of TIM S.A.

Board holdings 296,359 shares Common registered shares held by Board of Directors

Fiscal council holdings 93,453 shares Common registered shares held by Fiscal Council

Reported stake 1 0.012389% Same type/class total shares for a related-party group

Reported stake 2 0.003907% Same type/class total shares for a related-party group

Key Terms

Related Party Transactions, foreign private issuer, CVM resolution 44/21, controlling shareholder, +1 more

5 terms

Related Party Transactions financial

"TIM S.A. CONSOLIDATED FORM Director and Related Party Transactions Group and Related Parties"

Transactions between a company and people or entities that have close ties to it—such as executives, board members, major shareholders, family members, or related companies—where the parties are not independent. These deals matter to investors because they can create conflicts of interest or hide favorable terms that distort a company’s true profits and risks; think of it like a business buying or selling to a family member instead of using the open market, which can lead to biased prices or undisclosed obligations.

foreign private issuer regulatory

"FORM 6-K 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.

CVM resolution 44/21 regulatory

"There were the following securities and derivatives operations, in accordance with CVM resolution 44/21"

controlling shareholder financial

"(X) Controlling Shareholder ( ) People connected to the management"

A controlling shareholder is a person or entity that holds enough voting power in a company—often a majority of votes or decisive influence through agreements—to determine its board, strategy and major decisions. For investors this matters because that control shapes corporate direction, risk and who benefits from deals; like a driver steering a car, a controlling shareholder can speed up or block changes, which can affect minority shareholders’ returns and the company’s value.

Form 6-K regulatory

"FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16"

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.

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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 10, 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. CONSOLIDATED FORM Director and Related Party Transactions Group and Related Parties Security / Derivative Same Type / Class Total Shares 0,012389% 0,012389% Security / Derivative Security Description Deal Price Volume (R$) N/A Security / Derivative Same Type / Class Total Shares 0,012389% 0,012389% Group and Related Parties Security / Derivative Same Type / Class Total Shares 0,003907% 0,003907% Security / Derivative Security Description Deal Price Volume (R$) Shares Common Registered Compensation Plan Security / Derivative Same Type / Class Total Shares 0,003907% 0,003907% 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 67,386500% 67,386500% Security / Derivative Security Description Deal Price Volume (R$) N/A - Security / Derivative Same Type / Class Total Shares 67,386500% 67,386500% Group and Related Parties Security / Derivative Same Type / Class Total Shares 0,000000% 0,000000% Security / Derivative Security Description Deal Price Volume (R$) 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 93.453 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 93.453 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 296.359 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 296.359 #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: June 10, 2026		By:	/s/ Alberto Mario Griselli
			Alberto Mario Griselli
			Chief Executive Officer

FAQ

What does TIMB’s latest Form 6-K primarily disclose?

The Form 6-K from TIM S.A. (TIMB) primarily discloses consolidated information on securities holdings and related-party positions. It details ownership percentages and share quantities for the controlling shareholder, board, fiscal council, and connected parties under CVM Resolution 44/21.

What is the controlling shareholder’s stake in TIMB according to the 6-K?

The controlling shareholder group is reported with 67.386500% of common shares of the same type and class. This percentage reflects a majority position and is presented as part of the company’s consolidated director and related-party securities information.

How many common registered shares of TIMB are shown in the filing?

The filing shows 1,611,969,909 common registered shares for TIM S.A. in the consolidated form. This figure is used as the reference quantity when presenting percentage stakes and positions of the controlling shareholder, board members, and other related parties.

What holdings do TIMB’s board members report in this 6-K?

Board members are reported with 296,359 common registered shares in TIM S.A. The filing presents this as both the opening and closing balance for the period, with no activity in the month indicated for these board holdings.

What holdings does TIMB’s fiscal council report in the document?

The fiscal council is reported with 93,453 common registered shares. The filing shows this quantity as both the opening and closing balance, and notes no intermediary transactions, indicating no reported activity in the month for these positions.

Are there many zero-balance categories in TIMB’s Form 6-K table?

Yes. Several governance and related-party categories in the consolidated form show 0 common registered shares and no activity in the month. These zero balances indicate that some boards, management groups, or connected persons do not hold reportable positions.