TIM S.A. (TIMB) reports 1.61B shares held by controlling group in related-party update

Rhea-AI Filing Summary

TIM S.A. provides a consolidated report on securities positions and related-party information for various governance bodies, prepared in line with Brazilian CVM Resolution 44/21. The report covers the board of directors, executive management, fiscal council, technical or advisory bodies, the controlling shareholder and people connected to management.

For certain board or management members, the report lists holdings of Common Registered shares, including quantities such as 296,359 and 58,453 shares, each tied to small ownership percentages such as 0.012389% and 0.002444%. It also discloses a large consolidated position of 1,611,969,909 Common Registered shares associated with the controlling shareholder group, corresponding to 67.386500% of the same class. Several sections show zero balances and “N/A” entries for deal price, volume in R$, and intermediary quantity, indicating that the focus is on closing balances and related-party ownership levels rather than detailed trade activity for the period.

Key Figures

Controlling group stake: 1,611,969,909 Common Registered shares Controlling group ownership: 67.386500% Board/management holding A: 296,359 Common Registered shares +3 more

6 metrics

Controlling group stake 1,611,969,909 Common Registered shares Consolidated position associated with controlling shareholder group

Controlling group ownership 67.386500% Percentage of same Common Registered share class

Board/management holding A 296,359 Common Registered shares Closing balance for a reported governance position

Ownership percentage A 0.012389% Same type/class total shares for a reported position

Board/management holding B 58,453 Common Registered shares Opening and closing balance for another reported position

Ownership percentage B 0.002444% Same type/class total shares for another reported position

Key Terms

Related Party Transactions, CVM resolution 44/21, Controlling Shareholder, Common Registered

4 terms

Related Party Transactions financial

"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.

CVM resolution 44/21 regulatory

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

Controlling Shareholder financial

"Technical or Advisory Bodies (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.

Common Registered financial

"Security Description Quantity Common Registered 1.611.969.909"

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

Available on EDGAR 08/10/2026 - 05:18 PM Accepted by SEC EDGAR 08/10/2026 - 05:18 PM Learn about SEC filing dates

FAQ

What does TIMB’s August 2026 Form 6-K primarily disclose?

It discloses consolidated shareholdings and related-party information for TIM S.A.’s governance bodies, under CVM Resolution 44/21, focusing on Common Registered shares and closing ownership percentages for the period.

How many TIMB Common Registered shares are tied to the controlling shareholder group?

The report lists 1,611,969,909 Common Registered shares associated with the controlling shareholder group, corresponding to an ownership level of 67.386500% of that share class, as part of the consolidated related-party information.

What ownership percentages are reported for TIMB board or management positions?

Certain board or management positions show small stakes, including 0.012389% and 0.002444% of Common Registered shares, with corresponding quantities such as 296,359 and 58,453 shares reported as closing balances.

Does the TIMB Form 6-K detail trading prices or volumes for the period?

Several sections show deal price and volume in R$ as N/A, and intermediary quantity as 0, so the report emphasizes closing balances and ownership percentages rather than specific transaction prices or trade volumes.

Which TIMB corporate bodies are covered in this related-party consolidation?

The consolidation covers TIM S.A., including its board of directors, executive management, fiscal council, technical or advisory bodies, the controlling shareholder, and people connected to the management.

What share class is referenced throughout TIMB’s August 2026 report?

All reported positions relate to the Common Registered share class of TIM S.A., with quantities and associated percentage interests disclosed for different related parties and corporate bodies.

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: August 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$) N/A Security / Derivative Same Type / Class Total Shares 0,012389% 0,012389% Group and Related Parties Security / Derivative Same Type / Class Total Shares 0,002444% 0,002444% Security / Derivative Security Description Deal Price Volume (R$) Shares Common Registered Compensation Plan Security / Derivative Same Type / Class Total Shares 0,002444% 0,002444% 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% 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 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 Closing Balance % Share Opening Balance Security Description Quantity Common Registered 58.453 Activity in the month N/A Security Description Quantity Common Registered 58.453 Company Name: TIM S.A. ( ) Board of Directors ( ) Executive Management (X) Fiscal Council ( ) Technical or Advisory Bodies ( ) Controlling Shareholder 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 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 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 % 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 ( ) 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 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 #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: August 10, 2026		By:	/s/ Alberto Mario Griselli
			Alberto Mario Griselli
			Chief Executive Officer