SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

Report of Foreign Private Issuer
Pursuant to Rule 13a-16 or 15d-16 of the

Securities Exchange Act of 1934

For the month of March, 2026

Commission File Number 1565025

AMBEV S.A.

(Exact name of registrant as specified in its charter)

AMBEV S.A.

(Translation of Registrant's name into English)

Rua Dr. Renato Paes de Barros, 1017 - 3rd Floor
04530-000 São Paulo, SP
Federative Republic of Brazil

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F. 

Form 20-F ___X___ Form 40-F _______

 Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.  

Yes _______ No ___X____

AMBEV S.A.

CNPJ [National Corporate Taxpayers Register] No. 07.526.557/0001-00

NIRE [Corporate Registration Identification Number] 35.300.368.941

Call Notice

The shareholders of Ambev S.A. (“Company”) are invited to attend the Annual Ordinary and Extraordinary Meetings (“AGOE” or “Shareholders’ Meetings”) to be held, cumulatively, on April 30, 2026, at 2:00 p.m., in an exclusively digital form through Ten Meetings digital platform (“Digital Platform”), to be considered held, for the purposes of article 5, § 2, item I, § 3, and article 28, §§ 2 and 3, of Brazilian Securities Commission (“CVM”) Resolution No. 81, of March 29, 2022, as amended (“CVM Resolution 81/22”), at its headquarters, to resolve on the following agenda:

General Information:

After receiving the documents through the Digital Platform and confirming their validity and completeness of the Registration, the Company will accredit the shareholder (or their representatives, as the case may be) to participate in the AGOE via Digital Platform. Only duly accredited shareholders may participate in the AGOE, in accordance with the term and procedures indicated above.

Shareholders who choose to vote by means of a bulletin for distance vote, shall send it, under the terms of CVM Resolution 81/22: 1) Banco Bradesco S.A., as the bookkeeper of the shares issued by the Company; 2) to their custody agents who provide this service, in the case of shareholders holding shares deposited in a central depository; 3) to the central depositary in which the shares are deposited, directly through the electronic system made available by B3, in the “Investor Area” (”Área do Investidor”) (available at https://investidor.b3.com.br), under the “Services” (“Serviços”) section, by clicking on “Open Meetings” (“Assembleia em Aberto”); or 4) directly to the Company. For additional information, the shareholder shall observe the rules set forth in article 27 of CVM Resolution 81/22 and the procedures described in the Manual.

Participation at the AGOE will be restricted to the shareholders, their representatives or attorneys-in-fact, as the case may be, who are accredited under the terms described in item 4 of this Notice and according to the instructions contained in the Manual, and who join the Shareholders’ Meetings, through the Digital Platform, until 1:59 p.m. on April 30, 2026.

All the timings provided herein shall be read as Brasilia time.

São Paulo, March 30, 2026.

Michel Dimitrios Doukeris

Chairman of the Board of Directors

SIGNATURE

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.

Date: March 27, 2026