Klabin S A : Minutes of Board of Directors Meeting

KLABIN S.A.

Tax number (CNPJ) 89.637.490/0001-45

Company Register Identification Number (NIRE) 35300188349

EXTRACT FROM THE MINUTES OF THE ORDINARY MEETING OF THE BOARD OF DIRECTORS

HELD ON APRIL 24, 2024

1. Date, time, and place: On April 24, 2024, at 10:30 a.m., the Board of Directors of Klabin S.A. ("Company") met at the Company's headquarters on Av. Brigadeiro Faria Lima, 3,600, fifth floor, in the city of Sao Paulo, State of Sao Paulo, Brazil.
2. Call: The directors were called in advance, per Article 18 of the Bylaws.
3. Attendance: All the members of the Company's Board of Directors were present, according to the names listed at the end of these minutes.
4. Table: Horácio Lafer Piva - President - and Mariangela Daniele Maruishi Bartz -
   Secretary.
5. Agenda: (i) Election of the Chairman of the Board of Directors; (ii) Election of the members of the Advisory Committees; (iii) Election of the Board of Executive Officers; (iv) Distribution of interim dividends for Q12024.
6. Matters discussed and resolutions taken: Initiating the deliberations, the drafting of these minutes in summary form was unanimously approved, pursuant to article 130, paragraph 1 of the Brazilian Corporation Law.

1. Election of the Chairman of the Board of Directors: After discussing the matter on the agenda, the directors decided to elect, by unanimity, with a term of office until the 2025

Annual General Meeting, director Horácio Lafer Piva as Chairman of the Board of Directors of the Company, per Article 17, paragraph 1 of the Bylaws.

1. Election of the members of the Advisory Committees: All the directors, except Mauro Gentile Rodrigues da Cunha, who abstained, resolved to elect the following members of the Advisory Committees to the Board of Directors, with a term of office coinciding with that of the Company's Board of Directors, per Article 2 of the respective Internal Regulations of the Committees: for the Personnel Committee, Amanda Klabin Tkacz, Francisco Amaury Olsen and Marcelo Bertini de Rezende Barbosa were elected. For the Sustainability Committee, Maria Eugênia Lafer Galvão, Paulo Roberto Petterle, and Roberto Luiz Leme Klabin were elected. For the Audit and Related Parties Committee, Amaury Guilherme Bier, João Adamo Junior, and Luis Eduardo Pereira de Carvalho were elected.
2. Election of the Statutory Board: After discussing the matters on the agenda, the directors decided to elect, by unanimity, per Article 22 of the Bylaws, to the Company's Statutory Board, with a term of office until the meeting of the Board of Directors following the
   2025 Annual General Meeting:

• Cristiano Cardoso Teixeira, Brazilian, divorced, administrator, bearer of identity

card (RG) number 16.771.543-4 (SSP/SP) and registered tax number (CPF/MF) 128.996.528-50, resident and domiciled in the city of São Paulo, State of São Paulo, with a business address at Avenida Brigadeiro Faria Lima, 3,600, 5th floor, Itaim Bibi, for the position of General Director;

• Francisco Cesar Razzolini, Brazilian, married, chemical engineer, bearer of identity card (RG) number 2.221.062-9 SESP/PR and registered tax number (CPF/MF) 581.536.089-91, resident and domiciled in the city of São Paulo, State of São Paulo, with a business address at Avenida Brigadeiro Faria Lima, 3,600, 5th floor, Itaim Bibi, for the position of Director of Industrial Technology, Innovation and Sustainability;
• Marcos Paulo Conde Ivo, Brazilian, married, economist, bearer of identity card (RG) number 28.804.466-6 SESP/SP and registered tax number (CPF/MF) 220.481.088-65, resident and domiciled in the city of São Paulo, State of São Paulo, with a business address at Avenida Brigadeiro Faria Lima, 3,600, 5th floor, Itaim Bibi, for the position of Chief Financial and Investor Relations Officer;
• Douglas Dalmasi, Brazilian, married, administrator, bearer of identity card (RG) number 21.180.394-7 SSP/SP and registered tax number (CPF/MF) 125.039.968-84, resident and domiciled in the city of São Paulo, State of São Paulo, with a business address at Avenida Brigadeiro Faria Lima, 3,600, 5th floor, Itaim Bibi, for the position of Packaging Director;

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• Sandro Fabiano Ávila, Brazilian, married, accountant, bearer of identity card (RG) number 2.704.305 SSP/SC and registered tax number (CPF/MF) 863.900.159-68, resident and domiciled in the city of São Paulo, State of São Paulo, with a business address at Avenida Brigadeiro Faria Lima, 3,600, 5th floor, Itaim Bibi, for the position of Forestry Director; and
• Antônio Alexandre Nicolini, Brazilian, married, administrator, bearer of RG No. 18.613.176-8 SSP/SP and registered tax number (CPF/MF) 153.588.158-56, resident and domiciled in the city of São Paulo, State of São Paulo, with a business address at Avenida Brigadeiro Faria Lima, 3,600, 5th floor, Itaim Bibi, for the position of Pulp Director.

The Executive Officers elected herein shall be vested in their respective positions on the present date, upon signing the term of office, in compliance with Article 149 of the Brazilian Corporation Law.

1. Distribution of interim dividends - Q12024: All the Directors resolved to approve the management proposal, given the results obtained, the distribution of interim dividends for the first quarter of 2024 in the total amount of R$ 330,000,000 (three hundred and thirty million Brazilian reals), which represents R$ 0.05970763088 per common or preferred share, or R$ 0.29853815440 per Unit, except for Mauro Gentile Rodrigues da Cunha, who voted to distribute 15% of adjusted EBITDA, and Isabella Saboya de Albuquerque, who voted not to distribute interim dividends as the company is nearing the upper limits of its leverage established in its Debt Policy. The dividends are declared in compliance with the terms of Article 20, item "l" of the company's Bylaws, based on the interim results, for the first quarter of 2024, to be debited to the Profit Reserve account, and will be imputed to the mandatory dividend of the current fiscal year, and must be deducted from the amount declared by the Annual General Meeting to be held in 2025, per the statute and law. The payment of the dividends declared herein will be made on May 16, 2024, based on the shareholding position on May 3, 2024, and the shares will be traded ex-dividend as of May 6, 2024.

7. Closing: There being nothing further to discuss, the meeting was closed, with the minutes herein drawn up and, having been read and approved, signed by the directors present and the Secretary.

São Paulo, April 24, 2024.

Horácio Lafer Piva - President, Mariangela Daniele Maruishi Bartz - Secretary, Alberto Klabin, Amanda Klabin Tkacz, Amaury Guilherme Bier, Celso Lafer, Francisco Lafer Pati, Isabella Saboya de Albuquerque, João Adamo Junior, Marcelo Mesquita de Siqueira Filho, Mauro Gentile Rodrigues da Cunha, Paulo Sérgio Coutinho Galvão Filho, Roberto Diniz Junqueira Neto, Roberto Luiz Leme Klabin, Vera Lafer, Wolff Klabin.

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I certify that the above text constitutes a faithful extract from the minutes of the Ordinary Meeting of the Board of Directors of April 24, 2024, drawn up in the appropriate book.

Mariangela Daniele Maruishi Bartz

Secretary

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