Minutes of Board of Directors Meeting

KLABIN S.A.

CNPJ/ME No. 89.637.490/0001-45

NIRE No. 35300188349

EXTRACT OF THE MINUTES OF THE BOARD OF DIRECTORS' MEETING

HELD ON OCTOBER 26, 2021

1. Date, time and place: On the 26th (twenty-sixth) of October 2021, at 10:00 a.m. (ten a.m.), the Board of Directors of Klabin S.A. ("Company") met via

teleconference, with address at Avenida Brigadeiro Faria Lima, no. 3.600, 5th floor, in the city of São Paulo, State of São Paulo.

1. Call Notice: The Directors were previously called pursuant to Article 18 of
   the Bylaws.
2. Attendance: All members of the Board of Directors met via teleconference.
3. Presiding Board: Chairman of the Board - Wolff Klabin; Secretary - Fábio Fernandes Medeiros.
4. Agenda: To deliberate on the proposal of the Administration about the distribution of interim dividends and interest on own capital, which will be imputed to the mandatory dividends for the current fiscal year, and shall be deducted from the amount declared by the Ordinary General Meeting to take place in 2022.
5. Matters and deliberations taken: After analyzing the matters on the agenda, the Members of the Board approved, by unanimity of votes and without any reservations, the proposal of the Administration, in view of the results obtained, for the distribution of (I) interim dividends in the total amount of BRL 300,000,000.00 (three hundred million Brazilian reais), of which BRL 0.05462280763 per Share to shareholders holding common shares and preferred shares and BRL 0.27311403815 per Units; and (II) Interest on Own Capital in the total gross amount of BRL 102,000,000.00 (one hundred and two million Brazilian reais), of which BRL 0.01857175459 per Share to shareholders holding common shares and preferred shares and BRL 0.09285877295 per Units, withholding 15% (fifteen percent) as Income Tax Withheld at the Source, except for shareholders who are provenly immune or exempt (for which there is no withholding) or for shareholders domiciled in countries or

jurisdictions for which the legislation establishes a different rate, pursuant to the legislation in force on interest on own capital. Dividends and interest on own capital are declared as part of the interim results for the fiscal year 2021, in compliance with the terms of Article 20 of the Company's Bylaws, with basis on the balance sheet of September 30, 2021 to be charged to the mandatory dividend of the current fiscal year, and shall be deducted from the amount declared by the Ordinary General Meeting to be held in 2022, pursuant to statutory and legal provisions. The payment of dividends and interest on own capital declared herein will be made on November 11, 2021 with basis on the shareholding position of October 29, 2021, and the shares will turn to be traded ex-dividends and ex-intereston own capital as from November 1, 2021. It is further consigned that the amounts to be subsequently allocated to the constitution and recomposition of the tax incentive reserve were not distributed and are reserved for this purpose.

7. Closure: There being no further items to discuss, the meeting was adjourned and the present minutes drawn up, which, after being read and approved, were signed by the attending Members of the Board and by the Secretary.

São Paulo, October 26, 2021.

Wolff Klabin- President, Fábio Fernandes Medeiros - Secretary, Daniel Miguel Klabin, Horacio Lafer Piva, Roberto Klabin Martins Xavier, Alberto Klabin, Francisco Lafer Pati, Celso Lafer, Paulo Sergio Coutinho Galvão Filho, Roberto Luiz Leme Klabin, Camilo Marcantonio Junior, Sérgio Francisco Monteiro de Carvalho Guimarães, Vera Lafer and Mauro Rodrigues da Cunha.

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I do certify that the above extract is an authentic copy of the minutes of the Board of Directors' Meeting held on October 26, 2021, at 10:00 a.m., drawn up in the proper book.

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Fábio Fernandes Medeiros

Secretary