6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of October, 2024.

Commission File Number 001-38755

Suzano S.A. (Exact name of registrant as specified in its charter)

SUZANO INC. (Translation of Registrant’s Name into English)

Av. Professor Magalhaes Neto, 1,752 10th Floor, Rooms 1010 and 1011 Salvador, Brazil 41 810-012 (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): ☐

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): ☐

Enclosures:

Exhibit 99.1 – Nomination of New CFO

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: October 25th, 2024

Document

SUZANO S.A.

Publicly Held Company

Corporate Taxpayer ID (CNPJ/MF) No. 16.404.287/0001-55

Company Registry (NIRE) 29.3.0001633-1

NOTICE TO THE MARKET

São Paulo, October 25th, 2024 – Suzano S.A. (“Company” or “Suzano”) (B3: SUZB3 / NYSE: SUZ), in line with best corporate governance practices, informs its shareholders and the market in general that, as of today, it has received notification of the resignation of the current Executive Vice President of Finance and Investor Relations, Mr. Marcelo Feriozzi Bacci, effective as of November 30th, 2024.

Following Mr. Marcelo’s departure, the Company’s Board of Directors has approved the appointment of the current Director of Financial Planning and M&A, Mr. Marcos Moreno Chagas Assumpção, to the position of Executive Vice President of Finance and Investor Relations.

Mr. Marcos Moreno Chagas Assumpção has a 25-year career and currently serves as Finance Director at Suzano, reporting to Mr. Marcelo. Mr. Marcos has been with Suzano since January 2022, during which time he has led the Treasury, Fundraising, M&A, Credit, and, more recently, Financial Planning and M&A departments. Prior to Suzano, he worked for 17 years in Equity Research at Itaú BBA and Bank of America - Merrill Lynch, covering the pulp and paper sector since 2004, as well as other sectors such as steel, mining, and cement.

The members of the Board of Directors express their deep admiration and gratitude for Mr. Marcelo’s service to the Company over his more than 10 years as CFO at Suzano. They emphasize Mr. Marcelo’s fundamental role and leadership in the Company’s growth, consistently ensuring and safeguarding the Company’s financial and capital discipline. Mr. Marcelo has played a key role in establishing the Company’s financial strength and its current leverage level, even following such a significant investment cycle as the present one.

São Paulo, October 25th, 2024.

Marcelo Feriozzi Bacci

Chief Financial and Investor Relations Officer

João Alberto Fernandez de Abreu

Chief Executive Officer