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 Of

The Securities Exchange Act Of 1934

For the month of December 2025

Commission File Number: 001-14950

ULTRAPAR HOLDINGS INC.

(Translation of Registrant’s Name into English)

Brigadeiro Luis Antonio Avenue, 1343, 9th Floor

São Paulo, SP, Brazil 01317-910

(Address of Principal Executive Offices)

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 ____X____ 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 ____X____

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 ____X____

ULTRAPAR HOLDINGS INC.

TABLE OF CONTENTS

ITEM

1. Notice to shareholders

 

ULTRAPAR PARTICIPAÇÕES S.A.

Distribution of dividends

São Paulo, December 1, 2025 – Ultrapar Participações S.A. informs that the Board of Directors, at the meeting held today, approved the distribution of dividends in the amount of R$ 1,087,307,868.00, equivalent to R$ 1.00 per common share, to be paid from December 16, 2025, onwards, without remuneration or monetary adjustment.

The record date that establishes the right to receive the dividend will be December 05, 2025, in Brazil, and December 12, 2025, in the United States. Therefore, the shares will be traded "ex-dividend" from December 8, 2025, onwards on the São Paulo Stock Exchange (B3), and from December 12, 2025, onwards on the New York Stock Exchange (NYSE).

Alexandre Mendes Palhares

Chief Financial and Investor Relations Officer

Ultrapar Participações S.A.

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.

Date: December 1, 2025                                          

ULTRAPAR HOLDINGS INC.
By:	/s/ Alexandre Mendes Palhares
Name:	Alexandre Mendes Palhares
Title:	Chief Financial and Investor Relations Officer

(Notice to Shareholders)