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 April 2026

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.	Market announcement

Graphics

ULTRAPAR PARTICIPAÇÕES S.A.

MARKET ANNOUNCEMENT

2025 Form 20-F filing

São Paulo, April 28, 2026 – Ultrapar Participações S.A. (B3: UGPA3 / NYSE: UGP, “Company”) informs that the 2025 Form 20-F annual report was filed today with the U.S. Securities and Exchange Commission (SEC).

Such document is available for download at the Company’s website (ri.ultra.com.br), and a hard copy of the complete audited financial statements can be obtained, free of charge, upon request by email ([email protected]) to the Investor Relations Department.

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: April 28, 2026

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

(Market announcement)

ULTRAPAR HOLDINGS INC 6-K