UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

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FORM 6-K
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REPORT OF FOREIGN PRIVATE ISSUER

Pursuant to Rule 13a-16 or 15d-16 under the
Securities Exchange Act of 1934

For the month of April, 2026

Commission File Number: 001-38262

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LOMA NEGRA COMPAÑÍA INDUSTRIAL ARGENTINA SOCIEDAD ANÓNIMA
(Exact Name of Registrant as Specified in its Charter)

LOMA NEGRA CORPORATION
(Translation of Registrant’s name into English)

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Cecilia Grierson 355, 4th Floor Zip Code C1107CPG – Capital Federal Republic of Argentina
(Address of principal executive offices)

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Indicate by check mark whether the registrant files or will file annual reports under cover 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):

This Form 6-K for Loma Negra Compañía Industrial Argentina Sociedad Anónima (or the “Company”) contains:

Exhibit 1: Relevant Event

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.


			Loma Negra Compañía Industrial Argentina Sociedad Anónima


Date: April, 28, 2026	By: /s/	Marcos I. Gradin
	Name:	Marcos I. Gradin
	Title:	Chief Financial Officer

Loma Negra Compania Industrial Argentina Sociedad Anonima 6-K