SEC FORM 3

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SEC Form 3

FORM 3

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

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Amchite Lucas Ariel

(Last)

(First)

(Middle)

CECILIA GRIERSON 355, 4TH FLOOR

(Street)

BUENOS AIRES

C1107CPG

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
03/18/2026

3. Issuer Name and Ticker or Trading Symbol
Loma Negra Compania Industrial Argentina Sociedad Anonima [ LOMA ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	Director of Operations

5. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Loma Negra ADS⁽¹⁾	800	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
Performance Stock Units	⁽²⁾	⁽²⁾	Ordinary Shares	17,191	⁽²⁾	D
Restricted Stock Units	⁽³⁾	⁽³⁾	Ordinary Shares	17,191	⁽³⁾	D

Explanation of Responses:

1. Each American depositary share (ADS) represents five (5) ordinary shares of Loma Negra C.I.A.S.A. (the Company).

2. Each performance stock unit represents a contingent right to receive the economic equivalent of one ordinary share of Loma Negra C.I.A.S.A.(the Company). The Reporting Person was awarded performance stock units under the Company s Stock Compensation Plan Subject to Total Shareholder Return (TSR). The performance stock units may, at the Company s discretion, be settled in ordinary shares, American depositary shares (each representing five (5) ordinary shares) (ADSs) or the equivalent value in cash. The number of ordinary shares, ADSs (or equivalent value in cash) to be delivered upon vesting will be determined by reference to the Company s TSR over a three-year period following the award date (including the year the award was made) and calculated in accordance with the plan. The performance stock units will vest following the end of the three-year performance period, subject to the Reporting Person continued employment with the Company through such vesting date.

3. Each restricted stock unit represents a contingent right to receive the economic equivalent of one ordinary share of the Company. The Reporting Person was awarded restricted stock units under the Company s Stock Compensation Plan. The restricted stock units may, at discretion of the Company, be settled in ordinary shares, ADSs or the equivalent value in cash. The restricted stock units vest in substantially equal installments on January 1 of each of the three years following the award date, subject to the Reporting Person continued employment with the Company through each such vesting date, commencing on January 1, 2027.

Remarks:

	Lucas Ariel Amchite	03/18/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.