# EDGAR Filing Document

**Accession Number:** 0001711375
**File Stem:** 0001975211-26-000004
**Filing Date:** 2026-3
**Character Count:** 6633
**Document Hash:** 56a3262eda36bc80a335a3e96720e204
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001975211-26-000004.hdr.sgml**: 20260415

**ACCESSION NUMBER**: 0001975211-26-000004

**CONFORMED SUBMISSION TYPE**: 3

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260318

**FILED AS OF DATE**: 20260318

**DATE AS OF CHANGE**: 20260318

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Gradin Marcos Isabelino
- **CENTRAL INDEX KEY:** 0001975211

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-38262
- **FILM NUMBER:** 26766400

**MAIL ADDRESS:**
- **STREET 1:** LOMA NEGRA
- **STREET 2:** CECILIA GRIERSON 355, 4TH FLOOR
- **CITY:** BUENOS AIRES
- **STATE:** C1
- **ZIP:** 00000
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Loma Negra Compania Industrial Argentina Sociedad Anonima
- **CENTRAL INDEX KEY:** 0001711375
- **STANDARD INDUSTRIAL CLASSIFICATION:** CEMENT, HYDRAULIC [3241]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 000000000

**BUSINESS ADDRESS:**
- **STREET 1:** CECILIA GRIERSON 355, 4TH FLOOR
- **CITY:** BUENOS AIRES
- **STATE:** C1
- **ZIP:** C1107CPG
- **BUSINESS PHONE:** 54 114-319-3000

**MAIL ADDRESS:**
- **STREET 1:** CECILIA GRIERSON 355, 4TH FLOOR
- **CITY:** BUENOS AIRES
- **STATE:** C1
- **ZIP:** C1107CPG

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

## FORM 3

### INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Gradin Marcos Isabelino<br><sub>(Last) (First) (Middle)</sub><br>Cecilia Grierson 355, 4th floor<br><sub>(Street)</sub><br>Buenos Aires,  C1107CPG<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>Loma Negra Compania Industrial Argentina Sociedad Anonima [ LOMA ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2026-03-18 | **4. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director   [ ] 10% Owner<br>[X] Officer (give title below)   [ ] Other (specify below)<br>_Chief Financial Officer_ | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities Beneficially Owned

---

|  |  |  |  |
| --- | --- | --- | --- |
| 1. Title of Security | 2. Amount of Securities Beneficially Owned | 3. Ownership Form | 4. Nature of Indirect Beneficial Ownership |

---

## Table II - Derivative Securities Beneficially Owned

---

|  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 3. Title and Amount of Underlying Securities | 3. Title and Amount of Underlying Securities | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| Performance Stock Units | <sup>(1)</sup> | <sup>(1)</sup> | Ordinary Shares | 74607 | <sup>(1)</sup> | D |  |
| Restricted Stock Units | <sup>(2)</sup> | <sup>(2)</sup> | Ordinary Shares | 50956 | <sup>(2)</sup> | D |  |
| Phantom Stock Options | <sup>(3)</sup> | 2027-11-01 | Ordinary Shares | 55366 | $3.80 | D |  |

---

### Footnotes:

(1) 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.

(2) 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.

(3) Each phantom stock option represents a contingent right to receive a cash payment equal to the excess in value of one ADS above a grant price of US$19.00 per ADS (equivalent to US$3.80 per ordinary share). The Reporting Person was granted phantom stock options under the Company s 2017 Phantom Stock Option Program. The phantom stock options are fully vested and are exercisable quarterly in accordance with the plan, subject to the Reporting Person s continued employment with the Company through the applicable exercise date.

**Signature:** Marcos Isabelino Gradin  
**Date:** 2026-03-18

### Remarks:

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 4 (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.**