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|                                                  |                                            |
|-------------------------------------------------------|-------------------------------------------------|
| LOMA NEGRA CORPORATION                                | Republic of Argentina                           |
| (Translation of Registrant’s name into English) | (Jurisdiction of incorporation or organization) |
|                                                                                    |   |                                      |
|-----------------------------------------------------------------------------------------|--------|-------------------------------------------|
| Title of each class                                                                     |   | Name of each exchange on which registered |
|                                                                                    |   |                                      |
| American Depositary Shares, each representing 5 OrdinaryShares of Loma Negra C.I.A.S.A. |   |  New York Stock Exchange             |
|                                                                                    |   |                                      |
| Ordinary Shares of Loma Negra C.I.A.S.A.                                                |   | New York Stock Exchange*                  |

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| U.S. GAAP ☐ | International Financial Reporting Standards as issued by the InternationalAccounting Standards Board  ☒ |  Other  ☐ |
|-------------------|------------------------------------------------------------------------------------------------------------------------------|---------------------------|

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|                                                                                         | EXPLANATORY NOTE                              | 1      |
|----------------------------------------------------------------------------------------------|-----------------------------------------------|--------|
|                                                                                         | ITEM 15.   CONTROLS AND PROCEDURES  | 2      |
|                                                                                         |                                          |   |
|  Disclosure Controls and Procedures                                                     | 2                                             |
|                                                                                         |                                          |   |
|  Management’s annual report on internal control over financial reporting          | 2                                             |
|                                                                                         |                                          |   |
| Attestation report of the registered public accounting firm                                  | 2                                             |
|                                                                                         |                                          |   |
| Changes in Internal Control over Financial Reporting During the Year Ended December 31, 2018 | 2                                             |
|                                                                                         | ITEM 19.   EXHIBITS                 | 2      |
|                                                                                         | SIGNATURES                                    | 4      |
|                                                                                         | Exhibit 12.1                                  | 5      |
|                                                                                         | Exhibit 12.2                                  | 6      |

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|          |   |                                                                                                                  |
|---------------|--------|-----------------------------------------------------------------------------------------------------------------------|
| ExhibitNumber |   | Description of Document                                                                                               |
|          |   |
| 12.1          |   | Certification of the Chief Executive Officer                pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 |
| 12.2          |   | Certification of the Chief Financial Officer                pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 |

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| Date:  September 23, 2019 | Loma Negra C.I.A.S.A.          |
|--------------------------------|--------------------------------|
|                           |                           |
|                           | /s/Sergio D. Faifman           |
|                           | Name: Sergio D. Faifman        |
|                           | Title: Chief Executive Officer |
|   |                           |
|--------|--------------------------------|
|   | /s/Marcos I. Gradin            |
|   | Name: Marcos I. Gradin         |
|   | Title: Chief Financial Officer |