New Loma Negra (NYSE: LOMA) director files initial Form 3

Rhea-AI Filing Summary

Loma Negra Compania Industrial Argentina Sociedad Anonima director Diego Dayenoff has filed an initial Form 3 as a reporting person for the company. The provided data show no reported purchases, sales, or other insider transactions, indicating this filing is an initial ownership disclosure rather than a trade report.

Key Figures

Reported buy transactions: 0 shares Reported sell transactions: 0 shares

2 metrics

Reported buy transactions 0 shares Form 3 transactionSummary buyShares

Reported sell transactions 0 shares Form 3 transactionSummary sellShares

Key Terms

Form 3, reportingPersons, transactionSummary

3 terms

Form 3 regulatory

"INSIDER FILING DATA (Form 3):"

Form 3 is the initial public filing that officers, directors and large shareholders must submit to report their ownership of a company’s securities when they become insiders. It acts like an opening inventory sheet that gives investors a starting point to see who holds significant stakes and to spot later trades or potential conflicts of interest, helping assess insider confidence and transparency.

reportingPersons regulatory

""reportingPersons": [ { "name": "Dayenoff Diego" } ]"

transactionSummary financial

""transactionSummary": { "buyCount": 0, "sellCount": 0 }"

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Accepted by SEC EDGAR 04/16/2026 - 05:35 PM Learn about SEC filing dates

FAQ

What does Diego Dayenoff’s Form 3 mean for LOMA investors?

The Form 3 shows Diego Dayenoff is a reporting person and director of Loma Negra. It is an initial ownership disclosure and, based on the provided data, does not report any insider purchases or sales of LOMA shares.

Does the LOMA Form 3 for Diego Dayenoff report any stock trades?

No, the Form 3 data provided report no insider transactions. Transaction counts for purchases, sales, exercises, gifts, and tax withholdings are all zero, indicating the filing is purely an initial status disclosure rather than a record of trading activity.

Who is the reporting person on this LOMA Form 3 filing?

The reporting person is Diego Dayenoff, identified as a director of Loma Negra. The filing establishes him as subject to Section 16 reporting, meaning future changes in his beneficial ownership of LOMA securities must be reported on Forms 4 or 5.

What role does Diego Dayenoff hold at Loma Negra (LOMA)?

Diego Dayenoff is listed as a director of Loma Negra. This board-level role makes him an insider for U.S. securities law purposes, triggering the requirement to file Form 3 and any subsequent Forms 4 or 5 for changes in his holdings.

Does the Form 3 for LOMA include any derivative securities information?

The derivative section in the provided data is empty, and derivative transaction counts are zero. This indicates no options, warrants, or other derivative positions are reported for Diego Dayenoff in this particular Form 3 excerpt.

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

OMB APPROVAL

OMB Number:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

Dayenoff Diego

(Last) (First) (Middle)

CECILIA GRIERSON 355, 4TH FLOOR

(Street)

BUENOS AIRES C1 C1107CPG

(City) (State) (Zip)

ARGENTINA

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
04/16/2026

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

3a. Foreign Trading Symbol
[LOMA.BA]

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

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

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

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)

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)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

No securities are beneficially owned.

	/s/Fabian Gregorio Fuente Attorney-in-fact for Diego Dayenoff	04/16/2026
	** 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.
* Form 3: SEC 1473 (03-26)