ECOPETROL (EC) director files Form 3 initial insider ownership report

Rhea-AI Filing Summary

ECOPETROL S.A. director Cesar Eduardo Loza Arenas filed an initial insider ownership report on Form 3. The filing lists him as a director but does not report any insider transactions, and the transaction summary shows no share purchases, sales, exercises, or other movements.

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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^*

Loza Arenas Cesar Eduardo

(Last) (First) (Middle)

C/O ECOPETROL S.A.

KR 13 36-24

(Street)

BOGOTA 110311

(City) (State) (Zip)

COLOMBIA

(Country)

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

3. Issuer Name and Ticker or Trading Symbol
ECOPETROL S.A. [ EC ]

3a. Foreign Trading Symbol
[ECOPETROL]

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:

No securities are beneficially owned.

	/s/ Cesar Eduardo Loza Arenas	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.
* Form 3: SEC 1473 (03-26)

FAQ

What does the ECOPETROL (EC) Form 3 filing by Cesar Eduardo Loza Arenas show?

The Form 3 filing shows that Cesar Eduardo Loza Arenas is a director of ECOPETROL S.A. It serves as his initial insider ownership report and lists no share purchases, sales, or other transactions in the summarized data.

Did Cesar Eduardo Loza Arenas buy or sell ECOPETROL (EC) shares in this Form 3?

No, the Form 3 summary indicates zero buy and zero sell transactions. All transaction-related counts, including purchases, sales, exercises, gifts, and tax withholdings, are reported as zero in this filing data.

What insider role is reported for Cesar Eduardo Loza Arenas at ECOPETROL (EC)?

The filing identifies Cesar Eduardo Loza Arenas as a director of ECOPETROL S.A. He is not flagged as an officer or ten percent owner in the provided metadata for this Form 3 insider ownership report.

Does the ECOPETROL (EC) Form 3 include any derivative securities for the director?

No, the derivative section is empty in this Form 3 data. The derivativeSummary shows no listed options, warrants, or other derivative instruments, and derivativeTransactionCount is reported as zero.

What does a neutral net buy/sell direction mean in the ECOPETROL (EC) Form 3?

The net buy/sell direction is marked as neutral because the filing shows no reported share purchases or sales. All transaction counts are zero, so there is no net change in this director’s reported trading activity.