Schedule 13D/A: 2.29M GeoPark Shares Reported; Mid-September Sales Listed

Rhea-AI Filing Summary

GeoPark Ltd Schedule 13D Amendment discloses that Pampa Energy Inc. and Generation Argentina Inc. each report beneficial ownership of 2,285,195 shares of GeoPark common stock, representing 4.43% of the class based on 51,567,663 shares outstanding per the issuer's August 5, 2025 6-K. The filing states the shares are directly owned by GASA, a wholly-owned subsidiary of Pampa Energia, and that the Reporting Persons have sole voting and dispositive power over those shares.

The amendment also reports recent open-market dispositions by GASA in mid-September 2025: sales on September 15 of 60,911 shares at $6.31560, September 16 of 1,044,332 shares at $6.47561, September 17 of 1,009,500 shares at $6.53300, and September 18 of 810,208 shares at $6.32188, with aggregate proceeds shown per trade. Other items state no material changes where indicated and no additional contracts or exhibits are reported.

Positive

• Clear disclosure of beneficial ownership and voting/dispositive power for 2,285,195 shares
• Quantified stake of 4.43% calculated on the issuer's stated 51,567,663 shares outstanding
• Detailed reporting of recent open-market transactions with prices and gross proceeds

Negative

• Significant sell-off activity: four transactions totaling large share volumes in mid-September 2025
• No new purpose or strategic intent disclosed despite substantial recent dispositions

Insights

Securities Analyst

TL;DR Reporting persons hold a 4.43% stake via a wholly-owned subsidiary and completed substantial open-market sales over four days.

The filing clarifies beneficial ownership and voting power: 2,285,195 shares are held directly by GASA with sole voting and dispositive authority attributed to Pampa Energy/Generation Argentina as reporting persons. The 4.43% stake is calculated on 51,567,663 outstanding shares per the issuer's August 5, 2025 6-K. The Schedule 13D/A documents material open-market disposals across September 15–18, 2025, listing per-share prices and gross proceeds for each transaction. No changes are reported for purpose, source of funds, or contractual arrangements. For investors, the filing is a formal update of position and recent liquidity activity rather than a strategic disclosure of new agreements or control intentions.

Corporate Governance Expert

TL;DR Ownership and control are clearly disclosed; no new agreements or governance arrangements are reported.

The amendment reaffirms that GASA is the direct owner and that reporting persons retain sole voting and dispositive powers attributable to Pampa Energia. Item disclosures indicate no material changes to identity, purpose, or contractual relationships from the prior Schedule 13D. Exhibits and additional arrangements are marked not applicable. The document provides necessary transparency about holdings and recent sales but does not disclose any governance collaboration, board nominations, or strategic transactions.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

(Amendment No. 1)

GeoPark Ltd

(Name of Issuer)

Common Shares, par value $0.001

(Title of Class of Securities)

G38327105

(CUSIP Number)

Maria Carolina Sigwald
Maipu 1,
Buenos Aires, C1, 1084
54-11-4344-6000

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

09/18/2025

(Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

SCHEDULE 13D

CUSIP No. G38327105

1

Name of reporting person

Pampa Energy Inc.

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

OO

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

ARGENTINA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 2,285,195.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 2,285,195.00
10	Shared Dispositive Power 0.00

11

Aggregate amount beneficially owned by each reporting person

2,285,195.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

4.43 %

14

Type of Reporting Person (See Instructions)

CO, HC

SCHEDULE 13D

CUSIP No. G38327105

1

Name of reporting person

Generation Argentina Inc

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

OO

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

ARGENTINA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 2,285,195.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 2,285,195.00
10	Shared Dispositive Power 0.00

11

Aggregate amount beneficially owned by each reporting person

2,285,195.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

4.43 %

14

Type of Reporting Person (See Instructions)

CO

SCHEDULE 13D

Item 1.	Security and Issuer
(a)	Title of Class of Securities: Common Shares, par value $0.001
(b)	Name of Issuer: GeoPark Ltd
(c)	Address of Issuer's Principal Executive Offices: CALLE 94 NO. 11-30 8 PISO, BOGOTA, COLOMBIA , 00000.
Item 1 Comment: This Amendment No. 1 amends and supplements the Schedule 13D previously filed with the U.S. Securities and Exchange Commission (the "SEC") on May 22, 2025 (as amended from time to time, the "Schedule 13D"), with respect to the common stock, $0.001 par value per share (the "Shares") of GeoPark Limited, an exempted company incorporated under the laws of Bermuda ("GeoPark Limited" or the "Issuer"), which are listed on the New York Stock Exchange (the "NYSE"). The principal executive offices of GeoPark Limited are located at Calle 94 N(degree) 11-30 8(degree) piso, Bogota, Colombia. Unless otherwise stated herein, the Schedule 13D remains in full force and effect. Capitalized terms used in this Amendment No. 1 and not otherwise defined shall have the same meanings ascribed to them in the original Schedule 13D.
Item 2.	Identity and Background
(a)	No material changes to Schedule 13D.
Item 3.	Source and Amount of Funds or Other Consideration
	No material changes to Schedule 13D.
Item 4.	Purpose of Transaction
	No material changes to Schedule 13D.
Item 5.	Interest in Securities of the Issuer
(a)	GASA directly owns the Reported Securities. GASA is a wholly-owned subsidiary of Pampa Energia. Therefore, each of the Reporting Persons is deemed to have, as of the date hereof, the following interest in the Reported Securities: Shares Owned: 2,285,195 % of Class(1): 4.43% Sole Power to Vote: 2,285,195 Shared Power to Vote: 0 Sole Power to Dispose: 2,285,195 Shared Power to Dispose: 0 (1) Calculated based on 51,567,663 shares outstanding as of the last 6-K filing of the Issuer published on August 5, 2025. Since the last publication of the 13D form, Geopark Limited has increased its share capital from 51,247,287 to 51,567,663.
(b)	GASA directly owns the Reported Securities. GASA is a wholly-owned subsidiary of Pampa Energia. Therefore, each of the Reporting Persons is deemed to have, as of the date hereof, the following interest in the Reported Securities: Shares Owned: 2,285,195 % of Class(1): 4.43% Sole Power to Vote: 2,285,195 Shared Power to Vote: 0 Sole Power to Dispose: 2,285,195 Shared Power to Dispose: 0 (1) Calculated based on 51,567,663 shares outstanding as of the last 6-K filing of the Issuer published on August 5, 2025. Since the last publication of the 13D form, Geopark Limited has increased its share capital from 51,247,287 to 51,567,663.
(c)	During the past sixty days, GASA has made the following open market transactions on the NYSE regarding the Issuer's Shares: On September 15, 2025, GASA sold 60,911 Shares at US$ 6.31560 per Share through an open market transaction, totaling US$ 384,689.51. On September 16, 2025, GASA sold 1,044,332 Shares at US$ 6.47561 per Share through an open market transaction, totaling US$ 6,762,686.74. On September 17, 2025, GASA sold 1,009,500 Shares at US$ 6.53300 per Share through an open market transaction, totaling US$ 6,595,063.50. On September 18, 2025, GASA sold 810,208 Shares at US$ 6.32188 per Share through an open market transaction, totaling US$ 5,122,036.94.
(d)	Not applicable.
(e)	Not applicable.
Item 6.	Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer
	No material changes to Schedule 13D.
Item 7.	Material to be Filed as Exhibits.
	Not applicable.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Pampa Energy Inc.

Signature:	Gustavo Mariani
Name/Title:	Gustavo Mariani / CEO
Date:	09/18/2025

Generation Argentina Inc

Signature:	Gustavo Mariani
Name/Title:	Gustavo Mariani / Legal Representative
Date:	09/18/2025

FAQ

What stake does Pampa Energy hold in GeoPark (GPRK)?

The filing reports beneficial ownership of 2,285,195 shares, representing 4.43% of the class based on 51,567,663 outstanding shares.

Who directly owns the reported GeoPark shares?

The shares are directly owned by GASA, which is a wholly-owned subsidiary of Pampa Energia.

Were there recent transactions in GeoPark shares by the reporting persons?

Yes. GASA sold 60,911 shares on Sept 15, 1,044,332 shares on Sept 16, 1,009,500 shares on Sept 17, and 810,208 shares on Sept 18, 2025, with per-share prices listed in the filing.

Do the reporting persons have voting control over the shares?

Yes. The filing states the reporting persons have sole voting and sole dispositive power for the 2,285,195 shares.

Did the Schedule 13D/A disclose any new contracts or arrangements regarding GeoPark?

No. Item 6 states no material changes to prior disclosures and no new contracts, arrangements, or exhibits are reported.