Strong Operational and Financial Delivery in Line With 2025 Guidance

Seamless Takeover of the Vaca Muerta Operation

Quarterly Cash Dividend of $0.03 Per Share

Establishes Special Committee of Independent Directors to Evaluate Any Revised Offer From Parex and Other Value-maximizing Alternatives for the Company

GeoPark Limited (“GeoPark” or the “Company”) (NYSE: GPRK), a leading independent energy company with over 20 years of successful operations across Latin America, reports its consolidated financial results for the three-month period ended September 30, 2025 (“Third Quarter” or “3Q2025”). A conference call to discuss these financial results will be held on November 6, 2025, at 10:00 am (Eastern Standard Time).

GeoPark delivered a strong quarter, driven by higher production, stable prices, and disciplined cost control, in line with 2025 guidance. The Company continued to strengthen its balance sheet through proactive debt management and robust cash generation while advancing its strategic priorities by successfully completing the Vaca Muerta acquisition and launching a revised dividend program.

On October 21, 2025, GeoPark presented its long-term strategic plan, operational priorities and updated capital allocation framework, outlining a clear two-fold reset strategy to (i) sustain a resilient, high-margin base in Colombia and (ii) scale a transformational growth platform in Argentina’s Vaca Muerta formation. The plan sets an outlook through 2030, targeting consolidated production of approximately 42,000–46,000 boepd, Adjusted EBITDA between $520–550 million, and a net leverage ratio of 0.8–1.0x¹. The strengthening of the Company’s balance sheet and its long-term strategic plan reinforce GeoPark’s commitment to disciplined sustainable growth, portfolio diversification, shareholder returns and long-term value creation.

THIRD QUARTER 2025 FINANCIAL SUMMARY

In 3Q2025, GeoPark reported Adjusted EBITDA² of $71.4 million (57% margin), broadly stable versus 2Q2025, explained by higher production during the quarter (28,136 boepd vs 27,380 boepd in 2Q2025) and the stability of realized prices ($57.1/bbl vs $57.4/bbl in 2Q2025). Operating costs stood at a competitive $12.5 per barrel of produced boe, in line with 2Q2025 and overall market guidance for 2025. Year-to-date Adjusted EBITDA amounted to approximately $230.0 million, supported by higher production and lower operational and G&A costs across the business, reflecting the early impact of the cost discipline and efficiency initiatives underway.

Net income for the quarter totaled $15.9 million, compared to a net loss of $10.3 million in 2Q2025. This result for the quarter accounts for a non-recurring write-off of $7.5 million related to exploration costs incurred in previous years in the Putumayo Basin in Colombia. Excluding the non-recurring events in each of 2Q2025 and 3Q2025³, net profit in 3Q2025 was $23.4 million compared to $20.7 million in 2Q2025.

Capital expenditures totaled $17.5 million in 3Q2025, primarily focused on maintaining and improving production through an integrated drilling and workover campaign in the Llanos 34 block (GeoPark operated, 45% WI). At the same time, activities progressed on multiple fronts across GeoPark’s exploration assets in the Llanos basin. During the quarter, the Company advanced drilling operations on the Toritos Norte 3 well in the Llanos 123 block (GeoPark operated, 50% WI) and continued infrastructure development on key platforms in Puerto Gaitán, laying a solid foundation for the upcoming drilling campaign in the Llanos 104 block.

Since the closing of the Vaca Muerta acquisition on October 16, 2025, the Company has safely and efficiently taken over the operations, ensuring seamless operational continuity, and within less than 10 days has started delivering on its plan by commencing workover activities to install rod pumps in 3 wells in the Loma Jarillosa Este block to improve productivity. Crude is being sold locally, and procurement is underway to secure the activity plan for 2026. Additionally, the Company is identifying multiple cost efficiency and synergy opportunities to accelerate development, optimize returns and unlock additional value.

The Company continued to generate strong operating cash flow during the quarter, supported by the efficiency initiatives implemented in 2Q2025. This solid performance enabled GeoPark to fully fund its investment program, reduce debt, distribute dividends, and make an early payment related to the Vaca Muerta acquisition⁴. As a result, at the end of 3Q2025, GeoPark’s cash in hand stood at $197.0 million.

During the quarter, GeoPark repurchased and cancelled $33.0 million in aggregate principal of its 2030 Notes at an average price of $0.90 on the dollar. In total, between June and October, the Company repurchased $108.3 million in aggregate principal of its 2030 Notes, resulting in annual cash coupon savings of $9.5 million. Net debt stood at $373.4 million at the end of 3Q2025, with a low leverage ratio of 1.2x, reflecting a robust capital structure.

To mitigate downside risk from oil price volatility, the Company continues to proactively manage its hedging strategy. As of the date hereof, oil price protection for 2026 has been secured through 3-way collars, for approximately 62% of full-year production, with a first floor at $65/bbl, a second floor at $50/bbl and average ceilings of $73/bbl.

As announced on October 21, 2025, ahead of the Company’s Investor Day, and following the completion of the Vaca Muerta acquisition, the Board approved a revised dividend program including a total expected distribution of approximately $6 million over the next four quarters, equivalent to $1.5 million per quarter (or $0.03 per share), commencing with the 3Q2025 results payout and ending with the 2Q2026 results payout. Dividends will be suspended commencing with the 3Q2026 results, aligned with increased capital expenditures for Vaca Muerta. The Board will reassess dividends once positive free cash flow generation resumes after the peak investment phase, consistent with GeoPark’s disciplined, returns-based capital framework.

Looking ahead, GeoPark is on track to release its 2026 Work Program and Investment Guidelines before year-end. This plan will reflect the Company’s renewed strategic direction—focused on building and maximizing value delivery from its high-margin base in Colombia, and new operated assets in Vaca Muerta.

Felipe Bayon, Chief Executive Officer of GeoPark, said: “Our third-quarter results underscore the strength and resilience of GeoPark’s business model and the confidence with which we are executing our strategy — delivering operational excellence, disciplined capital allocation, and profitable growth. With a robust balance sheet, a clear plan, and a portfolio of high-quality and distinctive assets that combines stable cash generation in Colombia with transformative growth in Argentina, GeoPark is well positioned to maximize value and deliver sustainable returns for our shareholders.”

UPDATE ON ENGAGEMENT WITH PAREX RESOURCES

As communicated in GeoPark’s press release of October 29, 2025, the GeoPark Board is open to opportunities that fairly reflect the Company’s value, strategy, and long-term potential. Following a robust process, the Board unanimously determined that the unsolicited, non-binding proposal of $9.00 per share submitted by Parex Resources (“Parex”) on September 4, 2025, prior to the announcement of GeoPark’s transformative acquisition in Vaca Muerta, undervalues GeoPark, fails to reflect its growth prospects and diversified portfolio, and is not in its shareholders’ best interests.

Following Parex’s public reiteration of its $9.00 per share offer, the Board unanimously agreed that Felipe Bayon should further engage with Parex and provide additional information to help it improve its offer. In addition, GeoPark’s Board of Directors has formed a Special Committee of independent directors, including Sylvia Escovar Gomez, Constantin Papadimitriou, Somit Varma and Brian Maxted, to evaluate any potential revised offer from Parex and other value-maximizing alternatives for the Company. GeoPark does not intend to make any further public comment on the process unless and until it determines that further disclosure is appropriate.

Supplementary information is available at the following link:

https://ir.geo-park.com/3Q25-SupplementaryRelease

THIRD QUARTER 2025 HIGHLIGHTS

Oil and Gas Production and Operations

• 3Q2025 consolidated average oil and gas production of 28,136 boepd⁵, reflecting solid delivery from core operated and non-operated assets
• Year-to-date consolidated average oil and gas production of 28,194 boepd, within high-end production guidance for 2025
• 5 rigs in operation (2 drilling and 3 workover) at the end of 3Q2025
• Vaca Muerta year-to-date average oil and gas production of approximately 2,060 boepd, with 3Q2025 average production of 1,660 boepd

Revenue, Adjusted EBITDA and Net Profit

• Revenue of $125.1 million, 4% higher than 2Q2025, reflecting higher volumes and a stable realized price
• Adjusted EBITDA of $71.4 million with a 57% margin, leveraged by stable operating costs
• Operating profit of $32.4 million, driven by the same factors that explain the previously discussed net income
• Net profit of $15.9 million ($0.31 basic earnings per share)

Cost and Capital Efficiency

• Capital expenditures of $17.5 million, focused on maintaining and improving production and advancing exploration activities across the Llanos basin
• 3Q2025 Adjusted EBITDA to capital expenditures ratio of 4.1x
• ROACE of 23%⁶
• Operating costs per produced boe of $12.5
• By September 2025, the Company had achieved $15.1 million in efficiencies, equivalent to about $19.5 million in annualized structural savings

Balance Sheet and Liquidity

• Cash in hand of $197.0 million
• Full-Year net leverage of 1.2x and no principal debt maturities until January 2027
• During 3Q2025, successfully completed open market repurchases of $33.0 million in aggregate principal of its 2030 Notes below par, generating a $3.0 million gain and annual cash coupon savings of $2.9 million

Hedging and Risk Management

• $1.5 million gain from commodity risk management contracts recognized in 3Q2025 revenue
• As of the date hereof, approximately 62% of 2026 expected production has been protected through 3-way collars with average strikes of $65/$50/$73

Shareholder Value Return

• Quarterly cash dividend of $0.03 per share, or approximately $1.5 million, payable on December 4, 2025, to shareholders of record at the close of business on November 19, 2025, in line with the revised dividend program approved by the Board following the completion of the Vaca Muerta acquisition, and considering GeoPark’s projected capital needs
• Dividend suspension commencing with the 3Q2026 results
• The Board will reassess dividends once positive free cash flow generation resumes after the peak investment phase, consistent with GeoPark’s disciplined, returns-based capital framework

All figures are expressed in US Dollars and growth comparisons refer to the same period of the prior year, except when specified. Definitions and terms used herein are provided in the Glossary at the end of this document. This press release and its supplementary information do not contain all the Company’s financial information and the Company’s consolidated financial statements and corresponding notes for the period are available on the Company’s website.

CONFERENCE CALL INFORMATION

GeoPark management will host a conference call on Thursday, November 6, 2025, at 10:00 am (Eastern Standard Time) to discuss the 3Q2025 financial results.

To listen to the call, participants can access the webcast located in the Invest with Us section of the Company’s website at www.geo-park.com, or by clicking below:

https://events.q4inc.com/attendee/869247101

Interested parties may participate in the conference call by dialing the numbers provided below:

United States Participants: +1 646-844-6383

Global Dial-In Numbers:

https://www.netroadshow.com/events/global-numbers?confId=72342

Passcode: 039892

Please allow extra time prior to the call to visit the website and download any streaming media software that might be required to listen to the webcast.

An archive of the webcast replay will be made available in the Invest with Us section of the Company’s website at www.geo-park.com after the conclusion of the live call.

GLOSSARY

NOTICE

Additional information about GeoPark can be found in the Invest with Us section of the website at www.geo-park.com.

Rounding amounts and percentages: Certain amounts and percentages included in this press release and its supplementary information have been rounded for ease of presentation. Percentage figures included in this press release and its supplementary information have not in all cases been calculated on the basis of such rounded figures, but on the basis of such amounts prior to rounding. In addition, certain other amounts that appear in this press release and its supplementary information may not sum due to rounding.

This press release and its supplementary information contain certain oil and gas metrics, including information per share, operating netback, reserve life index and others, which do not have standardized meanings or standard methods of calculation and therefore such measures may not be comparable to similar measures used by other companies. Such metrics have been included herein to provide readers with additional measures to evaluate the Company’s performance; however, such measures are not reliable indicators of the future performance of the Company and future performance may not compare to the performance in previous periods.

CAUTIONARY STATEMENTS RELEVANT TO FORWARD-LOOKING INFORMATION

This press release and its supplementary information contain statements that constitute forward-looking statements. Many of the forward-looking statements contained in this press release can be identified by the use of forward-looking words such as ‘‘anticipate,’’ ‘‘believe,’’ ‘‘could,’’ ‘‘expect,’’ ‘‘should,’’ ‘‘plan,’’ ‘‘intend,’’ ‘‘will,’’ ‘‘estimate’’ and ‘‘potential,’’ among others.

Forward-looking statements that appear in a number of places in this press release include, but are not limited to, statements regarding the intent, belief or current expectations, regarding various matters, including full year guidance, five-year outlook target figures, hedging of expected production, full year net leverage figures, strategic initiatives, growth and capital allocation, drilling campaign, release of 2026 Work Program and Investment Guidelines. Forward-looking statements are based on management’s beliefs and assumptions, and on information currently available to the management. Such statements are subject to risks and uncertainties, and actual results may differ materially from those expressed or implied in the forward-looking statements due to various factors.

Forward-looking statements speak only as of the date they are made, and the Company does not undertake any obligation to update them in light of new information or future developments or to release publicly any revisions to these statements in order to reflect later events or circumstances, or to reflect the occurrence of unanticipated events. For a discussion of the risks facing the Company which could affect whether these forward-looking statements are realized, see filings with the U.S. Securities and Exchange Commission (SEC).

Oil and gas production figures included in this press release and its supplementary information are stated before the effect of royalties paid in kind, consumption and losses. Annual production per day is obtained by dividing total production by 365 days.

Non-GAAP Measures: The Company believes Adjusted EBITDA, free cash flow and operating netback per boe, which are each non-GAAP measures, are useful because they allow the Company to more effectively evaluate its operating performance and compare the results of its operations from period to period without regard to its financing methods or capital structure. The Company’s calculation of Adjusted EBITDA, free cash flow, and operating netback per boe may not be comparable to other similarly titled measures of other companies.

Adjusted EBITDA: The Company defines Adjusted EBITDA as profit for the period before net finance costs, income tax, depreciation, amortization and certain non-cash items such as impairments and write-offs of unsuccessful exploration and evaluation assets, accrual of stock options and stock awards, unrealized results on commodity risk management contracts and other non-recurring events. Adjusted EBITDA is not a measure of profit or cash flow as determined by IFRS. The Company excludes the items listed above from profit for the period in arriving at Adjusted EBITDA because these amounts can vary substantially from company to company within our industry depending upon accounting methods and book values of assets, capital structures and the method by which the assets were acquired. Adjusted EBITDA should not be considered as an alternative to, or more meaningful than, profit for the period or cash flow from operating activities as determined in accordance with IFRS or as an indicator of our operating performance or liquidity. Certain items excluded from Adjusted EBITDA are significant components in understanding and assessing a company’s financial performance, such as a company’s cost of capital and tax structure and significant and/or recurring write-offs, as well as the historic costs of depreciable assets, none of which are components of Adjusted EBITDA. For a reconciliation of Adjusted EBITDA to the IFRS financial measure of profit, see the accompanying financial tables and the supplementary information.

Operating Netback per boe: Operating netback per boe should not be considered as an alternative to, or more meaningful than, profit for the period or cash flow from operating activities as determined in accordance with IFRS or as an indicator of the Company’s operating performance or liquidity. Certain items excluded from operating netback per boe are significant components in understanding and assessing a company’s financial performance, such as a company’s cost of capital and tax structure and significant and/or recurring write-offs, as well as the historic costs of depreciable assets, none of which are components of operating netback per boe. The Company’s calculation of operating netback per boe may not be comparable to other similarly titled measures of other companies.

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