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Disclaimer The information contained herein has been prepared by GeoPark solely for informational purposes. No representation or warranty, either expressed or implied, is provided in relation to the accuracy, completeness or reliability of the information contained herein and nothing shall be relied upon as a promise or representation as to performance of any investment or otherwise. The information in this presentation is current only as of the date on its cover. For any time after the cover date of this presentation, the information - including information concerning our business, financial condition, results of operations and prospects - may have changed. This presentation includes forward-looking statements. Forward-looking statements 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 presentation include, but are not limited to, statements regarding our intent, belief or current expectations, regarding various matters, including, production growth, the drilling campaign, dividends, operating expenses, future capital expenditure, debt, Adjusted EBITDA and free cash flow. Forward-looking statements are based on our management’s beliefs and assumptions and on information currently available to our 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 GeoPark 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. This presentation includes forward-looking non-GAAP measures. The Company is unable to present a quantitative reconciliation of the expected Adjusted EBITDA because the Company cannot reliably predict certain of the necessary components, such as write-off of unsuccessful exploration efforts or impairment loss on non-financial assets, etc. Since free cash flow is calculated based on Adjusted EBITDA, for similar reasons, the Company does not provide a quantitative reconciliation of the expected free cash flow forecast. Statements related to resources are deemed forward-looking statements as they involve, based on certain estimates and assumptions, the implied assessment that the resources will be discovered and can be profitably produced in the future. Specifically, forward-looking information contained herein regarding resources may include: estimated volumes and value of the Company's oil and gas resources and the ability to finance future development, as well as the conversion of a portion of resources into reserves. The information included in this presentation regarding GeoPark’s estimated quantities of proved, probable and possible reserves as of December 31, 2025; is derived, in part, from the reports prepared by DeGolyer and MacNaughton (“D&M”), independent reserves engineers. Certified reserves refer to net reserves independently evaluated by D&M. The reserves estimates in the reports prepared by D&M were prepared in accordance with the Petroleum Resource Management System Methodology (the “PRMS”) approved in 2007 and revised in 2018 by the Society of Petroleum Engineers, the World Petroleum Council, the American Association of Petroleum Geologists, the Society of Petroleum Evaluation Engineers, the Society of Exploration Geophysicists, the Society of Petrophysicists and Well Log Analysts, and the European Association of Geoscientists & Engineers. PRMS proved reserves (1P) are estimated quantities of oil, condensate and natural gas from which there is geological and engineering data that demonstrate with reasonable certainty that they are recoverable in future years from known reservoirs under existing economic and operating conditions. PRMS probable reserves (2P) are those additional reserves which analysis of geoscience and engineering data indicate are less likely to be recovered than proved reserves but more certain to be recovered than possible reserves. PRMS possible reserves (3P) are those additional reserves that analysis of geoscience and engineering data indicates are less likely to be recoverable than probable reserves. The accuracy of any resource estimate is a function of the quality of the available data and of engineering and geological interpretation. Results of drilling, testing and production that postdate the preparation of the estimates may justify revisions, some or all of which may be material. Accordingly, resource estimates are often different from the quantities of oil and gas that are ultimately recovered, and the timing and cost of those volumes that are recovered may vary from that assumed. Reserves estimates prepared in accordance with SEC rules and regulations may differ significantly from reserves estimates prepared in accordance with PRMS guidelines.
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M ANAG E ME NT PR ESEN TAT I O N Larger, More Cash-Generative GeoPark • Long-duration reserves • Accelerated FCF inflection Among the First Movers to Execute a CPP • Demonstrates GeoPark's differentiated operating capabilities • Technical team with direct Orinoco Belt experience Transformational Value Creation • Immediate value accretion to shareholders of ~$1.5 / Share • Long-term production and reserve growth • Country-risk re-rating upside Notes: (1) Brent Price: $75 / BBL 3 Transformational Entry into Venezuela: Giant-Scale Brownfield Acquisition UNIQUE PLATFORM ACROSS THREE WORLD-CLASS BASINS LLANOS ORINOCO BELT VACA MUERTA 25-Years Production Participation Contract Attractive Economics 65% Net Working Interest ~400 MM BBL Cumulative Net Production Long-Duration Growth Platform Net to GeoPark through the 25-year CPP BARE IS A UNIQUE OPPORTUNITY… ~4x EBITDA Growth EBITDA Trajectory From ~$280 MM in 2025 to ~$1.2 BN(1) by 2030E ~3x Production Production Scale From current ~ 28 KBOEPD 2025A to 75 - 85 KBOEPD by 2030E …THAT MATERIALLY ACCELERATES GEOPARK’S GROWTH
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M ANAG E ME NT PR ESEN TAT I O N Strategic Entry into One of the World's Largest Hydrocarbon Resource Basins 15.7 BN BBL Original Oil in Place (OOIP) + 700 MM BBL Cumulative Production + 100 KBOPD Historical Peak Gross Production ~4 - 5% Current Recovery Factor ~ 1,100 Total Wells ~11,000 BOPD Current Gross Production 8° – 10° API Gravity (Extra-Heavy) 4 BARE BLOCK KEY FIGURES Bare Block Caracas Orinoco Heavy- Oil Belt
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M ANAG E ME NT PR ESEN TAT I O N PRODUCTION (KBOPD) 5 0 20 40 60 80 100 120 140 160 180 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 Gross Production Net Production Notes: (1) GeoPark retains 100% of incremental production between the 10,000 bbl/d baseline and 28,500 bbl/d. For production volumes above 28,500 bbl/d, GeoPark is entitled to 65% of total production Potential profile adjustment through contract extension Bare: Phased Redevelopment to Balance Growth and Capital Discipline • ~50 CSI (ICV) wells • Reservoir management • Maximize recovery, maintain production PHASE 4 - RECOVER (2045+) Long-Duration Recovery • ~700 CSS (IAV) treatments • Steam generation expansion and thermal facilities build - out • Increase Recovery Factor at production plateau PHASE 3 - MAINTAIN (2039–2045) Thermal Recovery Infrastructure ~90 KBOPD Avg. CAPEX Per Year: $30 - 50 MM ~85 – 30 KBOPD CAPEX Per Year: ~$0 MM • ~400-450 Well Reactivations • ~100 RA/RC – Workovers • ~30 Horizontal Wells • Artificial Lift Optimization • Critical infrastructure rehabilitation • Lower-Risk Production Ramp-Up • Validate well integrity & field readiness PHASE 1 - RESTART (2026–2030) Production Reactivation 11 → +56 KBOPD Avg CAPEX Per Year 26-28 E: $40-80 MM Avg CAPEX Per Year 29-30 E: ~$120 - 140 MM 57 → 90 KBOPD Avg. CAPEX Per Year: $90 - 110 MM • ~180 Horizontal Wells • ~200 RA/RC - Workovers • ~250-350 CSS (IAV) treatments • Continue Artificial Lift Optimization • Build incremental production capacity PHASE 2 - BUILD (2031–2038) New Drilling & Workovers Restore production through existing asset base From restoring production to growth Thermal recovery the primary engine to maintain stable production Maximize ultimate recovery (1)
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M ANAG E ME NT PR ESEN TAT I O N A Larger, More Diversified and Cash-Generative GeoPark PRO-FORMA NET PRODUCTION (KBOEPD) 6 ARGENTINA: Vaca Muerta Growth Engine World-class Unconventional Resource Short-cycle Growth Optionality Strategy Unchanged VENEZUELA: Orinoco Belt Long-Duration Platform Long-Duration Heavy Oil Redevelopment 25-Year CPP Contractual Life Diversification COLOMBIA: Llanos Cash-Flow Engine Conventional, Low Break-Even Production Core Operating Platform with Continued Development Strategy Unchanged PRO-FORMA EBITDA(1) ($MM) PRO-FORMA CAPEX ($MM) PRO-FORMA FREE CASH FLOW (1) ($MM) – 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0 2026E 2027E 2028E 2029E 2030 – 200 400 600 800 1,000 1,200 1,400 2026E 2027E 2028E 2029E 2030E – 200 400 600 800 1,000 1,200 2026E 2027E 2028E 2029E 2030E Notes: (1) Brent Price: $75 / BBL Capital-light investment profile in Venezuela relative to its expected EBITDA generation capacity ArgentinaColombia Venezuela Total Free Cash Flow (Net) -250 -150 -50 50 150 250 350 450 550 2026E 2027E 2028E 2029E 2030E
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M ANAG E ME NT PR ESEN TAT I O N 2P RESERVES (MMBOE) EBITDA(3) ($BN) NET PRODUCTION (KBOEPD) OPERATIONAL BREAKEVEN(3) ($ / BOE) 0.28 + 1.2 GeoPark 2025A Combined Platform 2030E ~4x 28 ~ 75 - 85 GeoPark 2025A Combined Platform 2030E ~3x 121 240 - 260 GeoPark 2025A Combined Platform ~2x 51 28 GeoPark 2025A Combined Platform 2030E -23 Bare represents a unique opportunity to materially enhance GeoPark's scale and cash flow generation profile Notes: (1) Preliminary estimates according to proposed development plan, subject to confirmation through an independent reser ves report; (2) Combined platform reserves comprise GeoPark’s 2025 audited reserves plus preliminary reserve estimates for YE2026 for Bare ; (3) Brent Price: $75 / BBL; (3) Considers EBIT DA, Taxes and Working Capital 7 A Clear Path Towards Greater Scale and Operational Efficiency (1)(2) PROFORMA FIGURES
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M ANAG E ME NT PR ESEN TAT I O N Scaling Into a New League of Junior E&P Players GeoPark strengthens its position as one of Latin America’s premier independent E&P platforms Notes: (1) Considers GeoPark reserves as of year -end 2025 plus preliminary estimated Bare reserves, subject to confirmation thro ugh an independent reserves report 8 COMPANY COUNTRY EBITDA 2025A ($MM) PRODUCTION 2025A (KBOEPD) PLAYER A PLAYER B 2030E PLAYER C PLAYER D PLAYER E 2025A PLAYER F 1,596 1,349 ~1,200 1,009 806 301 277 258 115 106 75 - 85 84 81 45 28 27 2025 2P RESERVES (MMBOE) 2025 1P RESERVES (MMBOE) 757 588 459 296 143 110 - 130 113 69 PLAYER B PLAYER A PLAYER D PLAYER C PLAYER F PLAYER E 2025 A + Bare 2026E(1 ) 2025A 1,022 611 240 - 260 182 178 121 n.a. -n.a. PLAYER B PLAYER D PLAYER F PLAYER E PLAYER A PLAYER C 2025A + Bare 2026E (1 ) 2025A
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M ANAG E ME NT PR ESEN TAT I O N Overview of the Transaction Structure ✓ GeoPark indirectly acquired 5% of the Signing Vehicle as a result of GeoPark’s participation in the technical evaluation and negotiation efforts with PDVSA 5% STAKE IN SIGNING VEHICLE ▪ CPP Execution and Effectiveness CPP EXECUTION ▪ GeoPark acquires remaining 95% stake in the Signing Vehicle ACQUISITION REMAINING STAKE ▪ GeoPark issues shares upon CPP effectiveness SHARES ISSUANCE Grupo Gilinski 95% 5% Signing Vehicle CPP Execution 95% Indirect Stake in Signing Vehicle Grupo Gilinski 42.1 MM GeoPark Shares @ $12.22 Price per Share SIMPLIFIED TRANSACTION STRUCTURE 9
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M ANAG E ME NT PR ESEN TAT I O N Notes: (1) Represents 100% of Bare; (2) As of August 21 st, 2026; (3) Tender Offer to be launched after closing of the transaction; (4) Calculated as the difference between the implied consid eration of US$515mm and the estimated fair value of ~US$570mm; (5) Calculated as the difference between the implied value of the share consideration at US$12.22/share (US$515mm) and its implied value based on the 30 -day VWAP of US$9.67/share as of August 21 st, 2026 Immediate Value Accretion While Preserving Financial Strength ALL-STOCK TRANSACTION STRUCTURE Acquired at ~5% discount to fair value including country risk adjustment Independently Validated Value ~$570 MM(1) All-stock transaction protecting balance sheet maintaining flexibility to fund its growth priorities in Colombia and Argentina Cash Consideration $0 MM $12.22 per share 26% premium to 30 -day VWAP (2) Issued at a Premium 42.1 MM Shares Tender Offer(3) at a Premium $100 MM $12.22 per share 26% premium to 30 -day VWAP (2) ADDITIONAL SHAREHOLDER LIQUIDITY OPTION 10 ~$160 MM | $1.5 / Sh. Imme diate Valu e Ac cre tio n ~$105 MM | $1.0 / Sh. Iss uan ce pr emium ove r 30-D ay V WA P(5) ~$55 MM | $0.5 / Sh. A ccre tion fro m d is cou nt to fa ir v alue(4) =+
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Accretive Valuation Metrics for GeoPark M ANAG E ME NT PR ESEN TAT I O N IMPLIED EXCHANGE PRICE PER SHARE ABOVE L3Y HIGH ($ / SHARE) EV / EBITDA 25A (x) EV / FLOWING BARREL 25A ($K / BOE) EV / 1P RESERVES ($ / BOE) EV / 2P RESERVES ($ / BOE) 4.1x 3.5x 3.0x IMPLIED MULTIPLES(1) Notes: (1) As of August 21 st, 2026; (2) Tender Offer price also at $12.22 / Share; (3) Considers Parex Resources Inc., and Gran Tierra Energy (Before Mau rel & Prom’s acquisition announcement, 04/08/2026); (4) Parex considers Frontera’s Financial & Operational Figures: i) EBITDA 2025A, ii) Production 2025, ii) 1P Reserves and, v) 2P Reserves Source: CapitalIQ, Public Information GeoPark Trading @$9.8/Sh.Share Price at Exchange @$12.22/Sh. (2 ) 11 $40.3 $34.7 $24.0 $16.5 $14.2 $9.0 $9.4 $8.1 $5.7 Colombian Peers Avg. (3 )(4 ) 25% Premium vs S P OT( 1) 26% Premium vs 3 0-Day V W AP ( 1) 23% Premium vs 6 0-Day V W AP ( 1) 25% Premium vs 9 0-Day V W AP ( 1) 12.2 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0 Price Exchange Price Per Share
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M ANAG E ME NT PR ESEN TAT I O N 12 Path to Closing CLOSING – CPP EFFECTIVENESS Specific Milestone SIGNING OF CPP ▪ Business Plan Approval(1) ▪ Execution of Complementary Agreements ▪ Operating Permits and Authorizations 1. Operational Take-over 2. Share Issuance: 42.1 MM shares to Gilinski Group TENDER OFFER – 90 DAYSINTERIM PERIOD – MAX 120 CALENDAR DA YS $100 MM Tender Offer $12.22 per share Up to ~8.2 MM Shares (1) Business Plan Scope: Preliminary approval of a short- and medium-term activity plan (Production, Capex, and others) ~56% ~44% Gilinski Group Other Shareholders Pr e-Te nde r Offe r Po st-Te nde r Offe r ~64% ~36% Gilinski Group Other Shareholders Assumes full subscription of the US$100MM Tender Offer
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M ANAG E ME NT PR ESEN TAT I O N 13 Relevant Risks & Mitigants RISKS MITIGATING FACTORS Operational Execution ✓ Development begins with reactivations, workovers and stabilization; larger facilities expansion and thermal recovery only after operational validation, helping stage execution risk as the development plan progresses Infrastructure & Energy Reliability ✓ Existing field infrastructure supports current operations; phased rehabilitation and debottlenecking as production grows; self-generation solutions from Y ear 2, with continued execution required as production scales Commercialization & Diluent Logistics ✓ Direct commercialization rights; CPP provides a framework to manage diluent procurement, transportation, reimbursement and production adjustments Contractual Protections and Exit Rights ✓ Defined remedies for material PDVSA/PPSA default or prolonged force majeure, with compensation protections and international arbitration, providing contractual recourse. Framework implementation is evolving and could still be subject to modifications Regulatory & Sanctions ✓ OFAC-compliant framework; economic rebalancing for legal/regulatory changes; defined termination rights, cure periods and international arbitration Governance ✓ Majority independent Board, related-party transaction protections, fairness opinion and tender offer mechanism Structured to mitigate execution risk through operating control, staged capital deployment and contractual protections, with residual risks to be actively managed by GeoPark over time
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In Summary: The Value Proposition M ANAG E ME NT PR ESEN TAT I O N 14 Transformational Scale and Long -term Sustainability ✓ Strategic early positioning in one of the world's largest hydrocarbon basins with a 25-year contract ✓ ~400 MMBBL of total net production to GeoPark: ~3x production scale by 2030E ✓ ~4x EBITDA growth Significant Upside Potential & Shareholder Optionality ✓ Creates a differentiated LatAm E&P platform combining stable cash flow generation, and material production growth, potential and upside from a Venezuela re-rating ✓ Provides shareholders with optionality to tender at $12.22 / Share (at the same 26% premium over VWAP(3)) Accretive Transaction with Immediate Impact to Shareholder Value ✓ Offer at ~5% discount to Bare’s fair value ✓ All-stock consideration at a 26% premium over VWAP(3) ✓ Total Accretion ~$160MM equivalent to $1.5 / Share Phased Capital Deployment ✓ ~0.5x Capex / EBITDA ratio(1)(2) through 2028 ✓ Robust cash generation supporting full deleveraging by 2030(1) Unique platform across three world -class basins, spanning conventional and unconventional resources across light, heavy and extr a-heavy crude Notes: (1) Brent Price: $75 / BBL; (2) Considers CAPEX and EBITDA for the period 2026 – 2028; (3) As of August 21 st, 2026