UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 ~~OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934~~

~~For~~OR ~~the~~15d-16 ~~month~~UNDER ofTHE ~~December~~SECURITIES ~~2025~~EXCHANGE ACT OF 1934

For the month of January 2026

Commission File Number: 001-36298

GeoPark Limited

(Exact name of registrant as specified in its charter)

Calle 94 N° 11-30 8° piso

Bogota, Colombia

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:

Form 20-F

Form 40-F

GEOPARK LIMITED

TABLE OF CONTENTS

ITEM 1. Press Release dated ~~December~~January 921, ~~2025~~2026, titled “GeoPark ~~Comments~~Announces onFourth ~~Engagement~~Quarter ~~with~~2025 ~~Parex~~Operational ~~Resources~~Update”

Item 1

FOR IMMEDIATE DISTRIBUTION

GEOPARK ~~COMMENTS~~ANNOUNCES ONFOURTH ~~ENGAGEMENT~~QUARTER ~~WITH~~2025 ~~PAREX RESOURCES~~OPERATIONAL UPDATE

~~GEOPARK~~2025 ~~ENGAGED~~PRODUCTION ~~SUBSTANTIVELY~~EXCEEDS ~~AND PROVIDED AMPLE INCREMENTAL INFORMATION TO PAREX TO SUPPORT AN IMPROVED OFFER ABOVE $9.00 PER SHARE GEOPARK REMAINS CONFIDENT IN ITS STRATEGY AND FUTURE GROWTH PROSPECTS~~ GUIDANCE

~~Bogota,~~SUCCESSFUL ~~Colombia~~POLYMER –INJECTION ~~December~~PROJECT ~~9, 2025 - GeoPark~~LAUNCHED ~~Limited~~AT ~~(“GeoPark”~~LLANOS or the “Company”) (NYSE: GPRK), a leading independent energy company with over 20 years of successful operations across Latin America, today commented on Parex Resources Inc.’s ("Parex") announcement that it has halted discussions with GeoPark regarding a potential transaction:34

·Bogota, ~~GeoPark’s~~Colombia ~~Board~~– ~~and~~January ~~management~~21, ~~team~~2026 ~~have~~- ~~always~~GeoPark Limited ~~been~~(“GeoPark” ~~open~~or tothe ~~entering~~“Company”) ~~into~~(NYSE: ~~transactions~~GPRK), ~~that~~a ~~maximize~~leading ~~value~~independent ~~for~~energy ~~our~~company ~~shareholders.~~with Asover ~~such,~~20 weyears ~~entered~~of successful ~~into~~operations ~~discussions~~across ~~with~~Latin ~~Parex in good faith~~America, ~~aiming~~announces toits ~~negotiate~~operational aupdate ~~mutually~~for ~~agreeable transaction. From~~ the ~~outset~~three-month ofperiod ~~negotiations,~~ended weDecember ~~have communicated our belief that Parex’s September 4~~31, 2025, ~~offer of $9~~(“4Q2025”).~~00 per share undervalues GeoPark.~~

·GeoPark ~~Over~~closed ~~six~~2025 ~~weeks~~delivering offull-year ~~extensive~~production that ~~Special~~surpassed ~~Committee~~the ~~and~~upper ~~Board~~end ~~sessions~~of ~~and numerous meetings between our respective senior management teams, we provided Parex and~~ its ~~advisors~~yearly ~~access~~guidance ~~to substantial and comprehensive~~range, ~~non-public~~supported ~~technical~~by ~~and~~strong ~~financial~~execution ~~information~~across ~~relevant~~its tocore ~~our~~assets ~~ongoing~~in ~~operations~~Colombia and ~~future~~Argentina. 2025 ~~upside~~also ~~potential~~marked –the ~~all~~successful initiation of ~~which~~a ispolymer ~~clearly~~injection ~~incremental~~project toin the ~~facts~~Llanos ~~upon~~34 ~~which~~Block ~~Parex’s~~(GeoPark ~~original~~operated, ~~offer~~45% ~~was~~working ~~founded. Importantly~~interest (“WI”)), ~~Parex’s~~strengthening $9secondary recovery performance.00 ~~per~~In ~~share~~Argentina, ~~offer~~integration ~~ascribed~~of nothe ~~value~~newly toacquired ~~GeoPark’s~~assets ~~transformative~~in Vaca Muerta was ~~acquisition~~completed ~~which~~safely ~~was~~and ~~announced~~ahead onof ~~September 25~~plan, ~~2025.~~contributing ~~The~~to ~~Board~~early ~~has~~production ~~communicated that any credible or constructive engagement going forward would require a revised proposal beginning in the double-digits~~growth.

~~This~~Oil ~~incremental~~and ~~information~~Gas ~~includes:~~Production and Operations

· ~~Certified~~Annual ~~2025~~average ~~reserves~~oil ~~report~~and ~~showing~~gas ~~total~~production 2Pof ~~reserves~~28,233 ~~increased~~boepd, ~~38%~~above ~~year-over-year~~the toupper ~~121~~range ~~mmboe~~of ~~(including~~the an2025 ~~increase~~guidance inof ~~Colombia~~26,000 as– ~~well~~28,000 asboepd. ~~the~~Outperformance ~~addition~~was ofdriven ~~the~~by ~~Argentinian~~solid ~~asset),~~base ~~with~~delivery ~~reserve~~and ~~replacement~~secondary ~~ratios~~recovery ~~for~~from 1Pthe Llanos 34 Block, 2Pstable ~~and~~production 3Pfrom ~~all~~the ~~exceeding~~CPO-5 ~~100~~Block (GeoPark non-operated, 30% –WI) ~~underscoring~~and ~~GeoPark’s~~successful ~~ability~~drilling toresults ~~fully~~in ~~replace~~the ~~production~~Llanos ~~and~~123 ~~continue~~Block ~~building~~(GeoPark ~~long-term~~operated, ~~asset~~50% ~~value.~~WI)

-· ~~This~~4Q2025 ~~represents~~average aoil ~~48%~~and ~~increase~~gas inproduction 2Pof ~~reserves~~28,351 ~~versus~~boepd, ~~the~~1% 82higher ~~mmboe~~than ~~available~~3Q2025, atreflecting ~~the~~stable ~~time~~delivery offrom ~~Parex’s~~core ~~original~~operated ~~offer~~and ~~(2024~~non-operated 2Passets, ~~reserves~~as ofwell ~~87.6~~as ~~mmboe,~~fresh ~~net~~production ofcoming ~~previously~~online ~~announced~~in ~~2025~~our ~~divestments)~~Vaca Muerta assets

· ~~Data~~6 ~~supporting~~rigs anin ~~additional~~operation ~~~18~~(3 ~~mmboe~~drilling ~~of risked reserves across the Llanos 34~~ and ~~Llanos~~3 ~~123 blocks in Colombia (pending certification~~workover), ~~further~~at ~~enhancing~~2025 ~~GeoPark’s near~~year-~~term production and value outlook.~~end

· A16 ~~reserves~~wells ~~report~~drilled ~~certifying~~and acompleted ~~22% increase (206 million barrels)~~ in ~~2P OOIP in the Llanos 34 block, confirming a larger resource base and strengthening the asset’s long-term upside.~~2025

· ~~Detailed~~Manati ~~information~~gas ~~demonstrating~~field ~~that~~in ~~the~~Brazil: ~~Vaca~~The ~~Muerta~~transfer ~~transaction~~was ~~materially~~completed ~~strengthens~~on ~~GeoPark’s~~December ~~asset~~12, ~~base~~2025, and ~~growth~~as ~~trajectory~~a result, ~~adding~~GeoPark ~~~37~~no ~~mmboe~~longer ofholds 2Pany ~~reserves,~~working ~~extending~~interest in the ~~Company’s~~Manati 2Pgas ~~reserve~~field. ~~life~~The ~~index~~remaining administrative steps to ~~12.7~~closing ~~years.~~are subject to the finalization of customary amendments to consortium contracts, which are expected to be completed during 1Q2026

In· anEspejo ~~effort~~and toPerico ~~ensure~~Blocks ~~that~~in Ecuador: GeoPark ~~shareholders~~divested ~~also~~these ~~had the latest information~~blocks, and the ~~Company~~closing ~~released~~of ~~its~~the ~~2025~~transaction ~~Reserves~~occurred ~~Report~~on ~~and~~December ~~2026-2028 Guidance~~9, ~~publicly.~~2025

~~Background~~Llanos ~~and~~34 ~~Engagement~~Block: ~~with~~Successful ~~Parex~~Initiation of the Polymer Injection Project

As· ~~announced~~4Q2025 onaverage ~~October~~production ~~29,~~of ~~2025~~16,137 ~~the~~boepd ~~GeoPark~~net ~~Board unanimously rejected an unsolicited~~(35,859 ~~non-binding~~boepd ~~proposal from Parex to acquire GeoPark in an all-cash transaction for $9.00 per share~~gross), ~~received~~ onreflecting ~~September~~a 4,5% ~~2025.~~decline ~~Parex’s~~compared ~~initial~~to ~~offer was submitted mere weeks before GeoPark’s transformative transaction in Vaca Muerta~~3Q2025, ~~which~~consistent ~~materially~~with ~~enhanced~~the ~~GeoPark’s~~natural ~~asset~~decline ~~base~~rate and ~~growth~~driven ~~trajectory.~~by ~~After~~operational ~~engaging in a comprehensive evaluation process~~events, ~~the~~including ~~Board~~scheduled ~~concluded~~maintenance ~~the proposal undervalued the Company~~ and ~~was~~water ~~not~~quality ~~in the best interests of GeoPark or its shareholders. GeoPark’s discussions with its shareholders have supported this view.~~constraints

~~Following~~· ~~the~~Waterflooding ~~completion~~projects ofcontinued ~~GeoPark’s~~to ~~transformative transaction~~deliver instrong ~~Vaca~~results ~~Muerta~~in ~~and the public reiteration of Parex’s $9.00 per share offer~~4Q2025, ~~GeoPark’s~~contributing ~~Board~~approximately ~~formed a Special Committee of independent directors to evaluate any potential revised offer from Parex and other value-maximizing alternatives for the Company. In addition~~6,370 ~~the~~boepd ~~GeoPark~~gross ~~Board authorized the Company to move expeditiously to execute a non-disclosure agreement and establish a virtual data room~~ (~~VDR)~~18% ~~through~~of ~~which~~gross it provided Parex with access to extensive technical and financial information relevant to GeoPark’s operations and growth prospects, which was clearly incremental to the facts upon which Parex’s September 4 offer was founded.production)

~~Through~~· ~~the~~Workover ~~course~~campaign offocused ~~GeoPark’s~~on ~~engagement with~~28 ~~Parex~~interventions, ~~Parex~~delivering ~~communicated that it is only interested in GeoPark’s Colombian assets given its limited familiarity with unconventional resource development~~3,230 ~~including~~boepd ingross ~~Argentina,~~ and ~~its~~reducing ~~reservations~~water ~~more~~production ~~broadly~~by ~~regarding~~25,200 ~~operating~~bwpd in ~~Argentina based on past experience. GeoPark believes these factors constrain Parex’s ability to reflect the full value of the Company’s diversified portfolio in any revised proposal.~~4Q2025

~~GeoPark~~· ~~subsequently~~Polymer ~~was~~Injection ~~disappointed~~Project tostarted ~~learn from Parex’s CEO~~ on December 126, 2025 ~~that Parex did not intend to increase its offer to acquire GeoPark for more than $9.00 per share. The GeoPark Board~~, ~~consistent~~ with ~~its~~two ~~desire~~injector towells ~~maximize~~in ~~value for shareholders and seriously explore all options to do so, opened a direct line of communication with~~ the ~~Parex~~Tigui ~~Board.~~Area

~~The GeoPark Board urged the Parex Board to reconsider its original offer and re~~CPO-~~engage~~5 inBlock: ~~negotiations~~Production ~~with~~Impacted aby ~~view~~Blockades ~~to reaching an outcome that is in the best interests of both companies’ shareholders.~~

~~Outlook~~· 4Q2025 average production of 6,153 boepd net (20,511 boepd gross), a 13% decrease compared to 3Q2025

~~GeoParks~~· ~~expects~~Production ~~Adjusted~~was ~~EBITDA~~negatively toimpacted ~~more than double~~ by ~~2028,~~blockades ~~driving~~that aoccurred ~~larger~~from ~~enterprise~~October ~~value~~27 ~~supported by increased cash flow, lower leverage, and a broader, more diversified asset base. GeoPark will continue~~ to ~~focus~~November ~~on its operational strengths~~7, ~~financial~~after ~~discipline,~~which ~~and~~production ~~portfolio of high-quality assets, including executing its two-pronged strategy in Colombia and Argentina:~~normalized

· Maximizing Core Production and Cash Generation in Colombia: The Company is focused on sustaining and improving the performance of its flagship Llanos 34 block and other key operated and non-operated assets. Following a strong 2025 and positive developments since GeoPark’s 2025 Investor Day, Colombian production has reached a positive inflection point earlier than expected. Production is set to grow, supported by disciplined development, base optimization, enhanced recovery techniques, and strong results from recent wells. Colombia will continue to provide a solid foundation to generate sustainable free cash flow, balance sheet strength, and shareholder returns.1

~~· Returning to Growth with Vaca Muerta,~~ Argentina: ~~With~~Operational ~~the~~Transition ~~successful~~Completed with ~~integration~~Early ofProduction the Loma Jarillosa Este and Puesto Silva Oeste blocks, GeoPark is confident it can unlock material long-term growth from its position in the unconventional Neuquén Basin. The team is focusing on accelerating drilling activity to deliver a step-change in production and cash flow. Vaca Muerta is expected to become a core growth platform in GeoPark’s portfolio by year-end 2028.Uplift

~~GeoPark~~· ~~remains~~Successful ~~open~~takeover toof ~~considering~~the ~~offers~~operations ~~that appropriately~~of ~~value~~the Loma Jarillosa Este and Puesto Silva Oeste blocks on October 16, 2025, completing the ~~Company.~~transition safely and without incidents

~~Advisors~~· 4Q2025 average production of 1,234 boepd gross, driven by the Loma Jarillosa Este Block (GeoPark operated, 100% WI)

~~Goldman~~· ~~Sachs~~The &Company ~~Co.~~established ~~LLC~~its ~~and~~operational ~~J.P.~~office ~~Morgan~~in ~~Securities LLC~~Neuquén ~~are serving as financial advisors~~City, ~~Davis~~providing ~~Polk~~a &local ~~Wardwell~~execution ~~LLP~~hub and ~~Conyers~~strengthening ~~Dill~~coordination &with ~~Pearman~~contractors, ~~Limited are serving as legal counsel~~regulators, ~~Okapi~~ ~~Partners~~and ~~LLC~~stakeholders. isApproximately ~~serving~~90% asof ~~proxy~~execution ~~and~~roles ~~information~~are ~~agent,~~currently ~~and~~held ~~FGS~~by ~~Global~~local isprofessionals ~~serving~~with asextensive ~~strategic~~operating ~~communications~~experience ~~advisor~~in toVaca ~~GeoPark.~~Muerta

Loma Jarillosa Este Block:

Successfully completed run-in-hole operations for tubing and artificial lift systems on all three wells at Pad 1020, resulting in an average incremental production increase of approximately 25%

Advanced the preparation of the Loma Jarillosa Environmental Impact Assessment (“EIA”) and other key regulatory permits

Engaged with neighboring operators to identify and advance potential operational synergies, aimed at improving efficiency and optimizing shared infrastructure and services

Llanos Exploration: Strong Appraisal Results in Llanos 123

4Q2025 average production of 2,739 boepd net (5,477 boepd gross), 26% higher than 3Q2025, mainly driven by appraisal results from the Llanos 123 Block (GeoPark operated, 50% WI):

Toritos Norte-3: Producing 445 bopd from the Barco Formation, with 58% water cut

Toritos Este-1: Producing 470 bopd from the Barco Formation, with 17% water cut

Currucutú-2: Put on production on December 20, 2025, delivering 710 bopd from the Barco Formation, with 1% water cut

Bisbita Oeste-1: Currently injecting 1,300 bwpd, aligned with initial simulation stage

Llanos 104 Block (GeoPark operated, 50% WI):

Vencejo Norte-1: Exploratory well targeting the Mirador Formation was spudded on December 24 and reached total depth at 6,600 ft on January 1. Pressure data and logs confirmed a water-bearing reservoir, and the well was abandoned

Putumayo: Production Campaign Underway

Platanillo Block (GeoPark operated, 100% WI)¹:

The field reopened on October 18, 2025, delivering average production of 601 bopd gross during 4Q2025. The field is currently producing 900 bopd gross

Upcoming Catalysts 1Q2026

Drilling 5-6 gross wells in Colombia, targeting conventional development projects

Key projects include:

Llanos 34 Block: Drilling 4-5 development wells focused on the Jacana Area. 2 injection wells remain active under the Polymer Injection Project in the Tigui area

Llanos 123 Block: Drilling 2 development wells

Loma Jarillosa Este Block: Closing of rig and services contracts, with rig mobilization expected in March and drilling of three stand-alone wells during 2Q2026 (two already drilled in the 5-well PAD). This phase precedes the start of factory drilling, expected in 4Q2026. Completion of the battery upgrade contracting is also planned

Update on Board Composition

Mr. Somit Varma has stepped down from the Board of Directors of GeoPark Ltd. for personal reasons, effective January 19, 2026.

Mr. Varma joined the Board in 2020 and brought to GeoPark more than three decades of global experience in oil and gas, mining, and infrastructure investing. During his tenure, he played an active role across key Board committees, including those focused on strategy, risk, audit, and corporate governance.

The Board of Directors is grateful for Mr. Varma’s commitment, judgment, and service to GeoPark and wishes him well in his future endeavors. The Board will review its succession options and committee composition in due course.

¹ GeoPark Colombia S.A.S. holds 100% ownership of Amerisur Exploración Colombia Limited, which is the official contractor and operator of the block.

Breakdown of Quarterly Production by Country

The following table shows production figures for 4Q2025, as compared to 4Q2024:

	4Q2025			4Q2024
	Total (boepd)	Oil (bopd)^a	Gas (mcfpd)	Total (boepd)	% Change
Colombia	25,629	25,629	-	29,740	-14%
Argentina	1,234	1,138	580	-	-
Ecuador	650	650	-	1,749	-63%
Brazil	837	13	4,944	-	-
Total	28,351	27,431	5,524	31,489	-10%

Includes royalties and other economic rights paid in kind in Colombia for approximately 3,890 bopd in 4Q2025. No royalties were paid in kind in Ecuador or Brazil. Production in Ecuador is reported before the Government’s production share of approximately 157 bopd.

Quarterly Production

(boepd)	4Q2025	3Q2025	2Q2025	1Q2025	4Q2024
Colombia	25,629	26,208	25,868	27,610	29,740
Ecuador	650	926	1,281	1,466	1,749
Brazil	837	1,002	231	-	-
Argentina	1,234	-	-	-	-
Total^a	28,351	28,136	27,380	29,075	31,489
Oil	27,431	27,149	27,151	28,971	31,354
Gas	921	987	228	104	135

In Colombia, production includes royalties paid in kind, and in Ecuador it is shown before the Government’s production share.

Reporting Date for 4Q2025 Results Release, Conference Call and Webcast

GeoPark will report its 4Q2025 and full-year 2025 financial results on Wednesday, February 25, 2026, after market close.

GeoPark management will host a conference call on Thursday, February 26, 2026, at 10:00 am (Eastern Standard Time) to discuss the 4Q2025 and full-year 2025 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/562628801

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=48643

Passcode: 459798

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.

For further information, please contact:

INVESTORS: Maria Catalina Escobar Shareholder Value and Capital Markets Director mescobar@geo-park.com Miguel Bello Investor Relations Officer mbello@geo-park.com Maria Alejandra Velez Investor Relations Leader mvelez@geo-park.com

Maria Catalina Escobar Shareholder Value and Capital Markets Director mescobar@geo-park.com Miguel Bello Investor Relations Officer mbello@geo-park.com Maria Alejandra Velez Investor Relations Leader mvelez@geo-park.com

MEDIA:

~~Kelsey Markovich/Kim Textor FGS Global~~ Communications Department ~~GeoPark@fgsglobal.com~~ communications@geo-park.com

NOTICE

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

Rounding amounts and percentages: Certain amounts and percentages included in this press release have been rounded for ease of presentation. Percentages included in this press release have not in all cases been calculated on the basis of such rounded amounts, but on the basis of such amounts prior to rounding. For this reason, certain percentages in this press release may vary from those obtained by performing the same calculations on the basis of the amounts in the financial statements. Similarly, certain other amounts included in this press release may not sum due to rounding.

CAUTIONARY STATEMENTS RELEVANT TO FORWARD-LOOKING INFORMATION

This press release contains 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, drilling campaign, production guidance, ~~capital~~closing ~~expenditures,~~of acquisition and ~~projected~~divestment ~~Adjusted~~transactions ~~EBITDA, ROACE, net debt to EBITDA,~~ and ~~net debt to EBITDA leverage ratio~~production consolidation. 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 release 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.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

GeoPark Limited


By:	/s/ Jaime Caballero Uribe
	Name:	Jaime Caballero Uribe
	Title:	Chief Financial Officer

Date: ~~December~~January 922, ~~2025~~2026

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