About Us


The Team

Jason D. Dean, CPL

Chief Executive Officer

Mr. Dean is a Certified Professional Landman with over 20 years’ experience in the Oil and Gas Industry.  Through the course of his career, he has worked with private and public landowners, as well as various oil and gas companies, to acquire more than 1.5 million acres of leasehold and mineral rights in various domestic basins.  Mr. Dean’s work experience includes extensive field-level negotiation with landowners, in-house operations with Anschutz Exploration Corporation and Newfield Exploration, and most recently serving as the Vice-President of Land for Cascade Petroleum – a private-equity backed oil and gas startup.  In 2014, Mr. Dean was recognized by the Oil and Gas Investor as one of the “Top 20 oil and gas professionals under the age of 40”.  As the Chief Executive Officer of Horizon Resources, LLC, Mr. Dean is responsible for the strategic and operational direction of the organization.

Robert E. Swartwout


Since 1998, Mr. Swartwout has been serving the Oil and Gas Industry as a Petroleum Geologist.  He began his career with Texaco (later merged with Chevron), where he gained extensive experience developing and implementing corporate exploration and acquisition strategies in multiple basins across the country.  Mr. Swartwout has been working the Rockies since 2006 and has led the strategic direction for the drilling of multiple discovery wells.  Additionally, he has led and managed the geotechnical evaluation and investment decisions for Texas American Resources and Patara Oil & Gas. Presently, Mr. Swartwout serves as President of Horizon Resources, LLC, where he has oversight of all geologic analysis and is integral to Horizon’s A&D efforts.

Michael Zoll

Chief Operating Officer

Mr. Zoll has spent his entire 16-year career working the Rockies as a Petroleum Engineer.  He has significant experience with field-level completions and operations (BJ Resources and Noble Energy), as well as senior management with Noble Energy, EOG Resources and Vitesse Energy.  As the Bakken Area Manager, Mr. Zoll led all development operations for EOG Resources in the Williston Basin – with an annual CapEx budget of over $1B.  Mr. Zoll has extensive experience evaluating oil and gas properties for acquisition/divestiture efforts in multiple basins.  As the Chief Operating Officer of Horizon Resources, LLC, Mr. Zoll is responsible for all engineering analysis and financial underwriting.

Jessica Keiko Dembeck, RPL

Land Manager

With over 11 years of in-house experience with multiple operators, Mrs. Dembeck has developed a deep knowledge of oil and gas land operations.  She has worked assets in multiple onshore basins and is well versed in complex land issues associated with fee, state, federal and Indian lands.  During her time with Anschutz Exploration Corporation and Newfield Exploration, Mrs. Dembeck managed field brokers for large acquisition and due diligence projects, cleared sites for drilling and negotiated countless transactions with landowners.  In her current role with Horizon Resources, LLC, Mrs. Dembeck is responsible for drafting and negotiating agreements with landowners, maintenance of all internal land records, as well as all division order calculation and administration.

Patrick J. Finley, CPL

Senior Landman

Mr. Finley is a Certified Professional Landman with over 12 years’ experience as a Landman.  He has experience with all facets of Land – from field level work to working as an in-house Landman with an Operator.  Through the years, Mr. Finley has built a strong foundation of title and curative skills by working complex mineral title and heirships in some of the most complex onshore basins.  Additionally, he has worked with mineral and surface owners to secure leases, purchase minerals/royalties and negotiate surface use agreements for oil and gas development.  Presently, Mr. Finley serves as Project Manager for both Horizon Resources, LLC and Horizon Operating, LLC and has oversight of all field acquisitions and title/curative efforts.

Randy Andersen

Engineering Manager

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