FIRM DESCRIPTION EnerVest Investment Services, L.L.C., a Delaware limited liability company and private investment management firm (“EnerVest,” “we,” “us” or “our”), was organized in 2011 and is an affiliate of EnerVest, Ltd. EnerVest, Ltd., a Texas limited partnership, was founded in 1992 and manages, sponsors and operates various affiliated private pooled investment vehicles (collectively, the “Funds”) with respect to direct and/or indirect investments in oil and natural gas properties, including, without limitation, working interests, net profits interests and related assets. EnerVest, Ltd. and/or certain of its subsidiaries and/or affiliates act as general partners or managers, as applicable, of each of the Funds and we do not act as general partner or manager of any of the Funds. Except as the context otherwise requires, any reference in this brochure to “EnerVest,” “we,” “us,” or “our” may be considered to include, as applicable, EnerVest Investment Services, L.L.C., EnerVest, Ltd. and/or their affiliates. We provide investment management and supervisory services to the Funds in accordance with the investment objectives and strategies set forth in the applicable governing documents. The information in this brochure is qualified in its entirety by the information set forth in the applicable governing documents of each Fund. EnerVest, Ltd. and certain subsidiaries and/or affiliates thereof that act as general partners or managers, as applicable, of the Funds rely on our investment adviser registration instead of separately registering as an investment adviser under the Investment Advisers Act of 1940, as amended (the “Advisers Act”). PRINCIPAL OWNERS EnerVest Holding, L.P. is the sole member of EnerVest Investment Services, L.L.C. EnerVest Operating, L.L.C. is the general partner of EnerVest Holding, L.P. EnerVest Operating, L.L.C. is owned and controlled by EnerVest, Ltd. For information regarding the officers and indirect owners of EnerVest Investment Services, L.L.C., see Schedule A and Schedule B of Part 1 of Form ADV. TYPES OF SERVICES We provide or will provide investment management and supervisory services to the Funds, which invest (either directly or indirectly) in oil and natural gas properties, including, without limitation, working interests, net profits interests and related assets, such as the publicly traded equity securities of MGY that are held by the Fund XIV Vehicles (as defined below). Certain of the Funds also engage in over-the-counter derivative transactions for commodity price risk management as well as transact in the publicly traded equity securities of oil and natural gas companies. Even though investment decisions with respect to the Funds are ultimately made by their respective general partners or managers (including EnerVest, Ltd. and certain of its subsidiaries and/or affiliates), we provide investment management and supervisory services with respect to

each Fund in accordance with the investment objectives, policies, guidelines and limitations set forth in the applicable governing documents. We only provide services to the Funds with respect to energy and energy-related investments (either directly or indirectly through one or more vehicles or subsidiaries). See Item 8 below. EnerVest, Ltd. or an affiliate has formed and may in the future form certain Funds that are co-investment vehicles designed to participate in a particular investment or opportunity alongside other Funds. We provide investment management and supervisory services solely with respect to the Funds and not to any investors in the Funds, and no investor or prospective investor should look to us or our affiliates for advice regarding any of its own investment decisions, including any decision to invest in the Funds. INVESTMENT RESTRICTIONS Investment management and supervisory services with respect to each Fund are provided in accordance with the investment objectives, policies, guidelines, limitations and strategies set forth in the applicable governing documents, and not in accordance with the individual needs or objectives of any particular investor in that Fund. Investors generally are not permitted to impose restrictions or limitations on the management of the Funds. REGULATORY ASSETS UNDER MANAGEMENT As of December 31, 2023, we had approximately $1,519,794,079 in regulatory assets under management (as also reflected in Item 5.F(2) of Part 1 of our Form ADV), which were all managed on a discretionary basis. For purposes of the foregoing calculation, with respect to the BEP Funds (as defined below), the calculation of our regulatory assets under management is based on the unaudited gross asset values of the BEP Funds as of December 31, 2023. As of the date of this brochure, other than with respect to EnerVest Energy Institutional Fund XIV-A, L.P., EnerVest Energy Institutional Fund XIV-C, L.P., EnerVest Energy Institutional Fund XIV-C-AIV, L.P., EnerVest Energy Institutional Fund XIV-2A, L.P., EnerVest Energy Institutional Fund XIV-3A, L.P. (collectively, the “Fund XIV Vehicles”), BEP Legacy A, LLC, BEP Legacy C, LLC, BEP Legacy 1C, LLC, and BEP Legacy 2A, LLC (collectively, the “BEP Funds”), any of the other Funds (collectively or individually, the “3(c)(9) Funds”) currently relies upon and is believed to qualify for, to the extent applicable, the exclusions from the definition of “investment company” set forth in each of Sections 3(c)(7) and 3(c)(9) of the Investment Company Act of 1940, as amended (the “Company Act”) (among any other applicable exemptions or exclusions). Because such 3(c)(9) Funds qualify for and rely upon one or more exclusions from registration under the Company Act other than (and in addition to) Section 3(c)(7) or Section 3(c)(1), none of those 3(c)(9) Funds currently is a “private fund” for purposes of the Advisers Act including, without limitation, Form ADV and Form PF.