FIRM DESCRIPTION AND OVERVIEW CenterOak Adviser, L.P. (“Adviser” or “Firm”) is a Texas limited partnership that was formed in 2015. We provide investment management and other services solely to our affiliated private equity investment funds, CenterOak Equity Fund I, L.P. (“Fund I”), as well as CenterOak Equity Fund II, L.P. and CenterOak Equity Fund II-EF, L.P. (collectively, “Fund II”). Fund I and Fund II are Delaware limited partnerships that operate in the United States and are referred to in this brochure separately as a “Fund” and collectively as the “Funds.” Our clients are the Funds, not limited partners in the Funds. Our investment advice is provided to each Fund in accordance with the investment objectives, strategies, guidelines, restrictions, and limitations described in the applicable offering or governing documents for such Fund. The information in this brochure is qualified in its entirety by the information set forth in such documents. We are not a general or limited partner of any Fund. Rather, CenterOak GP I, Inc. (“GP I”) serves as the sole general partner of Fund I, and CenterOak GP II, Inc. (“GP II”) serves as the sole general partner of Fund II. GP I and GP II are Texas corporations that operate in the United States and are referred to in this brochure separately as a “General Partner” or “Relying Adviser” and collectively as the “General Partners” or “Relying Advisers.” Both General Partners rely on the Firm’s umbrella registration instead of separately registering as an investment adviser with the Securities and Exchange Commission (“SEC”) under the Investment Advisers Act of 1940, as amended (“Advisers Act”). See Item 10 below. Throughout this document, except as the context otherwise requires, the pronouns “we,” “us,” or “our” refer to the Adviser and each Relying Adviser; the conjunction “or” means “and / or”; and the word “include” or its derivatives means “include without limitation.” PRINCIPAL OWNERS Randall S. Fojtasek and his family trusts beneficially own 100% of the Adviser. Mr. Fojtasek is the sole shareholder of each Relying Adviser. TYPES OF ADVISORY SERVICES We provide investment management and other services solely to the Funds, which invest primarily in small to medium-sized middle market portfolio companies organized or

domiciled in the United States. Even though investment decisions with respect to a Fund are made by its General Partner, we provide investment advisory services with respect to each Fund in accordance with its investment objectives, policies, and guidelines set forth in such Fund’s offering and governing documents. As described in Item 10 below, the General Partners are subject to our supervision and control with respect to any investment advisory functions provided thereby. In general, we only provide investment advice with respect to investments (either directly or indirectly) in securities of portfolio companies, securities purchased in anticipation of investments in securities of portfolio companies, cash equivalents, and temporary investments. Without the prior approval of a majority in interest of the affected Fund’s investors, we are prohibited from causing the affected Fund to invest in certain categories of investments, including, among others, investments involving marketable securities of a portfolio company (unless such purchases are made with a view toward a negotiated transaction), investments in portfolio companies that are not organized or domiciled in the United States, and investments resulting in the direct ownership by the affected Fund of an interest in real property or mineral interests. Information about a Fund is set forth in its offering memorandum. Investment in a Fund does not create an advisory relationship between an investor in such Fund and us. See Item 8 below. INVESTMENT RESTRICTIONS We provide investment advice to each Fund in accordance with the investment objectives, policies, and guidelines set forth in the applicable offering or governing documents for such Fund, and not in accordance with the individual needs or objectives of any particular investor in such Fund. Investors generally are not permitted to impose restrictions or limitations on the management of any Fund. Notwithstanding the foregoing, a General Partner or Fund will from time to time enter into side letter agreements with one or more investors in the affected Fund that could alter, modify, or change certain terms of the interests held by those investors, including (without limitation) terms that impose additional investment restrictions or limitations. ASSETS UNDER MANAGEMENT As of December 31, 2023, we had nearly $1.5 billion of regulatory assets under management. All of these Fund assets are managed on a discretionary basis.