ADAMS DIVERSIFIED EQUITY FUND, INC.

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Other Matters

The Fund will pay all costs of soliciting proxies for the Annual Meeting. To aid in the solicitation of proxies, the Fund has retained Morrow Sodali Fund Solutions, 430 Park Avenue, 14 th Floor, New York, NY 10022 (“MSFS”) for an estimated fee of about $400,000. The Fund may incur additional fees if it requests additional services. MSFS estimates that approximately fifty of its employees will assist in the Fund’s proxy solicitation. In addition, officers, regular employees, and other agents of the Fund may solicit proxies in person, by telephone, video conference, e-mail, text message, facsimile, personal calls or other electronic means. None of the officers or employees will be paid for these services. The Fund expects to request brokers and nominees who hold stock in their names to furnish this proxy material to their customers and to solicit proxies from them, and will reimburse such brokers and nominees for their out-of-pocket and reasonable clerical expenses in connection therewith. The Fund’s aggregate expenses in connection with its solicitation of proxies, excluding normal expenses related to a non-contested solicitation of proxies and excluding salaries and wages of our officers and regular employees, are expected to aggregate to approximately $542,000, of which approximately $214,000 has been spent to date.

Fund Complex

The Fund is part of Adams Funds (the “Fund Complex”), which is composed of the Fund and Adams Natural Resources Fund, Inc. (“PEO”), a closed-end investment company that is also traded on the New York Stock Exchange.