Adams Natural Resources Fund, Inc. Declares Distribution, Payable June 1, 2021

Adams Natural Resources Fund, Inc. (the Fund) is a non-diversified investment company. The Fund is an internally managed closed-end fund specializing in energy and other natural resources stocks. The Fund's investment objectives are preservation of capital, the attainment of reasonable income from investments, and an opportunity for capital appreciation. The Fund invests at least 80% of its assets in petroleum or natural resources industries or industries connected with, serving and/or supplying the petroleum or natural resources industries. The Fund has broad flexibility to invest in stocks of varying capitalizations, and primarily invests in stocks found in the S&P 500 Energy and S&P 500 Materials sectors. The Fund invests at least 25% of its assets in petroleum and petroleum-related industries. The Fund may invest up to 25% of its assets in commodities related to petroleum, minerals and related products, including swaps. The Fund may invest up to 10% of its assets in real property.