PHILADELPHIA, June 23, 2025 –WhiteHawk Income Corporation (together with WhiteHawk Energy, LLC and their respective subsidiaries, “WhiteHawk” or the “Company”) announced that a majority of the outstanding shares of common stock, par value $0.01666 per share (the “Shares”), of PHX Minerals Inc. (“PHX”) (NYSE: PHX) were validly tendered and the other conditions to the tender offer have been satisfied. WhiteHawk anticipates the acquisition of PHX will be consummated by WhiteHawk in accordance with, and subject to the terms of, the definitive agreement for the acquisition on Monday, June 23, 2025. Computershare Trust Company, N.A., the depositary for the tender offer, has indicated that as of 12:00 Midnight, Eastern time, at the end of June 20, 2025, approximately 28,806,761 total Shares, or 73.7% of the total Shares issued and outstanding, have been tendered into and not properly withdrawn from the tender offer. This figure does not include 50,315 Shares tendered pursuant to the guaranteed delivery procedures set forth in the Offer to Purchase. When the 50,315 Shares tendered pursuant to the guaranteed delivery procedures are included in the results, approximately 28,857,076 total Shares, or 73.8% of the total Shares issued and outstanding, will have been tendered into and not properly withdrawn from the tender offer.