X0609 4 2026-06-03 0002029118 INFINITY NATURAL RESOURCES, INC. INR 0001377293 Quinn William J false C/O PEARL ENERGY INVESTMENTS 2100 MCKINNEY AVE., SUITE 1675 DALLAS TX 75201 true false true false false Class A Common Stock 2026-06-03 4 P false 10503 13.20 A 10503 D Class A Common Stock 28894732 I See footnote The reported securities are directly held by PEI INR Holdings, L.P. ("PEI INR Holdings"), Pearl Energy Investments, L.P. ("Pearl Investments"), Pearl Energy Investments III, L.P. ("Pearl III"), PEI Infinity-S, L.P. ("Pearl Infinity-S"), and PEI INR Co-Invest-B Corp. ("PEI INR Co-Invest" and, collectively, the "Pearl Funds"). Pearl Energy Investment III GP, L.P. ("Pearl III GP") is the general partner of PEI INR Holdings, Pearl III, Pearl Infinity-S and PEI INR A (as defined below). Pearl Energy Investment III UGP, LLC ("Pearl III UGP") is the general partner of Pearl III GP. Pearl Energy Investment GP, L.P. ("Pearl GP") is the general partner of Pearl Investments. Pearl Energy Investment UGP, LLC ("Pearl UGP") is the general partner of Pearl GP. PEI INR Holdings-A, L.P. ("PEI INR A") is the sole shareholder of PEI INR Co-Invest. The Pearl Funds are controlled by William J. Quinn, the founder and managing partner of Pearl Energy Investments. (Continued from footnote 2) The Reporting Persons disclaim beneficial ownership except to the extent of their pecuniary interest therein, and the filing of this Form 4 shall not be construed as an admission that such Reporting Person is the beneficial owner of any or all of the reported securities for the purposes of Section 16 or for any other purpose. /s/ William J. Quinn 2026-06-05