X0306 4 2023-01-31 0 0001559432 TXO Energy Partners, L.P. TXO 0001182691 KING J LUTHER JR 400 WEST 7TH STREET FORT WORTH TX 76102 1 0 1 1 See Remarks Common Units 2023-01-31 4 C 0 1339474 A 3295474 I By MorningStar Partners II, L.P. Common Units 2023-01-31 4 A 0 3000 0.00 A 3000 D Series 5 Preferred Units 2023-01-31 4 C 0 53.3158 0.00 D 2024-10-15 Common Units 273676 0 D Series 5 Preferred Units 2023-01-31 4 C 0 207.6316 0.00 D 2024-10-15 Common Units 1065798 0 I See footnotes Immediately prior to the closing of the Issuer's initial public offering, the Issuer's series 5 preferred units automatically converted into common units of the Issuer. Reflects securities acquired in a transaction exempt from reporting pursuant to Rule 16a-13. Reflects the number of units beneficially held following a 1-for-25.33 reverse unit split effected by the Issuer on January 31, 2023, which was exempt from reporting pursuant to Rule 16a-9. Reflects phantom units. Each phantom unit is the economic equivalent of one common unit of the Issuer and will be settled in common units upon vesting. The phantom units will vest on January 31, 2024. The securities reported include (i) 507,909 common units underlying series 5 preferred units held by LKCM Investment Partnership, L.P. and (ii) 557,889 common units underlying series 5 preferred units held by PDLP Morningstar, LLC. LKCM Investment Partnership GP, LLC is the general partner of LKCM Investment Partnership, L.P. LKCM Private Discipline Management, L.P. is the sole holder of management shares of LKCM Private Discipline Master Fund, SPC. PDLP Morningstar, LLC is a wholly owned subsidiary of LKCM Private Discipline Master Fund, SPC. Luther King Capital Management Corporation serves as the investment adviser to each of LKCM Investment Partnership, L.P. and LKCM Private Discipline Master Fund, SPC. J. Luther King, Jr. serves as the President of Luther King Capital Management Corporation. Luther King Capital Management Corportion has voting and investment power over the securities beneficially owned by each of LKCM Investment Partnership GP, LLC and LKCM Private Discipline Management L.P. Accordingly, each of J. Luther King and Luther King Capital Management Corporation may be deemed to share beneficial ownership of the Series 5 Preferred Units held by each of LKCM Investment Partnership, L.P. and PDLP Morningstar, LLC, but each disclaims beneficial ownership of such common units except to the extent of their pecuniary interest therein. The Reporting Person is a Director of TXO Energy GP, LLC, the general partner of the Issuer (the "General Partner"). The Issuer is managed by the directors and executive officers of the General Partner. /s/ Brent W. Clum, Attorney-in-fact 2023-02-02