SCHEDULE 13D/A 0001726173 XXXXXXXX LIVE 3 Common Stock 01/12/2026 true 0000807882 466367109 JACK IN THE BOX INC

9357 SPECTRUM CENTER BLVD SAN DIEGO CA 92123-1516

Sardar Biglari 210-344-3400 Biglari Holdings Inc. 19100 Ridgewood Pkwy, Suite 1200 San Antonio TX 78259 Michael Neidell, Esq. 212-451-2300 Olshan Frome Wolosky LLP 1325 Avenue of the Americas New York NY 10019 0001726173 N Biglari Holdings Inc. OO N IN 200617.00 0.00 200617.00 0.00 200617.00 N 1.1 CO 0001334426 N LION FUND, L.P. WC N DE 542700.00 0.00 542700.00 0.00 542700.00 N 2.9 PN 0001580602 N LION FUND II, L.P. WC N DE 1140952.00 0.00 1140952.00 0.00 1140952.00 N 6.0 PN Y Southern Pioneer Property & Casualty Insurance Company WC N AR 106317.00 0.00 106317.00 0.00 106317.00 N 0.6 IC Y First Guard Insurance Company WC N AZ 21900.00 0.00 21900.00 0.00 21900.00 N 0.1 IC 0002035328 N Biglari Reinsurance Ltd. WC OO N D0 148217.00 0.00 148217.00 0.00 148217.00 N 0.8 CO 0002034968 N Biglari Insurance Group Inc. OO N DE 148217.00 0.00 148217.00 0.00 148217.00 N 0.8 CO Y Western Sizzlin Corporation WC N DE 52400.00 0.00 52400.00 0.00 52400.00 N 0.3 CO 0001334429 N BIGLARI CAPITAL CORP. AF N TX 1683652.00 0.00 1683652.00 0.00 1683652.00 N 8.9 OO 0001334430 N BIGLARI, SARDAR AF N X1 1884269.00 0.00 1884269.00 0.00 1884269.00 N 9.98 IN Common Stock JACK IN THE BOX INC 9357 SPECTRUM CENTER BLVD SAN DIEGO CA 92123-1516 Item 4 is hereby amended to add the following: The Reporting Persons have withdrawn their nomination of Douglas Thompson as a nominee at the Annual Meeting due to his appointment as Chief Operations Officer of CAVA. The Reporting Persons intend to continue to engage in discussions with the Issuer regarding the composition of the Board, including with respect to an alternate, qualified candidate proposed by the Reporting Persons, and, depending on the outcome thereof, may determine to engage in a withhold campaign against one or more directors of the Issuer at the Annual Meeting. Item 6 is hereby amended to add the following: The disclosure in Item 4 is hereby incorporated by reference herein. On January 14, 2026, the Reporting Persons terminated the Joint Filing and Solicitation Agreement and entered into a new Joint Filing Agreement in which the Reporting Persons agreed to the joint filing on behalf of each of them of statements on Schedule 13D with respect to the securities of the Issuer to the extent required by applicable law. A copy of the Joint Filing Agreement is attached as Exhibit 99.1 hereto and is incorporated herein by reference. Item 7 is hereby amended to add the following exhibit: 99.1 - Joint Filing Agreement by and among the Reporting Persons, dated January 14, 2026. Biglari Holdings Inc. /s/ Sardar Biglari 01/14/2026 LION FUND, L.P. /s/ Sardar Biglari 01/14/2026 LION FUND II, L.P. /s/ Sardar Biglari 01/14/2026 Southern Pioneer Property & Casualty Insurance Company /s/ Sardar Biglari 01/14/2026 First Guard Insurance Company /s/ Sardar Biglari 01/14/2026 Biglari Reinsurance Ltd. /s/ Sardar Biglari 01/14/2026 Biglari Insurance Group Inc. /s/ Sardar Biglari 01/14/2026 Western Sizzlin Corporation /s/ Sardar Biglari 01/14/2026 BIGLARI CAPITAL CORP. /s/ Sardar Biglari 01/14/2026 BIGLARI, SARDAR /s/ Sardar Biglari 01/14/2026