El Pollo Loco Holdings, Inc. 10-Q

Item 5. Other Information. Insider Trading Arrangements No officers, as defined in Rule 16a-1(f), or directors adopted or terminated a “Rule 10b5-1 trading arrangement ” or a “non-Rule 10b5-1 trading arrangement ,” as defined in Regulation S-K Item 408, during the last fiscal quarter. 38 Table of Contents Item 6. Exhibits. (a) Exhibit Index: ​ ​ ​ ​ ​ Incorporated by Reference Exhibit Number ​ Description ​ Form ​ Exhibit ​ Filing Date 3.1 ​ Amended and Restated Certificate of Incorporation of El Pollo Loco Holdings, Inc. ​ 8-K ​ 3.1 ​ 6/5/2025 3.2 ​ Certificate of Designations of Series A Preferred Stock of El Pollo Loco Holdings, Inc., as filed with the Secretary of State of the State of Delaware on August 9, 2023 ​ 8-K ​ 3.1 ​ 8/9/2023 3.3 ​ Amended and Restated By-Laws of El Pollo Loco Holdings, Inc. ​ 8-K ​ 3.1 ​ 2/2/2024 31.1* ​ Rule 13a–14(a)/15d–14(a) Certification of Principal Executive Officer ​ ​ ​ ​ ​ ​ 31.2* ​ Rule 13a–14(a)/15d–14(a) Certification of Principal Financial Officer ​ ​ ​ ​ ​ ​ 32.1** ​ Section 1350 Certification of Principal Executive Officer and Principal Financial Officer ​ ​ ​ ​ ​ ​ 101.INS* ​ Inline XBRL Instance Document – the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document ​ ​ ​ ​ ​ ​ 101.SCH* ​ Inline XBRL Taxonomy Extension Schema Document ​ ​ ​ ​ ​ ​ 101.CAL* ​ Inline XBRL Taxonomy Extension Calculation Linkbase Document ​ ​ ​ ​ ​ ​ 101.DEF* ​ Inline XBRL Taxonomy Extension Definition Linkbase Document ​ ​ ​ ​ ​ ​ 101.LAB* ​ Inline XBRL Taxonomy Extension Label Linkbase Document ​ ​ ​ ​ ​ ​ 101.PRE* ​ Inline XBRL Taxonomy Extension Presentation Linkbase Document ​ ​ ​ ​ ​ ​ 104* ​ Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101) ​ ​ ​ ​ ​ ​ ​ * Filed herewith. ** Furnished herewith. 39 Table of Contents SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. ​ ​ ​ ​ ​ EL POLLO LOCO HOLDINGS, INC. ​ ​ ​ Date: May 8, 2026 ​ By: /s/ ELIZABETH WILLIAMS ​ ​ Elizabeth Williams ​ ​ Chief Executive Officer ​ ​ (Principal Executive Officer) Date: May 8, 2026 ​ ​ ​ ​ ​ By: /s/ IRA FILS ​ ​ Ira Fils ​ ​ Chief Financial Officer ​ ​ (Principal Financial and Accounting Officer) ​ ​ ​ 40