PTLO 8-K — Smart Summary

On May 20, 2026, Portillo's Inc. appointed Pamela Smith as Interim Chief Financial Officer, effective May 20, 2026, replacing Michelle Hook as both principal financial officer and principal accounting officer in connection with Ms. Hook's previously announced departure.

• Interim Chief Financial Officer Pamela F. Smith (via PF Smith Consulting LLC) — appointed to serve as principal financial officer and principal accounting officer, effective May 20, 2026; reporting to the Company's Chief Executive Officer; engagement pursuant to an independent contractor agreement expiring July 1, 2026 unless earlier terminated or extended; age 59; has served as Founder and CEO of a boutique advisory firm providing interim financial leadership and strategic planning support since 2017; previously served as Senior Vice President, Corporate Financial Planning & Analysis for Estée Lauder Companies from 2014 until 2016, and Senior Vice President/CFO, Financial Planning & Analysis at Redbox from 2013 through 2014

• Pamela F. Smith — compensated at a rate of $14,000 per week, prorated for partial weeks based on days worked, payable in arrears via ACH on bi-weekly Fridays; reimbursed for reasonable airfare, travel, lodging, and other business expenses consistent with Company policies; not eligible to participate in any Company employee benefit plans, bonus plans, or equity incentive compensation programs unless expressly approved in writing by the Compensation Committee; any incentive-based compensation subject to the Company's clawback and recoupment policies; upon termination, Company shall pay pro rata fees earned through the effective date of termination and no other fees shall be owed; engagement under independent contractor agreement dated May 20, 2026, expiring July 1, 2026; compensation reported on IRS Form 1099-NEC

• Chief Financial Officer / Principal Financial Officer / Principal Accounting Officer Michelle Hook — departed in connection with a previously announced departure; replaced by Pamela Smith in both principal financial officer and principal accounting officer roles; no further separation terms disclosed in this filing