# EDGAR Filing Document

**Accession Number:** 0001871509
**File Stem:** 0001621955-26-000004
**Filing Date:** 2026-2
**Character Count:** 5994
**Document Hash:** 9be962769fbff9d4d3f4fb9c9c51f3e4
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001621955-26-000004.hdr.sgml**: 20260224

**ACCESSION NUMBER**: 0001621955-26-000004

**CONFORMED SUBMISSION TYPE**: 3

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20260223

**FILED AS OF DATE**: 20260224

**DATE AS OF CHANGE**: 20260224

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Patterson Brett
- **CENTRAL INDEX KEY:** 0001621955

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-40951
- **FILM NUMBER:** 26671944

**MAIL ADDRESS:**
- **STREET 1:** 150 WEST CHURCH AVENUE
- **STREET 2:** TAI PO INDUSTRIAL ESTATE, TAI PO, NT,
- **CITY:** MARYVILLE
- **STATE:** DE
- **ZIP:** 37801
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Portillo's Inc.
- **CENTRAL INDEX KEY:** 0001871509
- **STANDARD INDUSTRIAL CLASSIFICATION:** RETAIL-EATING PLACES [5812]
- **ORGANIZATION NAME:** 07 Trade & Services
- **EIN:** 871104304
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1228

**BUSINESS ADDRESS:**
- **STREET 1:** C/O THE PORTILLO RESTAURANT GROUP
- **STREET 2:** 2001 SPRING ROAD, SUITE 400
- **CITY:** OAK BROOK
- **STATE:** IL
- **ZIP:** 60523-1903
- **BUSINESS PHONE:** (630) 954-3773

**MAIL ADDRESS:**
- **STREET 1:** C/O THE PORTILLO RESTAURANT GROUP
- **STREET 2:** 2001 SPRING ROAD, SUITE 400
- **CITY:** OAK BROOK
- **STATE:** IL
- **ZIP:** 60523-1903

## Ex-24

**Exhibit 24**

**POWER OF ATTORNEY**

Know all by these present, that the undersigned hereby constitutes and appoints Komail Raza and Christine DeCicco, both of Portillo's Inc., as the undersigned's true and lawful attorney-in-fact (i) for purposes of acting as an Account Administrator for the undersigned's account with the enhanced Electronic Data Gathering, Analysis, and Retrieval system ("EDGAR Next") of the U.S. Securities and Exchange Commission ("SEC"), and (ii) to prepare, execute in the undersigned's name and submit to the SEC a Form ID, including amendments thereto, and any other documents necessary or appropriate to obtain codes and passwords enabling the undersigned to make electronic filings with the SEC through EDGAR Next.

This Power of Attorney shall remain in full force and effect until the earlier of it being (a) revoked by the undersigned in a signed writing delivered to the foregoing attorney-in-fact or (b) superseded by a new power of attorney regarding the purposes outlined herein as of a later date.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of this 6<sup>th</sup> day of February, 2026.

---

| |
|:---|
| /s/ Brett Patterson |
| Signature |
| Brett Patterson |
| Print Name |

---

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 3

### INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Patterson Brett<br><sub>(Last) (First) (Middle)</sub><br>C/O PORTILLO'S INC.<br>2001 SPRING ROAD, SUITE 400<br><sub>(Street)</sub><br>OAK BROOK, IL 60523<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>Portillo's Inc. [ PTLO ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2026-02-23 | **4. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director   [ ] 10% Owner<br>[X] Officer (give title below)   [ ] Other (specify below)<br>_President & CEO_ | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities Beneficially Owned

---

|  |  |  |  |
| --- | --- | --- | --- |
| 1. Title of Security | 2. Amount of Securities Beneficially Owned | 3. Ownership Form | 4. Nature of Indirect Beneficial Ownership |
| Class A common stock | 69084<sup>(1)</sup> | D |  |

---

## Table II - Derivative Securities Beneficially Owned

---

|  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 3. Title and Amount of Underlying Securities | 3. Title and Amount of Underlying Securities | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |

---

### Footnotes:

(1) Represents inducement grant of restricted stock units, one-half of which vest on February 23, 2027 and February 23, 2028, in each case, subject to the Reporting Person's continued service with the Issuer and the terms of the applicable award agreement.

**Remarks:**
Exhibit 24 - Power of Attorney (incorporated herein by reference).

**Signature:** /s/ Kelly M. Kaiser, as attorney-in-fact for Brett Patterson  
**Date:** 2026-02-24

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**