Results of Operations and Financial Condition. On August 5, 2026, Portillo’s Inc. (NASDAQ: PTLO) issued a press release reporting results for the second quarter ended June 28, 2026. A copy of the earnings press release is attached hereto as Exhibit 99.1.

Chief Financial Officer and Treasurer — Kevin Kalicak: The company hired a new Chief Financial Officer and Treasurer from an external candidate.

Interim Chief Financial Officer and Treasurer — Pamela Smith: Ms. Smith's role was expanded to include the position of Treasurer while she continues as Interim Chief Financial Officer.

Interim Chief Financial Officer — Pamela Smith: Ms. Pamela Smith was appointed as Interim Chief Financial Officer to replace Michelle Hook.

Chief Financial Officer — Michelle Hook: Michelle Hook is departing from her role as Chief Financial Officer.

Results of Operations and Financial Condition. On May 5, 2026, Portillo’s Inc. (NASDAQ: PTLO) issued a press release reporting results for the first quarter ended March 29, 2026. A copy of the earnings press release is attached hereto as Exhibit 99.1.

Chair of the Board of Directors — Michael A. Miles, Jr.: Michael A. Miles, Jr. will not stand for reelection as Chair of the Board of Directors.

Results of Operations and Financial Condition. On February 24, 2026, Portillo’s Inc. (NASDAQ: PTLO) issued a press release reporting results for the fourth quarter ended December 28, 2025. A copy of the earnings press release is attached hereto as Exhibit 99.1.

President and Chief Executive Officer — Brett Patterson: The company hired a new CEO from outside the organization.

shall not be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933, as amended, or into any filing or other document pursuant to the Exchange Act, except as otherwise expressly stated in any such filing. Cautionary Note Regarding Forward-Looking Statements This presentation contains forward-looking statements, within the meaning of the Private Securities Litigation Reform Act of 1995 ("PSLRA"). All statements other than statements o…

Results of Operations and Financial Condition. On November 4, 2025, Portillo’s Inc. (NASDAQ: PTLO) issued a press release reporting results for the third quarter ended September 28, 2025. A copy of the earnings press release is attached hereto as Exhibit 99.1.

Chief Development Officer — Michael Ellis: Mike Ellis departed from his role as Chief Development Officer with a qualifying termination.

President and Chief Executive Officer — Michael Osanloo: The CEO departed, and an interim CEO was appointed.

President and Chief Executive Officer — Michael Osanloo: Michael Osanloo departed from his role as President and Chief Executive Officer without a named successor.

shall not be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933, as amended, or into any filing or other document pursuant to the Exchange Act, except as otherwise expressly stated in any such filing. Cautionary Note Regarding Forward-Looking Statements This press release contains forward-looking statements, within the meaning of the Private Securities Litigation Reform Act of 1995 ("PSLRA"). All statements other than statements…

Results of Operations and Financial Condition. On August 5, 2025, Portillo’s Inc. (NASDAQ: PTLO) issued a press release reporting results for the second quarter ended June 29, 2025. A copy of the earnings press release is attached hereto as Exhibit 99.1.

Director — Eugene Lee, Jr.: Eugene Lee, Jr. was elected to the Board and appointed to the Compensation Committee.

Results of Operations and Financial Condition. On May 6, 2025, Portillo’s Inc. (NASDAQ: PTLO) issued a press release reporting results for the first quarter ended March 30, 2025. A copy of the earnings press release is attached hereto as Exhibit 99.1.

Entry into a Material Definitive Agreement On April 28, 2025, Portillo’s Inc., a Delaware corporation (the “Company”), announced that it has entered into a cooperation agreement (the “Cooperation Agreement”) with Engaged Capital, LLC and certain of its affiliates (collectively, the “Engaged Group”). The Company and the Engaged Group are each herein referred to as a “party” and collectively, the “parties.” Following the execution of the Cooperation Agreement, the Board of Directors of the Comp…

Results of Operations and Financial Condition. On February 25, 2025, Portillo’s Inc. (NASDAQ: PTLO) issued a press release reporting results for the fourth quarter ended December 29, 2024. A copy of the earnings press release is attached hereto as Exhibit 99.1.

Entry into a Material Definitive Agreement Credit Agreement Amendment On January 27, 2025 (the “Closing Date”), PHD Intermediate LLC, a Delaware limited liability company (“Holdings”), Portillo’s Holdings, LLC, a Delaware limited liability company (the “Borrower”), the other Guarantors party thereto, each lender from time to time party thereto (collectively, the “Lenders” and individually, a “Lender”), Fifth Third Bank, National Association, as Administrative Agent, the L/C Issuer and the Swi…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant To the extent required, the information set forth in

shall not be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933, as amended, or into any filing or other document pursuant to the Exchange Act, except as otherwise expressly stated in any such filing. Cautionary Note Regarding Forward-Looking Statements This presentation contains forward-looking statements, within the meaning of the Private Securities Litigation Reform Act of 1995 ("PSLRA"). All statements other than statements o…

Director — Jack Hartung: Mr. Hartung was elected to the Board and appointed to the Audit Committee.

Chief Operating Officer — Tony Darden: The company hired a new Chief Operating Officer from an external candidate with significant industry experience.