Exhibit 99.1 Joint Filer Information Name of Joint Filer: Berkshire Partners LLC Address of Joint Filer: 200 Clarendon Street 35th Floor Boston, MA 02116-5021 Issuer Name and Ticker or Trading Symbol: Portillo's, Inc. [PTLO] Date of Event Requiring this Statement (Month/Day/Year): 11/17/2022 Designated Filer: Berkshire Partners LLC Signature: Berkshire Partners LLC By: BPSP, L.P., its managing member By: Berkshire Partners Holdings LLC, its general partner /s/Sharlyn C. Heslam ----------------------------- Name: Sharlyn C. Heslam Title: Managing Director 11/21/2022 ---------- Date Joint Filer Information Name of Joint Filer: Berkshire Fund VIII-A, L.P. Address of Joint Filer: 200 Clarendon Street 35th Floor Boston, MA 02116-5021 Issuer Name and Ticker or Trading Symbol: Portillo's, Inc. [PTLO] Date of Event Requiring this Statement (Month/Day/Year): 11/17/2022 Designated Filer: Berkshire Partners LLC Signature: Berkshire Fund VIII-A, L.P. By Eighth Berkshire Associates LLC, its general partner /s/Sharlyn C. Heslam ------------------------------- Name: Sharlyn C. Heslam Title: Managing Director 11/21/2022 ---------- Date Joint Filer Information Name of Joint Filer: Berkshire Fund VIII, L.P. Address of Joint Filer: 200 Clarendon Street 35th Floor Boston, MA 02116-5021 Issuer Name and Ticker or Trading Symbol: Portillo's, Inc. [PTLO] Date of Event Requiring this Statement (Month/Day/Year): 11/17/2022 Designated Filer: Berkshire Partners LLC Signature: Berkshire Fund VIII, L.P. By Eighth Berkshire Associates LLC, its general partner /s/Sharlyn C. Heslam ------------------------------ Name: Sharlyn C. Heslam Title: Managing Director 11/21/2022 ---------- Date Joint Filer Information Name of Joint Filer: Berkshire Investors III LLC Address of Joint Filer: 200 Clarendon Street 35th Floor Boston, MA 02116-5021 Issuer Name and Ticker or Trading Symbol: Portillo's, Inc. [PTLO] Date of Event Requiring this Statement (Month/Day/Year): 11/17/2022 Designated Filer: Berkshire Partners LLC Signature: Berkshire Investors III LLC /s/Sharlyn C. Heslam ----------------------------- Name: Sharlyn C. Heslam Title: Managing Director 11/21/2022 ---------- Date Joint Filer Information Name of Joint Filer: Berkshire Investors IV LLC Address of Joint Filer: 200 Clarendon Street 35th Floor Boston, MA 02116-5021 Issuer Name and Ticker or Trading Symbol: Portillo's, Inc. [PTLO] Date of Event Requiring this Statement (Month/Day/Year): 11/17/2022 Designated Filer: Berkshire Partners LLC Signature: Berkshire Investors IV LLC /s/Sharlyn C. Heslam ------------------------------ Name: Sharlyn C. Heslam Title: Managing Director 11/21/2022 ---------- Date Joint Filer Information Name of Joint Filer: Eighth Berkshire Associates LLC Address of Joint Filer: 200 Clarendon Street 35th Floor Boston, MA 02116-5021 Issuer Name and Ticker or Trading Symbol: Portillo's, Inc. [PTLO] Date of Event Requiring this Statement (Month/Day/Year): 11/17/2022 Designated Filer: Berkshire Partners LLC Signature: Eighth Berkshire Associates LLC /s/Sharlyn C. Heslam ----------------------------- Name: Sharlyn C. Heslam Title: Managing Director 11/21/2022 ---------- Date Joint Filer Information Name of Joint Filer: Berkshire Partners Holdings LLC Address of Joint Filer: 200 Clarendon Street 35th Floor Boston, MA 02116-5021 Issuer Name and Ticker or Trading Symbol: Portillo's, Inc. [PTLO] Date of Event Requiring this Statement (Month/Day/Year): 11/17/2022 Designated Filer: Berkshire Partners LLC Signature: Berkshire Partners Holdings LLC /s/Sharlyn C. Heslam ------------------------------- Name: Sharlyn C. Heslam Title: Managing Director 11/21/2022 ---------- Date Joint Filer Information Name of Joint Filer: BPSP, L.P. Address of Joint Filer: 200 Clarendon Street 35th Floor Boston, MA 02116-5021 Issuer Name and Ticker or Trading Symbol: Portillo's, Inc. [PTLO] Date of Event Requiring this Statement (Month/Day/Year): 11/17/2022 Designated Filer: Berkshire Partners LLC Signature: BPSP, L.P. By: Berkshire Partners Holdings LLC, its general partner /s/Sharlyn C. Heslam ------------------------------ Name: Sharlyn C. Heslam Title: Managing Director 11/21/2022 ---------- Date
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4 Filing
Berkshire Investors IV Form 4Change in insider ownership
Filed: 21 Nov 22, 6:15am