PACKAGING CORP OF AMERICA

The following discussion and analysis of historical results of operations and financial condition should be read in conjunction with the audited financial statements and the notes thereto which appear elsewhere in this Form 10-K. This discussion includes forward-looking statements regarding our expectations with respect to our future performance, liquidity, ESG goals, and capital resources. Such statements, along with any other non-historical statements in the discussion, are forward-looking. See our discussion regarding forward-looking statements included under “Part I, Item 1A. Risk Factors” of this Form 10-K. For our discussion and analysis of our results of operations, financial condition and cash flows for the year ended December 31, 2021, the earliest of the years presented in the accompanying audited financial statements included in Item 8 herein, please refer to our Annual Report on Form 10-K for the year ended December 31, 2022, filed with the Securities and Exchange Commission on February 23, 2023. Such information is presented in Item 7 of such report under the subcaptions “Results of Operations —Year Ended December 31, 2022, Compared with Year Ended December 31, 2021” and “Liquidity and Capital Resources” and is incorporated by reference herein.