Item 5.07. Submission of Matters to a Vote of Security Holders

On May 4, 2021, Packaging Corporation of America held its 2021 Annual Meeting of Stockholders, at which the following proposals were voted upon and approved by PCA's stockholders:





    (a)  Election of Directors. Voting results are summarized as follows, with
         fractional shares rounded to the nearest whole share:




                                                                            Broker Non
Nominee                Votes For        Votes Against      Abstentions         Vote
Cheryl K. Beebe         77,527,737           3,957,020           42,402       4,872,279
Duane C. Farrington     81,253,840             198,227           75,092       4,872,279
Donna A. Harman         81,221,807             260,420           44,932       4,872,279
Mark W. Kowlzan         76,544,235           4,608,537          374,387       4,872,279
Robert C. Lyons         81,181,079             271,484           74,596       4,872,279
Thomas P. Maurer        81,242,021             210,121           75,017       4,872,279
Samuel M. Mencoff       69,483,256          12,004,016           39,887       4,872,279
Roger B. Porter         72,774,297           7,488,202        1,264,660       4,872,279
Thomas S. Souleles      79,147,245           2,332,366           47,548       4,872,279
Paul T. Stecko          79,445,052           2,013,713           68,394       4,872,279
James D. Woodrum        77,714,564           3,743,805           68,790       4,872,279

(b) Ratification of Independent Registered Public Accounting Firm. The audit committee's appointment of KPMG LLP as PCA's independent registered public accounting firm was ratified by the following vote: 86,227,021 votes for, 120,879 votes against and 51,583 abstentions.

(c) Approval of PCA's Executive Compensation. 78,186,432 votes for, 3,163,960 votes against, 176,766 abstentions and 4,872,279 broker non-votes.

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