As Of	Filer	Filing¹	For·On·As	Docs:Size	Issuer		Filing Agent

 6/17/22  Packaging Corp. of America        11-K       12/31/21    2:152K                                   Donnelley … Solutions/FA 
 6/17/22  Packaging Corp. of America        11-K       12/31/21    2:152K                                   Donnelley … Solutions/FA 
 2/24/22  Packaging Corp. of America        10-K       12/31/21  134:28M                                    Donnelley … Solutions/FA 
  2/7/22  Beebe Cheryl K                    5          Director²   1:4K   Packaging Corp. of America        DONNELLEY FIN… File16/FA 

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¹	Filing/Form Types:
	5	Annual Statement of Changes in Beneficial Ownership of Securities by an Insider — Form 5 { The Filer is an Insider² of the Issuer }.
	10-K	Annual Report — Form 10-K.
	11-K	Annual Report by an Employee Stock Purchase, Savings or Similar Plan — Form 11-K.
²	Insider:  The Filer is a Director, Officer, 10% Owner and/or Other “insider” of the Issuer.