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

  5/8/24  Packaging Corp. of America        S-8          5/8/24    4:75K                                    Donnelley … Solutions/FA 
 2/29/24  Packaging Corp. of America        10-K       12/31/23  126:22M                                    Donnelley … Solutions/FA 
 2/23/23  Packaging Corp. of America        10-K       12/31/22  132:30M                                    Donnelley … Solutions/FA 
 2/24/22  Packaging Corp. of America        10-K       12/31/21  134:28M                                    Donnelley … Solutions/FA 
  9/7/21  Packaging Corp. of America        S-3ASR       9/7/21    5:317K                                   Donnelley … Solutions/FA 
 2/24/21  Packaging Corp. of America        10-K       12/31/20  135:26M                                    ActiveDisclosure/FA      

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¹	Filing/Form Types:  -K
	10-K	Annual Report — Form 10-K.
	S-3ASR	Automatic Shelf Registration Statement by a Well-Known Issuer — Form S-3.
	S-8	Registration Statement – Securities for an Employee Benefit Plan — Form S-8.