 LAKE FOREST, Ill.--BUSINESS WIRE--Packaging Corporation of America NYSE: PKG will hold a conference call on Tuesday, April 26, 2022 at 9:00 a.m. Eastern Time to discuss first quarter 2022 results. First quarter earnings results will be released after the market closes on Monday, April 25, 2022. To access the conference call, please dial 877 370-2526 U.S. and Canada or 720 634-2764 International by 8:45 a.m. Eastern Time. The conference call leader will be Mark Kowlzan, and the con 