LAKE FOREST, Ill.–(BUSINESS WIRE)–Packaging Corporation of America (NYSE: PKG) will hold a conference call on Tuesday, April 27, 2021 at 9:00 a.m. Eastern Time to discuss first quarter 2021 results. First quarter earnings results will be released after the market closes on Monday, April 26, 2021. To access the conference call, please dial (855) 730-0288 (U.S. and Canada) or (832) 412-2295 (International) by 8:45 a.m. (Eastern Time). The conference call leader will be Mark Kowlzan, and the con