LAKE FOREST, Ill.–(BUSINESS WIRE)–Packaging Corporation of America (NYSE: PKG) today reported first quarter 2021 net income of $167 million, or $1.75 per share, and net income of $169 million, or $1.77 per share, excluding special items. First quarter net sales were $1.8 billion in 2021 and $1.7 billion in 2020. Diluted earnings per share attributable to Packaging Corporation of America shareholders         Three Months Ended     March 31     2021   2020   Change   Reported Diluted EPS $ 1.75