LAKE FOREST, Ill.--(BUSINESS WIRE)--Packaging Corporation of America (NYSE: PKG) today reported third quarter 2026 net income of $262 million, or $2.93 per share, and net income of $272 million, or $3.04 per share, excluding special items. Third quarter net sales were $2.6 billion in 2026 and $2.3 billion in 2025. Diluted earnings per share attributable to Packaging Corporation of America shareholders   Three Months Ended September 30, 2026 2025 Change Repo. ...