February 23, 2026 · Form 4 insider transaction
Shirley Donald R. sold 1,287 shares of Packaging Corporation of America at $225.55 per share, a transaction worth $290.3K. The trade was recorded as shares withheld for taxes and disclosed on an SEC Form 4, filed 1 day after the transaction.
Pursuant to the terms of the Company's Long-Term Equity Incentive Plan, the Company withheld shares to cover the withholding tax obligation associated with the transaction reported above.