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Red Flags

Filings a company makes when something has gone wrong, or is about to: a missed reporting deadline (NT 10-K/Q), a delisting from its exchange (Form 25), a deregistration that ends SEC reporting altogether (Form 15), or an insider's notice of intent to sell restricted stock (Form 144). Any one can be routine — Form 144s are filed constantly, and a late filing is sometimes just a late filing — so what is worth reading here is the pattern and the timing.

Insider sale notices · 24
Notable Donald Ray Shirley filed notice of proposed sale August 20, 2026

12,000 shares · $3,000,000 · via Merrill Lynch · Director

Notable Hassfurther Thomas A filed notice of proposed sale July 28, 2026

28,391 shares · $7,276,897 · via Charles Schwab & Co., Inc. · Officer

22 more red-flag filings behind a free account

See every red-flag filing PACKAGING CORP OF AMERICA has made, with the filing behind each one.

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