Form 4: PKG CEO Sells 25,000 Shares Under 10b5-1 Plan

Mark W. Kowlzan, Chairman & CEO of Packaging Corp of America, sold 25,000 shares of common stock at a weighted average price of $215.97 per share under a pre-arranged Rule 10b5-1 trading plan.

Summary

• Mark W. Kowlzan, Chairman & CEO of Packaging Corp of America (PKG), reported a sale of common stock.
• The transaction involved the disposition of 25,000 shares of PKG common stock.
• The shares were sold at a weighted average price of $215.97 per share.
• The transaction occurred on September 11, 2025.
• Following the sale, Mr. Kowlzan directly beneficially owns 437,378 shares.
• Additional indirect beneficial ownership includes 19,568 shares in a 401k plan and 2,565 shares held by a spouse, though beneficial ownership of spouse's shares is disclaimed.
• The transaction was made pursuant to a Rule 10b5-1(c) contract, instruction, or written plan.

Sentiment

Score: 5

Explanation: The filing is a routine disclosure of an insider stock sale under a pre-arranged 10b5-1 plan, which is generally considered neutral as it reduces concerns about opportunistic selling.

Positives

• The sale was conducted under a Rule 10b5-1 trading plan, indicating a pre-scheduled transaction and reducing concerns about opportunistic insider selling.

Negatives

• An insider sale, even under a 10b5-1 plan, represents a reduction in direct ownership by a key executive.

Future Outlook

Not applicable as this filing reports a past insider transaction, not future company guidance.

Industry Context

This insider transaction is a routine disclosure and does not provide specific insights into broader industry trends or competitive landscape.

Corporate Governance

Related Party Transactions

• Shares held indirectly by spouse (2,565 shares) are disclosed, but the reporting person disclaims beneficial ownership.

Stakeholder Impact

• Shareholders: May view the sale as a slight reduction in direct insider ownership, though mitigated by the 10b5-1 plan.

Key Dates

Recommendation

The filing reports a routine insider stock sale by the Chairman & CEO under a Rule 10b5-1 plan. Such pre-arranged sales are common for executives for personal financial planning and do not typically signal a change in the company's fundamental outlook or warrant a strong buy or sell recommendation based solely on this disclosure. The 10b5-1 plan mitigates concerns about opportunistic selling, suggesting a neutral impact on investment thesis.

Keywords

Packaging Corp of America, PKG, Mark W. Kowlzan, Insider Sale, Form 4, 10b5-1 Plan, CEO Stock Sale, Corporate Governance