PKG Filing
4Filing Date: May 13, 2026

PACKAGING CORP OF AMERICA (PKG) · Insider Trading (Form 4) SEC Filing

Statement of Changes in Beneficial Ownership

descriptionView SEC Filing
ACC: 0001193125-26-221422open_in_new
Total Value$0
Trades2
Insiders1

Transaction Details

MENCOFF SAMUEL M
Director·Direct
Grant · Acquire
Common Stock
Shares+591
Price$0.00
Total Value$0
Shares Owned After270.19K
Transaction DateMay 12, 2026
Footnotes ▸

Share award for equity portion of directors fees. | The beginning share balance increased from the previously reported amount due to reinvestment of dividends in transactions exempt from reporting pursuant to Rule 16a-11 under the Securities Exchange Act of 1934.

MENCOFF SAMUEL M
Director·Indirect · Through family limited partnership
Common Stock
Shares0
Price-
Total Value$0
Shares Owned After75.53K
Footnotes ▸

The share balance increased from the previously reported amount due to reinvestment of dividends in transactions exempt from reporting pursuant to Rule 16a-11 under the Securities Exchange Act of 1934. | Held by Temple Hall Partners, LP, a family limited partnership. Reporting person disclaims beneficial interest of such shares except to the extent of his pecuniary interest therein.

Post-Transaction Holdings

MENCOFF SAMUEL M
SecuritySharesChange
Common Stock345.72K+591 (0.17%)
Original SEC Filing Textexpand_more
=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-05-12 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: PACKAGING CORP OF AMERICA (PKG) CIK: 0000075677 --- Reporting Owner --- Name: MENCOFF SAMUEL M CIK: 0001219630 Role: Director --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-05-12 | Code: A (Grant or award) Shares: +591 | Price: $0.00 Shares Owned After: 270,193.616 | Ownership: D (Direct) Footnotes: [F1] Share award for equity portion of directors fees. [F2] The beginning share balance increased from the previously reported amount due to reinvestment of dividends in transactions exempt from reporting pursuant to Rule 16a-11 under the Securities Exchange Act of 1934. --- Holdings --- [Holding #1] Security: Common Stock Ownership: I (Indirect) Footnotes: [F3] The share balance increased from the previously reported amount due to reinvestment of dividends in transactions exempt from reporting pursuant to Rule 16a-11 under the Securities Exchange Act of 1934. [F4] Held by Temple Hall Partners, LP, a family limited partnership. Reporting person disclaims beneficial interest of such shares except to the extent of his pecuniary interest therein. --- Footnotes (Complete Index) --- F1: Share award for equity portion of directors fees. F2: The beginning share balance increased from the previously reported amount due to reinvestment of dividends in transactions exempt from reporting pursuant to Rule 16a-11 under the Securities Exchange Act of 1934. F3: The share balance increased from the previously reported amount due to reinvestment of dividends in transactions exempt from reporting pursuant to Rule 16a-11 under the Securities Exchange Act of 1934. F4: Held by Temple Hall Partners, LP, a family limited partnership. Reporting person disclaims beneficial interest of such shares except to the extent of his pecuniary interest therein. --- Signature --- /s/ Kent A. Pflederer, attorney in fact (2026-05-13)

keid analysis is for reference only and does not constitute investment advice.