SHIRLEY DONALD R.

PrivateCIK: 1776032
Location

LAKE FOREST, IL

Senior insider sale

SVP at PACKAGING CORP OF AMERICA — senior position signals high conviction

$3.00M

12K shares

What this filing means

SHIRLEY DONALD R. plans to sell 12K shares of PACKAGING CORP OF AMERICA valued at approximately $3.00M. Form 144 is a notice of intent to sell restricted or control securities — not a mandatory transaction. This filing provides advance warning of potential selling pressure.

InsiderSHIRLEY DONALD R.CIK 1776032
Officer· SVP
Since May 2019
12K
Shares to sell
$3.00M
Approx. market value
12K
Acquired (3 months)
1
Planned
Securities Acquired — Last 3 Months6
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Stock bonus

Stock bonus

2/23/2026
1.28K

Stock bonus

Stock bonus

2/23/2026
1.98K

Stock bonus

Stock bonus

4/10/2025
3.57K

Stock bonus

Stock bonus

3/11/2025
2.14K

Stock bonus

Stock bonus

2/23/2025
1.84K

Stock bonus

Stock bonus

2/25/2024
1.18K
Total acquired12K
Planned & Completed Dispositions1
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NYSEPlanned

Units to sell

12K

Market value

$3.00M

8/20/2026
Total

Units

12K

Value

$3.00M