Packaging Corporation of America
US ˙ NYSE ˙ US6951561090

SecurityPKG / Packaging Corporation of America
InstitutionNorthwestern Mutual Wealth Management Co
Latest Disclosed Ownership2,268 shares
Latest Disclosed Value $ 481,337
Northwestern Mutual Wealth Management Co reports 30.68% decrease in ownership of PKG / Packaging Corporation of America

On May 7, 2026 - Northwestern Mutual Wealth Management Co filed a 13F-HR form disclosing ownership of 2,268 shares of Packaging Corporation of America (US:PKG) valued at $481,315 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on February 10, 2026 disclosing 3,272 shares of Packaging Corporation of America. This represents a change in shares of -30.68% during the quarter. The current value of the position is $508,917 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-07 2026-03-31 13F PACKAGING CORP AMER COM 695156109 2,268 -1,004 -30.68 481 -28.64 0.0003
2026-02-10 2025-12-31 13F/A-1 PACKAGING CORP AMER COM 695156109 3,272 595 22.23 675 15.61 0.0004
2026-02-05 2025-12-31 13F PACKAGING CORP AMER COM 695156109 3,791 1,114 60 0.0000
2025-11-14 2025-09-30 13F PACKAGING CORP AMER COM 695156109 2,677 80 3.08 584 19.22 0.0004
2025-08-13 2025-06-30 13F PACKAGING CORP AMER COM 695156109 2,597 16 0.62 489 -4.31 0.0004
2025-05-14 2025-03-31 13F PACKAGING CORP AMER COM 695156109 2,581 -493 -16.04 511 -26.16 0.0004
2025-02-11 2024-12-31 13F PACKAGING CORP AMER COM 695156109 3,074 514 20.08 692 25.59 0.0006
2024-11-12 2024-09-30 13F PACKAGING CORP AMER COM 695156109 2,560 1 0.04 551 17.99 0.0005
2024-08-16 2024-06-30 13F PACKAGING CORP AMER COM 695156109 2,559 -1,205 -32.01 467 -34.59 0.0005
2024-05-15 2024-03-31 13F PACKAGING CORP AMER COM 695156109 3,764 904 31.61 714 53.55 0.0007
2024-02-13 2023-12-31 13F PACKAGING CORP AMER COM 695156109 2,860 -58 -1.99 466 3.79 0.0005
2023-11-14 2023-09-30 13F PACKAGING CORP AMER COM 695156109 2,918 -1,286 -30.59 448 -19.28 0.0006
2023-08-14 2023-06-30 13F PACKAGING CORP AMER COM 695156109 4,204 -4,431 -51.31 556 -53.67 0.0007
2023-05-15 2023-03-31 13F PACKAGING CORP AMER COM 695156109 8,635 628 7.84 1,199 16.99 0.0017
2023-02-21 2022-12-31 13F PACKAGING CORP AMER COM 695156109 8,007 -130 -1.60 1,024 12.16 0.0016
2022-11-14 2022-09-30 13F PACKAGING CORP AMER COM 695156109 8,137 244 3.09 913 -15.85 0.0016
2022-08-04 2022-06-30 13F PACKAGING CORP AMER COM 695156109 7,893 272 3.57 1,085 -8.82 0.0019
2022-05-09 2022-03-31 13F PACKAGING CORP AMER COM 695156109 7,621 449 6.26 1,190 21.80 0.0019
2022-02-03 2021-12-31 13F PACKAGING CORP AMER COM 695156109 7,172 -484 -6.32 977 -7.13 0.0016
2021-11-15 2021-09-30 13F PACKAGING CORP AMER COM 695156109 7,656 343 4.69 1,052 6.37 0.0019
2021-08-13 2021-06-30 13F PACKAGING CORP AMER COM 695156109 7,313 587 8.73 989 9.40 0.0019
2021-05-14 2021-03-31 13F PACKAGING CORP AMER COM 695156109 6,726 901 15.47 904 12.44 0.0019
2021-02-12 2020-12-31 13F PACKAGING CORP AMER COM 695156109 5,825 351 6.41 804 34.67 0.0019
2020-11-13 2020-09-30 13F PACKAGING CORP AMER COM 695156109 5,474 -168 -2.98 597 6.04 0.0016
2020-08-14 2020-06-30 13F PACKAGING CORP AMER COM 695156109 5,642 1,452 34.65 563 55.10 0.0017
2020-05-08 2020-03-31 13F PACKAGING CORP AMER COM 695156109 4,190 1,257 42.86 363 10.67 0.0014
2020-02-13 2019-12-31 13F PACKAGING CORP AMER COM 695156109 2,933 -387 -11.66 328 -6.82 0.0011
2019-11-12 2019-09-30 13F PACKAGING CORP AMER COM 695156109 3,320 242 7.86 352 19.73 0.0013
2019-08-12 2019-06-30 13F PACKAGING CORP AMER COM 695156109 3,078 -405 -11.63 294 -15.03 0.0012
2019-05-10 2019-03-31 13F PACKAGING CORP AMER COM 695156109 3,483 1,772 103.57 346 143.66 0.0015
2019-02-12 2018-12-31 13F PACKAGING CORP AMER COM 695156109 1,711 -1,296 -43.10 142 -56.97 0.0007
2018-11-01 2018-09-30 13F PACKAGING CORP AMER COM 695156109 3,007 1,760 141.14 330 137.41 0.0017
2018-08-10 2018-06-30 13F PACKAGING CORP AMER COM 695156109 1,247 72 6.13 139 5.30 0.0008
2018-05-14 2018-03-31 13F PACKAGING CORP AMER COM 695156109 1,175 -73 -5.85 132 -12.00 0.0008
2018-01-31 2017-12-31 13F PACKAGING CORP AMER COM 695156109 1,248 226 22.11 150 28.21 0.0010
2017-11-07 2017-09-30 13F PACKAGING CORP AMER COM 695156109 1,022 -429 -29.57 117 -27.33 0.0008
2017-08-10 2017-06-30 13F PACKAGING CORP AMER COM 695156109 1,451 665 84.61 161 123.61 0.0013
2017-05-09 2017-03-31 13F PACKAGING CORP AMER COM 695156109 786 -456 -36.71 72 -31.43 0.0007
2017-02-15 2016-12-31 13F PACKAGING CORP AMER COM 695156109 1,242 612 97.14 105 105.88 0.0011
2016-11-14 2016-09-30 13F PACKAGING CORP AMER COM 695156109 630 160 34.04 51 64.52 0.0008
2016-08-29 2016-06-30 13F PACKAGING CORP AMER COM 695156109 470 13 2.84 31 10.71 0.0004
2016-05-16 2016-03-31 13F PACKAGING CORP AMER COM 695156109 457 21 4.82 28 3.70 0.0005
2016-02-16 2015-12-31 13F PACKAGING CORP AMER COM 695156109 436 -42 -8.79 27 -6.90 0.0005
2015-11-16 2015-09-30 13F PACKAGING CORP AMER COM 695156109 478 94 24.48 29 20.83 0.0007
2015-09-30 2015-06-30 13F/A-1 PACKAGING CORP AMER COM 695156109 384 -169 -30.56 24 -44.19 0.0006
2015-08-14 2015-06-30 13F PACKAGING CORP AMER COM 695156109 553 43
2015-05-15 2015-03-31 13F PACKAGING CORP AMER COM 695156109 553 -135 -19.62 43 -20.37 0.0012
2015-02-13 2014-12-31 13F PACKAGING CORP AMER COM 695156109 688 610 782.05 54 980.00 0.0017
2014-11-14 2014-09-30 13F PACKAGING CORP AMER COM 695156109 78 -11 -12.36 5 -16.67 0.0002
2014-08-05 2014-06-30 13F PACKAGING CORP AMER COM 695156109 89 6 7.23 6 0.00 0.0002
2014-05-15 2014-03-31 13F PACKAGING CORP AMER COM 695156109 83 83 -89.62 6 -86.96 0.0003
2014-02-14 2013-12-31 13F PACKAGING CORP AMER COM 695156109 0 -800 -100.00 0 -100.00
2013-11-14 2013-09-30 13F PACKAGING CORP AMER COM 695156109 800 -145 -15.34 46 0.00 0.0024
2013-08-21 2013-06-30 13F/A-1 PACKAGING CORP AMER COM 695156109 945 945 46 0.0027
2013-08-14 2013-06-30 13F PACKAGING CORP AMER COM 695156109 56,140 2,749 0.0302
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.