Packaging Corporation of America
US ˙ NYSE ˙ US6951561090

SecurityPKG / Packaging Corporation of America
InstitutionRossmore Private Capital
Latest Disclosed Ownership3,110 shares
Latest Disclosed Value $ 663,892
Rossmore Private Capital ownership in PKG / Packaging Corporation of America

On May 1, 2026 - Rossmore Private Capital filed a 13F-HR form disclosing ownership of 3,110 shares of Packaging Corporation of America (US:PKG) valued at $660,004 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 3,110 shares of Packaging Corporation of America. This represents a change in shares of 0.00% during the quarter. The current value of the position is $697,853 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)
2026-05-01 2026-03-31 13F PACKAGING CORP AMER COM 695156109 3,110 0 0.00 664 2.79 0.0582
2026-02-05 2025-12-31 13F PACKAGING CORP AMER COM 695156109 3,110 210 7.24 645 2.22 0.0575
2025-10-30 2025-09-30 13F PACKAGING CORP AMER COM 695156109 2,900 0 0.00 632 15.57 0.0681
2025-08-07 2025-06-30 13F PACKAGING CORP AMER COM 695156109 2,900 0 0.00 547 -4.88 0.0638
2025-05-13 2025-03-31 13F PACKAGING CORP AMER COM 695156109 2,900 0 0.00 574 -11.96 0.0707
2025-02-13 2024-12-31 13F PACKAGING CORP AMER COM 695156109 2,900 0 0.00 653 4.49 0.0807
2024-11-05 2024-09-30 13F PACKAGING CORP AMER COM 695156109 2,900 0 0.00 625 17.96 0.0772
2024-08-12 2024-06-30 13F PACKAGING CORP AMER COM 695156109 2,900 0 0.00 529 -3.82 0.0695
2024-05-13 2024-03-31 13F PACKAGING CORP AMER COM 695156109 2,900 -80 -2.68 550 13.40 0.0720
2024-02-07 2023-12-31 13F PACKAGING CORP AMER COM 695156109 2,980 0 0.00 485 6.13 0.0686
2023-11-13 2023-09-30 13F PACKAGING CORP AMER COM 695156109 2,980 0 0.00 458 16.28 0.0693
2023-08-14 2023-06-30 13F PACKAGING CORP AMER COM 695156109 2,980 0 0.00 394 -4.84 0.0586
2023-05-02 2023-03-31 13F PACKAGING CORP AMER COM 695156109 2,980 0 0.00 414 8.40 0.0646
2023-02-14 2022-12-31 13F PACKAGING CORP AMER COM 695156109 2,980 0 0.00 381 0.0610
2022-11-08 2022-09-30 13F PACKAGING CORP AMER COM 695156109 2,980 0 0.00 0 0.0600
2022-08-11 2022-06-30 13F PACKAGING CORP AMER COM 695156109 2,980 0 0.00 0 0.0710
2022-05-09 2022-03-31 13F PACKAGING CORP AMER COM 695156109 2,980 -10 -0.33 0 0.0724
2022-02-07 2021-12-31 13F PACKAGING CORP AMER COM 695156109 2,990 0 0.00 0 0.0636
2021-11-08 2021-09-30 13F PACKAGING CORP AMER COM 695156109 2,990 90 3.10 0 0.0704
2021-08-13 2021-06-30 13F PACKAGING CORP AMER COM 695156109 2,900 0 0.00 0 0.0672
2021-05-10 2021-03-31 13F PACKAGING CORP AMER COM 695156109 2,900 -8 -0.28 0 0.0731
2021-02-10 2020-12-31 13F PACKAGING CORP AMER COM 695156109 2,908 8 0.28 0 0.0813
2020-11-10 2020-09-30 13F PACKAGING CORP AMER COM 695156109 2,900 -1,550 -34.83 0 -100.00 0.0743
2020-08-05 2020-06-30 13F PACKAGING CORP AMER COM 695156109 4,450 0 0.00 444 15.03 0.1226
2020-05-07 2020-03-31 13F PACKAGING CORP AMER COM 695156109 4,450 0 0.00 386 -22.49 0.1335
2020-02-10 2019-12-31 13F PACKAGING CORP AMER COM 695156109 4,450 -150 -3.26 498 2.05 0.1536
2019-11-05 2019-09-30 13F PACKAGING CORP AMER COM 695156109 4,600 0 0.00 488 11.42 0.1641
2019-08-05 2019-06-30 13F PACKAGING CORP AMER COM 695156109 4,600 -100 -2.13 438 -6.21 0.1547
2019-04-30 2019-03-31 13F PACKAGING CORP AMER COM 695156109 4,700 0 0.00 467 19.13 0.1720
2019-01-22 2018-12-31 13F PACKAGING CORP AMER COM 695156109 4,700 1,000 27.03 392 -3.45 0.1662
2018-10-26 2018-09-30 13F PACKAGING CORP AMER COM 695156109 3,700 -150 -3.90 406 -5.58 0.1623
2018-07-20 2018-06-30 13F PACKAGING CORP AMER COM 695156109 3,850 1,450 60.42 430 59.26 0.2776
2018-05-04 2018-03-31 13F PACKAGING CORP AMER COM 695156109 2,400 0 0.00 270 -6.57 0.2733
2018-03-15 2017-12-31 13F PACKAGING CORP AMER COM COM 695156109 2,400 2,400 289 0.2915
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.