Preformed Line Products Company
US ˙ NasdaqGS ˙ US7404441047

SecurityPLPC / Preformed Line Products Company
InstitutionNorthern Trust Corp
Latest Disclosed Ownership30,586 shares
Latest Disclosed Value $ 8,281,160
Northern Trust Corp reports 3.62% increase in ownership of PLPC / Preformed Line Products Company

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 30,586 shares of Preformed Line Products Company (US:PLPC) valued at $8,281,160 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 29,517 shares of Preformed Line Products Company. This represents a change in shares of 3.62% during the quarter. The current value of the position is $11,103,330 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-14 2026-03-31 13F PREFORMED LINE PRODS COM 740444104 30,586 1,069 3.62 8,281 35.73 0.0011
2026-02-17 2025-12-31 13F PREFORMED LINE PRODS COM 740444104 29,517 -1,206 -3.93 6,101 1.24 0.0008
2025-11-14 2025-09-30 13F PREFORMED LINE PRODS COM 740444104 30,723 -1,391 -4.33 6,026 17.42 0.0008
2025-08-13 2025-06-30 13F PREFORMED LINE PRODS COM 740444104 32,114 -2,184 -6.37 5,132 6.83 0.0007
2025-05-13 2025-03-31 13F PREFORMED LINE PRODS COM 740444104 34,298 -1,434 -4.01 4,805 5.21 0.0007
2025-02-14 2024-12-31 13F PREFORMED LINE PRODS COM 740444104 35,732 429 1.22 4,566 1.00 0.0006
2024-11-13 2024-09-30 13F PREFORMED LINE PRODS COM 740444104 35,303 70 0.20 4,522 3.05 0.0007
2024-08-14 2024-06-30 13F PREFORMED LINE PRODS COM 740444104 35,233 -1,728 -4.68 4,388 -7.74 0.0007
2024-05-14 2024-03-31 13F PREFORMED LINE PRODS COM 740444104 36,961 -3,330 -8.26 4,756 -11.83 0.0008
2024-02-13 2023-12-31 13F PREFORMED LINE PRODS COM 740444104 40,291 277 0.69 5,393 -17.09 0.0010
2023-11-13 2023-09-30 13F PREFORMED LINE PRODS COM 740444104 40,014 -27 -0.07 6,505 4.08 0.0013
2023-08-11 2023-06-30 13F PREFORMED LINE PRODS COM 740444104 40,041 1,657 4.32 6,250 27.19 0.0012
2023-05-15 2023-03-31 13F PREFORMED LINE PRODS COM 740444104 38,384 -1,185 -2.99 4,915 49.14 0.0010
2023-02-13 2022-12-31 13F PREFORMED LINE PRODS COM 740444104 39,569 -330 -0.83 3,296 16.10 0.0007
2022-11-14 2022-09-30 13F PREFORMED LINE PRODS COM 740444104 39,899 58 0.15 2,838 15.84 0.0006
2022-08-12 2022-06-30 13F PREFORMED LINE PRODS COM 740444104 39,841 -3,007 -7.02 2,450 -9.86 0.0005
2022-05-13 2022-03-31 13F PREFORMED LINE PRODS COM 740444104 42,848 -1,204 -2.73 2,718 -4.63 0.0005
2022-02-08 2021-12-31 13F PREFORMED LINE PRODS COM 740444104 44,052 -715 -1.60 2,850 -2.10 0.0005
2021-11-15 2021-09-30 13F PREFORMED LINE PRODS COM 740444104 44,767 -1,362 -2.95 2,911 -14.96 0.0005
2021-08-13 2021-06-30 13F PREFORMED LINE PRODS COM 740444104 46,129 -1,760 -3.68 3,423 3.95 0.0006
2021-05-12 2021-03-31 13F PREFORMED LINE PRODS COM 740444104 47,889 -20,276 -29.75 3,293 -29.41 0.0006
2021-02-11 2020-12-31 13F PREFORMED LINE PRODS COM 740444104 68,165 -2,163 -3.08 4,665 36.16 0.0009
2020-11-16 2020-09-30 13F PREFORMED LINE PRODS COM 740444104 70,328 -1,746 -2.42 3,426 -4.94 0.0008
2020-08-14 2020-06-30 13F PREFORMED LINE PRODS COM 740444104 72,074 27,921 63.24 3,604 63.82 0.0009
2020-05-14 2020-03-31 13F PREFORMED LINE PRODS COM 740444104 44,153 1,391 3.25 2,200 -14.73 0.0006
2020-02-14 2019-12-31 13F PREFORMED LINE PRODS COM 740444104 42,762 520 1.23 2,580 11.88 0.0006
2019-11-13 2019-09-30 13F PREFORMED LINE PRODS COM 740444104 42,242 2,007 4.99 2,306 3.22 0.0006
2019-08-13 2019-06-30 13F PREFORMED LINE PRODS COM 740444104 40,235 1,002 2.55 2,234 7.25 0.0005
2019-05-13 2019-03-31 13F PREFORMED LINE PRODS COM 740444104 39,233 332 0.85 2,083 -1.33 0.0005
2019-02-12 2018-12-31 13F PREFORMED LINE PRODS COM 740444104 38,901 -262 -0.67 2,111 -23.32 0.0006
2018-11-14 2018-09-30 13F PREFORMED LINE PRODS COM 740444104 39,163 -113 -0.29 2,753 -21.05 0.0007
2018-09-18 2018-06-30 13F/A-1 PREFORMED LINE PRODS COM 740444104 39,276 -233 -0.59 3,487 35.58 0.0009
2018-08-14 2018-06-30 13F PREFORMED LINE PRODS COM 740444104 39,276 -233 3,487
2018-05-09 2018-03-31 13F PREFORMED LINE PRODS COM 740444104 39,509 -285 -0.72 2,572 -9.05 0.0007
2018-02-14 2017-12-31 13F PREFORMED LINE PRODS COM 740444104 39,794 -699 -1.73 2,828 3.78 0.0007
2017-11-13 2017-09-30 13F PREFORMED LINE PRODS COM 740444104 40,493 373 0.93 2,725 46.35 0.0007
2017-08-11 2017-06-30 13F PREFORMED LINE PRODS COM 740444104 40,120 7,354 22.44 1,862 8.95 0.0005
2017-05-12 2017-03-31 13F PREFORMED LINE PRODS COM 740444104 32,766 29 0.09 1,709 -10.19 0.0005
2017-02-13 2016-12-31 13F PREFORMED LINE PRODS COM 740444104 32,737 1,718 5.54 1,903 45.49 0.0006
2016-11-09 2016-09-30 13F PREFORMED LINE PRODS COM 740444104 31,019 1,484 5.02 1,308 9.64 0.0004
2016-08-12 2016-06-30 13F PREFORMED LINE PRODS COM 740444104 29,535 -600 -1.99 1,193 8.36 0.0004
2016-08-19 2016-03-31 13F/A-1 PREFORMED LINE PRODS COM 740444104 30,135 -95 -0.31 1,101 -13.44 0.0004
2016-05-13 2016-03-31 13F PREFORMED LINE PRODS COM 740444104 30,135 1,101
2016-02-12 2015-12-31 13F PREFORMED LINE PRODS COM 740444104 30,230 49 0.16 1,272 13.47 0.0004
2015-11-12 2015-09-30 13F PREFORMED LINE PRODS COM 740444104 30,181 30,181 0.00 1,121 0.0004
2015-08-13 2015-06-30 13F PREFORMED LINE PRODS COM 740444104 0 -31,805 -100.00 0 -100.00
2015-05-14 2015-03-31 13F PREFORMED LINE PRODS COM 740444104 31,805 -670 -2.06 1,340 -24.46 0.0004
2015-02-12 2014-12-31 13F PREFORMED LINE PRODS COM 740444104 32,475 970 3.08 1,774 6.74 0.0005
2014-11-13 2014-09-30 13F PREFORMED LINE PRODS COM 740444104 31,505 390 1.25 1,662 -0.78 0.0005
2014-08-14 2014-06-30 13F PREFORMED LINE PRODS COM 740444104 31,115 -4,353 -12.27 1,675 -31.10 0.0005
2014-05-14 2014-03-31 13F PREFORMED LINE PRODS COM 740444104 35,468 -2,615 -6.87 2,431 -12.74 0.0008
2014-02-21 2013-12-31 13F/A-1 PREFORMED LINE PRODS COM 740444104 38,083 216 0.57 2,786 2.31 0.0009
2014-02-12 2013-12-31 13F PREFORMED LINE PRODS COM 740444104 38,083 2,786
2013-11-13 2013-09-30 13F PREFORMED LINE PRODS COM 740444104 37,867 3,710 10.86 2,723 20.27 0.0010
2013-08-09 2013-06-30 13F PREFORMED LINE PRODS COM 740444104 34,157 34,157 2,264 0.0008
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.