PREFORMED LINE PRODUCTS ANNOUNCES FOURTH QUARTER AND FULL YEAR 2025 FINANCIAL RESULTS (Form 8-K)

PREFORMED LINE PRODUCTS ANNOUNCES FOURTH QUARTER AND FULL YEAR 2025 FINANCIAL RESULTS

CLEVELAND, OHIO - March 4, 2026 - Preformed Line Products Company (NASDAQ: PLPC) today reported financial results for its fourth quarter of 2025 and full year ended December 31, 2025.

Q4/Full Year 2025 highlights:

•Quarterly net sales of $173.1 million, an increase of 4% from Q4 2024

•Annual net sales growth of 13% from 2024, totaling $669.3 million

•Full year diluted EPS of $7.14; adjusted full year diluted EPS of $8.70, a 16% increase from 2024

•Backlog increased 22% to $232.8 million, reflecting robust demand in core markets

•Quarterly dividend increased 5% to $0.21 per share

Net sales in the fourth quarter of 2025 were $173.1 million compared to $167.1 million in the fourth quarter of 2024, a 4% increase. PLP-USA continued its strong 2025 performance with both energy and communications end-market sales contributing to the increase. The international segments were bolstered by sales increases in Asia-Pacific as well as incremental communications market sales from the recently acquired JAP Telecom. Foreign currency translation increased fourth quarter 2025 net sales by $4.4 million.

Net income for the quarter ended December 31, 2025, was $8.4 million, or $1.72 per diluted share, compared to $10.5 million, or $2.13 per diluted share, for the comparable period in 2024. The fourth quarter of 2025 net income was impacted by the continuing tariffs affecting goods sourced internationally by PLP-USA and the tariff-related acceleration of Last-In-First-Out ("LIFO") inventory valuation costs. These costs were partially offset by margin contribution from higher sales levels and selling price increases, higher net interest income and a lower effective tax rate.

Net sales increased 13% to $669.3 million for the full year 2025 compared to $593.7 million in 2024. All segments realized a year-over-year increase in net sales due to higher volumes of energy and communications end-market sales. Foreign currency translation rates increased net sales by $1.4 million for the year ended December 31, 2025.

Net income for the year ended December 31, 2025, was $35.3 million, or $7.14 per diluted share, compared to $37.1 million, or $7.50 per diluted share, for the comparable period in 2024. Excluding the impact from the pension termination completed in the third quarter of 2025, adjusted net income for the twelve-month period ending December 31, 2025 was $43.0 million, or $8.70 per diluted share, a 16% increase. In addition to the pension termination charge, net income for the twelve-month period ending December 31, 2025 was impacted by the continuing tariffs and the tariff-related acceleration of LIFO inventory valuation costs, offset by margin contribution from higher sales, selling price increases, higher net interest income and a lower effective tax rate.

"Our 2025 results reflect the strength of our core energy and communications markets and the resilience of our global operations," said Rob Ruhlman, Executive Chairman. "The significant increase in backlog and sales demonstrates robust demand. We have incurred cost increases on key commodity inputs necessary for our USA production process, primarily due to Section 232 steel and aluminum tariffs. Given the significance of these tariff headwinds on our business, I am pleased with our execution and fourth quarter results. While we have benefited from selling price increases enacted earlier this year, we continue to monitor whether further price adjustments are necessary. The increase in our quarterly dividend underscores our commitment to

delivering value to shareholders. We expect that our strong cash generation will continue to allow us to invest in new product development, facility modernization, and strategic acquisitions to support long-term growth. I look forward to our new state-of-the-art Poland facility coming online later in 2026 and the contributions from our new facility in Spain. Our focus is unchanged: provide our customers with the high-quality products and superior customer service they have come to expect from PLP."

A presentation on fourth quarter results will also be available on PLP's website at www.plp.com/investor-relations.