PREFORMED LINE PRODUCTS CO

Preformed Line Products Company together with its subsidiaries (the "Company" or "PLP") is an international designer and manufacturer of products and systems employed in the construction and maintenance of overhead, ground-mounted and underground networks for energy, telecommunication, cable, data communication and other similar industries. The Company’s primary products support, protect, connect, terminate and secure cables and wires. The Company provides formed wire solutions, connectors, fiber optic and copper splice closures, solar hardware mounting applications, and electric vehicle charging station foundations. The Company’s goal is to continue to achieve profitable growth as a leader in the research, innovation, development, manufacture and marketing of technically advanced products and services primarily related to the energy and communications markets.

The Company serves a worldwide market through strategically located domestic and international manufacturing facilities. Each of the Company’s domestic and international manufacturing facilities have obtained or are actively seeking an International Organization of Standardization ("ISO") 9001:2015 Certified Management System Certificate. The ISO 9001:2015 certified management system is a globally recognized certified quality standard for manufacturing and assists the Company in marketing its products throughout the world. The Company’s customers include public and private energy utilities and communication companies, cable operators, governmental agencies, contractors and subcontractors, distributors and value-added resellers. The Company is not dependent on a single customer or small group of customers. The Company has one customer accounting for 10.7% of the Company's consolidated revenues.

Energy Products are used for supporting, protecting, terminating and splicing transmission and distribution lines as well as bolted, welded, and compressed connectors for substations. PLP offers a full array of products for OPGW (Optical Ground Wire) and ADSS (All Dielectric Self Supporting) fiber optic cables, which are commonly used to monitor and control power networks. Formed wire products are the mainstay of PLP’s product offering and such products enjoy an almost universal acceptance in the Company’s markets. Formed wire products are based on the principle of forming a variety of stiff wire materials into a helical (spiral) shape. The advantages of using the Company’s helical formed wire products are that they are economical, dependable and easy to use. Additional energy product offerings include a wide array of string hardware products, polymer insulators, wildlife protection, substation fittings and motion control devices like spacer dampers. Energy products were approximately 71%, 71%, and 64% of the Company’s revenues in 2025, 2024 and 2023, respectively.

Communications Products include rugged outside plant (OSP) closures to protect and support wireline and wireless networks, such as fiber optic cable or copper cable, from moisture, environmental hazards and other potential contaminants. The precision engineered OSP closures support many FTTx (Fiber-to-the-X) and 4G/5G applications and are deployed at various points in the network—deadend, middle-mile and last-mile—but primarily are used in modern FTTH (Fiber-to-the-Home) applications. In addition to the OSP closures, the Company supplies demarcation related products that include wall boxes, pre-terminated cabinets, wall plates and passive components that are typically deployed at residences, businesses or MDUs (Multi-dwelling units). The Company supplies formed wire products, utility pole line hardware, motion control products and cable storage devices used to hold, support, protect and terminate various cable types that are used to transfer voice, video or data signals. These communications products serve all segments of the telecommunications industry including but not limited to network operators, broadband service providers, wireless internet service providers, enterprise networks, educational institutions, and electric utilities deploying fiber optics. Communications products were approximately 22%, 22%, and 29% of the Company’s revenues in 2025, 2024 and 2023, respectively.