Preformed Line Products Company (PLPC) investor relations material

Executive summary

• Annual meeting scheduled for May 4, 2026, to elect four directors, hold an advisory vote on executive compensation, and ratify Ernst & Young LLP as auditor.

• Shareholders of record as of March 5, 2026, are eligible to vote; quorum requires a majority of voting power present.

• Proxy materials and annual report are available online; voting can be done by mail, online, or phone.

Voting matters and shareholder proposals

• Four directors nominated for terms expiring in 2028; nominees recommended by a majority of independent directors.

• Advisory vote on executive compensation and ratification of Ernst & Young LLP as independent auditor for 2026.

• No other shareholder proposals or matters are anticipated at the meeting.

• Shareholder proposals for the 2027 meeting must be received by November 20, 2026, for inclusion.

Board of directors and corporate governance

• Board consists of eight directors, classified into two classes with staggered two-year terms.

• Board committees: Audit, Compensation, and Nominating, each with independent members and written charters.

• All directors attended at least 75% of meetings in 2025; directors are expected to attend annual meetings.

• Code of Conduct applies to all directors, officers, and employees; waivers disclosed on the company website.