Preformed Line Products 董事 Glenn E. Corlett 退休，董事会缩减至七人

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

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FORM 8-K

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CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): October 30, 2026

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Preformed Line Products Company

(Exact name of Registrant as Specified in Its Charter)

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Registrant’s Telephone Number, Including Area Code: 440 461-5200

(Former Name or Former Address, if Changed Since Last Report)

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Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 5.02 Departure of Directors or Principal Officers; Election of Directors; Appointment of Principal Officers.

On October 28, 2026, Glenn E. Corlett notified the Board of Directors (the “Board”) of Preformed Line Products Company (the “Company”) that he was retiring from the Board effective as of such date. Mr. Corlett had served as a director since 2004 and served as the Chairman of the Compensation Committee and as a member of the Audit Committee. The Company and the Board greatly appreciate Mr. Corlett’s significant contributions over the last 22 years.

Due to the vacancy created by Mr. Corlett’s retirement, the Board reduced the size of the Board to seven directors. The Board also appointed R. Steven Kestner, a current member of the Board, to serve on the Audit Committee.

Item 9.01 Financial Statements and Exhibits.

(d)Exhibits

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.