X0609 4 2026-08-03 0 0000080035 PREFORMED LINE PRODUCTS CO PLPC 0001257493 RUHLMAN RANDALL M false 660 BETA DRIVE MAYFIELD VILLAGE OH 44143 0 0 1 0 0 Common shares, $2 par value 2026-08-03 2026-08-03 4 J 0 9121 358.15 D 451751 D Common shares, $2 par value 2026-08-03 2026-08-03 4 J 0 9121 358.15 A 414321 I by trust Common Shares, $2 par value per share 146769 I by trust The reported transaction reflects the sale and transfer of common shares from The Randall M. Ruhlman Declaration of Trust 1, dated December 10, 2020, of which the reporting person is beneficiary and trustee, to the Barbara P. Ruhlman Irrevocable Trust FBO Randall M. Ruhlman, dated August 27, 2024. The transaction was effected at a purchase price equal to the fair market value of the issuer's common shares on the date of transfer, as determined by the closing market price. The transaction constituted an exchange of cash for stock between the two trusts, each of which is administered by Randall M. Ruhlman as trustee and is for the benefit of the reporting person and his descendants and was undertaken for estate planning purposes. /s/Caroline S. Vaccariello, by power of attorney 2026-08-04