X0306 4 2021-04-20 0 0000080035 PREFORMED LINE PRODUCTS CO PLPC 0001809722 Klaus Andrew S 660 BETA DRIVE MAYFIELD VILLAGE OH 44143 0 1 0 0 CFO Common shares, $2 par value 2021-04-20 4 P 0 12 68.21 A 4054 D Employee stock option (right to buy) 47.24 2021-04-09 2030-04-09 Common Shares, $2 par value 10000 10000 D Restricted stock units 0.00 Common Shares, $2 par value 1783 1783 D This transaction reflects an automatic dividend reinvestment. On April 10, 2020, the Reporting Person was granted 10,000 stock options, of which 5,000 vested on April 9, 2021, 2,500 will vest on April 9, 2022, and the remaining 2,500 will vest on April 9, 2023. Restricted stock units convert into common stock on a one-for-one basis. Restricted stock units vest 3 years from the date of grant. /s/ Andrew S. Klaus 2021-04-21