Company: PLPC
Filing Date: 2025-06-27
Form Type: S-8 POS
Source: 0001628280-25-033298
Chunk: 1

Company: PREFORMED LINE PRODUCTS CO
Filing Date: 2025-06-27
Form: S-8 POS
Chunk 1
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 registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer ☐ Accelerated filer ☒

Non-accelerated filer ☐ Smaller reporting company ☐

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 7(a)(2)(B) of the Securities Act. ☐

### DEREGISTRATION OF SECURITIES
These Post-Effective Amendments relate to the Registration Statements on Form S-8, File Nos. 333-73690, 333-153263, and 333-173986 (the "Registration Statements"), of Preformed Line Products Company (the "Registrant"). The Registrant is filing these Post-Effective Amendments relating to the employee benefit plans listed on the cover page of this Form S-8, which have expired, solely to deregister any and all securities previously registered under the Registration Statements with respect to such plans that remain unsold as of the date hereof and to terminate the effectiveness of the Registration Statements with respect to such plans.

#### Item

#### 8.

#### Exhibits.
| Exhibit Number |     | Description                                                                      |
| 24.1           |     | Power of Attorney (included in the signature to these Post-Effective Amendments) |

#### SIGNATURES
Pursuant to the requirements of the Securities Act, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused these Post-Effective Amendments to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Mayfield Village, State of Ohio, on June 27, 2025.

|       |     | Preformed Line Products Company |
| By:   |     | Robert G. Ruhlman               |
| Name: |     | Robert G. Ruhlman               |
| Title |     | Executive Chairman              |
|       |     | -Principal Executive Officer    |

#### POWER

#### OF

### ATTORNEY
KNOW ALL PERSON