First Supplemental Indenture, dated November 16, 2018, among KLX Energy Services Holdings, Inc., as the issuer, the Guaranteeing Subsidiaries named therein and Wilmington Trust, National Association, as trustee and collateral agent

Exhibit 4.1.1

FIRST SUPPLEMENTAL INDENTURE

First Supplemental Indenture (this “Supplemental Indenture”), dated as of November 16, 2018, among Motley Services, LLC, Motley Perforators, LLC, Motley Coil, LLC, Motley Pressure Control, LLC, and Motley Downhole, LLC (each a “Guaranteeing Subsidiary” and collectively, the “Guaranteeing Subsidiaries”), each a subsidiary of KLX Energy Services Holdings, Inc., a Delaware corporation (the “Company”), Wilmington Trust, National Association, as trustee (the “Trustee”) and Wilmington Trust, National Association, as notes collateral agent (the “Collateral Agent”).

W I T N E S S E T H

WHEREAS, each of the Issuer and the Guarantors (as defined in the Indenture referred to below) has heretofore executed and delivered to the Trustee an indenture (the “Indenture”), dated as of October 31, 2018, providing for the issuance of an unlimited aggregate principal amount of 11.500% Senior Secured Notes due 2025 (the “Notes”);

WHEREAS, the Indenture provides that under certain circumstances the Guaranteeing Subsidiaries shall execute and deliver to the Trustee a supplemental indenture pursuant to which each of the Guaranteeing Subsidiaries shall unconditionally Guarantee all of the Issuer’s Obligations under the Notes and the Indenture on the terms and conditions set forth herein and under the Indenture; and

WHEREAS, pursuant to Section 9.1 of the Indenture, the Trustee and the Collateral Agent are authorized to execute and deliver this Supplemental Indenture.

NOW THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt of which is hereby acknowledged, the parties mutually covenant and agree for the equal and ratable benefit of the Holders as follows:

[Signature pages follows]

IN WITNESS WHEREOF, the parties hereto have caused this Supplemental Indenture to be duly executed, all as of the date first above written.