Supplemental Indenture, dated July 1, 2020, to the Indenture dated June 15, 2020, by and among Williams Scotsman International, Inc. (WSII) (as successor to Picasso Finance Sub, Inc.), the guarantors party thereto and Deutsche Bank Trust Company Americas, as trustee

Exhibit 4.1

WILLIAMS SCOTSMAN INTERNATIONAL, INC.

as Issuer

and

THE GUARANTORS PARTY HERETO

6.125% SENIOR SECURED NOTES DUE 2025

SUPPLEMENTAL INDENTURE

DATED AS OF JULY 1, 2020

DEUTSCHE BANK TRUST COMPANY AMERICAS

as Trustee and Collateral Agent

This SUPPLEMENTAL INDENTURE, dated as of July 1, 2020 is by Williams Scotsman International, Inc., a Delaware corporation (the “Company”), each of the parties identified under the caption “Guarantors” on the signature page hereto (the “Guarantors”), Deutsche Bank Trust Company Americas, as trustee (in such capacity and not in its individual capacity, the “Trustee”) and Deutsche Bank Trust Company Americas, as collateral agent (in such capacity and not in its individual capacity, the “Collateral Agent”).

RECITALS

WHEREAS, the Picasso Finance Sub, Inc., a Delaware corporation (the “Escrow Issuer”), the Trustee and the Collateral Agent entered into an Indenture, dated as of June 15, 2020 (the “Indenture”), pursuant to which the Escrow Issuer initially issued $650,000,000 in principal amount of 6.125% Senior Secured Notes due 2025 (the “Notes”);

WHEREAS, Section 4.22 of the Indenture provides that following satisfaction of the Escrow Conditions, the Escrow Issuer will merge with and into the Company, with the Company surviving, and the Company and the Guarantors will execute a supplemental indenture to assume all of the Escrow Issuer’s obligations and rights under the Indenture and the Guarantors will become Guarantors under the Indenture;

WHEREAS, on the date hereof, the Escrow Issuer is merging with and into the Company, the Company being the surviving Person of such merger and the Escrow Issuer ceasing to exist (the “Merger”);

WHEREAS, Section 9.1(2) of the Indenture provides that the Trustee and the Collateral Agent may supplement the Indenture in order to evidence the succession of another Person and the assumption by any such successor of the covenants and other obligations under the Indenture, without the consent of the Holders; and

WHEREAS, all acts and procedures prescribed by the Indenture to make this Supplemental Indenture a legally valid and binding instrument on the Company, the Guarantors, the Trustee and the Collateral Agent, in accordance with its terms, have been duly done and performed;

NOW, THEREFORE, in compliance with the provisions of the Indenture and in consideration of the above premises, the Company, the Guarantors, the Trustee and the Collateral Agent covenant and agree for the equal and proportionate benefit of the respective Holders of the Notes as follows:

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

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