UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D. C. 20549

FORM 8-K

CURRENT REPORT PURSUANT

TO SECTION 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): February 21, 2024

McGRATH RENTCORP

(Exact name of registrant as specified in its Charter)

California

(State or other jurisdiction

of incorporation)

(925) 606-9200

(Registrant’s Telephone Number, Including Area Code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

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 13(a) of the Exchange Act. ☐

Item 7.01 Regulation FD Disclosure

As previously disclosed, on January 28, 2024, McGrath RentCorp, a California corporation (the “Company or “McGrath”) entered into an Agreement and Plan of Merger (the “Merger Agreement”) by and among the Company, WillScot Mobile Mini Holdings Corp., a Delaware corporation (“WillScot Mobile Mini”), Brunello Merger Sub I, Inc., a California corporation and a direct wholly owned subsidiary of WillScot Mobile Mini (“Merger Sub I”), and Brunello Merger Sub II, LLC, a Delaware limited liability company and direct wholly owned subsidiary of WillScot Mobile Mini (“Merger Sub II”). The Merger Agreement provides that, upon the terms and subject to the conditions set forth therein, Merger Sub I will merge with and into the Company (the “First-Step Transaction”), with the Company surviving the First-Step Transaction and, immediately thereafter, the Company will merge with and into Merger Sub II (the “Second-Step Transaction”), with Merger Sub II surviving the Second-Step Transaction as a wholly owned subsidiary of WillScot Mobile Mini (and together with the issuance of the common stock of WillScot Mobile Mini as set forth in the Merger Agreement, collectively, the “Transaction”).

On February 21, 2024, the Company and WillScot Mobile Mini each received a request for additional information and documentary materials (a “Second Request”) from the Federal Trade Commission (“FTC”) in connection with the FTC’s review of the Transaction. The effect of a Second Request is to extend the waiting period imposed by the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended (the “HSR Act”), until 30 days after the Company and WillScot Mobile Mini each have substantially complied with the Second Request issued to it, unless that period is extended by agreement or terminated sooner by the FTC. The parties expect to promptly respond to the Second Requests and to continue to work cooperatively with the FTC in its review of the Transaction. Completion of the Transaction remains subject to the expiration or termination of the waiting period under the HSR Act, approval of the Transaction by the requisite vote of the Company’s shareholders and the satisfaction or waiver of the other closing conditions specified in the Merger Agreement.

Forward-Looking Statements

Certain information set forth herein, including statements as to the timing and completion of the proposed Transaction and the progress with the FTC, constitutes forward-looking statements within the meaning of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Actual results or developments may differ materially from those projected or implied in these statements. Such statements are based upon the current beliefs and expectations of the management of the Company and are subject to significant risks and uncertainties outside of our control. Among the risks and uncertainties that could cause actual results to differ from those described in the forward-looking statements are the following: the occurrence of any event, change or other circumstances that could give rise to the termination of the Merger Agreement; the risk that the necessary regulatory approvals may not be obtained or may be obtained subject to conditions that are not anticipated; risks that any of the other closing conditions to the proposed Transaction may not be satisfied in a timely manner; risks related to potential litigation brought in connection with the proposed Transaction; negative perceptions of the Company and its business, operations, financial condition and the industry in which it operates as a result of the proposed Transaction; risks related to disruption of management time from ongoing business operations due to the proposed Transaction; effects of the announcement, pendency or completion of the proposed Transaction on the ability of the Company to retain customers and retain and hire key personnel and maintain relationships with suppliers and partners, and on the Company’s operating results and businesses generally; and risks related to the potential impact of general economic, political and market factors on the parties to the proposed Transaction or the proposed Transaction. Discussions of additional risks and uncertainties are contained in the Company’s filings with the Securities and Exchange Commission (the “SEC”). The Company is under no obligation, and expressly

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disclaims any obligation, to update, alter, or otherwise revise any forward-looking statements, whether written or oral, that may be made from time to time, whether as a result of new information, future events, or otherwise. Persons reading this document are cautioned not to place undue reliance on these forward-looking statements which speak only as of the date hereof.

Additional Information and Where to Find It

This Current Report on Form 8-K is for informational purposes only and does not constitute an offer to buy or sell or the solicitation of an offer to buy or sell any securities or a solicitation of any vote or approval. This communication relates to the proposed Transaction. In connection with the proposed Transaction, WillScot Mobile Mini will file a registration statement on Form S-4, which will contain a proxy statement of McGrath and a prospectus of WillScot Mobile Mini (the “proxy statement/prospectus”), and each party will file other documents regarding the proposed Transaction with the SEC from time to time. No offering of securities shall be made, except by means of a prospectus meeting the requirements of Section 10 of the U.S. Securities Act of 1933, as amended. INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE PROXY STATEMENT/PROSPECTUS AND OTHER RELEVANT DOCUMENTS FILED WITH THE SEC CAREFULLY AND IN THEIR ENTIRETY, IF AND WHEN THEY BECOME AVAILABLE, BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION THAT STOCKHOLDERS SHOULD CONSIDER BEFORE MAKING ANY DECISION REGARDING THE PROPOSED TRANSACTION. A definitive proxy statement/prospectus will be sent to McGrath’s shareholders. Investors and security holders will be able to obtain these documents (if and when available) free of charge from the SEC’s website at www.sec.gov. The documents filed by WillScot Mobile Mini with the SEC may also be obtained free of charge from WillScot Mobile Mini by requesting them by mail at WillScot Mobile Mini, 4646 E Van Buren St., Suite 400, Phoenix, Arizona 85008 Attn: Investor Relations. The documents filed by McGrath RentCorp may also be obtained free of charge from McGrath RentCorp by requesting them by mail at McGrath RentCorp, 5700 Las Positas Road, Livermore, California 94551 Attn: Investor Relations.

Participants in the Solicitation

WillScot Mobile Mini, McGrath and their respective directors and executive officers and other members of management and employees and certain of their respective significant stockholders may be deemed to be participants in the solicitation of proxies in respect of the proposed Transaction. Information about WillScot Mobile Mini’s directors and executive officers is available in WillScot Mobile Mini’s proxy statement, dated April 17, 2023 for the 2023 Annual Meeting of Stockholders and WillScot Mobile Mini’s Current Reports on Form 8-K and 8-K/A filed with the SEC on August 9, 2023 and December 4, 2023. Information about McGrath’s directors and executive officers is available in McGrath’s proxy statement, dated April 28, 2023, for its 2023 Annual Meeting of Shareholders. Information regarding the persons who may, under the rules of the SEC, be deemed participants in the proxy solicitation and a description of their direct and indirect interests, by security holding or otherwise, will be contained in the proxy statement/prospectus and other relevant materials to be filed with the SEC regarding the proposed Transaction if and when they become available. Investors should read the proxy statement/prospectus carefully if and when it becomes available before making any voting or investment decisions. You may obtain free copies of these documents from the SEC, WillScot Mobile Mini or McGrath as indicated above.

No Offer or Solicitation

This Current Report on Form 8-K shall not constitute an offer to sell or the solicitation of an offer to buy any securities, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offering of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended.

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SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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