Valmont Industries Investor Presentation — July 2020

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Valmont Industries, Inc.

Second Quarter Earnings Presentation

Disclosure Regarding Forward- Looking Statements

These slides contain (and the accompanying oral discussion will contain) “forward-looking statements”

within the meaning of the Private Securities Litigation Reform Act of 1995. Such statements involve known and unknown risks, uncertainties and other factors that could cause the actual results of the Company to differ materially from the results expressed or implied by such statements, including general economic and business conditions, conditions affecting the industries served by the Company and its subsidiaries including the continuing and developing effects of COVID -19 including the effects of

the outbreak on the general economy and the specific economic effects on the Company’s business and that of its customers and suppliers, competitor responses to the Company’s products and services,

the overall market acceptance of such products and services, the integration of acquisitions and other factors disclosed in the Company’s periodic reports filed with the Securities and Exchange Commission. Consequently such forward-looking statements should be regarded as the Company’s current plans, estimates and beliefs. The Company does not undertake and specifically declines any obligation to publicly release the results of any revisions to these forward-looking statements that may be made to reflect any future events or circumstances after the date of such statements or to reflect the occurrence of anticipated or unanticipated events.

2| July 23, 2020 | Valmont Industries, Inc. | 2Q 2020 Earnings PresentationSTEVE KANIEWSKI

PRESIDENT & CHIEF EXECUTIVE OFFICER

3| July 23, 2020 | Valmont Industries, Inc. | 2Q 2020 Earnings Presentation2Q 2020 Segment Revenue and Segment Summaries

Strong Second Quarter Operating Performance Despite COVID

4| July 23, 2020 | Valmont Industries, Inc. | 2Q 2020 Earnings Presentation

SEGMENT SUMMARIESTOTAL 2Q 2020 REVENUE: $688.8M

N.A.: $99.0M | International: $51.6M

•Continued gov’t investments strengthened

transportation market demand boasting solid sales growth in lighting and traffic products for North America

•Wireless communication sales grew 7%+ from continued carrier spending in North America and 5G project sales in Europe

•Access Systems sales were lower YoY due to strategic decision to exit certain product lines and pandemic -led factory shutdowns•Continued strong market demand across all

structure types amid ongoing investments to

•Strategic capacity additions

•International sales flat YoY

•Strong global backlog of ~$650M, which includes a large lattice structure order of ~$17M