☒QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF1934 for the quarterly period ended November 30, 2025 TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF1934 for the transition period from ______ to ______Commission File No. 1-13146 THE GREENBRIER COMPANIES, INC. (Exact name of registrant as specified in its charter) (503) 684-7000(Registrant’s telephone number, including area code) Securities registered pursuant to Section 12(b) of the Act: Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject tosuch filing requirements for the past 90 days. Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required tosubmit such files). Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company,or an emerging growth company. See definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerginggrowth company” in Rule 12b-2 of the Exchange Act. Large accelerated filer☒Non-accelerated filer☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying withany new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). The number of shares of the registrant’s common stock, without par value, outstanding on January 2, 2026 was 30,886,163 shares. Table of Contents Forward-Looking Statements Item 1.Condensed Consolidated Financial Statements4Condensed Consolidated Balance Sheets4Condensed Consolidated Statements of Income5Condensed Consolidated Statements of Comprehensive Income6Condensed Consolidated Statements of Equity7Condensed Consolidated Statements of Cash Flows8Notes to Condensed Consolidated Financial Statements9Item 2.Management’s Discussion and Analysis of Financial Condition and Results of Operations23Item 3.Quantitative and Qualitative Disclosures About Market Risk35Item 4.Controls and Procedures35 PART II.OTHER INFORMATION Item 1.Legal ProceedingsItem 1A.Risk FactorsItem 2.Unregistered Sales of Equity Securities and Use of ProceedsItem 5.Other InformationItem 6.ExhibitsSignatures 363636363738 Forward-Looking Statements This Quarterly Report on Form 10-Q contains forward-looking statements. All statements, other than statements of historical factincluded in this report, concerning our plans, objectives, goals, strategies, future events, future performance, financing needs,backlog, capital expenditures, plans or intentions relating to business trends and other information referred to under "Management'sDiscussion and Analysis of Financial Condition and Results of Operations" are forward-looking statements. We use words such as“affect,” “anticipate,” “assume,” “backlog,” “be,” “believe,” “can,” “contingent,” “conclude,” “continue,” “could,” “due to,”“estimate,”“expect,”“forecast,”“future,”“impact,”“intend,”“likely,”“may,”“opinion,”“optimize,”“plan,”“potential,”“schedule,” “target,” “trend,” “realize,” “result,” “seek,” “strategy,” “will,” “would,” and similar expressions to identify forward-looking statements. Forward-looking statements are not guarantees of future performance. Forward-looking statements are based on our current expectations and beliefs and on currently available operating, financial andmarket information and are subject to various risks and uncertainties, many of which, by their nature, are inherently uncertain andbeyond our control. Our expectations and beliefs are expressed in good faith and we believe there is a reasonable basis for them.However, there can be no assurance that our expectations or beliefs will result or be achieved and actual future results and trendsmay differ materially from what is expressed in or indicated by the forward-looking statements. There are a number of risks, uncertainties and other important factors that could cause our actual results to differ materially fromthe forward-looking statements contained in this report. Such risks, uncertainties and important factors include but are not limited tothose described in more detail in Part I Item 1A “Risk Factors” in our most recent Annual Report on Form 10-K which areincorporated herein by reference. You should evaluate all forward-looking statements made in this report in the context of theserisks, uncertainties and fa