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 theSecurities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submittedpursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smallerreporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition periodfor complying with any 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). Yes☐No☒ As of April 9, 2026, there were 9,492,001 shares of common stock of the registrant outstanding. NORTHERN TECHNOLOGIES INTERNATIONAL CORPORATIONFORM 10-QFebruary 28, 2026 TABLE OF CONTENTS PART I – FINANCIAL INFORMATIONItem1.Financial StatementsConsolidated Balance Sheets as of February 28, 2026 (unaudited) and August 31, 2025 (audited)1Consolidated Statements of Operations (unaudited) for the Three and Six Months Ended February 28, 2026 and20252Consolidated Statements of Comprehensive Income (Loss) (unaudited) for the Three and Six Months EndedFebruary 28, 2026 and 20253Consolidated Statements of Equity (unaudited) for the Three and Six Months Ended February 28, 2026 and 20254Consolidated Statements of Cash Flows (unaudited) for the Six Months Ended February 28, 2026 and 20255Notes to Consolidated Financial Statements (unaudited)6Item2.Management’s Discussion and Analysis of Financial Condition and Results of Operations19Item3.Quantitative and Qualitative Disclosures About Market Risk35Item4.Controls and Procedures36PART II – OTHER INFORMATIONItem1.Legal Proceedings37Item1A.Risk Factors37Item2.Unregistered Sales of Equity Securities and Use of Proceeds37Item3.Defaults Upon Senior Securities38Item4.Mine Safety Disclosures38Item5.Other Information38Item6.Exhibits39SIGNATURES40 safe harbor created by those sections. For more information, see“Part I. Financial Information–Item 2. Management’sDiscussion and Analysis of Financial Condition and Results of Operations–Forward-Looking Statements.” As used in this report, references to“NTIC,”the“Company,”“we,”“our”or“us,”unless the context otherwise requires, refer toNorthern Technologies International Corporation and its wholly owned and majority-owned subsidiaries, all of which are As used in this report, references to: (1)“NTIC China”refer to NTIC’s wholly owned subsidiary in China, NTIC (Shanghai) Co.,Ltd.; (2)“NTI Europe”refer to NTIC’s wholly owned subsidiary in Germany, NTIC Europe GmbH; (3)“Zerust Mexico”refer toNTIC’s wholly owned subsidiary in Mexico, ZERUST-EXCOR MEXICO, S. de R.L. de C.V.; (4)“Zerust India”refer to NTIC’swholly owned subsidiary in India, HNTI Limited (formerly Harita-NTI Limited); and (5)“NTI Asean”refer to NTIC’s majority-owned holding company subsidiary, NTI Asean LLC, which holds investments in certain entities that operate in the Association ofSoutheast Asian Nations (ASEAN) region. references in this report to NTIC’s joint ventures do not include any of NTIC’s wholly owned or majority-owned subsidiaries. As used in this report, references to“EXCOR”refer to NTIC’s joint venture in Germany, Excor Korrosionsschutz–Technologienund Produkte GmbH. All trademarks, trade names or service marks referred to in this report are the property of their respective owners. NORTHERN TECHNOLOGIES INTERNATIONAL CORPORATION AND SUBSIDIARIESNOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED) 1.INTERIM FINANCIAL INFORMATION In the opinion of management, the accompanying unaudited consolidated financial statements contain all necessary adjustments,which are of a normal recurring nature, and present fairly the consolidated financial position of Northern TechnologiesInternational Corporation and its subsidiaries (the Company) as of February 28, 2026 and August 31, 2025 and the results of theCompany’s operations for the three and six months ended February 28, 2026 and 2025, the changes in stockholders’ equity for the These consolidated financial statements should be read in conjunction with the consolidated financial statements and related notescontained in the Company’s annual report on Form 10-K for the fiscal year ended August 31, 2025. These consolidated financial Operating results for the three and six months ended February 28, 2026 are not necessarily