UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM 10-QSB

               Quarterly Report Pursuant to Section 13 or 15(d) of
                       The Securities Exchange Act of 1934

For the Quarterly Period Ended:                  Commission File Number
      November 30, 2002                                 1-11038

                 NORTHERN TECHNOLOGIES INTERNATIONAL CORPORATION
             (Exact name of registrant as specified in its charter)

       Delaware                                        41-0857886
(State of Incorporation)                 (I.R.S. Employer Identification Number)

                    6680 N. Highway 49, Lino Lakes, MN 55014
                    (Address of principal executive offices)

                                 (651) 784-1250
                        (Registrant's telephone number)

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 of 1934 during
the preceding 12 months (or for such shorter period that the Registrant was
required to file such reports) and (2) has been subject to such filing
requirements for the past 90 days.

                               YES |X|     NO |_|

Indicate the number of shares outstanding of each of the issuer's classes of
common stock, as of the latest practicable date.

           Class                              Outstanding as of January 20, 2003
Common Stock, $.02 par value                              3,635,751

                                              This document consists of 19 pages

PART I - FINANCIAL INFORMATION ITEM 1 - FINANCIAL STATEMENTS NORTHERN TECHNOLOGIES INTERNATIONAL CORPORATION AND SUBSIDIARY CONSOLIDATED BALANCE SHEETS (Unaudited) - -------------------------------------------------------------------------------- November 30, August 31, 2002 2002 ASSETS CURRENT ASSETS: Cash and cash equivalents $ 243,721 $ 230,274 Investments available for sale 3,055,210 4,008,417 Receivables: Trade excluding international corporate joint ventures, less allowance for doubtful account of $11,000 and $12,477, respectively 920,407 1,009,674 Trade international corporate joint ventures 368,046 239,967 Technical and other services international corporate joint ventures 631,109 625,294 Income taxes 166,994 61,925 Inventories 924,119 859,228 Prepaid expenses and other 132,489 85,367 Deferred income taxes 45,000 45,000 ------------ ------------ Total current assets 6,487,095 7,165,146 PROPERTY AND EQUIPMENT, net 406,208 409,780 OTHER ASSETS: Investments in international corporate joint ventures 5,181,925 4,919,600 Investment in European holding company -- 30,812 Investment in and note receivable from German corporation 219,885 260,225 Deferred income taxes 395,000 395,000 Other 1,249,121 906,880 ------------ ------------ 7,045,931 6,512,517 ------------ ------------ $ 13,939,234 $ 14,087,443 ============ ============ LIABILITIES AND STOCKHOLDERS' EQUITY CURRENT LIABILITIES: Accounts payable $ 242,441 $ 492,102 Dividends payable 309,204 -- Accrued liabilities: Payroll and related benefits 48,408 97,380 Other 281,102 298,730 ------------ ------------ Total current liabilities 881,155 888,212 DEFERRED GROSS PROFIT 25,000 25,000 COMMITMENTS AND CONTINGENCIES STOCKHOLDERS' EQUITY: Preferred stock, no par value, authorized 10,000 shares, none issued Common stock, $.02 par value per share; authorized 10,000,000 shares; issued and outstanding 3,635,751 and 3,644,551, respectively 72,715 72,891 Additional paid-in capital 4,211,082 4,228,682 Retained earnings 9,256,490 9,322,258 Accumulated other comprehensive loss (see Note 8) (507,208) (449,600) ------------ ------------ Total stockholders' equity 13,033,079 13,174,231 ------------ ------------ $ 13,939,234 $ 14,087,443 ============ ============ See notes to consolidated financial statements. 2

NORTHERN TECHNOLOGIES INTERNATIONAL CORPORATION AND SUBSIDIARY CONSOLIDATED STATEMENTS OF INCOME (Unaudited) THREE MONTHS ENDED NOVEMBER 30, 2002 AND 2001 - -------------------------------------------------------------------------------- 2002 2001 SALES ORIGINATING IN NORTH AMERICA $ 1,981,071 $ 2,042,238 COST OF GOODS SOLD 916,592 921,771 ----------- ----------- GROSS PROFIT 1,064,479 1,120,467 OPERATING EXPENSES: Selling 477,740 269,276 General and administrative 452,590 466,901 Research, engineering, and technical support 210,710 190,096 ----------- ----------- 1,141,040 926,273 ----------- ----------- OPERATING (LOSS) INCOME (76,561) 194,194 INTERNATIONAL CORPORATE JOINT VENTURES, GERMAN CORPORATION AND EUROPEAN HOLDING COMPANY: Equity in income of international corporate joint ventures and German corporation 259,185 185,051 Fees for technical support and other service provided to international corporate joint ventures 615,007 569,360 Expenses incurred in support of international corporate joint ventures (568,565) (295,858) ----------- ----------- 305,627 458,553 INTEREST INCOME 22,254 4,815 ----------- ----------- INCOME BEFORE INCOME TAXES 251,320 657,562 INCOME TAX BENEFIT (EXPENSE) 1,000 (170,000) ----------- ----------- NET INCOME $ 252,320 $ 487,562 =========== =========== NET INCOME PER SHARE: Basic $ .07 $ .13 =========== =========== Diluted $ .07 $ .13 =========== =========== WEIGHTED AVERAGE COMMON SHARES OUTSTANDING: Basic 3,638,530 3,670,870 =========== =========== Diluted 3,638,530 3,670,870 =========== =========== See notes to financial statements. 3

NORTHERN TECHNOLOGIES INTERNATIONAL CORPORATION AND SUBSIDIARY CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) THREE MONTHS ENDED NOVEMBER 30, 2002 AND 2001 - -------------------------------------------------------------------------------- 2002 2001 CASH FLOWS FROM OPERATING ACTIVITIES: Net income $ 252,320 $ 487,562 Adjustments to reconcile net income to net cash used in operating activities: Depreciation 48,625 52,354 Equity in income of international corporate joint ventures and German corporation (259,185) (185,051) Dividends received from international corporate joint ventures 10,404 -- Gain on sale of equipment (3,605) -- Change in current assets and liabilities: Receivables: Trade receivables 89,267 (56,408) Trade receivables, international corporate joint ventures (128,079) (2,557) Technical fee and other services receivables international corporate joint ventures (5,815) 60,656 Income tax receivable (105,069) 86,533 Inventories (64,891) (16,031) Prepaid expenses and other (373,099) (368,183) Accounts payable (249,661) (110,800) Income taxes payable -- 29,930 Accrued liabilities (66,600) (4,253) ----------- ----------- Total adjustments (1,107,708) (513,810) ----------- ----------- Net cash used in operating activities (855,388) (26,248) CASH FLOWS FROM INVESTING ACTIVITIES: Sale of investments 953,207 -- Proceeds from the sale of equipment 3,605 -- Investment in international corporate joint ventures (30,812) -- Additions to property (45,053) (16,048) Partial return of original investment in European holding company 30,812 181,324 Increase in other assets (16,264) (141,500) ----------- ----------- Net cash provided by investing activities 895,495 23,776 CASH FLOWS FROM FINANCING ACTIVITIES: Repurchase of common stock (26,660) (100,000) ----------- ----------- Net cash used in financing activities (26,660) (100,000) ----------- ----------- NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS 13,447 (102,472) CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD 230,274 3,238,283 ----------- ----------- CASH AND CASH EQUIVALENTS AT END OF PERIOD $ 243,721 $ 3,135,811 =========== =========== See notes to financial statements. 4

NORTHERN TECHNOLOGIES INTERNATIONAL CORPORATION AND SUBSIDIARY NOTES 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, to present fairly the consolidated financial position of Northern Technologies International Corporation and Subsidiary (the Company) as of November 30, 2002 and the results of their operations and their cash flows for the three months ended November 30, 2002 and 2001, in conformity with accounting principles generally accepted in the United States of America. These financial statements should be read in conjunction with the financial statements and related notes as of and for the year ended August 31, 2002 contained in the Company's filing on Form 10-KSB dated November 15, 2002 and with Management's Discussion and Analysis of Financial Condition and Results of Operations appearing on pages 7 through 12 of this quarterly report. Certain fiscal year 2002 amounts have been reclassified to conform to fiscal year 2003 presentations. These classifications had no effect on stockholders' equity, sales, or net income as previously reported. 2. RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS In August 2001, the Financial Accounting Standards Board (FASB) issued Statement of Financial Accounting Standards (SFAS) No. 143, Accounting for Asset Retirement Obligations. SFAS No. 143 requires entities to record the fair value of a liability for an asset retirement obligation in the period in which it is incurred. When the liability is initially recorded, the entity capitalizes a cost by increasing the carrying amount of the related long-lived asset. Over time, the liability is accreted to its present value each period, and the capitalized cost is depreciated over the useful life of the related asset. Upon settlement of the liability, an entity either settles the obligation for its recorded amount or incurs a gain or loss upon settlement. SFAS No. 143 is effective for fiscal years beginning after June 15, 2002. The Company adopted SFAS No. 143 effective September 1, 2002. SFAS No. 143 does not have a material impact on the financial position and results of operations. In September 2001, the FASB issued SFAS No. 144, Accounting for the Impairment or Disposal of Long-lived Assets. SFAS No. 144 replaces SFAS No. 121, Accounting for the Impairment of Long-Lived Assets and for Long-Lived Assets to Be Disposed Of. The FASB issued SFAS No. 144 to establish a single accounting model, based on the framework established in SFAS No. 121, as SFAS No. 121 did not address the accounting for a segment of a business accounted for as a discontinued operation under Accounting Principle Board Opinion No. 30, Reporting the Results of Operations - Reporting the Effects of Disposal of a Segment of a Business, and Extraordinary, Unusual and Infrequent Occurring Events and Transactions. SFAS No. 144 also resolves significant implementation issues related to SFAS No. 121. The provisions of SFAS No. 144 are effective for fiscal years beginning after December 15, 2001 and are to be applied prospectively. The Company adopted SFAS No. 144 effective September 1, 2002 which had no impact on the financial position and results of operations. 5

3. INVENTORIES Inventories consist of the following: November 30, August 31, 2002 2002 Production materials $ 345,785 $ 249,596 Work in process 1,737 1,737 Finished goods 576,597 607,895 ---------- ---------- $ 924,119 $ 859,228 ========== ========== 4. PROPERTY AND EQUIPMENT Property and equipment consist of the following: November 30, August 31, 2002 2002 Land $ 29,097 $ 29,097 Buildings and improvements 521,480 521,480 Machinery and equipment 715,086 693,245 ---------- ---------- 1,265,663 1,243,822 Less accumulated depreciation 859,455 834,042 ---------- ---------- $ 406,208 $ 409,780 ========== ========== 5. INVESTMENTS IN INTERNATIONAL CORPORATE JOINT VENTURES During the three months ended November 30, 2002, the Company invested $30,812 in a new corporate joint venture in Holland. This investment was financed by the extinguishment of the investment in the European holding company. The Company has a 50% ownership interest in the new entity. The new entity had no operations prior to the Company's investment. 6. STOCKHOLDERS' EQUITY During the three months ended November 30, 2002, the Company purchased and retired 8,800 shares of common stock for $26,660. 7. SUPPLEMENTAL CASH FLOW INFORMATION During the three months ended November 30, 2002, the Company declared a cash dividend of $.085 per share payable on December 18, 2002 to shareholders of record on December 4, 2002. 6

8. COMPREHENSIVE (LOSS) INCOME The Company's total comprehensive incomes were as follows: Three Months Ended November 30 ---------------------------- 2002 2001 Net income $ 252,320 $ 487,562 Other comprehensive loss - foreign currency translation adjustment (57,608) (97,155) ---------- ---------- Total comprehensive income $ 194,712 $ 390,407 ========== ========== 9. NET INCOME PER SHARE Basic net income per share is computed by dividing net income by the weighted average number of common shares outstanding. Diluted net income per share assumes the exercise of stock options using the treasury stock method, if dilutive. ITEM 2 - MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS Critical Accounting Policies The consolidated financial statements include accounts of the Company and its wholly owned subsidiary. All significant intercompany transactions have been eliminated. Sales Originating in North America - The Company considers sales originating in North America to be all sales shipped/invoiced from the Company's facilities located in Minnesota and Ohio. There are no sales from the international corporate joint ventures included in the amount as the Company's investments in international corporate joint ventures are accounted for using the equity method. Cash Equivalents - The Company considers investments with an original maturity of three months or less to be cash equivalents. Investments Available for Sale - The Company accounts for securities available for sale in accordance with Statement of Financial Accounting Standards No. 115, Accounting for Certain Investments in Debt and Equity Securities ("SFAS No. 115"). SFAS No. 115 requires that available-for-sale securities be carried at fair value, with unrealized gains and losses reported as other comprehensive income within shareholders' investment, net of applicable income taxes. Realized gains and losses and decline in value deemed to be other-than-temporary on available-for-sale securities are included in other income. Fair value of the securities is based upon the quoted market price on the last business day of the quarter or fiscal year. The cost basis for realized gains and losses on available-for-sale securities is determined on a specific identification basis. At November 30, 2002, the Company's securities available for sale consisted of commercial paper, corporate debt, certificate's of deposit and discount notes with a cost value and accrued interest income totaling $3,055,210 which approximates fair value. Inventories - Inventories are recorded at the lower of cost (first-in, first-out basis) or market. 7

Property and Depreciation - Property and equipment are stated at cost. Depreciation is computed using the straight-line method based on the estimated service lives of the various assets as follows: Buildings and improvements 5-20 years Machinery and equipment 3-10 years Investments in International Corporate Joint Ventures and German Corporation - Investments in international corporate joint ventures and German corporation are accounted for using the equity method. Intercompany profits on inventories held by the international corporate joint ventures that were purchased from the Company have been eliminated based on the Company's ownership percentage in each international corporate joint venture. Recoverability of Long-Lived Assets - The Company reviews its long-lived assets whenever events or changes in circumstances indicate the carrying amount of the assets may not be recoverable. The Company determines potential impairment by comparing the carrying value of the assets with expected net cash flows expected to be provided by operating activities of the business or related products. Should the sum of the expected undiscounted future net cash flows be less than the carrying value, the Company would determine whether an impairment loss should be recognized. An impairment loss would be measured by comparing the amount by which the carrying value exceeds the fair value of the asset. As of November 30, 2002, the Company did not consider any of its assets impaired. Income Taxes - The Company utilizes the liability method of accounting for income taxes as set forth in Statement of Financial Accounting Standards (SFAS) No. 109, Accounting for Income Taxes. SFAS No. 109 requires an asset and liability approach to financial accounting and reporting for income taxes. Deferred income tax assets and liabilities are computed annually for differences between the financial statement and tax basis of assets and liabilities that will result in taxable or deductible amounts in the future, based on enacted tax laws and rates applicable to the periods in which the differences are expected to affect taxable income. Valuation allowances are established when necessary to reduce deferred tax assets to the amount expected to be realized. Income tax expense is the tax payable or refundable for the period plus or minus the change during the period in deferred tax assets and liabilities. Foreign Currency Translation (Accumulated Other Comprehensive Loss) - The functional currency of the international corporate joint ventures and the German corporation is the applicable local currency. The translation of the applicable foreign currencies into U.S. dollars is performed for balance sheet accounts using current exchange rates in effect at the balance sheet date and for revenue and expense accounts using an average monthly exchange rate. Translation gains or losses are reported as an element of accumulated other comprehensive loss. Revenue Recognition - In recognizing revenue, the Company applies the provisions of the Securities & Exchange Commission Staff Accounting Bulletin 101, Revenue Recognition. The Company recognizes revenue from the sale of its products when persuasive evidence of an arrangement exists, the product has been delivered, the fee is fixed and determinable and collection of the resulting receivable is reasonably assured. A portion of the gross profit on products shipped to the Company's international corporate joint ventures is deferred until such products are sold by the international corporate joint ventures. Shipping and Handling - The Company records all amounts billed to customers in a sales transaction related to shipping and handling as sales. The Company records costs related to shipping and handling in cost of goods sold. 8

Use of Estimates - The preparation of the financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. RESULTS OF OPERATIONS General - The Company conducts all foreign transactions based on the U.S. dollar, except for its investments in foreign joint ventures and German corporation. The exchange rate differential relating to investments in foreign joint ventures and German corporation is accounted for under the requirements of SFAS No. 52. Sales Originating in North America - Net sales decreased by $61,167 or 3.0% during the first quarter of 2003 from the first quarter of 2002. These changes in sales are due to a decrease in demand for materials science based industrial packaging products. This decrease in demand was due to the slow down in the industrial sector we serve. Cost of Sales - Cost of goods sold as a percentage of net sales were 46.3% and 45.1% for the first quarter of 2003 and 2002, respectively. Variations are due primarily to the mix of product sales and changes in the price of resin. Operating Expenses - As a percentage of net sales, total operating expenses were 57.6% in the first quarter of fiscal 2003 and 45.4% in the first quarter of fiscal 2002. Operating expense classification percentages of net sales were as follows: Three Months Ended ---------------------------------------------- November 30, 2002 November 30, 2001 (Fiscal Year 2003) (Fiscal Year 2002) Selling expense 24% 13% General and administrative 23 23 Research, engineering, and technical support 11 9 Selling Expenses. The Company's selling expenses increased by $208,464 or 77.4% to $477,740 during the first quarter of fiscal 2003 as compared to $269,276 during the same period in fiscal 2002. The increase in selling expenses during the first quarter of fiscal 2003 was primarily related to increases in salary and commission and travel related expenses for sales personnel, and increased expenses related to trade shows. As a percentage of sales these costs increased to 24.1% in the first quarter of fiscal 2003 from 13.2% in the first quarter of fiscal 2002 due to the decreased level of net sales and the overall significant increase in selling expenses in the first quarter of fiscal 2003. General and Administrative Expenses. The Company's general and administrative expenses decreased by $14,311 or 3.1% to $452,590 in the first quarter of fiscal 2003 from $466,901 in the first quarter of fiscal 2002. The decrease is attributed to there being no expenses relating to NIC; the wholly owned subsidiary that ceased operations in fiscal year 2002. Additionally, there was a decrease in total salary expense and increases in legal fees and group insurance expenses. As a percentage of sales, general and 9

administrative expenses decreased to 22.8% in the first quarter of fiscal 2003 from 22.9% in the first quarter of fiscal 2002. Research, Engineering, and Technical Support Expenses. The Company's research, engineering, and technical support expenses increased by $20,614 or 10.8% to $210,710 in the first quarter of fiscal 2003 from $190,096 in the first quarter of fiscal 2002. The increase is attributed to an increase in salary expense related to hiring additional people in technical support and higher group insurance expense. As a result of the Company's international research and development activities, certain proprietary rights to new technology have been added to the Company. As a percentage of sales, research, engineering and technical support expenses increased to 10.6% in the first quarter of fiscal 2003 from 9.3% in the first quarter of fiscal 2002 due to the decreased level of net sales and the slight increase in spending. International Corporate Joint Ventures, German Corporation and European Holding Company - Net earnings from international corporate joint ventures, German corporation and European holding company were $305,627 for the three months ended November 30, 2002, compared to $458,553 for the three months ended November 30, 2001. This decrease is due to increased joint venture expenses, which more than offset the increases in equity in income and fees for technical support and other services. Income Taxes - Income tax benefit (expense) for the three months ended November 30, 2002 and 2001 was calculated based on management's estimate of the Company's annual effective income tax rate. The Company's annual effective income tax rate for fiscal 2003 is lower than the statutory rate primarily due to the Company's equity in income of international corporate joint ventures being recognized based on after-tax earnings of these entities. To the extent joint ventures' undistributed earnings are distributed to the Company, it is not expected to result in any material additional income tax liability after the application of foreign tax credits. LIQUIDITY AND CAPITAL RESOURCES At November 30, 2002, the Company's working capital was $5,605,940, including $243,721 in cash and cash equivalents and $3,055,210 in investments available for sale, compared to a working capital of $6,276,934, including $230,274 in cash and cash equivalents and $4,008,417 in investments available for sale at August 31, 2002. Net cash provided from operations for the past 12 months has been sufficient to meet liquidity requirements, capital expenditures, research and development cost, and expansion of operations of the Company's international joint ventures. Cash flows used in operations for the three months ended November 30, 2002 and 2001 was ($855,388) and ($26,248), respectively. The net cash used in operations for the three months ended November 30, 2002 resulted principally from cash provided from net income, depreciation and trade receivables more than offset by the noncash equity income of foreign investees, and uses of cash for increases in operating assets and reductions of operating liabilities. During the quarter, the Company made a $445,469 deposit relating to a legal case involving potential patent infringement against a competitor in Europe. The Company expects that the amount will be fully recoverable at the conclusion of the prosecution of the competitor. The net cash used in operations for the three months ended November 30, 2001 resulted principally from net income and depreciation, offset by equity income of international corporate joint ventures and European holding company, and increases in prepaid expenses and other. Net cash provided by investing activities for the three months ended November 30, 2002 was $895,495, which resulted from the sales of investments and a partial return of the Company's original investment in European holding company partially offset by investments in international joint ventures, increase in 10

other assets and additions to property and equipment. Net cash provided by investing activities for the three months ended November 30, 2001 was $23,776, which resulted from a partial return of the Company's original investment in European holding company partially offset by an increase in other assets and additions to property and equipment. Net cash used in financing activities for the three months ended November 30, 2002 was $26,660, which resulted from the repurchase of common stock. Net cash used in financing activities for the three months ended November 30, 2001 was $100,000, which resulted from the repurchase of common stock. The Company expects to meet future liquidity requirements by utilizing its existing cash and cash equivalents and investments available for sale combined with cash flows of future operating earnings and distributions of earnings and technical assistance fees from the international corporate joint venture investments. The Company has no long-term debt and no material capital lease commitments at November 30, 2002; however, the Company's subsidiary has entered into a 15-year lease agreement for 16,826 square feet of office, manufacturing, laboratory, and warehouse space requiring monthly payments of $16,434, which can be adjusted annually according to the annual consumer price index through November 2014. The Company has no postretirement benefit plan and does not anticipate establishing any postretirement benefit program. Recently Issued Accounting Pronouncements In August 2001, the Financial Accounting Standards Board (FASB) issued Statement of Financial Accounting Standard (SFAS) No. 143, Accounting for Asset Retirement Obligations. SFAS No. 143 requires entities to record the fair value of a liability for an asset retirement obligation in the period in which it is incurred. When the liability is initially recorded, the entity capitalizes a cost by increasing the carrying amount of the related long-lived asset. Over time, the liability is accreted to its present value each period, and the capitalized cost is depreciated over the useful life of the related asset. Upon settlement of the liability, an entity either settles the obligation for its recorded amount or incurs a gain or loss upon settlement. SFAS No. 143 is effective for fiscal years beginning after June 15, 2002. The Company adopted SFAS No. 143 effective September 1, 2002. SFAS No. 143 does not have an impact on the financial position and results of operations. In September 2001, the FASB issued SFAS No. 144, Accounting for the Impairment or Disposal of Long-lived Assets. SFAS No. 144 replaces SFAS No. 121, Accounting for the Impairment of Long-Lived Assets and for Long-Lived Assets to Be Disposed Of. The FASB issued SFAS No. 144 to establish a single accounting model, based on the framework established in SFAS No. 121, as SFAS No. 121 did not address the accounting for a segment of a business accounted for as a discontinued operation under Accounting Principle Board Opinion No. 30, Reporting the Results of Operations - Reporting the Effects of Disposal of a Segment of a Business, and Extraordinary, Unusual and Infrequent Occurring Events and Transactions. SFAS No. 144 also resolves significant implementation issues related to SFAS No. 121. The provisions of SFAS No. 144 are effective for fiscal years beginning after December 15, 2001 and are to be applied prospectively. The Company adopted SFAS No. 144 effective September 1, 2002, which had no impact on the financial position and results of operations. 11

Disclosure of the Control Environment Within the 90-day period prior to the filing date of this report, management performed an evaluation, of the effectiveness of the design and operation of our disclosure controls and procedures as defined in Exchange Act Rules 13a-14(C) and 15d-14(C). We performed this evaluation under the supervision of, and with participation from, our Chairman of the Board & Co-Chief Executive Officer, President & Co-Chief Executive Officer, and Chief Financial Officer. Based upon that evaluation we, as well as our Chairman of the Board & Co-Chief Executive Officer, President & Co-Chief Executive Officer, and Chief Financial Officer, concluded that our disclosure controls and procedures were effective. There have been no significant changes in our internal controls or in other factors that could significantly affect internal controls subsequent to the date we carried out this evaluation, and therefore we believe that our disclosure controls and procedures remain effective. We intend to periodically evaluate our disclosure controls and procedures as required by the Exchange Act Rules. PART II - OTHER INFORMATION ITEM 1 - LEGAL PROCEEDINGS None ITEM 2 - CHANGES IN SECURITIES None ITEM 3 - DEFAULTS UPON SENIOR SECURITIES None ITEM 4 - SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS None ITEM 5 - OTHER INFORMATION None ITEM 6 - EXHIBITS AND REPORTS ON FORM 8-K (a) Exhibits None; however the written statements of our applicable officers, as required pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, accompanied the filing of this report as correspondence to the Securities and Exchange Commission. (b) Reports on Form 8-K The Company did not file any Current Reports on Form 8-K during the first quarter of fiscal 2003. 12

SIGNATURE PAGE Pursuant to the requirements of the Securities and Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. NORTHERN TECHNOLOGIES INTERNATIONAL CORPORATION Date: January 20, 2003 /s/ Matthew C. Wolsfeld, CPA ---------------------------- Matthew C. Wolsfeld, CPA Chief Financial Officer (Mr. Wolsfeld is the Principal Financial and Accounting Officer and has been duly authorized to sign on behalf of the registrant.) 13

CERTIFICATION PURSUANT TO SECTION 302(A) OF THE SARBANES-OXLEY ACT OF 2002 I, Philip M. Lynch, certify that: 1. I have reviewed this quarterly report on Form 10-QSB of Northern Technologies International Corporation; 2. Based on my knowledge, this quarterly report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this quarterly report; 3. Based on my knowledge, the financial statements, and other financial information included in this quarterly report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this quarterly report; 4. The registrant's other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-14 and 15d-14) for the registrant and we have: (a) designed such disclosure controls and procedures to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this quarterly report is being prepared; (b) evaluated the effectiveness of the registrant's disclosure controls and procedures as of a date within 90 days prior to the filing date of this quarterly report (the "Evaluation Date"); and (c) presented in this quarterly report our conclusions about the effectiveness of the disclosure controls and procedures based on our evaluation as of the Evaluation Date; 5. The registrant's other certifying officers and I have disclosed, based on our most recent evaluation, to the registrant's auditors and the audit committee of registrant's board of directors (or persons performing the equivalent function): (a) all significant deficiencies in the design or operation of internal controls which could adversely affect the registrant's ability to record, process, summarize and report financial data and have identified for the registrant's auditors any material weaknesses in internal controls; and (b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal controls; and 6. The registrant's other certifying officers and I have indicated in this quarterly report whether or not there were significant changes in internal controls or in other factors that could significantly affect internal controls subsequent to the date of our most recent evaluation, including any corrective actions with regard to significant deficiencies and material weaknesses. Date: January 20, 2003 /s/ Philip M. Lynch ------------------------------------ Philip M. Lynch Co-Chief Executive Officer and Chairman of the Board of Directors 14

CERTIFICATION PURSUANT TO SECTION 302(A) OF THE SARBANES-OXLEY ACT OF 2002 I, G. Patrick Lynch certify that: 1. I have reviewed this quarterly report on Form 10-QSB of Northern Technologies International Corporation; 2. Based on my knowledge, this quarterly report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this quarterly report; 3. Based on my knowledge, the financial statements, and other financial information included in this quarterly report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this quarterly report; 4. The registrant's other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-14 and 15d-14) for the registrant and we have: (a) designed such disclosure controls and procedures to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this quarterly report is being prepared; (b) evaluated the effectiveness of the registrant's disclosure controls and procedures as of a date within 90 days prior to the filing date of this quarterly report (the "Evaluation Date"); and (c) presented in this quarterly report our conclusions about the effectiveness of the disclosure controls and procedures based on our evaluation as of the Evaluation Date; 5. The registrant's other certifying officers and I have disclosed, based on our most recent evaluation, to the registrant's auditors and the audit committee of registrant's board of directors (or persons performing the equivalent function): (a) all significant deficiencies in the design or operation of internal controls which could adversely affect the registrant's ability to record, process, summarize and report financial data and have identified for the registrant's auditors any material weaknesses in internal controls; and (b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal controls; and 6. The registrant's other certifying officers and I have indicated in this quarterly report whether or not there were significant changes in internal controls or in other factors that could significantly affect internal controls subsequent to the date of our most recent evaluation, including any corrective actions with regard to significant deficiencies and material weaknesses. Date: January 20, 2003 /s/ G. Patrick Lynch ------------------------------------- G. Patrick Lynch President and Co-Chief Executive Officer 15

CERTIFICATION PURSUANT TO SECTION 302(A) OF THE SARBANES-OXLEY ACT OF 2002 I, Matthew C. Wolsfeld certify that: 1. I have reviewed this quarterly report on Form 10-QSB of Northern Technologies International Corporation; 2. Based on my knowledge, this quarterly report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this quarterly report; 3. Based on my knowledge, the financial statements, and other financial information included in this quarterly report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this quarterly report; 4. The registrant's other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-14 and 15d-14) for the registrant and we have: (a) designed such disclosure controls and procedures to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this quarterly report is being prepared; (b) evaluated the effectiveness of the registrant's disclosure controls and procedures as of a date within 90 days prior to the filing date of this quarterly report (the "Evaluation Date"); and (c) presented in this quarterly report our conclusions about the effectiveness of the disclosure controls and procedures based on our evaluation as of the Evaluation Date; 5. The registrant's other certifying officers and I have disclosed, based on our most recent evaluation, to the registrant's auditors and the audit committee of registrant's board of directors (or persons performing the equivalent function): (a) all significant deficiencies in the design or operation of internal controls which could adversely affect the registrant's ability to record, process, summarize and report financial data and have identified for the registrant's auditors any material weaknesses in internal controls; and (b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal controls; and 6. The registrant's other certifying officers and I have indicated in this quarterly report whether or not there were significant changes in internal controls or in other factors that could significantly affect internal controls subsequent to the date of our most recent evaluation, including any corrective actions with regard to significant deficiencies and material weaknesses. Date: January 20, 2003 /s/ Matthew C. Wolsfeld, CPA ---------------------------- Matthew C. Wolsfeld, CPA Chief Financial Officer 16

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Northern Technologies International Corporation (the "Company") on Form 10-QSB for the period ending November 30, 2002 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Philip M. Lynch, Chairman of the Board and Co-Chief Executive Officer of the company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of my knowledge and belief: (1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and (2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. /s/ Philip M. Lynch Co-Chief Executive Officer and Chairman - ------------------------------ of the Board of Directors (principal Philip M. Lynch executive officer) Lino Lakes, Minnesota January 20, 2003 17

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Northern Technologies International Corporation (the "Company") on Form 10-QSB for the period ending November 30, 2002 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, G. Patrick Lynch, President and Co-Chief Executive Officer of the company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of my knowledge and belief: (3) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and (4) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. /s/ G. Patrick Lynch President and Co-Chief Executive - ------------------------------ Officer (principal executive officer) G. Patrick Lynch Lino Lakes, Minnesota January 20, 2003 18

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Northern Technologies International Corporation (the "Company") on Form 10-QSB for the period ending November 30, 2002 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Matthew C. Wolsfeld, Chief Financial Officer of the company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of my knowledge and belief: (5) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and (6) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. /s/ Matthew C. Wolsfeld, CPA Chief Financial Officer (principal - ---------------------------- financial officer and principal Matthew C. Wolsfeld, CPA accounting officer) Lino Lakes, Minnesota January 20, 2003 19