Note 8 - Stockholders' Equity	3 Months Ended
Nov. 30, 2020
Notes to Financial Statements
Stockholders' Equity Note Disclosure [Text Block]	8. STOCKHOLDERS’ EQUITY On April 23, 2020, the Company announced the temporary suspension of its quarterly cash dividend pending clarity on the financial impact of COVID-19 on the Company. Therefore, the Company did not declare a cash dividend during the three months ended November 30, 2020. On October 22, 2019, the Company’s Board of Directors declared a cash dividend of $0.065 per share of NTIC’s common stock, payable on November 20, 2019 to stockholders of record on November 6, 2019. During the three months ended November 30, 2020 and 2019, the Company repurchased no shares of its common stock. During the three months ended November 30, 2020, the Company granted stock options under the Northern Technologies International Corporation 2019 Stock Incentive Plan (the 2019 Plan) to purchase an aggregate of 419,874 shares of its common stock to various employees and directors. The weighted average per share exercise price of the stock options is $8.24. The exercise price of the stock options is equal to the fair market value of the Company’s common stock on the date of grant. During the three months ended November 30, 2020, no stock options to purchase common stock were exercised. During the three months ended November 30, 2019, the Company granted stock options under the 2019 Plan to purchase an aggregate of 300,770 shares of its common stock to various employees and directors. The weighted average per share exercise price of these stock options is $10.80. During the three months ended November 30, 2020, no stock options to purchase common stock were exercised. The Company issued 4,646 and 3,597 shares of common stock on September 1, 2020 and 2019, respectively, under the Northern Technologies International Corporation Employee Stock Purchase Plan (the ESPP).

Note 8 - Stockholders' Equity

3 Months Ended

Nov. 30, 2020

Stockholders' Equity Note Disclosure [Text Block]

8. STOCKHOLDERS’ EQUITY

On April 23, 2020, the Company announced the temporary suspension of its quarterly cash dividend pending clarity on the financial impact of COVID-19 on the Company. Therefore, the Company did not declare a cash dividend during the three months ended November 30, 2020. On October 22, 2019, the Company’s Board of Directors declared a cash dividend of $0.065 per share of NTIC’s common stock, payable on November 20, 2019 to stockholders of record on November 6, 2019.

During the three months ended November 30, 2020 and 2019, the Company repurchased no shares of its common stock.

During the three months ended November 30, 2020, the Company granted stock options under the Northern Technologies International Corporation 2019 Stock Incentive Plan (the 2019 Plan) to purchase an aggregate of 419,874 shares of its common stock to various employees and directors. The weighted average per share exercise price of the stock options is $8.24. The exercise price of the stock options is equal to the fair market value of the Company’s common stock on the date of grant. During the three months ended November 30, 2020, no stock options to purchase common stock were exercised.

During the three months ended November 30, 2019, the Company granted stock options under the 2019 Plan to purchase an aggregate of 300,770 shares of its common stock to various employees and directors. The weighted average per share exercise price of these stock options is $10.80. During the three months ended November 30, 2020, no stock options to purchase common stock were exercised.

The Company issued 4,646 and 3,597 shares of common stock on September 1, 2020 and 2019, respectively, under the Northern Technologies International Corporation Employee Stock Purchase Plan (the ESPP).