Note 9 - Stockholders' Equity

9 Months Ended

May 31, 2017

Notes to Financial Statements

Stockholders' Equity Note Disclosure [Text Block]

9.

       STOCKHOLDERS’ EQUITY

During the

nine

months ended

May 31, 2017,

the Company repurchased and retired

14,525

shares of its common stock at a price of

$13.51

per share.

During the

nine

months ended

May 31, 2017,

stock options to purchase an aggregate of

4,000

shares of common stock at an exercise price of

$10.25

per share were exercised.

During the

nine

months ended

May 31, 2017,

the Company granted stock options under the Northern Technologies International Corporation Amended and Restated

2007

Stock Incentive Plan (the

2007

Plan) to purchase an aggregate of

56,677

shares of its common stock to various employees and directors. The weighted average per share exercise price of the stock options was

$13.40,

which was equal to the fair market value of the Company’s common stock on the date of grant.

During the

nine

months ended

May 31, 2016,

the Company repurchased and retired

7,511

shares of its common stock at a price of

$12.98

per share.

During the

nine

months ended

May 31, 2016,

no

stock options to purchase shares of common stock were exercised.

During the

nine

months ended

May 31, 2016,

the Company granted stock options under the

2007

Plan to purchase an aggregate of

53,447

shares of its common stock to various employees and directors. The weighted average per share exercise price of the stock options was

$14.85,

which is equal to the fair market value of the Company’s common stock on the date of grant.