Three Months Ended

Nine Months Ended

Numerators:

May 31, 2015

May 31, 2014

May 31, 2015

May 31, 2014

Net income attributable to NTIC

$

905,435

$

980,217

$

1,785,056

$

2,863,847

Denominator:

Basic – weighted shares outstanding

4,525,109

4,461,880

4,519,279

4,452,798

Weighted shares assumed upon exercise of stock options

69,883

128,464

116,282

130,376

Diluted – weighted shares outstanding

4,594,992

4,590,344

4,635,561

4,583,174

Basic earnings per share:

$

0.20

$

0.22

$

0.40

$

0.64

Diluted earnings per share:

$

0.20

$

0.21

$

0.39

$

0.63