NORTHERN TECHNOLOGIES INTERNATIONAL CORP — Director's Dealing 2017

May 1, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: NORTHERN TECHNOLOGIES INTERNATIONAL CORP (NTIC)
CIK: 0000875582
Period of Report: 2017-04-27

Reporting Person: NIGON RICHARD (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-04-27	Common Stock	M	4000	$10.25	Acquired	13800	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-04-27	Stock Option (right to buy)	$10.25	M	4000	Disposed	2017-08-31	Common Stock (4000)	Direct

Footnotes

F1: This option fully vested on September 1, 2013.