WOLSFELD MATTHEW C [Rocket]

Date	Name	Symbol	Type	Security	Shares	Price	Value	Reported
07/11/2023	NORTHERN TECHNOLOGIES INTERNATIONAL CORP	NTIC	Exercise	Stock Option (right to buy)	8.6k	$7.35	$63.1k	07/11/2023
10/04/2022	NORTHERN TECHNOLOGIES INTERNATIONAL CORP	NTIC	Exercise	Stock Option (right to buy)	27.2k	$5.13	$139.5k	10/04/2022
10/04/2022	NORTHERN TECHNOLOGIES INTERNATIONAL CORP	NTIC	Payment of Exercise	Common Stock	10.1k	$13.83	$139.5k	10/04/2022
09/01/2022	NORTHERN TECHNOLOGIES INTERNATIONAL CORP	NTIC	Grant	Stock Option (right to buy)	35.1k	$11.38	$399.7k	09/01/2022
09/01/2021	NORTHERN TECHNOLOGIES INTERNATIONAL CORP	NTIC	Grant	Stock Option (right to buy)	24.1k	$16.97	$408.1k	09/01/2021
09/01/2020	NORTHERN TECHNOLOGIES INTERNATIONAL CORP	NTIC	Grant	Stock Option (right to buy)	55.2k	$8.24	$455.2k	09/01/2020
09/01/2019	NORTHERN TECHNOLOGIES INTERNATIONAL CORP	NTIC	Grant	Stock Option (right to buy)	43.4k	$10.80	$468.2k	09/01/2019
09/01/2018	NORTHERN TECHNOLOGIES INTERNATIONAL CORP	NTIC	Grant	Stock Option (right to buy)	10.2k	$36.45	$371.7k	09/01/2018
09/24/2012	NORTHERN TECHNOLOGIES INTERNATIONAL CORP	NTIC	Exercise	Stock Option (right to buy)	9k	$9.95	$89.6k	09/24/2012
11/18/2010	NORTHERN TECHNOLOGIES INTERNATIONAL CORP	NTIC	Grant	Common Stock	3.2k	$0.00	$0	11/18/2010