X0306 4 2023-01-20 0 0000875582 NORTHERN TECHNOLOGIES INTERNATIONAL CORP NTIC 0001960551 Pinho Cristina Lucia Duarte 4201 WOODLAND ROAD PO BOX 69 CIRCLE PINES MN 55014 1 0 0 0 Common Stock 0 D Stock Option (right to buy) 12.95 2023-01-20 4 A 0 5511 0 A 2033-01-19 Common Stock 5511 5511 D This option was granted under the Northern Technologies International Corporation Amended and Restated 2019 Stock Incentive Plan and will vest as to all of the underlying shares on January 20, 2024, subject to the reporting person's continued service as a director of the Issuer through the vesting dates. /s/ Matt Wolsfeld, Attorney In Fact 2023-01-23