X0609 4 2026-09-01 0 0000875582 NORTHERN TECHNOLOGIES INTERNATIONAL CORP NTIC 0001258554 LYNCH G PATRICK false C/O NORTHERN TECHNOLOGIES INT'L CORP. 4201 WOODLAND ROAD, PO BOX 69 CIRCLE PINES MN 55014 1 1 1 0 President and CEO 0 Common Stock 1203334 I (1) Common Stock 105284 D Stock Option (right to buy) 8.08 2026-09-01 4 A 0 40257 0 A 2036-08-31 Common Stock 40257 40257 D These shares are held directly by Inter Alia Holding Company of which G. Patrick Lynch is an officer and stockholder. Mr. G. Patrick Lynch disclaims beneficial ownership of the shares held by Inter Alia Holding Company, except to the extent of his pecuniary interest therein. This option vests with respect to 13,419 shares on each of September 1, 2027, September 1, 2028, and September 1, 2029. /s/ Matthew C. Wolsfeld-Attorney-in-fact 2026-09-03