X0508 4 2025-09-01 0 0000875582 NORTHERN TECHNOLOGIES INTERNATIONAL CORP NTIC 0001258554 LYNCH G PATRICK 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 105284 D Common Stock 1203334 I (1) Stock Option (right to buy) 7.42 2025-09-01 4 A 0 44051 0 A 2035-08-31 Common Stock 44051 44051 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 14,684 shares on each of September 1, 2026 and September 1, 2027 and with respect to 14,683 shares on September 1, 2028. /s/ Matthew C. Wolsfeld-Attorney-in-fact 2025-09-03