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Insider Ownership

Insider Trading & Ownership of MATTHEW C. WOLSFELD

Location: Circle Pines, MN
Summary: The estimated net worth of MATTHEW C. WOLSFELD is at least $1,246,776 dollars as of 03 Sep 2025. MATTHEW C. WOLSFELD is the CFO and Corporate Secretary of NORTHERN TECHNOLOGIES INTERNATIONAL CORP and owns shares of NORTHERN TECHNOLOGIES INTERNATIONAL CORP (NTIC) stock worth about $1.25M.
Signature: /s/ Matthew C. Wolsfeld-Attorney-in-fact
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Ownership of MATTHEW C. WOLSFELD

Symbol	Company	Relationship	Holdings Value	Past Year Net Change	Change %	Report Period
NTIC	NORTHERN TECHNOLOGIES INTERNATIONAL CORP	CFO and Corporate Secretary	$1,246,776			01 Sep 2025

Insider Transactions Reported by MATTHEW C. WOLSFELD:

Sym	Company	Class	Transaction	%	Value $	* Price $	Shares	Shares After	Date	Ownership

* An asterisk sign (*) next to the price indicates that the price is likely invalid.