NORTHERN TECHNOLOGIES INTERNATIONAL CORP

SEC insider activity covers quarterly filings through June 30, 2026. Later filings are not included. Reported roles do not establish current employment or current holdings. SEC filing documents, sections and filing-text search cover filings dated January 1, 2000 onward. Earlier filings are deferred until after launch.

NTIC

organization

SIC: 3470

SEC Insider

$11.9M

508 transactions

Summary

NORTHERN TECHNOLOGIES INTERNATIONAL CORP (NTIC) is an organization.

Recent Insider Transactions

As filed, including amendments; not net cash flow or current holdings. Joint reports count once. Totals cover known values only.

Buys: $242KSales: $5.9M23 insiders

Date	Insider	Type	Value
2025-07-24	NIGON RICHARD	M	$89K
2025-07-24	NIGON RICHARD	F	$89K
2025-05-06	von Falkenhausen Konstantin	Buy	$8K
2025-04-25	Calderon Nancy E.	Buy	$7K
2025-02-12	Calderon Nancy E.	L	$152.01
2025-02-12	Calderon Nancy E.	L	$72.402
2025-08-13	Calderon Nancy E.	L	$21.848
2025-05-14	Calderon Nancy E.	L	$21.83
2025-08-13	Calderon Nancy E.	L	$20.458
2025-05-14	Calderon Nancy E.	L	$20.433
2025-09-01	NIGON RICHARD	A	$0
2025-09-01	LYNCH G PATRICK(President and CEO)	A	$0
2025-09-01	WOLSFELD MATTHEW C(CFO and Corporate Secretary)	A	$0
2025-09-01	Lee Sunggyu	A	$0
2025-09-01	Narayan Ramani	A	$0
2025-09-01	von Falkenhausen Konstantin	A	$0
2025-09-01	Calderon Nancy E.	A	$0
2025-09-01	Kemp Sarah E.	A	$0
2025-09-01	Pinho Cristina Lucia Duarte	A	$0
2025-07-24	NIGON RICHARD	M	$0

SEC filings: SEC EDGAR

Activity data: SEC EDGAR

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