NORTHERN TECHNOLOGIES INTERNATIONAL CORP (NTIC) Insider Trading & SEC Filings

Updated Jul 16, 2026 · Last SEC filing 2026-07-02

NORTHERN TECHNOLOGIES INTERNATIONAL CORP (NTIC) has filed 1 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-02. 2 Form 8-K material event filings were reported by NTIC in the last 90 days. InsiderAlpha tracks every NTIC SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.

About NORTHERN TECHNOLOGIES INTERNATIONAL CORP (NTIC)

SEC CIK	0000875582

90-Day SEC Filing Activity

Form 4 filings (90d)	1
Form 8-K filings (90d)	2
Latest Form 4 filing	2026-07-02

Recent NTIC Insider Transactions (Form 4)

Date	Insider	Role	Transaction	Shares	Price	Value	Filing
2026-07-01	WOLSFELD MATTHEW C	CFO and Corporate Secretary	F — Tax withholding / forfeiture	9.2K	$8.68	$80K	SEC
2026-07-01	WOLSFELD MATTHEW C	CFO and Corporate Secretary	M — Option exercise	11.9K	$6.70	$80K	SEC
2025-09-01	Kemp Sarah E.	Director	A — Grant or award	6.7K	$0.00	—	SEC
2025-09-01	NIGON RICHARD	Director	A — Grant or award	8.1K	$0.00	—	SEC
2025-09-01	Pinho Cristina Lucia Duarte	Director	A — Grant or award	6.7K	$0.00	—	SEC
2025-09-01	Calderon Nancy E.	Director	A — Grant or award	6.7K	$0.00	—	SEC
2025-08-13	Calderon Nancy E.	Director	J — Other acquisition / disposition	3	$7.72	$20	SEC
2025-08-13	Calderon Nancy E.	Director	J — Other acquisition / disposition	3	$7.72	$22	SEC
2025-07-24	NIGON RICHARD	Director	F — Tax withholding / forfeiture	10.9K	$8.20	$89K	SEC
2025-07-24	NIGON RICHARD	Director	M — Option exercise	12.0K	$7.43	$89K	SEC
2025-05-14	Calderon Nancy E.	Director	J — Other acquisition / disposition	3	$7.35	$22	SEC
2025-05-14	Calderon Nancy E.	Director	J — Other acquisition / disposition	3	$7.35	$20	SEC
2025-02-12	Calderon Nancy E.	Director	J — Other acquisition / disposition	13	$11.26	$152	SEC
2025-02-12	Calderon Nancy E.	Director	J — Other acquisition / disposition	6	$11.26	$72	SEC
2024-11-13	Calderon Nancy E.	Director	J — Other acquisition / disposition	5	$13.29	$72	SEC

All transactions sourced from SEC EDGAR Form 4 filings for NORTHERN TECHNOLOGIES INTERNATIONAL CORP (NTIC). Updated in real time as new filings are submitted to the SEC.

Most-Active NTIC Insiders — Last 90 Days

Insider	Form 4 filings	Total transaction value
WOLSFELD MATTHEW C	3	$159K

Recent NTIC Form 8-K Material Events

2026-07-09 — Item 2.02, 9.01 [SEC]
2026-04-24 — Item 8.01 · Other · negative [SEC]
Northern Technologies International Corporation announced the suspension of its quarterly cash dividend on common stock, effective with the third quarter of fiscal 2026, to prioritize debt reduction. This follows a previous dividend reduction to $0.01 per share in Q3 fiscal 2025,
2026-04-09 — Item 2.02, 9.01 · Earnings · neutral [SEC]
Northern Technologies International Corporation announced its consolidated financial results for the second fiscal quarter ended February 28, 2026. The filing provides quarterly earnings information without explicit beat/miss or guidance language.

Recent Insider Filings

2026-07-02 — WOLSFELD MATTHEW C (CFO and Corporate Secretary)
2025-09-01 — LYNCH G PATRICK (President and CEO)
2025-09-01 — WOLSFELD MATTHEW C (CFO and Corporate Secretary)
2025-09-01 — Lee Sunggyu (Director)
2025-09-01 — NIGON RICHARD (Director)

Form 4 Transaction Code Reference

SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in NTIC insider filings:

P	Open-market purchase by the insider
S	Open-market sale by the insider
A	Grant, award, or other acquisition from the issuer
M	Exercise or conversion of derivative security (e.g. options)
F	Payment of exercise price or tax liability via share withholding
G	Bona-fide gift of securities
D	Disposition to the issuer (e.g. share buyback participation)
J	Other acquisition or disposition
X	Exercise of in-the-money or at-the-money derivative security
C	Conversion of derivative security
V	Transaction voluntarily reported earlier than required

NTIC Insider Trading — FAQ

What is the latest insider trade for NTIC?: NORTHERN TECHNOLOGIES INTERNATIONAL CORP (NTIC) had 1 insider filings in the last 90 days, with the most recent on 2026-07-02. InsiderAlpha tracks every Form 4, 10-K, 10-Q, and 8-K filing in real time.
How many insiders are buying NTIC stock?: 0 insider purchases of NTIC were filed in the last 90 days.
How many insiders are selling NTIC stock?: 0 insider sales of NTIC were filed in the last 90 days.
Where can I see NTIC SEC filings (Form 4, 10-K, 10-Q, 8-K)?: InsiderAlpha aggregates every NTIC SEC filing — Form 4 insider transactions, 10-K and 10-Q quarterly reports, and 8-K material event disclosures — in one timeline.

Learn More

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