Cristina Lucia Duarte Pinho - 01 Sep 2026 Form 4 Insider Report for NORTHERN TECHNOLOGIES INTERNATIONAL CORP (NTIC)

Reporting relationship: Director
Issuer ticker: NTIC
Reported as of: 01 Sep 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 03 Sep 2026, 16:14:54 UTC
Prior SEC filing: 03 Sep 2025
Source filing: View source filing
Reporting owner signature: /s/ Matthew C. Wolsfeld-Attorney-in-fact

Key filing fact

Cristina Lucia Duarte Pinho filed Form 4 for NORTHERN TECHNOLOGIES INTERNATIONAL CORP (NTIC) on 03 Sep 2026.

Key facts

This page summarizes Cristina Lucia Duarte Pinho's Form 4 filing for NORTHERN TECHNOLOGIES INTERNATIONAL CORP (NTIC).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 03 Sep 2026, 16:14.

Change

Previous filing in this sequence was filed on 03 Sep 2025.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001960551 Primary reporting owner

Pinho Cristina Lucia Duarte

Relationship: Director
Address: C/O NORTHERN TECHNOLOGIES INT'L CORP., 4201 WOODLAND ROAD, PO BOX 69, CIRCLE PINES
Signature: /s/ Matthew C. Wolsfeld-Attorney-in-fact
Signature date: 03 Sep 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

NTIC transaction

Common Stock

Award

Transaction value
Shares: +6,188
Change %: +59%
Price: $0.000000^*
Shares after: 16,698
Date: 01 Sep 2026
Ownership: Direct
Footnotes: F1, F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

These shares will vest on September 1, 2027 and be issued upon settlement of a restricted stock unit award granted under the Northern Technologies International Corporation 2024 Stock Incentive Plan, conditioned upon the Reporting Person remaining a director of Northern Technologies International Corporation through the vesting date.

Footnote F2

Includes 6,188 shares issuable upon vesting and settlement of restricted stock units.