Richard Nigon - 20 Jul 2026 Form 4 Insider Report for NORTHERN TECHNOLOGIES INTERNATIONAL CORP (NTIC)

Reporting relationship: Director
Issuer ticker: NTIC
Reported as of: 20 Jul 2026
Net transaction value: -$96,048
SEC form: 4
Accepted by SEC: 21 Jul 2026, 16:28:47 UTC
Prior SEC filing: 09 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Matthew C. Wolsfeld-Attorney-in-fact

Key filing fact

Richard Nigon filed Form 4 for NORTHERN TECHNOLOGIES INTERNATIONAL CORP (NTIC) on 21 Jul 2026.

Key facts

This page summarizes Richard Nigon's Form 4 filing for NORTHERN TECHNOLOGIES INTERNATIONAL CORP (NTIC).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 21 Jul 2026, 16:28.

Change

Previous filing in this sequence was filed on 09 Jun 2026.
Current net transaction value: -$96,048.

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 0001213869 Primary reporting owner

NIGON RICHARD

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: 21 Jul 2026

Reported non-derivative transactions

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

NTIC transaction

Common Stock

Options Exercise

Transaction value
Shares: +12,000
Change %: +25%
Price: $6.70^*
Shares after: 59,148
Date: 20 Jul 2026
Ownership: Direct

NTIC transaction

Common Stock

Sale

Transaction value: $96,048
Shares: -12,000
Change %: -20%
Price: $8.00
Shares after: 47,148
Date: 20 Jul 2026
Ownership: Direct
Footnotes: F1

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

NTIC transaction Derivative

Stock Option (right to buy)

Options Exercise

Transaction value
Shares: -12,000
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 20 Jul 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 12,000
Exercise price: $6.70
Footnotes: 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

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.00 to $8.04, inclusive. The reporting person undertakes to provide to Northern Technologies International Corporation (NTIC), any security holder of NTIC, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (1) to this Form 4.

Footnote F2

This option has fully vested.