Nancy E. Calderon - 01 Sep 2025 Form 4 Insider Report for NORTHERN TECHNOLOGIES INTERNATIONAL CORP (NTIC)

Reporting relationship: Director
Issuer ticker: NTIC
Reported as of: 01 Sep 2025
Net transaction value: +$532
SEC form: 4
Accepted by SEC: 03 Sep 2025, 16:12:13 UTC
Prior SEC filing: 27 May 2025
Next SEC filing: 26 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Matthew Wolsfeld, attorney-in-fact

Key filing fact

Nancy E. Calderon filed Form 4 for NORTHERN TECHNOLOGIES INTERNATIONAL CORP (NTIC) on 03 Sep 2025.

Key facts

This page summarizes Nancy E. Calderon's Form 4 filing for NORTHERN TECHNOLOGIES INTERNATIONAL CORP (NTIC).
9 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 03 Sep 2025, 16:12.

Change

Previous filing in this sequence was filed on 27 May 2025.
Current net transaction value: +$532.

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 0001791477 Primary reporting owner

Calderon Nancy E.

Relationship: Director
Address: C/O NORTHERN TECHNOLOGIES INT'L CORP., 4201 WOODLAND ROAD, PO BOX 69, CIRCLE PINES
Signature: /s/ Matthew Wolsfeld, attorney-in-fact
Signature date: 03 Sep 2025

Reported non-derivative transactions

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

NTIC transaction

Common Stock

Small acquisition under Rule 16a-6

Transaction value: $72.06
Shares: +5
Change %: +0.07%
Price: $13.29
Shares after: 7,960
Date: 13 Nov 2024
Ownership: Direct

NTIC transaction

Common Stock

Small acquisition under Rule 16a-6

Transaction value: $151
Shares: +11
Change %: +0.14%
Price: $13.29
Shares after: 7,971
Date: 13 Nov 2024
Ownership: Direct

NTIC transaction

Common Stock

Small acquisition under Rule 16a-6

Transaction value: $72.44
Shares: +6
Change %: +0.08%
Price: $11.26
Shares after: 7,978
Date: 12 Feb 2025
Ownership: Direct

NTIC transaction

Common Stock

Small acquisition under Rule 16a-6

Transaction value: $152
Shares: +13
Change %: +0.17%
Price: $11.26
Shares after: 7,991
Date: 12 Feb 2025
Ownership: Direct

NTIC transaction

Common Stock

Small acquisition under Rule 16a-6

Transaction value: $20.41
Shares: +3
Change %: +0.03%
Price: $7.35
Shares after: 7,994
Date: 14 May 2025
Ownership: Direct

NTIC transaction

Common Stock

Small acquisition under Rule 16a-6

Transaction value: $21.85
Shares: +3
Change %: +0.04%
Price: $7.35
Shares after: 7,997
Date: 14 May 2025
Ownership: Direct

NTIC transaction

Common Stock

Small acquisition under Rule 16a-6

Transaction value: $20.44
Shares: +3
Change %: +0.03%
Price: $7.72
Shares after: 8,000
Date: 13 Aug 2025
Ownership: Direct

NTIC transaction

Common Stock

Small acquisition under Rule 16a-6

Transaction value: $21.88
Shares: +3
Change %: +0.04%
Price: $7.72
Shares after: 8,002
Date: 13 Aug 2025
Ownership: Direct

NTIC transaction

Common Stock

Award

Transaction value: $0
Shares: +6,739
Change %: +84%
Price: $0.000000
Shares after: 14,741
Date: 01 Sep 2025
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, 2026 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 6,739 shares issuable upon vesting and settlement of restricted stock units and 46.7041 shares held in the Reporting Person's IRA.

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