MCCALLUM KATRINKA - 26 Aug 2026 Form 4 Insider Report for INTRUSION INC (INTZ)

Reporting relationship: Director
Issuer ticker: INTZ
Reported as of: 26 Aug 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 26 Aug 2026, 16:28:24 UTC
Prior SEC filing: 16 Jul 2026
Source filing: View source filing
Reporting owner signature: /s/ Katrinka McCallam

Key filing fact

MCCALLUM KATRINKA filed Form 4 for INTRUSION INC (INTZ) on 26 Aug 2026.

Key facts

This page summarizes MCCALLUM KATRINKA's Form 4 filing for INTRUSION INC (INTZ).
2 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 26 Aug 2026, 16:28.

Change

Previous filing in this sequence was filed on 16 Jul 2026.
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 0001201242 Primary reporting owner

MCCALLUM KATRINKA

Relationship: Director
Address: C/O INTRUSION, INC., 101 EAST PARK BLVD, SUITE 1200, PLANO
Signature: /s/ Katrinka McCallam
Signature date: 26 Aug 2026

Reported non-derivative transactions

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

INTZ transaction

Common Stock

Options Exercise

Transaction value
Shares: +5,834
Change %: +4.3%
Price: $0.7950^*
Shares after: 141,551
Date: 26 Aug 2026
Ownership: Direct
Footnotes: F1

Reported derivative securities

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

INTZ transaction Derivative

Warrant

Award

Transaction value
Shares: +5,834
Change %
Price: $0.1250^*
Shares after: 5,834
Date: 26 Aug 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 5,834
Exercise price: $0.6700
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

Common Stock acquired because of an exercise of a Warrant.

Footnote F2

The Warrant was exercised in conjunction with a Warrant Inducement Letter dated 08/14/2026 where one Warrant was granted in exchange for one Warrant exercised.