Intrusion director granted 37,351 restricted shares

MCCALLUM KATRINKA reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

MCCALLUM KATRINKA reported acquisition or exercise transactions in this Form 4 filing.

Intrusion Inc. director Katrinka McCallum received a grant of 37,351 shares of common stock as a restricted stock unit award under the 2021 Intrusion, Inc. Omnibus Incentive Plan. The RSUs vest over 6 months in two equal tranches, 50% after 3 months and 50% after 6 months from grant. Following this equity award, she directly holds 135,717 common shares.

Insider Trade Summary

Grant/Award: 37,351 shares

Grant/Award 1 txn

Insider MCCALLUM KATRINKA

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock F1	37,351	$0.9287	$35K

Holdings After Transaction: Common Stock — 135,717 shares (Direct)

Footnotes (1)

1. F1. Restricted stock units awarded to the reporting person pursuant to the 2021 Intrusion, Inc. Omnibus Incentive Plan. The restricted stock units vest over a 6-month period from the date of issuance in two tranches, 50% at 3-months and 50% at 6-months.

Key Figures

RSUs granted: 37,351 shares Grant value per share: $0.9287 Shares held after grant: 135,717 shares +3 more

6 metrics

RSUs granted 37,351 shares Restricted stock units awarded to the director on 2026-06-30

Grant value per share $0.9287 Reported price per share for the restricted stock unit award

Shares held after grant 135,717 shares Total common shares directly held by the director following the award

Vesting period 6 months RSUs vest in two tranches from the date of issuance

First vesting tranche 50% Half of the restricted stock units vest 3 months from issuance

Second vesting tranche 50% Remaining restricted stock units vest 6 months from issuance

Key Terms

Restricted stock units, Omnibus Incentive Plan, vesting, grant/award acquisition

4 terms

Restricted stock units financial

"Restricted stock units awarded to the reporting person pursuant to the 2021"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Omnibus Incentive Plan financial

"pursuant to the 2021 Intrusion, Inc. Omnibus Incentive Plan."

An omnibus incentive plan is a single, flexible program a company uses to give employees and executives different types of pay tied to performance — for example stock options, restricted shares, cash bonuses and other awards — all governed by one set of rules. It matters to investors because it determines how many new shares may be created, how leaders are motivated and how much the company will spend on compensation over time; think of it as a master toolbox that affects both costs and the total share supply.

vesting financial

"The restricted stock units vest over a 6-month period from the date"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

grant/award acquisition financial

"transaction_action": "grant/award acquisition""

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did INTRUSION INC (INTZ) report for Katrinka McCallum?

INTRUSION INC reported that director Katrinka McCallum received a grant of 37,351 restricted stock units of common stock as equity compensation under the company’s 2021 Omnibus Incentive Plan.

How many INTRUSION INC (INTZ) shares does Katrinka McCallum hold after this Form 4 transaction?

After the reported grant, Katrinka McCallum directly holds 135,717 shares of INTRUSION INC common stock. This total includes the newly awarded 37,351 restricted stock units subject to vesting conditions.

What is the vesting schedule for Katrinka McCallum’s INTRUSION INC (INTZ) restricted stock units?

The 37,351 restricted stock units awarded to Katrinka McCallum vest over a 6‑month period, with 50% vesting at 3 months from issuance and the remaining 50% vesting at 6 months.

Was the INTRUSION INC (INTZ) Form 4 transaction an open-market purchase or compensation grant?

The Form 4 reports a grant/award acquisition, not an open-market purchase. The 37,351 shares are restricted stock units issued as compensation under the 2021 Intrusion, Inc. Omnibus Incentive Plan.

What price per share is associated with Katrinka McCallum’s INTRUSION INC (INTZ) award?

The reported award of 37,351 restricted stock units shows a value of $0.9287 per share. These units are part of an equity incentive grant and vest over a 6‑month schedule in two equal tranches.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 07/16/2026 - 11:54 AM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

MCCALLUM KATRINKA

(Last) (First) (Middle)

101 EAST PARK BLVD, SUITE 1200

(Street)

PLANO TEXAS 75074

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
INTRUSION INC [ INTZ ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/30/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock(1)	06/30/2026		A		37,351	A	$0.9287	135,717	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Restricted stock units awarded to the reporting person pursuant to the 2021 Intrusion, Inc. Omnibus Incentive Plan. The restricted stock units vest over a 6-month period from the date of issuance in two tranches, 50% at 3-months and 50% at 6-months.

	/s/ Katrinka McCallum	07/16/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)