INTZ

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.

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.

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.

Reporting person reenrolled in Employee Stock Purchase Plan on January 1, 2026. Reporting Person purchased 2,500 shares under the Employee Stock Purchase Plan on June 30, 2026..

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.

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.

Reporting person reenrolled in Employee Stock Purchase Plan on January 1, 2026. Reporting Person purchased 2,500 shares under the Employee Stock Purchase Plan on June 30, 2026.

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.

Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of restricted stock units.

Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of restricted stock units.

Reporting person reenrolled in Employee Stock Purchase Plan on July 1, 2025. Reporting Person purchased 2500 shares under the Employee Purchase Plan on December 31, 2025.

Reporting person reenrolled in Employee Stock Purchase Plan on July 1, 2025. Reporting Person purchased 2,175 shares under the Employee Stock Purchase Plan on December 31, 2025.

Sale made by the reporting person pursuant to company policy limiting transactions to designated open trading period.

Restricted stock units awarded to the reporting person pursuant to the 2021 Intrusion, Inc Omnibus Incentive Plan as part of the Compensation Plan for non-employee directors. Restricted stock units fully vest on the anniversary of the award date.

Restricted stock units awarded to the reporting person pursuant to the 2021 Intrusion, Inc Omnibus Incentive Plan as part of the Compensation Plan for non-employee directors. Restricted stock units fully vest on the anniversary of the award date.

Restricted stock units awarded to the reporting person pursuant to the 2021 Intrusion, Inc Omnibus Incentive Plan as part of the Compensation Plan for non-employee directors. Restricted stock units fully vest on the anniversary of the award date.

Restricted stock units awarded to the reporting person pursuant to the 2021 Intrusion, Inc Omnibus Incentive Plan as part of the Compensation Plan for non-employee directors. Restricted stock units fully vest on the anniversary of the award date.

Sale made by the reporting person pursuant to company policy limiting transactions to designated open trading period.

Sale made by the reporting person pursuant to company policy limiting transactions to designated open trading period.

Sale made by the reporting person pursuant to company policy limiting transactions to designated open trading period.

Sale made by the reporting person pursuant to company policy limiting transactions to designated open trading period.

Reporting person reenrolled in Employee Stock Purchase Plan on January 1, 2025. Reporting Person purchased 693 shares under the Employee Stock Purchase Plan on June 30, 2025.

Reporting person reenrolled in Employee Stock Purchase Plan on January 1, 2025. Reporting Person purchased 1,091 shares under the Employee Stock Purchase Plan on June 30, 2025.

Restricted stock units awarded to the reporting person as an equity incentive pursuant to the 2021 Intrusion Inc. Omnibus Incentive Plan as part of the compensation plan for employees. Restricted stock units fully vest on the anniversary of the award date.

Includes 5,005 shares held by the Biblical Studies Foundation in which Mr. Head is President.

Restricted stock units awarded to the reporting person as an equity incentive pursuant to the 2021 Intrusion Inc. Omnibus Incentive Plan as part of the compensation plan for employees. Restricted stock units fully vest on the anniversary of the award date.

Reporting person reenrolled in Employee Stock Purchase Plan on July 1, 2024. Reporting Person purchased 250 shares under the Employee Purchase Plan on December 31, 2024.

Reporting person reenrolled in Employee Stock Purchase Plan on July 1, 2024. Reporting Person purchased 250 shares under the Employee Purchase Plan on December 31, 2024.

Reporting person reenrolled in Employee Stock Purchase Plan July 1, 2024. Reporting person purchased 250 shares under the Employee Stock Purchase Plan on December 31, 2024.

Common Stock acquired because of an exercise of a Warrant.

The Warrants was exercisable in conjunction with a Warrant Inducement Letter dated November 21, 2024, where one Warrant was granted in exchange for one Warrant exercised.

The Warrant was exercisable in conjunction with a Warrant Inducment Letter dated November 21, 2024, where one Warrant was granted in exchange for one Warrant exercised.

The Warrant was exercisable in conjunction with a Warrant Inducement Letter dated November 21, 2024, where one Warrant was granted in exchange for one Warrant exercised.

The Warrants was exercisable in conjunction with a Warrant Inducement Letter dated November 21, 2024, where one Warrant was granted in exchange for one Warrant exercised.

Common Stock acquired because of an exercise of a Warrant.

Common Stock acquired because of an exercise of a Warrant.

Restricted stock units awarded to the reporting person pursuant to the 2021 Intrusion, Inc Omnibus Incentive Plan as part of the Compensation Plan for non-employee directors. Restricted stock units fully vest on the anniversary of the award date.

Restricted stock units awarded to the reporting person pursuant to the 2021 Intrusion, Inc Omnibus Incentive Plan as part of the Compensation Plan for non-employee directors. Restricted stock units fully vest on the anniversary of the award date.

Restricted stock units awarded to the reporting person pursuant to the 2021 Intrusion, Inc Omnibus Incentive Plan as part of the Compensation Plan for non-employee directors. Restricted stock units fully vest on the anniversary of the award date.

Restricted stock units awarded to the reporting person pursuant to the 2021 Intrusion, Inc Omnibus Incentive Plan as part of the Compensation Plan for non-employee directors. Restricted stock units fully vest on the anniversary of the award date.

Restricted stock units awarded to the reporting person pursuant to the 2021 Intrusion, Inc Omnibus Incentive Plan as part of the Compensation Plan for non-employee directors. Restricted stock units fully vest on the anniversary of the award date.

Reporting person reenrolled in Employee Stock Purchase Plan on January 1, 2024. Reporting Person purchased 250 shares under the Employee Purchase Plan on June 28, 2024.

Reporting person reenrolled in Employee Stock Purchase Plan January 1, 2024. Reporting Person purchased 250 shares under the Employee Stock Purchase Plan on June 28, 2024.

Reporting person reenrolled in Employee Stock Purchase Plan on January 1, 2024. Reporting Person purchased 250 shares under the Employee Purchase Plan on June 28, 2024.

10,000 shares were purchased by Reporting Person under a Security Purchase Agreement dated 4/22/2024.

585,748 shares were purchased by Reporting Person under a Security Purchase Agreement dated April 22, 2024.

1,171,496 warrants purchased by Reporting Person are exercisable from April 22, 2024 to April 22, 2029.