Prospectus Filed Pursuant to Rule 424(b)(5) (424b5)
August 04 2022 - 4:16PM
Edgar (US Regulatory)
PROSPECTUS SUPPLEMENT |
Filed Pursuant to Rule 424(b)(5) |
(to Prospectus dated August 16, 2021 and the Prospectus Supplements dated August 16, 2021 and March 28, 2022) |
Registration No. 333-258491 |
Up to $50,000,000
Common Stock
This prospectus supplement
updates and amends certain information in our base prospectus, dated August 16, 2021, as supplemented by our prospectus supplements
dated August 16, 2021 (the “Initial Prospectus Supplement”) and March 28, 2022 (collectively with the base prospectus and
the Initial Prospectus Supplement, the “Prospectus”), relating to the offer and sale of shares of our common stock from time
to time through B. Riley Securities, Inc., as sales agent, in sales deemed to be an “at
the market offering” as defined in Rule 415(a)(4) promulgated under the Securities Act of 1933, pursuant to the Sales Agreement
(as defined in the Prospectus).
This prospectus supplement
should be read in conjunction with the Prospectus, and is qualified by reference thereto, except to the extent that the information herein
amends or supersedes the information contained in the Prospectus. This prospectus supplement is not complete without, and may only be
delivered or utilized in connection with, the Prospectus and any future amendments or supplements thereto.
Our common stock is listed
on the Nasdaq Capital Market under the symbol “INTZ.” On August 3, 2022, the last reported
sale price of our common stock as reported on the Nasdaq Capital Market was $4.29 per share.
On March 28, 2022, we filed
a prospectus supplement indicating that we were, at that time, subject to General Instruction I.B.6 of Form S-3, which limited the amount
that we were able sell under the registration statement of which the Prospectus forms a part. We are currently no longer subject to the
offering limits imposed by General Instruction I.B.6 of Form S-3. If we become subject to the offering limits in General Instruction I.B.6
of Form S-3 in the future, we will file another prospectus supplement.
As of the date of this supplement,
we have sold an aggregate of 1,834,674 shares (including sales pending ordinary settlement under the Sales Agreement) for gross proceeds
of $8,080,746.79 pursuant to the Sales Agreement. As a result of such prior sales, as of the date of this supplement, shares having an
aggregate offering price of up to $41,919,253.21 remain available for offer and sale under the Sales Agreement through the Prospectus,
as amended.
Investing in our securities
involves a high degree of risk. For a discussion of the factors you should carefully consider before deciding to purchase our securities,
see “Risk Factors” beginning on page S-3 of the Initial Prospectus Supplement and page 4 of the Prospectus, as well as the
documents incorporated by reference therein and any free writing prospectus that we have authorized for use in connection.
Neither the Securities
and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus
supplement or the accompanying prospectus is truthful or complete. Any representation to the contrary is a criminal offense.
B. RILEY SECURITIES
The date of this prospectus supplement is August
4, 2022
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