INTZ / Intrusion Inc. - تصريحات هيئة الأوراق المالية والبورصات، التقرير السنوي، بيان الوكيل

شركة التسلل

الإحصائيات الأساسية
CIK 736012
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Intrusion Inc.
SEC Filings (Chronological Order)
توفر هذه الصفحة قائمة كاملة ومرتبة ترتيبًا زمنيًا لتصريحات هيئة الأوراق المالية والبورصات، باستثناء تصريحات الملكية التي نقدمها في مكان آخر.
August 25, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 19, 2025 INTRUSION INC. (E

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 19, 2025 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Num

August 12, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-39608 INTR

August 12, 2025 EX-99.1

Intrusion Inc. Reports Second Quarter 2025 Results Recent Intrusion Shield expansion highlights progress toward sustainable growth and profitability

Exhibit 99.1 Intrusion Inc. Reports Second Quarter 2025 Results Recent Intrusion Shield expansion highlights progress toward sustainable growth and profitability PLANO, Texas, August 12, 2025 (ACCESSWIRE) - Intrusion Inc. (NASDAQ: INTZ) (“Intrusion” or the “Company”), a leader in cyberattack prevention solutions, announced today financial results for the second quarter ended June 30, 2025. Recent

August 12, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 12, 2025 INTRUSION INC. (E

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 12, 2025 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Num

July 2, 2025 DEF 14A

SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Definitive Proxy Statement ☐ Definitive Additional Materials ☐ Soliciting Material Pursuant to § 240.

June 12, 2025 EX-10.1

At The Market Offering Agreement, dated June 12, 2025, by and between Intrusion, Inc. and H.C. Wainwright & Co., LLC

Exhibit 10.1 AT THE MARKET OFFERING AGREEMENT June 12, 2025 H.C. Wainwright & Co., LLC 430 Park Avenue New York, New York 10022 Ladies and Gentlemen: Intrusion Inc., a corporation organized under the laws of Delaware (the “Company”), confirms its agreement (this “Agreement”) with H.C. Wainwright & Co., LLC (the “Manager”) as follows: 1. Definitions. The terms that follow, when used in this Agreeme

June 12, 2025 424B5

INTRUSION INC. Up to $50,000,000 Shares of Common Stock

Filed Pursuant to Rule 424(b)(5) Registration No. 333-281565 Prospectus Supplement INTRUSION INC. Up to $50,000,000 Shares of Common Stock We entered into an At The Market Offering Agreement, dated June 12, 2025 (the “Sales Agreement”) with H.C. Wainwright & Co., LLC (the “Agent”) relating to shares of our common stock, par value $0.01 per share (our “common stock”), offered by this prospectus sup

June 12, 2025 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 12, 2025 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Numbe

June 12, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 6, 2025 INTRUSION INC. (Exac

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 6, 2025 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Number

June 12, 2025 424B3

INTRUSION, INC.

Filed Pursuant to Rule 424(b)(3) Registration No. 333-281565 SUPPLEMENT NO. 1 TO PROSPECTUS SUPPLEMENT DATED FEBRUARY 10, 2025 (To Prospectus Supplement and Prospectus dated February 10, 2025) INTRUSION, INC. This Supplement No. 1 to Prospectus Supplement (this “Supplement No. 1”) amends and supplements the information in the prospectus supplement (the “ATM Prospectus Supplement”) to the registrat

April 30, 2025 10-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K/A (Amendment No. 1)

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K/A (Amendment No. 1) (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE FISCAL YEAR ENDED DECEMBER 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to COMMISSION

April 29, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-39608 INT

April 29, 2025 EX-99.1

Intrusion Inc. Reports First Quarter 2025 Results Company continues to make steady progress toward sustainable growth and profitability

Exhibit 99.1 Intrusion Inc. Reports First Quarter 2025 Results Company continues to make steady progress toward sustainable growth and profitability PLANO, Texas, April 29, 2025 (ACCESSWIRE) - Intrusion Inc. (NASDAQ: INTZ) (“Intrusion” or the “Company”), a leader in cyberattack prevention solutions, announced today financial results for the first quarter ended March 31, 2025. Recent Financial & Bu

April 29, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 29, 2025 INTRUSION INC. (Ex

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 29, 2025 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Numb

March 21, 2025 8-K

Unregistered Sales of Equity Securities, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 17, 2025 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Numb

March 21, 2025 EX-99.1

EXCHANGE AGREEMENT

Exhibit 99.1 EXCHANGE AGREEMENT This Exchange Agreement (this “Agreement”) is entered into as of March 17, 2025 by and between Streeterville Capital, LLC, a Utah limited liability company (“Lender”), and Intrusion, Inc., a Delaware corporation (“Borrower”). Capitalized terms used in this Agreement without definition shall have the meanings given to them in the Original Note (as defined below). A.

March 17, 2025 EX-99.1

EXCHANGE AGREEMENT

Exhibit 99.1 EXCHANGE AGREEMENT This Exchange Agreement (this “Agreement”) is entered into as of March 13, 2025 by and between Streeterville Capital, LLC, a Utah limited liability company (“Lender”), and Intrusion, Inc., a Delaware corporation (“Borrower”). Capitalized terms used in this Agreement without definition shall have the meanings given to them in the Original Note (as defined below). A.

March 17, 2025 424B5

INTRUSION INC. Up to $7,936,208 of Shares of Common Stock

Filed Pursuant to Rule 424(b)(5) Registration No. 333-281565 Prospectus Supplement (to Prospectus dated February 10, 2025) INTRUSION INC. Up to $7,936,208 of Shares of Common Stock This prospectus supplement relates to the issuance and sale of up to $7,936,208 of our shares of common stock, par value $0.01 per share (“common stock”), that we may issue from time to time, in one or more transactions

March 17, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 13, 2025 INTRUSION INC. (Ex

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 13, 2025 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Numb

March 11, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 11, 2025 INTRUSION INC. (Ex

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 11, 2025 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Numb

March 11, 2025 EX-99.1

EXCHANGE AGREEMENT

Exhibit 99.1 EXCHANGE AGREEMENT This Exchange Agreement (this “Agreement”) is entered into as of March 5, 2025 by and between Streeterville Capital, LLC, a Utah limited liability company (“Lender”), and Intrusion, Inc., a Delaware corporation (“Borrower”). Capitalized terms used in this Agreement without definition shall have the meanings given to them in the Original Note (as defined below). A. B

February 27, 2025 EX-99.1

Intrusion Inc. Reports Fourth Quarter and Full Year 2024 Results Recent balance sheet actions position the Company for future growth

Exhibit 99.1 Intrusion Inc. Reports Fourth Quarter and Full Year 2024 Results Recent balance sheet actions position the Company for future growth PLANO, Texas, February 27, 2025 (ACCESSWIRE) - Intrusion Inc. (NASDAQ: INTZ) (“Intrusion” or the “Company”), a leader in cyberattack prevention solutions, announced today financial results for the fourth quarter and full year ended December 31, 2024. Rec

February 27, 2025 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE FISCAL YEAR ENDED DECEMBER 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to COMMISSION FILE NUMBER 001-396

February 27, 2025 EX-19.1

Insider Trading Policy

EXHIBIT 19.1 INTRUSION INC. INSIDER TRADING POLICY Amended and Revised Effective February 19, 2025 A. POLICY OVERVIEW Intrusion Inc. (together with any subsidiaries, collectively the “Company”) has adopted this Insider Trading Policy (the “Policy”) to help you comply with the federal and state securities laws and regulations that govern trading in securities and to help the Company minimize its ow

February 27, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 27, 2025 INTRUSION INC.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 27, 2025 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File N

February 6, 2025 CORRESP

Intrusion, Inc. 101 East Park Blvd, Suite 1200 Plano, Texas 75074

Intrusion, Inc. 101 East Park Blvd, Suite 1200 Plano, Texas 75074 February 6, 2025 VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance Office of Technology 100 F Street, N.E. Washington, D.C. 20549 Attn: Ms. Jan Woo Re: Intrusion, Inc. Registration Statement on Form S-3 (File No. 333-281565) Acceleration Request Requested Date:  Monday, February 10, 2025 Requested Tim

January 31, 2025 S-3/A

As filed with the Securities and Exchange Commission on January 30, 2025

As filed with the Securities and Exchange Commission on January 30, 2025 Registration No.

January 30, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 29, 2025 INTRUSION INC. (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 29, 2025 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Nu

January 15, 2025 EX-99.1

Intrusion Inc. Provides an Update on its Balance Sheet

Exhibit 99.1 Intrusion Inc. Provides an Update on its Balance Sheet Improved balance sheet and financial flexibility positions the Company for future growth PLANO, TX, January 15, 2025 - Intrusion Inc. (NASDAQ: INTZ) (the “Company”), a leader in cyberattack prevention solutions, today provided an update on recent actions taken that resulted in $14.5 million in proceeds to the Company and the elimi

January 15, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 15, 2025 INTRUSION INC. (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 15, 2025 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Nu

January 7, 2025 EX-10.1

Securities Purchase Agreement by and between the Registrant and Streeterville Capital, LLC, dated as of January 6, 2025

Exhibit 10.1 SECURITIES PURCHASE AGREEMENT This Securities Purchase Agreement (this “Agreement”) is dated as of January 6, 2025, between Intrusion Inc., a Delaware corporation (the “Company”), and each purchaser identified on the signature pages hereto (each, including its successors and assigns, a “Purchaser” and collectively the “Purchasers”). WHEREAS, subject to the terms and conditions set for

January 7, 2025 EX-4.1

Form of Warrant

Exhibit 4.1 PRE-FUNDED COMMON STOCK PURCHASE WARRANT INTRUSION INC. Warrant Shares: 1,806,016 Initial Exercise Date: January 6, 2025 THIS PRE-FUNDED COMMON STOCK PURCHASE WARRANT (the “Warrant”) certifies that, for value received, Streeterville Capital, LLC, a Utah limited liability company, or its assigns (the “Holder”) is entitled, upon the terms and subject to the limitations on exercise and th

January 7, 2025 EX-99.1

Intrusion Inc. Announces $7.5 Million Registered Direct Offering

Exhibit 99.1 Intrusion Inc. Announces $7.5 Million Registered Direct Offering PLANO, TX, January 6, 2025 - Intrusion Inc. (NASDAQ: INTZ) (the “Company”), a leader in cyberattack prevention solutions, today announced that it has entered into a definitive agreement with a single institutional investor for the purchase and sale of 653,000 shares of common stock at a purchase price of $3.05 per share

January 7, 2025 8-K

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 6, 2025 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Num

January 7, 2025 424B5

653,000 Shares of Common Stock 1,806,016 Pre-Funded Warrants to Purchase Shares of Common Stock 1,806,016 Shares of Common Stock Underlying the Pre-Funded Warrants

Filed Pursuant to Rule 424(b)(5) Registration No. 333-258491 PROSPECTUS SUPPLEMENT (To Prospectus dated August 12, 2021) 653,000 Shares of Common Stock 1,806,016 Pre-Funded Warrants to Purchase Shares of Common Stock 1,806,016 Shares of Common Stock Underlying the Pre-Funded Warrants Intrusion Inc. (the “Company,” “Intrusion,” the “registrant,” “we,” “our” or “us”) is offering 653,000 shares of co

January 3, 2025 EX-99.5

EXCHANGE AGREEMENT

Exhibit 99.5 THE EXCHANGE CONTEMPLATED HEREIN IS INTENDED TO COMPORT WITH THE REQUIREMENTS OF SECTION 3(a)(9) OF THE SECURITIES ACT OF 1933, AS AMENDED. EXCHANGE AGREEMENT This Exchange Agreement (this “Agreement”) is entered into as of January 3, 2025 (the “Effective Date”) by and between Streeterville Capital, LLC, a Utah limited liability company (“Investor”), and Intrusion, Inc., a Delaware co

January 3, 2025 EX-99.3

EXCHANGE AGREEMENT

Exhibit 99.3 THE EXCHANGE CONTEMPLATED HEREIN IS INTENDED TO COMPORT WITH THE REQUIREMENTS OF SECTION 3(a)(9) OF THE SECURITIES ACT OF 1933, AS AMENDED. EXCHANGE AGREEMENT This Exchange Agreement (this “Agreement”) is entered into as of December 31, 2024 (the “Effective Date”) by and between Streeterville Capital, LLC, a Utah limited liability company (“Investor”), and Intrusion, Inc., a Delaware

January 3, 2025 EX-99.2

EXCHANGE AGREEMENT

Exhibit 99.2 THE EXCHANGE CONTEMPLATED HEREIN IS INTENDED TO COMPORT WITH THE REQUIREMENTS OF SECTION 3(a)(9) OF THE SECURITIES ACT OF 1933, AS AMENDED. EXCHANGE AGREEMENT This Exchange Agreement (this “Agreement”) is entered into as of December 30, 2024 (the “Effective Date”) by and between Streeterville Capital, LLC, a Utah limited liability company (“Investor”), and Intrusion, Inc., a Delaware

January 3, 2025 EX-99.1

EXCHANGE AGREEMENT

Exhibit 99.1 THE EXCHANGE CONTEMPLATED HEREIN IS INTENDED TO COMPORT WITH THE REQUIREMENTS OF SECTION 3(a)(9) OF THE SECURITIES ACT OF 1933, AS AMENDED. EXCHANGE AGREEMENT This Exchange Agreement (this “Agreement”) is entered into as of December 30, 2024 (the “Effective Date”) by and between Streeterville Capital, LLC, a Utah limited liability company (“Investor”), and Intrusion, Inc., a Delaware

January 3, 2025 EX-99.4

EXCHANGE AGREEMENT

Exhibit 99.4 THE EXCHANGE CONTEMPLATED HEREIN IS INTENDED TO COMPORT WITH THE REQUIREMENTS OF SECTION 3(a)(9) OF THE SECURITIES ACT OF 1933, AS AMENDED. EXCHANGE AGREEMENT This Exchange Agreement (this “Agreement”) is entered into as of January 2, 2025 (the “Effective Date”) by and between Streeterville Capital, LLC, a Utah limited liability company (“Investor”), and Intrusion, Inc., a Delaware co

January 3, 2025 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 30, 2024 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File N

December 20, 2024 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 17, 2024 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File N

December 17, 2024 EX-10.35

Exchange Agreement by and between the Registrant and Streeterville Capital, LLC, dated as of December 6, 2024

Exhibit 10.35 THE EXCHANGE CONTEMPLATED HEREIN IS INTENDED TO COMPORT WITH THE REQUIREMENTS OF SECTION 3(a)(9) OF THE SECURITIES ACT OF 1933, AS AMENDED. EXCHANGE AGREEMENT This Exchange Agreement (this “Agreement”) is entered into as of December 6, 2024 (the “Effective Date”) by and between Streeterville Capital, LLC, a Utah limited liability company (“Investor”), and Intrusion, Inc., a Delaware

December 17, 2024 S-3/A

As filed with the Securities and Exchange Commission on December 17, 2024

As filed with the Securities and Exchange Commission on December 17, 2024 Registration No.

November 27, 2024 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 21, 2024 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File N

November 22, 2024 EX-99.1

EXCHANGE AGREEMENT

Exhibit 99.1 THE EXCHANGE CONTEMPLATED HEREIN IS INTENDED TO COMPORT WITH THE REQUIREMENTS OF SECTION 3(a)(9) OF THE SECURITIES ACT OF 1933, AS AMENDED. EXCHANGE AGREEMENT This Exchange Agreement (this “Agreement”) is entered into as of November 18, 2024 (the “Effective Date”) by and between Streeterville Capital, LLC, a Utah limited liability company (“Investor”), and Intrusion, Inc., a Delaware

November 22, 2024 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 18, 2024 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File N

November 13, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 0-20191 I

November 12, 2024 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 11, 2024 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File N

November 12, 2024 EX-99.1

Intrusion Inc. Reports Third Quarter 2024 Results Improved Intrusion Shield customer penetration continues to enhance financial performance

Exhibit 99.1 Intrusion Inc. Reports Third Quarter 2024 Results Improved Intrusion Shield customer penetration continues to enhance financial performance PLANO, Texas, November 12, 2024 (ACCESSWIRE) - Intrusion Inc. (NASDAQ: INTZ), a leader in cyberattack prevention solutions, announced today financial results for the third quarter ended September 30, 2024. Recent Financial & Business Highlights: ·

November 12, 2024 8-K

Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 12, 2024 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File N

October 29, 2024 8-K

Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 28, 2024 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Nu

October 8, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 8, 2024 INTRUSION INC. (E

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 8, 2024 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Num

October 8, 2024 EX-99.1

Intrusion Inc. to Host Business Update Call on October 9, 2024

Exhibit 99.1 Intrusion Inc. to Host Business Update Call on October 9, 2024 PLANO, Texas, October 7, 2024 (ACCESSWIRE) – Intrusion Inc. (NASDAQ: INTZ), a leader in cyberattack prevention solutions, will host a business update call on Wednesday, October 9, 2024, at 4:15 p.m. Eastern Daylight Time to provide a corporate update on Intrusion’s continued customer traction, recent business activities, a

September 26, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 26, 2024 INTRUSION INC.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 26, 2024 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File

September 26, 2024 EX-99.1

Intrusion Inc. Announces $2.0 Million Contract with the U.S. Department of Defense for Cybersecurity Services

Exhibit 99.1 Intrusion Inc. Announces $2.0 Million Contract with the U.S. Department of Defense for Cybersecurity Services PLANO, TX, September 26, 2024 - Intrusion Inc. (NASDAQ: INTZ), a leader in cyberattack prevention solutions, today announced a $2.0 million contract with the U.S. Department of Defense (DoD) to support its cybersecurity efforts. This contract, facilitated through a prime contr

September 3, 2024 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 27, 2024 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Num

August 15, 2024 S-3

As filed with the Securities and Exchange Commission on August 14, 2024

As filed with the Securities and Exchange Commission on August 14, 2024 Registration No.

August 15, 2024 EX-4.15

Form of Senior Indenture

EXHIBIT 4.15 INTRUSION INC. as the Company and as Trustee Senior Indenture Dated as of , 20 TABLE OF CONTENTS PAGE ARTICLE 1 DEFINITIONS AND INCORPORATION BY REFERENCE 4 Section 1.01. Definitions 4 Section 1.02. Other Definitions 8 Section 1.03. Incorporation by Reference of Trust Indenture Act 8 Section 1.04. Rules of Construction 8 ARTICLE 2 THE SECURITIES 9 Section 2.01. Form and Dating 9 Secti

August 15, 2024 EX-4.17

Form of Subordinated Indenture

EXHIBIT 4.17 INTRUSION INC. as the Company and as Trustee Subordinated Indenture Dated as of , 20 TABLE OF CONTENTS PAGE ARTICLE 1 DEFINITIONS AND INCORPORATION BY REFERENCE Section 1.01. Definitions 5 Section 1.02. Other Definitions 9 Section 1.03. Incorporation by Reference of Trust Indenture Act 9 Section 1.04. Rules of Construction 9 ARTICLE 2 THE SECURITIES Section 2.01. Form and Dating 10 Se

August 15, 2024 EX-FILING FEES

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-3 (Form Type) INTRUSION INC. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Fees Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Car

August 14, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 0-20191 INTRUS

August 13, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 13, 2024 INTRUSION INC. (E

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 13, 2024 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Num

August 13, 2024 EX-99.1

Intrusion Inc. Reports Second Quarter 2024 Results Intrusion Shield customer penetration continues to expand

Exhibit 99.1 Intrusion Inc. Reports Second Quarter 2024 Results Intrusion Shield customer penetration continues to expand PLANO, Texas, August 13, 2024 (ACCESSWIRE) - Intrusion Inc. (NASDAQ: INTZ), a leader in cyberattack prevention solutions, announced today financial results for the second quarter ended June 30, 2024. Recent Financial & Business Highlights: · Revenue for the second quarter incre

July 30, 2024 424B1

Intrusion Inc. 1,505,179 Shares of Common Stock

Filed Pursuant to Rule 424(b)(1) Registration No. 333-280914 PROSPECTUS Intrusion Inc. 1,505,179 Shares of Common Stock This prospectus relates to the offer and sale, from time to time, by the selling security holder identified in this prospectus, or their permitted transferees (the “Selling Holders”), of up to 1,505,179 shares of our common stock, par value $0.01 per share (“common stock”), inclu

July 25, 2024 CORRESP

Intrusion Inc. 101 East Park Blvd, Suite 1200 Plano, Texas 75074 (972) 234-6400

Intrusion Inc. 101 East Park Blvd, Suite 1200 Plano, Texas 75074 (972) 234-6400 July 25, 2024 VIA EDGAR Securities and Exchange Commission Division of Corporation Finance Office of Technology 100 F. Street, N.E. Washington, D.C. 20549 Attention: Mariam Mansaray and Jan Woo RE: Intrusion Inc. Registration Statement on Form S-1 SEC File No. 333-280914 (the “Registration Statement”) REQUEST FOR ACCEL

July 19, 2024 EX-10.38

Registration Rights Agreement, dated June 3, 2024, by and between Registrant and Streeterville Capital, LLC.

Exhibit 10.38 REGISTRATION RIGHTS AGREEMENT THIS REGISTRATION RIGHTS AGREEMENT (this “Agreement”) dated as of July 3, 2024 is made by and between STREETERVILLE CAPITAL, LLC, a Utah limited liability company (the “Investor”), and INTRUSION INC., a Delaware corporation (the “Company”). The Investor and the Company may be referred to herein individually as a “Party” and collectively as the “Parties.”

July 19, 2024 EX-3.1

Amended and Restated Certificate of Incorporation of the Company, dated as of March 15, 2024.

Exhibit 3.1 AMENDED AND RESTATED Certificate of Incorporation of Intrusion Inc. Intrusion Inc. (hereinafter referred to as the “Corporation”), a corporation organized and existing under the laws of the State of Delaware, hereby certifies as follows: FIRST: The date of filing of the original Certificate of Incorporation of the Corporation, in the name of Optical Data Systems, Inc. (the “Certificate

July 19, 2024 S-1

As filed with the U.S. Securities and Exchange Commission on July 19, 2024

Table of Contents As filed with the U.S. Securities and Exchange Commission on July 19, 2024 Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 INTRUSION INC. (Exact name of registrant as specified in its charter) Delaware 3576 75-1911917 (State or other jurisdiction of incorporation or orga

July 19, 2024 EX-10.37

Standby Equity Purchase Agreement, dated June 3, 2024, by and between Registrant and Streeterville Capital, LLC.

Exhibit 10.37 STANDBY EQUITY PURCHASE AGREEMENT THIS STANDBY EQUITY PURCHASE AGREEMENT (this “Agreement”) dated as of July 3, 2024 is made by and between STREETERVILLE CAPITAL, LLC, a Utah limited liability company (the “Investor”), and INTRUSION INC., a Delaware corporation (the “Company”). The Investor and the Company may be referred to herein individually as a “Party” and collectively as the “P

July 19, 2024 EX-3.3

Certificate of Designations of Preferred Stock of the Registrant

Exhibit 3.3 CERTIFICATE OF DESIGNATIONS OF PREFERENCES AND RIGHTS OF SERIES A PREFERRED STOCK of Intrusion Inc. a Delaware corporation Pursuant to Section 151 of the Delaware General Corporation Law The undersigned, Anthony Scott, hereby certifies that: 1. He is the duly elected Chief Executive Officer of Intrusion Inc., a Delaware corporation (“Corporation”). 2. A resolution was adopted and appro

July 19, 2024 EX-FILING FEES

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Table FORM S-1 (Form Type) INTRUSION INC. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price(1) Fee Rate Amount of Registration Fee Fees to be paid Equity C

July 15, 2024 DEF 14A

SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Definitive Proxy Statement ☐ Definitive Additional Materials ☐ Soliciting Material Pursuant to § 240.

July 10, 2024 EX-10.1

Standby Equity Purchase Agreement, dated July 3, 2024

Exhibit 10.1 STANDBY EQUITY PURCHASE AGREEMENT THIS STANDBY EQUITY PURCHASE AGREEMENT (this “Agreement”) dated as of July 3, 2024 is made by and between STREETERVILLE CAPITAL, LLC, a Utah limited liability company (the “Investor”), and INTRUSION INC., a Delaware corporation (the “Company”). The Investor and the Company may be referred to herein individually as a “Party” and collectively as the “Pa

July 10, 2024 8-K

Unregistered Sales of Equity Securities, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 3, 2024 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Number

July 5, 2024 PRE 14A

SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☒ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy Statement ☐ Definitive Additional Materials ☐ Soliciting Material Pursuant to § 240.

July 1, 2024 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 1, 2024 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Number

June 5, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 30, 2024 INTRUSION INC. (Exac

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 30, 2024 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Number

June 5, 2024 EX-99.1

EXCHANGE AGREEMENT

Exhibit 99.1 THE EXCHANGE CONTEMPLATED HEREIN IS INTENDED TO COMPORT WITH THE REQUIREMENTS OF SECTION 3(a)(9) OF THE SECURITIES ACT OF 1933, AS AMENDED. EXCHANGE AGREEMENT This Exchange Agreement (this “Agreement”) is entered into as of May 30, 2024 (the “Effective Date”) by and between Streeterville Capital, LLC, a Utah limited liability company (“Investor”), and Intrusion, Inc., a Delaware corpo

May 16, 2024 EX-10.1

Exchange Agreement by and between the Registrant and Streeterville Capital, LLC, dated as of May 10, 2024

Exhibit 10.1 THE EXCHANGE CONTEMPLATED HEREIN IS INTENDED TO COMPORT WITH THE REQUIREMENTS OF SECTION 3(a)(9) OF THE SECURITIES ACT OF 1933, AS AMENDED. EXCHANGE AGREEMENT This Exchange Agreement (this “Agreement”) is entered into as of May 10, 2024 (the “Effective Date”) by and between Streeterville Capital, LLC, a Utah limited liability company (“Investor”), and Intrusion, Inc., a Delaware corpo

May 16, 2024 8-K

Unregistered Sales of Equity Securities, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 10, 2024 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Number

May 15, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 0-20191 INTRU

May 15, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 9, 2024 INTRUSION INC. (Exact

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 9, 2024 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Number)

May 15, 2024 EX-4.1

Certificate of Amendment to Certificate of Designations of Preferences and Rights of Series A Preferred Stock of the Registrant, filed by the Registrant with the State of Delaware, Secretary of State, Division of Corporations on May 9, 2024

Exhibit 4.1 State of Delaware Secretary of State Division of Corporations Delivered 08:30 AM 05/09/2024 FILED 08:30 AM 05/09/2024 SR 20241979061 - File Number 2538388 CERTIFICATE OF AMENDMENT TO CERTIFICATE OF DESIGNATIONS OF PREFERENCES AND RIGHTS OF SERIES A PREFERRED STOCK OF Intrusion Inc. a Delaware corporation. Pursuant to Section 242 of the General Corporation Law of the State of Delaware,

May 14, 2024 EX-99.1

Intrusion Inc. Reports First Quarter 2024 Results Intrusion Shield customer penetration continues to expand

Exhibit 99.1 Intrusion Inc. Reports First Quarter 2024 Results Intrusion Shield customer penetration continues to expand PLANO, Texas, May 14, 2024 (ACCESSWIRE) - Intrusion Inc. (NASDAQ: INTZ), a leader in cyberattack prevention solutions, announced today financial results for the first quarter ended March 31, 2024. Recent Financial & Business Highlights: · Improved first quarter EPS to $(0.94) pe

May 14, 2024 8-K

Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 14, 2024 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Number

May 2, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 1, 2024 INTRUSION INC. (Exact

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 1, 2024 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Number)

April 23, 2024 8-K

Entry into a Material Definitive Agreement, Other Events, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 22, 2024 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Numb

April 23, 2024 EX-99.2

Intrusion Inc. Announces Private Placement Subscription Agreement

Exhibit 99.2 Intrusion Inc. Announces Private Placement Subscription Agreement PLANO, Texas, April 22, 2024 (ACCESSWIRE) - Intrusion Inc. (NASDAQ: INTZ), a leader in cyberattack prevention solutions, today announced today that it had entered into a private placement subscription agreement pursuant to which Intrusion sold to purchasers in a Private Offering (the "Offering") an aggregate of 1,348,56

April 23, 2024 EX-99.1

Intrusion Inc. 101 E. Park Blvd., Suite 1200 Plano, TX 75074 Term Sheet for Units Offering April 19, 2024

Exhibit 99.1 Intrusion Inc. 101 E. Park Blvd., Suite 1200 Plano, TX 75074 Term Sheet for Units Offering April 19, 2024 This Term Sheet for Units Offering (the “Term Sheet”) summarizes the principal terms of an offering (the “Offering”) of certain units of securities of Intrusion Inc., a Delaware corporation (the “Company”) as described below. The discussion of the terms of the offering set forth h

April 12, 2024 8-K

Unregistered Sales of Equity Securities, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 8, 2024 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Numbe

April 12, 2024 EX-10.1

Form of New Common Stock Purchase Warrant

Exhibit 10.1 NEITHER THIS SECURITY NOR THE SECURITIES INTO WHICH THIS SECURITY IS EXERCISABLE HAS BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGIST

April 5, 2024 8-K

Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities, Other Events, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 1, 2024 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Numbe

April 5, 2024 EX-99.1

EXCHANGE AGREEMENT

Exhibit 99.1 EXCHANGE AGREEMENT This Exchange Agreement (this “Agreement”) is entered into as of April 3, 2024 (the “Effective Date”) by and between Streeterville Capital, LLC, a Utah limited liability company (“Investor”), and Intrusion, Inc., a Delaware corporation (“Company”). A. Company previously issued to Investor 9,275 shares of its Series A Preferred Stock (the “Series A Preferred”) in exc

April 1, 2024 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE FISCAL YEAR ENDED DECEMBER 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to COMMISSION FILE NUMBER 001-396

April 1, 2024 EX-97.0

Compensation Recovery Policy

EXHIBIT 97 COMPENSATION RECOVERY POLICY Effective December 1, 2023 Intrusion, Inc.

April 1, 2024 EX-10.35

Lease by and between the Registrant and JBA Portfolio, LLC, dated as of September 29, 2023

EXHIBIT 10.35 OFFICE LEASE C This Lease (the “Lease ”) is made this September 29 , 2023 (“ Effective Date ”) by and between JBA Portfolio, LLC , a Delaware limited liability company with an address of 7324 Southwest Freeway, Suite 1900 , Houston, TX, 77074 ( “Landlord ”) and Intrusion Inc . , a Delaware corporation (“ Tenant ”) . BASIC LEASE PROVISIONS BUILDING: The improvements known as Plano Tow

March 28, 2024 EX-3.1

Certificate of Amendment to Certificate of Incorporation of the Company, dated as of March 15, 2024

Exhibit 3.1 State of Delaware Secretary of State Division of Corporations Delivered 08:28 AM 03/21/2024 FILED 08:28 AM 03/21/2024 SR 20241099965 - File Number 2538388 CERTIFICATE OF AMENDMENT TO CERTIFICATE OF INCORPORATION OF Intrusion Inc. Intrusion Inc., a corporation organized and existing under and by virtue of the General Corporation Law of the State of Delaware (the "Corporation"), does her

March 28, 2024 8-K/A

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 21, 2024 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (

March 27, 2024 EX-3.1

Certificate of Amendment to Certificate of Incorporation of the registrant, dated March 21, 2024.

Exhibit 3.1 State of Delaware Secretary of State Division of Corporations Delivered 08:28 AM 03/21/2024 FILED 08:28 AM 03/21/2024 SR 20241099965 - File Number 2538388 CERTIFICATE OF AMENDMENT TO CERTIFICATE OF INCORPORATION OF Intrusion Inc. Intrusion Inc., a corporation organized and existing under and by virtue of the General Corporation Law of the State of Delaware (the "Corporation"), does her

March 27, 2024 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 21, 2024 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Numb

March 26, 2024 8-K

Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 26, 2024 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Numb

March 26, 2024 EX-99.1

Intrusion Inc. Reports Fourth Quarter and Full Year 2023 Results

Exhibit 99.1 Intrusion Inc. Reports Fourth Quarter and Full Year 2023 Results PLANO, Texas, March 26, 2024 (ACCESSWIRE) - Intrusion Inc. (NASDAQ: INTZ), a leader in cyberattack prevention solutions, announced today financial results for the fourth quarter and full year ended December 31, 2023. Recent Financial & Business Highlights: · Improved full year EPS to $(0.57) per share from $(0.82) per sh

March 22, 2024 8-K

Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 11, 2024 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Numb

March 18, 2024 EX-99.1

Intrusion, Inc. Announces 1-for-20 Reverse Stock Split & Exchange Agreement of Debt to Preferred Stock

Exhibit 99.1 Intrusion, Inc. Announces 1-for-20 Reverse Stock Split & Exchange Agreement of Debt to Preferred Stock PLANO, Texas, March 18, 2024 (ACCESSWIRE) - Intrusion Inc. (NASDAQ: INTZ), a leader in cyberattack prevention solutions (the "Company" or "Intrusion"), today announced that following approval from stockholders at the Special Meeting of Stockholders on March 15, 2024, the Company inte

March 18, 2024 EX-10.2

Form of Partitioned Promissory Note, Note #1 dated March 15, 2024, by and between Registrant and Streeterville Capital, LLC

Exhibit 10.2 Partitioned Note Issuance Date: March 15, 2024 Principal Amount: U.S. $3,007,237.26 FOR VALUE RECEIVED, pursuant to this Partitioned Note (this “Note”), Intrusion Inc., a Delaware corporation (“Borrower”), promises to pay to Streeterville Capital, LLC, a Utah limited liability company, or its successors or assigns (“Lender”), the principal amount as set forth forth above and any inter

March 18, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 15, 2024 INTRUSION INC. (Ex

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 15, 2024 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Numb

March 18, 2024 EX-10.1

Exchange Agreement by and between the Registrant and Streeterville Capital, LLC, dated as of March 15, 2024

Exhibit 10.1 1.1. THE EXCHANGE CONTEMPLATED HEREIN IS INTENDED TO COMPORT WITH THE REQUIREMENTS OF SECTION 3(a)(9) OF THE SECURITIES ACT OF 1933, AS AMENDED. EXCHANGE AGREEMENT This Exchange Agreement (this “Agreement”) is entered into as of March 15, 2024 (“Effective Date”) by and between Streeterville Capital, LLC, a Utah limited liability company (“Lender”), and Intrusion Inc., a Delaware corpo

March 14, 2024 424B5

Intrusion Inc. 4,359,374 Shares of Common Stock, Warrants to Purchase 8,718,748 Shares of Common Stock and Up to 8,718,748 Shares of Common Stock Underlying the Warrants

Table of Contents Filed Pursuant to Rule 424(b)(5) Registration No. 333-275974 PROSPECTUS Intrusion Inc. 4,359,374 Shares of Common Stock, Warrants to Purchase 8,718,748 Shares of Common Stock and Up to 8,718,748 Shares of Common Stock Underlying the Warrants This prospectus relates to the resale from time to time by the Selling Securityholders named in this prospectus (including their permitted t

March 13, 2024 8-K

Unregistered Sales of Equity Securities, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 7, 2024 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Numbe

March 13, 2024 424B5

1,378,677 Shares of Common Stock, Warrants to Purchase up to 1,378,677 Shares of Common Stock the Shares of Common Stock underlying the Warrants

Filed Pursuant to Rule 424(b)(5) Registration No. 333-258491 PROSPECTUS SUPPLEMENT (To Prospectus dated August 16, 2021, as amended) 1,378,677 Shares of Common Stock, Warrants to Purchase up to 1,378,677 Shares of Common Stock and the Shares of Common Stock underlying the Warrants This Prospectus Supplement No. 2 (this “Prospectus Supplement No. 2”) relates to the sale of (i) 1,378,677 shares of o

March 13, 2024 EX-99.1

EXCHANGE AGREEMENT

Exhibit 99.1 EXCHANGE AGREEMENT This Exchange Agreement (this “Agreement”) is entered into as of March 7, 2024, by and between Streeterville Capital, LLC, a Utah limited liability company (“Lender”), and Intrusion, Inc., a Delaware corporation (“Borrower”). Capitalized terms used in this Agreement without definition shall have the meanings given to them in the Original Note (as defined below). A.

March 6, 2024 8-K

Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 4, 2024 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Numbe

February 21, 2024 8-K

Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 8, 2024 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Nu

February 20, 2024 SC 13G/A

INTZ / Intrusion Inc. / Hyer Raymond T Passive Investment

SC 13G/A 1 e619273sc13ga-intrusion.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Amendment No. 1 to SCHEDULE 13G [Rule 13d-102] Under the Securities Exchange Act of 1934 INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO SECTION 240.13d-1(b), (c), and (d) AND AMENDMENTS THERETO FILED PURSUANT TO SECTION 240.13d-2 Intrusion Inc. (Name of Issuer) Common Stock (Tit

February 13, 2024 SC 13G/A

INTZ / Intrusion Inc. / Paxton Patsy A - AMENDMENT #3 TO FORM SC 13G Passive Investment

SC 13G/A 1 patsypaxtonsc13ga3.htm AMENDMENT #3 TO FORM SC 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 3) * Intrusion Inc. Name of Issuer) Common Stock, Par Value $0.01 (Title of Class of Securities) 46121E205 (CUSIP Number) December 31, 2023 (Date of Event which Requires Filing of this Settlement)

February 9, 2024 EX-FILING FEES

Filing Fee Table

Exhibit 107 CALCULATION OF FILING FEE TABLE Form S-8 (Form Type) Intrusion Inc. (Exact Name of Registrant as Specified in its Charter) Security Type Security Class Title Fee Calculation Rule Amount Registered (1) Proposed Maximum Offering Price Per Share Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Equity Common stock, par value $0.01 per share Other (2) 2,500,000(3) $0.20

February 9, 2024 EX-99.1

Intrusion Inc. Amended 2021 Omnibus Incentive Plan.

Exhibit 99.1 INTRUSION INC. AMENDED 2021 OMNIBUS INCENTIVE PLAN 1. Purpose The Intrusion Inc. 2021 Omnibus Incentive Plan was originally adopted and became effective on March 25, 2021, which was the date of its adoption by the Board, subject to the approval by the stockholders of the Company. The purpose of the Intrusion Inc. Amended 2021 Omnibus Incentive Plan, which shall be effective upon its a

February 9, 2024 S-8

As filed with the Securities and Exchange Commission on February 9, 2024

As filed with the Securities and Exchange Commission on February 9, 2024 Registration No.

February 9, 2024 EX-99.2

2023 Employee Stock Purchase Plan.

Exhibit 99.2 INTRUSION, INC. 2023 EMPLOYEE STOCK PURCHASE PLAN 1. Establishment of Plan. Intrusion proposes to grant rights to purchase shares of Common Stock to eligible Employees of Intrusion and its Participating Corporations (as hereinafter defined) pursuant to this Plan. Intrusion intends this Plan to qualify as an “employee stock purchase plan” under Section 423 of the Code (including any am

January 31, 2024 EX-99.1

Intrusion’s CEO Issues Letter to Shareholders

Exhibit 99.1 Intrusion’s CEO Issues Letter to Shareholders PLANO, Texas, Jan. 31, 2024 (ACCESSWIRE) - Intrusion, Inc, (Nasdaq: INTZ) a leader in cyber-attack prevention solutions, including zero-days, today issued the following letter to its shareholders from its President & CEO, Tony Scott. Dear Fellow Intrusion Shareholders, In advance of the upcoming shareholder vote on several important matter

January 31, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 31, 2024 INTRUSION INC. (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 31, 2024 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Nu

January 25, 2024 DEF 14A

SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Definitive Proxy Statement ☐ Definitive Additional Materials ☐ Soliciting Material Pursuant to § 240.

January 12, 2024 PRE 14A

SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☒ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy Statement ☐ Definitive Additional Materials ☐ Soliciting Material Pursuant to § 240.

January 9, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 28, 2023 INTRUSION INC.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 28, 2023 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File

January 9, 2024 EX-10.1

Notice of Pendency and Proposed Settlement of Action, dated December 21, 2023

Exhibit 10.1 UNITED STATES DISTRICT COURT DISTRICT OF DELAWARE NATHAN PRAWITT, derivatively on behalf of INTRUSION, INC., Plaintiff, v. JACK B. BLOUNT, MICHAEL L. PAXTON, B. FRANKLIN BYRD, P. JOE HEAD, GARY DAVIS, JAMES F. GERO, ANTHONY SCOTT, ANTHONY J. LEVECCHIO, KATRINKA B. MCCALLUM, JAMIE M. SCHNUR, GREGORY K. WILSON, Defendants, -and- INTRUSION, INC., Nominal Defendant. ) ) ) ) ) ) ) ) ) ) )

January 4, 2024 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 2, 2024 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Num

January 4, 2024 EX-10.1

Note Purchase Agreement by and between the Registrant and Anthony Scott, dated as of January 2, 2024

Exhibit 10.1 Note Purchase Agreement This Note Purchase Agreement (this “Agreement”), dated as of January 2, 2024, is entered into by and between Intrusion Inc., a Delaware corporation (“Company”), and Anthony Scott, an individual and resident of Dallas, Texas, or his heirs, beneficiaries, successors, or assigns (“Investor”). A. Company and Investor are executing and delivering this Agreement in r

December 22, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 19, 2023 INTRUSION INC.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 19, 2023 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File N

December 22, 2023 EX-99.1

EXCHANGE AGREEMENT

Exhibit 99.1 EXCHANGE AGREEMENT This Exchange Agreement (this “Agreement”) is entered into as of December 19, 2023 by and between Streeterville Capital, LLC, a Utah limited liability company (“Lender”), and Intrusion, Inc., a Delaware corporation (“Borrower”). Capitalized terms used in this Agreement without definition shall have the meanings given to them in the Original Note (as defined below).

December 21, 2023 CORRESP

INTRUSION INC. 101 East Park Blvd, Suite 1200 Plano, Texas 75074 December 21, 2023

CORRESP 1 filename1.htm INTRUSION INC. 101 East Park Blvd, Suite 1200 Plano, Texas 75074 December 21, 2023 CORRESPONDENCE FILING VIA EDGAR U.S. Securities and Exchange Commission Department of Corporate Finance Office of Technology 100 F Street, N.E. Washington, D.C. 20549 Attention: Ms. Alexandra Barone Mr. Jeff Kauten Re: Intrusion, Inc. Registration Statement Filed on Resale Form S-1 (File No.

December 21, 2023 EX-3.1

Amended and Restated Bylaws of Intrusion Inc.

Exhibit 3.1 Amended and Restated Bylaws Of Intrusion Inc. a Delaware corporation Adopted December [], 2023 1. Offices. Intrusion Inc. (the “Corporation”) may have an office or offices, and keep the books and records of the Corporation, except as may otherwise be required by applicable law, at such other place or places, either within or without the State of Delaware, as the Board may from time to

December 21, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 18, 2023 INTRUSION INC.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 18, 2023 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File N

December 20, 2023 S-1/A

As filed with the U.S. Securities and Exchange Commission on December 20, 2023

As filed with the U.S. Securities and Exchange Commission on December 20, 2023 Registration No. 333-275974 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 1 to Form S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 INTRUSION INC. (Exact name of registrant as specified in its charter) Delaware 3576 75-1911917 (State or other jurisdiction of incorporat

December 11, 2023 S-1

As filed with the U.S. Securities and Exchange Commission on December 8, 2023

Table of Contents As filed with the U.S. Securities and Exchange Commission on December 8, 2023 Registration No. 333-[] UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 INTRUSION INC. (Exact name of registrant as specified in its charter) Delaware 3576 75-1911917 (State or other jurisdiction of incorporation or

December 11, 2023 EX-FILING FEES

Filing Fee Table

Exhibit 107 CALCULATION OF FILING FEE TABLES Form S-1 (Form Type) Intrusion Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price (1) Fee Rate Amount of Registration Fee Equity Common stock, par value $0.01 pe

November 14, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 14, 2023 INTRUSION INC.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 14, 2023 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File N

November 14, 2023 EX-99.1

Intrusion, Inc. Reports Third Quarter 2023 Results Intrusion Shield gaining traction

Exhibit 99.1 Intrusion, Inc. Reports Third Quarter 2023 Results Intrusion Shield gaining traction PLANO, Texas, November 14, 2023 (ACCESSWIRE) - Intrusion Inc. (NASDAQ: INTZ), a leader in cyberattack prevention solutions, announced today financial results for the third quarter ended September 30, 2023. Recent Financial & Business Highlights: · Improved third quarter EPS to $(0.14) per share from $

November 14, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-39608

November 9, 2023 8-K

Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 8, 2023 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Nu

November 9, 2023 EX-4.3

Form of Placement Agent Warrant

Exhibit 4.2 NEITHER THIS SECURITY NOR THE SECURITIES INTO WHICH THIS SECURITY IS EXERCISABLE HAS BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGISTR

November 9, 2023 EX-10.2

Form of Placement Agent Agreement between the Company and Wellington Shields & Co. LLC dated November 8, 2023

Exhibit 10.2 140 Broadway, New York, New York 10005 November 8, 2023 Intrusion Inc. 101 East Park Blvd., Suite 1200 Plano, Texas 75074 Attention: Anthony Scott, President & Chief Executive Officer Re:Private Investment in Public Equity Dear Mr. Scott: This letter (the “Agreement”) constitutes the agreement between Wellington Shields & Co. LLC (the “Placement Agent”) and Intrusion Inc., a Delaware

November 9, 2023 EX-10.3

Form of Lock-up Agent Agreement

Exhibit 10.3 FORM OF LOCK-UP AGREEMENT November 7, 2023 Intrusion Inc. 101 East Park Blvd., Suite 1200 Plano, Texas 75074 Attention: Anthony Scott, President and Chief Executive Officer Re: Securities Purchase Agreement, dated as of November, 2023 (the “Purchase Agreement”), between Intrusion Inc. (the “Company”) and the purchasers signatory thereto (each, a “Purchaser” and, collectively, the “Pur

November 9, 2023 EX-4.1

Form of Common Stock Purchase Warrant

Exhibit 4.1 NEITHER THIS SECURITY NOR THE SECURITIES INTO WHICH THIS SECURITY IS EXERCISABLE HAS BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGISTR

November 9, 2023 EX-10.1

Form of Securities Purchase Agreement between the Company and the Purchasers dated November 8, 2023

Exhibit 10.1 FORM OF SECURITIES PURCHASE AGREEMENT This Securities Purchase Agreement (this “Agreement”) is dated as of November 8, 2023 and is between Intrusion, Inc., a Delaware corporation (the “Company”), and each purchaser identified on the signature pages hereto (each, including its successors and assigns, a “Purchaser” and collectively the “Purchasers”). WHEREAS, subject to the terms and co

October 27, 2023 8-K

Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 26, 2023 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Nu

October 17, 2023 EX-99.2

[Remainder of page intentionally left blank]

Exhibit 99.2 THE EXCHANGE CONTEMPLATED HEREIN IS INTENDED TO COMPORT WITH THE REQUIREMENTS OF SECTION 3(a)(9) OF THE SECURITIES ACT OF 1933, AS AMENDED. EXCHANGE AGREEMENT This Exchange Agreement (this “Agreement”) is entered into as of October 17, 2023 by and between Streeterville Capital, LLC, a Utah limited liability company (“Lender”), and Intrusion, Inc., a Delaware corporation (“Borrower”).

October 17, 2023 EX-99.1

EXCHANGE AGREEMENT

Exhibit 99.1 EXCHANGE AGREEMENT This Exchange Agreement (this “Agreement”) is entered into as of October 11, 2023 by and between Streeterville Capital, LLC, a Utah limited liability company (“Lender”), and Intrusion, Inc., a Delaware corporation (“Borrower”). Capitalized terms used in this Agreement without definition shall have the meanings given to them in the Original Note (as defined below). A

October 17, 2023 8-K

Unregistered Sales of Equity Securities, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 11, 2023 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Nu

October 12, 2023 SC 13G

INTZ / Intrusion Inc / Hyer Raymond T Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G [Rule 13d-102] Under the Securities Exchange Act of 1934 INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO SECTION 240.

October 10, 2023 EX-99.1

Intrusion Awarded a $5 million Multi-Year Shield Agreement with a Large Telecommunications Provider and Reports Additional Customer Wins

Exhibit 99.1 Intrusion Awarded a $5 million Multi-Year Shield Agreement with a Large Telecommunications Provider and Reports Additional Customer Wins PLANO, Texas, Oct 10, 2023 (GLOBAL NEWSWIRE) - Intrusion, Inc, (NASDAQ: INTZ) a leader in cyber-attack prevention solutions, including zero-days, today announced that it has been awarded a $5 million agreement with a large telecommunications provider

October 10, 2023 RW

Intrusion, Inc. 101 East Park Blvd, Suite 1200 Plano, Texas 75074

Intrusion, Inc. 101 East Park Blvd, Suite 1200 Plano, Texas 75074 Securities and Exchange Commission 100 F Street NE Washington, D.C. 20549-7010 Re: Intrusion Inc. Registration Statement on Form S-1, as amended (File No. 333-273930) CIK No. 0000736012 Application of Withdrawal Ladies and Gentlemen: Pursuant to Rule 477 under the Securities Act of 1933, as amended (the “Securities Act”), Intrusion,

October 10, 2023 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 10, 2023 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Nu

October 2, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 26, 2023 INTRUSION INC.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 26, 2023 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File

October 2, 2023 EX-10.1

Stipulation of Compromise and Settlement, dated September 28, 2023

Exhibit 10.1 UNITED STATES DISTRICT COURT DISTRICT OF DELAWARE NATHAN PRAWITT, derivatively on behalf ) of INTRUSION, INC., ) ) Plaintiff, ) Civil Action No.: 1:22-cv-00735-MN ) v. ) ) JACK B. BLOUNT, MICHAEL L. PAXTON, ) B. FRANKLIN BYRD, P. JOE HEAD, GARY ) ) DAVIS, JAMES F. GERO, ANTHONY ) SCOTT, ANTHONY J. LEVECCHIO, ) KATRINKA B. MCCALLUM, JAMIE M. ) SCHNUR, GREGORY K. WILSON, ) ) Defendants,

October 2, 2023 EX-3.1

Amended and Restated Bylaws of the Company

Exhibit 3.1 AMENDED AND RESTATED CORPORATE BYLAWS OF INTRUSION INC. (A DELAWARE CORPORATION) (EFFECTIVE AS OF SEPTEMBER 27, 2023) ARTICLE 1 NAME AND OFFICES 1.1 NAME. The name of the Corporation is Intrusion Inc., hereinafter referred to as the "Corporation." 1.2 REGISTERED OFFICE AND AGENT. The Corporation shall establish, designate and continuously maintain a registered office and agent in the S

September 18, 2023 EX-4.7

Form of Common Stock Purchase Warrant

Exhibit 4.7 EXHIBIT A-2 COMMON STOCK PURCHASE WARRANT Intrusion Inc. Warrant Shares: Initial Exercise Date: , 2023 THIS COMMON STOCK PURCHASE WARRANT (the “Warrant”) certifies that, for value received, or its assigns (the “Holder”) is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter set forth, at any time on or after the date hereof (the “Initial E

September 18, 2023 S-1/A

As filed with the U.S. Securities and Exchange Commission on September 18, 2023

Table of Contents As filed with the U.S. Securities and Exchange Commission on September 18, 2023 Registration No. 333-273930 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Pre-Effective Amendment No. 2 to Form S-1/A REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 INTRUSION INC. (Exact name of registrant as specified in its charter) Delaware 3576 75-1911917 (State

September 18, 2023 EX-FILING FEES

Filing Fee Table

Exhibit 107 CALCULATION OF FILING FEE TABLES Form S-1 (Form Type) Intrusion Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price (1) Fee Rate Amount of Registration Fee Units (2), consisting of: Equity (i) Co

September 18, 2023 EX-1.1

Form of Placement Agency Agreement, dated September __, 2023, by and between the Company and Joseph Gunnar & Co., LLC

Exhibit 1.1 PLACEMENT AGENCY AGREEMENT , 2023 Intrusion Inc. 101 E. Park Boulevard, Suite 1200 Plano, TX 75074 Ladies and Gentlemen: Introduction. Subject to the terms and conditions herein (this “Agreement”), Intrusion Inc., a Delaware corporation (the “Company”), hereby agrees to sell up to an aggregate of $ million of registered securities of the Company, including, but not limited to, shares (

September 18, 2023 EX-4.6

Form of Warrant Agency Agreement between the Company and Computershare Trust Company N.A.

Exhibit 4.6 INTRUSION INC. and COMPUTERSHARE INC. and COMPUTERSHARE TRUST COMPANY, N.A., collectively, as Warrant Agent Warrant Agency Agreement Dated as of , 2023 1 WARRANT AGENCY AGREEMENT WARRANT AGENCY AGREEMENT, dated as of , 2023 (“Agreement”), between Intrusion Inc., a Delaware corporation (the “Company”), and Computershare Inc., a Delaware corporation (“Computershare”), and its affiliate C

September 11, 2023 8-A12B

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-A FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-A FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 INTRUSION INC. (Exact name of registrant as specified in its charter) Delaware 45-5574718 (State or other jurisdiction of incorporation) (IRS Employer Identification Number) 101 East Park Blvd, Sui

August 28, 2023 FWP

INTRUSION, INC. FREE WRITING PROSPECTUS

Filed Pursuant to Rule 433 of the Securities Act of 1933 Issuer Free Writing Prospectus dated August 25, 2023 Relating to Preliminary Prospectus dated August 25, 2023 Registration No.

August 25, 2023 EX-4.9

Form of Placement Agent Warrant

Exhibit 4.9 PLACEMENT AGENT COMMON STOCK PURCHASE WARRANT Intrusion Inc. Warrant Shares: Initial Exercise Date: , 2023 THIS PLACEMENT AGENT COMMON STOCK PURCHASE WARRANT (the “Warrant”) certifies that, for value received, or its assigns (the “Holder”) is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter set forth, at any time on or after the date he

August 25, 2023 EX-4.7

Form of Common Stock Purchase Warrant

Exhibit 4.7 EXHIBIT A-2 COMMON STOCK PURCHASE WARRANT Intrusion Inc. Warrant Shares: Initial Exercise Date: , 2023 THIS COMMON STOCK PURCHASE WARRANT (the “Warrant”) certifies that, for value received, or its assigns (the “Holder”) is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter set forth, at any time on or after the date hereof (the “Initial E

August 25, 2023 EX-4.6

Form of Warrant Agency Agreement

Exhibit 4.6 INTRUSION INC. and COMPUTERSHARE TRUST COMPANY, N.A., as Warrant Agent Warrant Agency Agreement Dated as of , 2023 1 WARRANT AGENCY AGREEMENT WARRANT AGENCY AGREEMENT, dated as of , 2023 (“Agreement”), between Intrusion Inc., a Delaware corporation (the “Company”), and Computershare Trust Company, N.A. (the “Warrant Agent”). W I T N E S S E T H WHEREAS, pursuant to an offering by the C

August 25, 2023 EX-4.8

Form of Pre-Funded Warrant

Exhibit 4.8 EXHIBIT A-1 PRE-FUNDED COMMON STOCK PURCHASE WARRANT Intrusion Inc. Warrant Shares: Initial Exercise Date: , 2023 THIS PRE-FUNDED COMMON STOCK PURCHASE WARRANT (the “Warrant”) certifies that, for value received, or its assigns (the “Holder”) is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter set forth, at any time on or after the date

August 25, 2023 S-1/A

As filed with the U.S. Securities and Exchange Commission on August 25, 2023

Table of Contents As filed with the U.S. Securities and Exchange Commission on August 25, 2023 Registration No. 333-273930 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Pre-Effective Amendment No. 1 to Form S-1/A REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 INTRUSION INC. (Exact name of registrant as specified in its charter) Delaware 3576 75-1911917 (State or

August 25, 2023 EX-10.27

Form of Securities Purchase Agreement

Exhibit 10.27 SECURITIES PURCHASE AGREEMENT This Securities Purchase Agreement (this “Agreement”) is dated as of , 2023, between Intrusion Inc., a Delaware corporation (the “Company”), and each purchaser identified on the signature pages hereto (each, including its successors and assigns, a “Purchaser” and collectively the “Purchasers”). WHEREAS, subject to the terms and conditions set forth in th

August 25, 2023 EX-1.1

Form of Placement Agency Agreement, dated August __, 2023, by and between the Company and Joseph Gunnar & Co., LLC

Exhibit 1.1 PLACEMENT AGENCY AGREEMENT , 2023 Intrusion Inc. 101 E. Park Boulevard, Suite 1200 Plano, TX 75074 Ladies and Gentlemen: Introduction. Subject to the terms and conditions herein (this “Agreement”), Intrusion Inc., a Delaware corporation (the “Company”), hereby agrees to sell up to an aggregate of $ million of registered securities of the Company, including, but not limited to, shares (

August 14, 2023 EX-99.1

Intrusion, Inc. Reports Second Quarter 2023 Results INTRUSION Shield revenue continues to gain traction

Exhibit 99.1 Intrusion, Inc. Reports Second Quarter 2023 Results INTRUSION Shield revenue continues to gain traction PLANO, Texas, August 14, 2023 (GLOBE NEWSWIRE) - Intrusion Inc. (NASDAQ: INTZ), a leader in cyberattack prevention solutions, announced today financial results for the second quarter ended June 30, 2023. Recent Financial & Business Highlights: · Second quarter revenue of $1.5 millio

August 14, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 14, 2023 INTRUSION INC. (E

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 14, 2023 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Num

August 14, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-39608 INTR

August 11, 2023 S-1

As filed with the U.S. Securities and Exchange Commission on August 11, 2023

Table of Contents As filed with the U.S. Securities and Exchange Commission on August 11, 2023 Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 INTRUSION INC. (Exact name of registrant as specified in its charter) Delaware 3576 75-1911917 (State or other jurisdiction of incorporation or or

August 11, 2023 EX-21.1

List of Subsidiaries

Exhibit 21.1 List of Subsidiaries of Intrusion Inc. Name of Subsidiary Jurisdiction Name under which doing business Intrusion.com GmbH* Germany Intrusion Inc. * 100% owned subsidiary of Intrusion Inc.

August 11, 2023 EX-FILING FEES

Filing Fee Table

Exhibit 107 CALCULATION OF FILING FEE TABLES Form S-1 (Form Type) Intrusion Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price (1) Fee Rate Amount of Registration Fee Units (2), consisting of: Equity (i) Co

August 7, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 7, 2023 INTRUSION INC. (Ex

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 7, 2023 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Numb

August 7, 2023 EX-10.2

Amendment to Forbearance Agreement, dated as of August 7, 2023, between Intrusion Inc. and Streeterville Capital, LLC

Exhibit 10.2 AMENDMENT TO FORBEARANCE AGREEMENT This Amendment to Forbearance Agreement (this “Amendment”) is entered into as of August 7, 2023, by and between Streeterville Capital, LLC, a Utah limited liability company (“Lender”), and Intrusion Inc., a Delaware corporation (“Borrower”). Capitalized terms used in this Amendment without definition shall have the meanings given to them in the Forbe

August 7, 2023 EX-10.1

Forbearance and Standstill Agreement, dated as of August 2, 2023, between Intrusion Inc. and Streeterville Capital, LLC

Exhibit 10.1 FORBEARANCE AND STANDSTILL AGREEMENT This Forbearance and Standstill Agreement (this “Agreement”) is entered into as of August 2, 2023 by and between Streeterville Capital, LLC, a Utah limited liability company (“Lender”), and Intrusion Inc., a Delaware corporation (“Borrower”). Capitalized terms used in this Agreement without definition shall have the meanings given to them in the No

July 20, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 17, 2023 INTRUSION INC. (Exa

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 17, 2023 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Numbe

July 20, 2023 EX-99.1

Intrusion, Inc. Announces Preliminary Second Quarter 2023 Results Announces date for the release of its second quarter 2023 financial results

Exhibit 99.1 Intrusion, Inc. Announces Preliminary Second Quarter 2023 Results Announces date for the release of its second quarter 2023 financial results PLANO, Texas, July 17, 2023 (GLOBE NEWSWIRE) - Intrusion Inc. (NASDAQ: INTZ), a leader in cyberattack prevention solutions, today announced preliminary financial results for the period ended June 30, 2023. Top-line revenues for Intrusion Shield

May 25, 2023 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 19, 2023 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Number

May 22, 2023 EX-10.1

Intrusion Inc. Amended 2021 Omnibus Incentive Plan

EXHIBIT 10.1 INTRUSION INC. AMENDED 2021 OMNIBUS INCENTIVE PLAN 1. Purpose. The Intrusion Inc. 2021 Omnibus Incentive Plan was originally adopted and became effective on March 25, 2021, which was the date of its adoption by the Board, subject to the approval by the stockholders of the Company. The purpose of the Intrusion Inc. Amended 2021 Omnibus Incentive Plan, which shall be effective upon its

May 22, 2023 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 16, 2023 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Number

May 22, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 16, 2023 INTRUSION INC. (Exac

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 16, 2023 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Number

May 15, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 0-20191 INTRU

May 11, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 11, 2023 INTRUSION INC. (Exac

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 11, 2023 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Number

May 11, 2023 EX-99.1

Intrusion, Inc. Reports First Quarter 2023 Results Intrusion Shield Continues to Gain Traction

Exhibit 99.1 Intrusion, Inc. Reports First Quarter 2023 Results Intrusion Shield Continues to Gain Traction PLANO, Texas, May 11, 2023 (GLOBE NEWSWIRE) - Intrusion Inc. (NASDAQ: INTZ), a leader in cyberattack prevention solutions, announced today financial results for the first quarter ended March 31, 2023. Recent Financial & Business Highlights: · First quarter revenue of $1.3 million was down $0

May 2, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 28, 2023 INTRUSION INC. (Ex

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 28, 2023 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Numb

May 2, 2023 EX-99.1

INTRUSION to Announce First Quarter 2023 Financial Results on Thursday, May 11, 2023

Exhibit 99.1 INTRUSION to Announce First Quarter 2023 Financial Results on Thursday, May 11, 2023 PLANO, Texas, May 1, 2023 (GLOBE NEWSWIRE) - INTRUSION Inc. (NASDAQ: INTZ), a leader in cyberattack prevention solutions, will release its first quarter 2023 financial results on Thursday, May 11, 2023, after market close. In conjunction with the report, Tony Scott, CEO, and Kimberly Pinson, CFO, will

May 2, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 1, 2023 INTRUSION INC. (Exact

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 1, 2023 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Number)

April 14, 2023 DEF 14A

2023 Employee Stock Purchase Plan of the Registrant

SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Definitive Proxy Statement ☐ Definitive Additional Materials ☐ Soliciting Material Pursuant to § 240.

April 11, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 6, 2023 INTRUSION INC. (Exa

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 6, 2023 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Numbe

April 11, 2023 424B5

Up to $15,000,000

PROSPECTUS SUPPLEMENT Filed Pursuant to Rule 424(b)(5) (to Prospectus dated August 16, 2021 and the Prospectus Supplements dated August 16, 2021, March 28, 2022 and August 4, 2022) Registration No.

March 31, 2023 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE FISCAL YEAR ENDED DECEMBER 31, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to COMMISSION FILE NUMBER 001-396

March 31, 2023 EX-21

List of Subsidiaries of Registrant

EXHIBIT 21 Intrusion Inc. and Subsidiaries Subsidiaries of the Registrant The following table lists the subsidiaries of the Registrant as of December 31, 2022, the state or other jurisdiction of incorporation and the names under which such subsidiaries do business. The Registrant owns all of the outstanding voting securities of each subsidiary. Name of Subsidiary Jurisdiction Name under which doin

March 31, 2023 EX-99.1

FIRST AMENDMENT OF EXECUTIVE EMPLOYMENT AGREEMENT

Exhibit 99.1 FIRST AMENDMENT OF EXECUTIVE EMPLOYMENT AGREEMENT This Agreement to Amend (“First Amendment”), made, entered into and effective as of the 27th day of March, 2023 (the “Effective Date”), by and between Intrusion Inc., a Delaware corporation (the “Company” or “Intrusion”), and Anthony Scott (“Executive”), is an amendment to that Executive Employment Agreement certain between the Company

March 31, 2023 EX-10.19

Form of Non-Qualified Stock Option Agreement to the Intrusion Inc. 2021 Omnibus Incentive Plan

EXHIBIT 10.19 INTRUSION INC. 2021 OMNIBUS INCENTIVE PLAN NON-QUALIFIED STOCK OPTION AWARD NOTICE Participant has been granted a Non-Qualified Stock Option in accordance with the terms set forth in this Award Notice, and subject to the terms and conditions of the Plan and the Non-Qualified Stock Option Agreement to which this Award Notice is attached. Capitalized terms used and not defined in this

March 31, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 14, 2023 INTRUSION INC. (Ex

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 14, 2023 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Numb

March 31, 2023 EX-10.18

Form of Restricted Stock Award Agreement to the Intrusion Inc. 2021 Omnibus Incentive Plan

EXHIBIT 10.18 INTRUSION, INC. 2021 OMNIBUS INCENTIVE PLAN RESTRICTED STOCK AWARD NOTICE Participant has been granted a Restricted Stock Award in accordance with the terms set forth in this Award Notice, and subject to the terms and conditions of the Plan and the Restricted Stock Award Agreement to which this Notice is attached. Capitalized terms used and not defined in this Award Notice will have

March 16, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 14, 2023 INTRUSION INC. (Ex

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 14, 2023 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Numb

March 6, 2023 EX-99.1

Intrusion, Inc. Reports Fourth Quarter and Full Year 2022 Results Intrusion Shield Gains Traction Year over Year

Exhibit 99.1 Intrusion, Inc. Reports Fourth Quarter and Full Year 2022 Results Intrusion Shield Gains Traction Year over Year PLANO, Texas, March 6, 2023 (GLOBE NEWSWIRE) - Intrusion Inc. (NASDAQ: INTZ), a leader in cyberattack prevention solutions, announced today financial results for the fourth quarter and full year ended December 31, 2022. Recent Financial & Business Highlights: · Fourth quart

March 6, 2023 8-K

Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 6, 2023 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Numbe

March 1, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 23, 2023 INTRUSION INC.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 23, 2023 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File N

March 1, 2023 EX-4.1

Note Purchase Agreement dated February 23, 2023, by and between the Company and Streeterville Capital, LLC

Exhibit 4.1 Exhibit 10.1 Exhibit 10.2 Note Purchase Agreement This Note Purchase Agreement (this “Agreement”), dated as of February 23, 2023, is entered into by and between Intrusion Inc., a Delaware corporation (“Company”), and Streeterville Capital, LLC, a Utah limited liability company, its successors and/or assigns (“Investor”). A. Company and Investor are executing and delivering this Agreeme

February 9, 2023 SC 13G/A

INTZ / Intrusion Inc. / Paxton Patsy A - SCHEDULE 13G AMENDMENT Passive Investment

SC 13G/A 1 patsypaxtonsc13ga2.htm SCHEDULE 13G AMENDMENT UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2) * Intrusion Inc. Name of Issuer) Common Stock, Par Value $0.01 (Title of Class of Securities) 46121E205 (CUSIP Number) December 31, 2022 (Date of Event which Requires Filing of this Settlement) Chec

February 8, 2023 SC 13G/A

INTZ / Intrusion Inc. / GOLDMAN SACHS GROUP INC Passive Investment

SC 13G/A 1 INTRUSION.txt UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* INTRUSION INC - (Name of Issuer) Common Stock, par value $0.01 per share - (Title of Class of Securities) 46121E205 - (CUSIP Number) December 30, 2022 - (Date of Event Which Requires Filing of this Statement) Check the appropriat

January 17, 2023 8-K

Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 11, 2023 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Nu

January 17, 2023 EX-10.1

Amendment dated January 11, 2023, to the Securities Purchase Agreement dated March 10, 2022, by and between the Registrant and Streeterville Capital, LLC

Exhibit 10.1 GLOBAL AMENDMENT This Global Amendment (this “Amendment”) is entered into effective as of the 11th day of January, 2023 (the “Effective Date”) by and between Intrusion Inc., a Delaware corporation (“Borrower”), and Streeterville Capital, LLC, a Utah limited liability company, or its successors and/or assigns (“Lender”). Capitalized terms used in this Amendment without definition shall

December 21, 2022 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 16, 2022 INTRUSION INC.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 16, 2022 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File N

November 14, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-39608

November 3, 2022 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 3, 2022 INTRUSION INC. (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 3, 2022 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Nu

November 3, 2022 EX-99.1

Intrusion, Inc. Reports Third Quarter of Fiscal 2022 Results New Intrusion Shield products reach general availability

Exhibit 99.1 Intrusion, Inc. Reports Third Quarter of Fiscal 2022 Results New Intrusion Shield products reach general availability PLANO, Texas, November 3, 2022 (GLOBE NEWSWIRE) - Intrusion Inc. (NASDAQ: INTZ), a leader in cyberattack prevention solutions, announced today financial results for the third quarter of fiscal year 2022. Recent Financial & Business Highlights: · Third quarter revenue o

September 14, 2022 424B5

1,378,677 Shares of Common Stock, Warrants to Purchase up to 1,378,677 Shares of Common Stock the Shares of Common Stock underlying the Warrants

PROSPECTUS SUPPLEMENT Filed Pursuant to Rule 424(b)(5) (to Prospectus dated August 16, 2021) Registration No.

September 12, 2022 EX-4.1

Form of Warrant Issued under that Securities Purchase Agreement between the Registrant and the Purchaser identified on the signature pages thereto, dated September 12, 2022

Exhibit 4.1 COMMON STOCK PURCHASE WARRANT INTRUSION INC. Warrant Shares: [?] Initial Exercise Date: September 14, 2022 Issue Date: September 14, 2022 THIS COMMON STOCK PURCHASE WARRANT (the ?Warrant?) certifies that, for value received, [?] or its assigns (the ?Holder?) is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter set forth, at any time on o

September 12, 2022 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 12, 2022 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File

September 12, 2022 EX-10.1

Securities Purchase Agreement between the Registrant and the Purchasers identified on the signature pages thereto, dated September 12, 2022

Exhibit 10.1 SECURITIES PURCHASE AGREEMENT This Securities Purchase Agreement (this ?Agreement?) is dated as of September 12, 2022 and is between Intrusion Inc., a Delaware corporation (the ?Company?), and each purchaser identified on the signature pages hereto (each, including its successors and assigns, a ?Purchaser? and collectively the ?Purchasers?). WHEREAS, subject to the terms and condition

August 4, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2022 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-39608 INTR

August 4, 2022 EX-99.1

Intrusion, Inc. Reports Second Quarter of Fiscal 2022 Results New Intrusion Shield Product Development Remains on Track

Exhibit 99.1 Intrusion, Inc. Reports Second Quarter of Fiscal 2022 Results New Intrusion Shield Product Development Remains on Track PLANO, Texas, August 4, 2022 (GLOBE NEWSWIRE) - Intrusion Inc. (NASDAQ: INTZ), a leader in cyberattack prevention solutions, announced today financial results for the second quarter of fiscal year 2022. Recent Financial & Business Highlights: · Second quarter revenue

August 4, 2022 8-K

Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 4, 2022 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Numb

August 4, 2022 424B5

Up to $50,000,000 Common Stock

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.

June 29, 2022 8-K

Regulation FD Disclosure

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 23, 2022 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Numbe

June 27, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 27, 2022 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Numbe

June 22, 2022 8-K/A

Unregistered Sales of Equity Securities, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K/A AMENDMENT TO CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 8, 2022 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-20191 75-1911917 (State or Other Jurisdiction of Incorporation) (Commiss

June 10, 2022 8-K

Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 8, 2022 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-20191 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Number

May 27, 2022 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 24, 2022 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-20191 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Number

May 17, 2022 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 16, 2022 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-20191 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Number

May 13, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2022 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 0-20191 INTRU

May 12, 2022 EX-99.1

Intrusion, Inc. Reports First Quarter of Fiscal 2022 Results INTRUSION Shield Product Development Remains on Schedule for Second Half 2022 Deployment

Exhibit 99.1 Intrusion, Inc. Reports First Quarter of Fiscal 2022 Results INTRUSION Shield Product Development Remains on Schedule for Second Half 2022 Deployment PLANO, Texas, May 12, 2022 (GLOBE NEWSWIRE) - Intrusion Inc. (NASDAQ: INTZ), a leader in cyberattack prevention solutions, announced today financial results for the first quarter of fiscal year 2022. Recent Financial & Business Highlight

May 12, 2022 8-K

Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 12, 2022 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-20191 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Number

April 18, 2022 DEF 14A

SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Definitive Proxy Statement ? Definitive Additional Materials ? Soliciting Material Pursuant to ? 240.

April 13, 2022 8-K

Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 5, 2022 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-20191 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Numbe

April 5, 2022 PRE 14A

SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

PRE 14A 1 intrusionpre14a.htm PRELIMINARY PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☒ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy Stateme

April 1, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 28, 2022 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-20191 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Numb

March 28, 2022 424B5

Up to $10,000,000 Common Stock

PROSPECTUS SUPPLEMENT Filed Pursuant to Rule 424(b)(5) (to Prospectus dated August 16, 2021 and the Prospectus Supplement dated August 16, 2021) Registration No.

March 18, 2022 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE FISCAL YEAR ENDED DECEMBER 31, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to COMMISSION FILE NUMBER 001-396

March 18, 2022 EX-14.1

Code Of Conduct

EXHIBIT 14.1 A copy of this Code shall be available on the Company?s web site at www.intrusion.com. INTRUSION INC. CODE OF CONDUCT (as amended on March 16, 2022) For Employees, Executive Officers, and Directors Introduction The Code of Business Conduct and Ethics (the ?Code?) has been developed by Intrusion Inc. (the ?Company?) and has been adopted by the Company?s Board of Directors. It summarize

March 18, 2022 EX-4.2

Description of the Capital Stock of the Company

EXHIBIT 4.2 DESCRIPTION OF CAPITAL STOCK Registered under Section 12 of the Securities Exchange Act, as amended The following description is intended as a summary of our certificate of incorporation (which we refer to as our ?charter?) our bylaws, and to the applicable provisions of the Delaware General Corporation Law. Because the following is only a summary, it does not contain all of the inform

March 17, 2022 EX-99.1

Intrusion, Inc. Reports Fourth Quarter and Full Year 2021 Results INTRUSION Shield Continues to Gain Traction, Resulting in Gross Margin Improvement

Exhibit 99.1 Intrusion, Inc. Reports Fourth Quarter and Full Year 2021 Results INTRUSION Shield Continues to Gain Traction, Resulting in Gross Margin Improvement PLANO, Texas, March. 17, 2022 (GLOBE NEWSWIRE) - Intrusion Inc. (NASDAQ: INTZ), a leader in cyberattack prevention solutions, announced today financial results for the fourth quarter and full year ended December 31, 2021. Recent Financial

March 17, 2022 8-K

Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 17, 2022 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-20191 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Numb

March 10, 2022 EX-4.2

Form of Convertible Promissory Note #2 Issued Under the Securities Purchase Agreement dated March 10, 2022, by and between the Registrant and Streeterville Capital, LLC

Exhibit 4.2 Form of PROMISSORY NOTE #2 Effective Date: [?], 2022 U.S. $5,350,000.00 FOR VALUE RECEIVED, Intrusion Inc., a Delaware corporation (?Borrower?), promises to pay to Streeterville Capital, LLC, a Utah limited liability company, or its successors or assigns (?Lender?), $5,350,000.00 and any interest, fees, charges, and late fees accrued hereunder on the date that is eighteen (18) months a

March 10, 2022 EX-10.1

Securities Purchase Agreement dated March 10, 2022, by and Between the Registrant and Streeterville Capital, LLC

Exhibit 10.1 Securities Purchase Agreement This Securities Purchase Agreement (this ?Agreement?), dated as of March 10, 2022, is entered into by and between Intrusion Inc., a Delaware corporation (?Company?), and Streeterville Capital, LLC, a Utah limited liability company, its successors and/or assigns (?Investor?). A. Company and Investor are executing and delivering this Agreement in reliance u

March 10, 2022 8-K

Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 10, 2022 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Numb

March 10, 2022 EX-4.1

Form of Convertible Promissory Note #1 Issued Under the Securities Purchase Agreement dated March 10, 2022, by and between the Registrant and Streeterville Capital, LLC

Exhibit 4.1 Form of PROMISSORY NOTE #1 Effective Date: March 10, 2022 U.S. $5,350,000.00 FOR VALUE RECEIVED, Intrusion Inc., a Delaware corporation (?Borrower?), promises to pay to Streeterville Capital, LLC, a Utah limited liability company, or its successors or assigns (?Lender?), $5,350,000.00 and any interest, fees, charges, and late fees accrued hereunder on the date that is eighteen (18) mon

February 9, 2022 SC 13G/A

INTZ / Intrusion Inc. / Puckett Julie Paxton - SCHEDULE 13G AMENDMENT Passive Investment

SC 13G/A 1 juliepaxtonsc13ga2.htm SCHEDULE 13G AMENDMENT UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2) * Intrusion Inc. Name of Issuer) Common Stock, Par Value $0.01 (Title of Class of Securities) 46121E205 (CUSIP Number) December 31, 2021 (Date of Event which Requires Filing of this Settlement) Chec

February 9, 2022 SC 13G/A

INTZ / Intrusion Inc. / Paxton Patsy A - SCHEDULE 13G AMENDMENT Passive Investment

SC 13G/A 1 patsypaxtonsc13ga2.htm SCHEDULE 13G AMENDMENT UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2) * Intrusion Inc. Name of Issuer) Common Stock, Par Value $0.01 (Title of Class of Securities) 46121E205 (CUSIP Number) December 31, 2021 (Date of Event which Requires Filing of this Settlement) Chec

February 9, 2022 SC 13G/A

INTZ / Intrusion Inc. / Paxton Mark Alan - SCHEDULE 13G AMENDMENT Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2) * Intrusion Inc. Name of Issuer) Common Stock, Par Value $0.01 (Title of Class of Securities) 46121E205 (CUSIP Number) December 31, 2021 (Date of Event which Requires Filing of this Settlement) Check the appropriate box to designate the rule pursuant to w

January 26, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 21, 2022 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File Nu

December 9, 2021 8-K/A

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K/A CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 11, 2021 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File

November 17, 2021 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 11, 2021 INTRUSION INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-39608 75-1911917 (State or Other Jurisdiction of Incorporation) (Commission File N

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