Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing. On November 4, 2026, Intrusion Inc. (the “Company”) received formal written notification from the Listing Qualifications Department of The Nasdaq Stock Market LLC (“Nasdaq”) stating that the Company has been granted an additional 180 calendar days, or until May 3, 2027, to regain compliance with the minimum $1.00 per share bid price requirement for continued listing on The Nasdaq Capital Marke…

Unregistered Sales of Equity Securities. The information set forth in

Entry into a Material Definitive Agreement. Exchange Agreement with Streeterville Capital, LLC On October 29, 2026, Intrusion Inc. (the “Company”), entered into an Exchange Agreement (the “Exchange Agreement”) with Streeterville Capital, LLC (“Streeterville”). Pursuant to the Exchange Agreement, the Company and Streeterville agreed to (i) partition a new secured promissory note in the original principal amount of $3,250,000.00 (the “Note #1 Partitioned Note”) from that certain Secured Promiss…

CEO — Anthony Scott: The CEO is not departing immediately but is entering a negotiation period for a new contract after the current one expires, continuing to serve in his role.

by reference. The offering of shares of the Company’s common stock issued upon the exercise of such Warrants and underlying the New Warrants was undertaken pursuant to the exemption from registration provided in Section 4(a)(2) of the Securities Act of 1933, as amended (the “Securities Act”), and/or Rule 506(b) under Regulation D promulgated thereunder.

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The information set forth under

below) and to provide additional working capital for general corporate purposes. The Note bears interest at 7% per annum, compounded daily, matures 24 months after issuance on August 28, 2028, and includes a monitoring fee provision after 90 days (which automatically increases the Outstanding Balance by approximately 17.65%). The Note is secured by a first-priority security interest in all of the Company's assets and intellectual property pursuant to a Security Agreement and an Intellectual P…

Entry into a Material Definitive Agreement. On August 28, 2026, Intrusion Inc. (the “Company”) entered into a Note Purchase Agreement (the “Purchase Agreement”) with Streeterville Capital, LLC (the “Investor”). Pursuant to the Purchase Agreement, the Company issued and sold to the Investor a Secured Promissory Note (the “Note”) in the original principal amount of $1,615,000 for cash proceeds of $1,500,000 (reflecting an original issue discount of $105,000 and $10,000 in transaction expenses).…

Entry into a Material Definitive Agreement. Warrant Inducement Program On August 14, 2026, the Board of Directors (the “Board”) of Intrusion Inc., a Delaware corporation (the “Company”), pursuant to a Unanimous Written Consent under Section 141(f) of the Delaware General Corporation Law, approved a warrant inducement program (the “Warrant Inducement Program”) and the form of warrant inducement letter (the “Inducement Letter”) to be offered to holders of certain existing common stock purchase…

by reference. The offer and issuance of the New Warrants and the shares of Common Stock underlying the New Warrants are being made in reliance upon the exemption from registration provided by Section 4(a)(2) of the Securities Act of 1933, as amended (the “Securities Act”), and/or Rule 506 of Regulation D promulgated thereunder, as transactions by an issuer not involving a public offering. Each participating holder will represent that it is an “accredited investor” as defined in Rule 501(a) of…

by reference. At the First Closing, the Company issued 2,223,549 shares of Common Stock to the Buyer. Such shares were issued in reliance upon the exemption from registration provided by Section 4(a)(2) of the Securities Act of 1933, as amended (the “Securities Act”), and/or Rule 506 of Regulation D promulgated thereunder. The Seller has represented that it is an “accredited investor” acquiring the shares for investment purposes for its own account and not with a view toward public distributi…

Entry into a Material Definitive Agreement. On June 29, 2026, Intrusion Inc. (the “Company”) entered into a Membership Interest Purchase Agreement (the “Agreement”) by and among the Company, OW Cyber LLC (“Target”), and VigilAigent Corp. (“Seller”), the sole member of Target. Pursuant to the Agreement, the Company agreed to acquire 100% of the membership interests of Target from Seller over two distinct closings. Pursuant to the terms of the Agreement, the acquisition will be effectuated in t…

Results of Operations and Financial Condition. On May 14, 2026, Intrusion, Inc. (the “Company”) issued a press release providing information about its operating and financial results for the quarter ended March 31, 2026. A copy of the press release is furnished with this Current Report on Form 8-K as Exhibit 99.1. The information included in this Item 2.02, including Exhibit 99.1, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (…

Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing. On May 7, 2026, the Company received a written notice from The Nasdaq Stock Market LLC (“NASDAQ”) notifying the Company that the closing bid price of the Company’s common shares (the “Common Shares”) over the 30 consecutive trading days from March 25, 2026, through May 6, 2026, had fallen below $1.00 per share, which is the minimum closing bid price required to maintain listing on the NASDAQ C…

Entry into a Material Definitive Agreement. On April 6, 2026, Intrusion Inc. (the “Company”) entered into a Note Purchase Agreement (the “Purchase Agreement”) with Streeterville Capital, LLC (the “Investor”). Pursuant to the Purchase Agreement, the Company issued and sold to the Investor a Secured Promissory Note (the “Note”) in the original principal amount of $3,230,000 for cash proceeds of $3,000,000 (reflecting an original issue discount of $210,000 and $20,000 in transaction expenses). T…

RESULTS OF OPERATIONS AND FINANCIAL CONDITION The following information is furnished pursuant to Item 2.02, Disclosure of Results of Operations and Financial Condition. On March 24, 2026, Intrusion Inc. issued a press release announcing its financial results for the fiscal year ended December 31, 2025. A copy of the press release is attached as Exhibit 99.1 hereto and incorporated herein by reference.

RESULTS OF OPERATIONS AND FINANCIAL CONDITION The following information is furnished pursuant to Item 2.02, Disclosure of Results of Operations and Financial Condition. On November 11, 2025, Intrusion Inc. issued a press release announcing its financial results for the quarter ending September 30, 2025. A copy of the press release is attached as Exhibit 99.1 hereto and incorporated herein by reference.

Results of Operations and Financial Condition. The following information is furnished pursuant to Item 2.02, Disclosure of Results of Operations and Financial Condition. On August 12, 2025, Intrusion Inc. issued a press release announcing its financial results for the quarter ending June 30, 2025. A copy of the press release is attached as Exhibit 99.1 hereto and incorporated herein by reference.

Entry into a Material Definitive Agreement. On June 12, 2025, Intrusion, Inc. (the “Company”) entered into the At The Market Offering Agreement (the “Agreement”) by and between the Company and H.C. Wainwright & Co., LLC (the “Manager”), as sales agent. Pursuant to the prospectus supplement and accompanying base prospectus relating to the offering of the Shares (as defined herein), and under terms of the Agreement and the prospectus supplement and the accompanying base prospectus, filed on Jun…

Termination of Material Definitive Agreement. On June 6, 2025, Intrusion, Inc. (the “Company”) delivered written notice to B. Riley Securities, Inc. (“B. Riley”) that the Company was terminating the At Market Sales Agreement, dated August 5, 2021, by and between the Company and B. Riley (the “Sales Agreement”), in accordance with its terms, which termination will be effective on June 11, 2025. A description of the Sales Agreement is included in the Company’s Current Report on Form 8-K filed o…

Other Events. Pursuant to the Sales Agreement, the Company filed a prospectus supplement (the “ATM Prospectus Supplement”) to the registration statement on Form S-3 (File No. 333-281565) on January 31, 2025 and effective on February 10, 2025 pursuant to which it may offer and sell, from time to time, shares of its common stock having an aggregate offering price of up to $50,000,000 through B. Riley as the sales agent (the “ATM Offering”). As of the date of this Current Report on Form 8-K, the…

Results of Operations and Financial Condition. On April 29, 2025, Intrusion Inc. (the “Company”) issued a press release announcing its financial results for the three months ended March 31, 2025. A copy of this press release is attached hereto as Exhibit 99.1 and incorporated herein by reference. The information contained in the website is not a part of this current report on Form 8-K. In accordance with General Instruction B.2 of Form 8-K, the information included in this Item 2.02, includin…

Unregistered Sales of Equity Securities. Pursuant to a privately-negotiated agreement dated March 17, 2025, the Company agreed to exchange $236,642.64 aggregate principal amount of that certain Promissory Note #1, dated March 10, 2022, in the original principal amount of $5,350,000.00, by and between Streeterville Capital, LLC, a Utah limited liability company, and the Company (the “Note”) for an aggregate of 228,551 shares of its common stock (the “Exchange”). The issuance of such shares is…

Entry into a Material Definitive Agreement. On July 3, 2024, Intrusion Inc. (the “Company”) entered into a Standby Equity Purchase Agreement (the “SEPA”) with Streeterville Capital, LLC (“Streeterville”), which was approved by shareholders at the annual meeting on August 27, 2024. Pursuant to the SEPA, the Company has the right, but not the obligation, to sell to Streeterville up to $10 million of shares of common stock, par value $0.01 per share (“Advance Shares”), at the Company’s request a…

Unregistered Sales of Equity Securities. Pursuant to a privately-negotiated agreement dated March 13, 2025, the Company agreed to exchange $150,000 aggregate principal amount of that certain Promissory Note #1, dated March 10, 2022, in the original principal amount of $5,350,000.00, by and between Streeterville Capital, LLC, a Utah limited liability company, and the Company for an aggregate of 153,295 shares of its common stock. The issuance of such shares is pursuant to the exemption from th…