MITK

mitk-202602050000807863FALSE00008078632026-02-052026-02-05

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 5, 2026

MITEK SYSTEMS, INC.

(Exact name of registrant as specified in its charter)

Delaware001-3523187-0418827 (State or other jurisdiction of incorporation)(Commission File Number)(IRS Employer Identification No.)

770 First Avenue, Suite 425 San Diego,California 92101 (Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code: (619) 269-6800 Not Applicable (Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instructions A.2. below): ☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act: Title of each classTrading Symbol(s)Name of each exchange on which registered Common Stock, par value $0.001 per shareMITKNASDAQ Capital Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.☐

Item 1.02 Termination of a Material Definitive Agreement. On February 1, 2026, Mitek Systems, Inc. (the “Company”) repaid in full its 0.750% Convertible Senior Notes due February 1, 2026, which included $155,250,000 million in aggregate principal plus all accrued interest and terminated all lending commitments thereunder. Item 2.02 Results of Operations and Financial Condition. On February 5, 2026, the Company issued a press release announcing the Company’s financial results for the first fiscal quarter ended December 31, 2025. A copy of the Company’s press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference. In accordance with General Instruction B.2 of Form 8-K, the information in Item 2.02 of this Current Report on Form 8-K, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liability of that section, and shall not be incorporated by reference into any registration statement or other document filed under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing. Item 5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. On February 5, 2026, the Company appointed Eric Bell as the Company’s Chief Accounting Officer, effective immediately. In this position, Mr. Bell will serve as the Company's principal accounting officer. Mr. Bell has over 25 years of experience, having served as the Company's Vice President, Global Corporate Controller since December 2023. He previously served as Chief Accounting Officer at Paya Holdings Inc. (NASDAQ:PAYA), a leading provider of integrated payment and frictionless commerce solutions that help customers accept and make payments, expedite receipt of money, and increase operating efficiencies, from November 2020 to November 2023. Prior to that he held several positions, including Senior Corporate Controller at Supernus Pharmaceuticals, Inc. (NASDAQ: SUPN), a biopharmaceutical company focused on developing and commercializing products for the treatment of central nervous system diseases, from May 2012 to November 2020. Mr. Bell, age 48, holds a B.S. in Business Administration, majoring in Accounting from the University of Connecticut, and is a Certified Public Accountant. In connection with Mr. Bell's appointment, he was granted equity awards with an aggregate grant date fair value of $200,000 in the form of restricted stock units. Fifty percent (50%) of the restricted stock units are time-based restricted stock units that vest over four years in equal annual installments. Fifty percent (50%) of the restricted stock units are performance-based restricted stock units that are eligible to vest on the third an

mitk-202512110000807863FALSE00008078632025-12-112025-12-11

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 11, 2025

MITEK SYSTEMS, INC.

(Exact name of registrant as specified in its charter)

Delaware001-3523187-0418827 (State or other jurisdiction of incorporation)(Commission File Number)(IRS Employer Identification No.)

770 First Avenue, Suite 425 San Diego,California 92101 (Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code: (619) 269-6800 Not Applicable (Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instructions A.2. below): ☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act: Title of each classTrading Symbol(s)Name of each exchange on which registered Common Stock, par value $0.001 per shareMITKNASDAQ Capital Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.☐

Item 2.02 Results of Operations and Financial Condition. On December 11, 2025, Mitek Systems, Inc. (the “Company”) issued a press release announcing the Company’s financial results for the fourth fiscal quarter and fiscal year ended September 30, 2025. A copy of the Company’s press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference. In accordance with General Instruction B.2 of Form 8-K, the information in Item 2.02 of this Current Report on Form 8-K, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liability of that section, and shall not be incorporated by reference into any registration statement or other document filed under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing. Item 9.01 Financial Statements and Exhibits. (d) Exhibits. Exhibit NumberDescription 99.1Press Release issued by Mitek Systems, Inc. on December 11, 2025

104Cover Page Interactive Data File, formatting Inline Extensible Business Reporting Language (iXBRL)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

Mitek Systems, Inc.

December 11, 2025 By:/s/ Dave Lyle Dave Lyle Chief Financial Officer

mitk-202508070000807863FALSE00008078632025-08-072025-08-07

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, 2025

MITEK SYSTEMS, INC.

(Exact name of registrant as specified in its charter)

Delaware001-3523187-0418827 (State or other jurisdiction of incorporation)(Commission File Number)(IRS Employer Identification No.)

770 First Avenue, Suite 425 San Diego,California 92101 (Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code: (619) 269-6800 Not Applicable (Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instructions A.2. below): ☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act: Title of each classTrading Symbol(s)Name of each exchange on which registered Common Stock, par value $0.001 per shareMITKThe NASDAQ Capital Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.☐

Item 2.02 Results of Operations and Financial Condition. On August 7, 2025, Mitek Systems, Inc. (the “Company”) issued a press release announcing the Company’s financial results for the third fiscal quarter ended June 30, 2025. A copy of the Company’s press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference. In accordance with General Instruction B.2 of Form 8-K, the information in Item 2.02 of this Current Report on Form 8-K, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liability of that section, and shall not be incorporated by reference into any registration statement or other document filed under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing. Item 9.01 Financial Statements and Exhibits. (d) Exhibits. Exhibit NumberDescription 99.1Press Release issued by Mitek Systems, Inc. on August 7, 2025

104Cover Page Interactive Data File, formatting Inline Extensible Business Reporting Language (iXBRL)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

Mitek Systems, Inc.

August 7, 2025 By:/s/ Dave Lyle Dave Lyle Chief Financial Officer