David Lyle - 08 Dec 2025 Form 4 Insider Report for MITEK SYSTEMS INC (MITK)

Role: Chief Financial Officer
Signature: /s/ Jonathan O'Brien, by Power of Attorney
Issuer symbol: MITK
Transactions as of: 08 Dec 2025
Transactions value $: $12,028
Form type: 4
Filing time: 10 Dec 2025, 18:27:27 UTC
Previous filing: 21 Nov 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Lyle David	Chief Financial Officer	770 FIRST AVENUE, SUITE 425, SAN DIEGO	/s/ Jonathan O'Brien, by Power of Attorney	10 Dec 2025	0001416939

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MITK	Common Stock	Options Exercise	$187K	+20.5K	+10.6%	$9.14	214K	08 Dec 2025	Direct	F1
transaction	MITK	Common Stock	Tax liability	-$175K	-19.2K	-8.97%	$9.14	195K	08 Dec 2025	Direct	F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	MITK	Performance Restricted Stock Units	Options Exercise	$0	-22.1K	-10.39%	$0.00	190K	08 Dec 2025	Common Stock	22.1K		Direct	F3, F4

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Performance restricted stock units (the "Performance RSUs") convert into common stock on a one-for-one basis.
F2	Represents the disposition of shares that were withheld by the Issuer to pay withholding taxes upon the vesting of 20,479 Performance RSUs and 16,556 restricted stock units.
F3	On December 8, 2024, the reporting person was granted Performance RSUs, which vest based upon the achievement of certain performance criteria over the three year period following the date of grant (each such year, a "Performance Period"), with up to 33% of such units vesting (on each anniversary of the date of grant) with respect to each applicable Performance Period. For the December 8, 2025 vesting, approximately 93% of the target shares vested based on the achievement of the performance criteria described below, and the remaining were cancelled.
F4	The annual performance criteria for each annual Performance Period is for the % increase in value of Mitek's common stock to meet or exceed the % increase in value of the Russell 2000 Index over the applicable annual Performance Period, based on a hypothetical investment in both Mitek's common stock and the Russell 2000 Index with a purchase price equal to the average closing price of each for the 20-trading days immediately preceding the start of the applicable Performance Period. At the end of the applicable Performance Period, the value of the hypothetical investments is determined by assuming the sale of each based on the average closing price of each from the immediately preceding 20-trading days. The % change is determined by comparing the increase in value to the starting investment.