Mathi Gurusamy - 01 Dec 2025 Form 4 Insider Report for LANTRONIX INC (LTRX)

Role: Chief Product & Strategy Ofcr
Signature: /s/ Brent Stringham, Attorney-in-fact for Mathi Gurusamy
Issuer symbol: LTRX
Transactions as of: 01 Dec 2025
Net transactions value: -$21,074
Form type: 4
Filing time: 03 Dec 2025, 21:00:39 UTC
Previous filing: 03 Sep 2025
Next filing: 03 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Gurusamy Mathi	Chief Product & Strategy Ofcr	C/O LANTRONIX, INC., 48 DISCOVERY SUITE 250, IRVINE	/s/ Brent Stringham, Attorney-in-fact for Mathi Gurusamy	03 Dec 2025	0002021595

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	LTRX	Common Stock	Options Exercise	$0	+3,334	+5.9%	$0.000000	59,453	01 Dec 2025	Direct	F1
transaction	LTRX	Common Stock	Options Exercise	$0	+7,975	+13%	$0.000000	67,428	01 Dec 2025	Direct	F2
transaction	LTRX	Common Stock	Tax liability	$21,074	-4,045	-6%	$5.21	63,383	01 Dec 2025	Direct	F3

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	LTRX	Restricted Stock Units	Options Exercise	$0	-3,335	-14%	$0.000000	20,007	01 Dec 2025	Common Stock	3,335		Direct	F1
transaction	LTRX	Restricted Stock Units	Options Exercise	$0	-7,975	-14%	$0.000000	47,848	01 Dec 2025	Common Stock	7,975		Direct	F2

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

Explanation of Responses:

Id	Content
F1	Represents restricted stock units ("RSUs") granted on July 1, 2024. The restricted stock units ("RSUs") shall vest such that one-third (1/3) of the shares vest on July 1, 2025 and the remaining two-thirds (2/3) of the total number of shares vest quarterly thereafter beginning on September 1, 2025, such that one hundred percent (100%) of the RSUs will be fully vested on June 1, 2027.
F2	Represents restricted stock units ("RSUs") granted on June 1, 2024. The restricted stock units ("RSUs") shall vest such that one-third (1/3) of the shares vest on June 1, 2025 and the remaining two-thirds (2/3) of the total number of shares vest quarterly thereafter beginning on September 1, 2025, such that one hundred percent (100%) of the RSUs will be fully vested on June 1, 2027.
F3	In accordance with the terms of the RSU Agreement, 4,045 shares of Lantronix, Inc. common stock were withheld at vesting to cover required tax withholding.