Mathi Gurusamy - 01 Mar 2026 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 Mar 2026
Net transactions value: -$27,837
Form type: 4
Filing time: 03 Mar 2026, 18:58:24 UTC
Previous filing: 03 Dec 2025
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 Mar 2026	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	+5.3%	$0.000000	66,717	01 Mar 2026	Direct	F1
transaction	LTRX	Common Stock	Options Exercise	$0	+7,974	+12%	$0.000000	74,691	01 Mar 2026	Direct	F2
transaction	LTRX	Common Stock	Tax liability	$27,837	-4,655	-6.2%	$5.98	70,036	01 Mar 2026	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	-3,334	-17%	$0.000000	16,673	01 Mar 2026	Common Stock	3,334		Direct	F1
transaction	LTRX	Restricted Stock Units	Options Exercise	$0	-7,974	-17%	$0.000000	39,874	01 Mar 2026	Common Stock	7,974		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, 4,655 shares of Lantronix, Inc. common stock were withheld at vesting to cover required tax withholding.