Brent Michael Stringham - 01 Mar 2026 Form 4 Insider Report for LANTRONIX INC (LTRX)

Role: Chief Financial Officer
Signature: /s/ Brent Stringham
Issuer symbol: LTRX
Transactions as of: 01 Mar 2026
Net transactions value: -$9,287
Form type: 4
Filing time: 03 Mar 2026, 19:05:21 UTC
Previous filing: 03 Dec 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Stringham Brent Michael	Chief Financial Officer	C/O LANTRONIX, INC, 48 DISCOVERY SUITE 250, IRVINE	/s/ Brent Stringham	03 Mar 2026	0002038019

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	LTRX	Common Stock	Options Exercise	$0	+550	+0.62%	$0.000000	88,655	01 Mar 2026	Direct	F1
transaction	LTRX	Common Stock	Options Exercise	$0	+3,223	+3.6%	$0.000000	91,878	01 Mar 2026	Direct	F2
transaction	LTRX	Common Stock	Tax liability	$9,287	-1,553	-1.7%	$5.98	90,325	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	-550	-33%	$0.000000	1,101	01 Mar 2026	Common Stock	550		Direct	F1
transaction	LTRX	Restricted Stock Units	Options Exercise	$0	-3,223	-14%	$0.000000	19,340	01 Mar 2026	Common Stock	3,223		Direct	F2

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

Explanation of Responses:

Id	Content
F1	Represents outstanding RSUs granted on October 3, 2023. The remaining unvested shares subject to the RSUs vest ratably in equal quarterly installments through September 1, 2026. Each RSU represents the right to receive one share of the issuer's common stock.
F2	Represents outstanding RSUs granted on October 1, 2024. The RSUs shall vest such that one-third (1/3) of the shares vest on September 1, 2025 and the remaining two-thirds (2/3) of the total number of shares vest quarterly thereafter beginning on December 1, 2025, such that one hundred percent (100%) of the RSUs will be fully vested on September 1, 2027. Each RSU represents the right to receive one share of the issuer's common stock.
F3	In accordance with the terms of the applicable RSU award agreements, 1,553 shares of Lantronix, Inc. common stock were withheld at vesting to cover required tax withholding.