Brent Stringham - 01 Sep 2025 Form 4 Insider Report for LANTRONIX INC (LTRX)

Role: Chief Financial Officer
Signature: /s/ Brent Stringham
Issuer symbol: LTRX
Transactions as of: 01 Sep 2025
Net transactions value: -$26,296
Form type: 4
Filing time: 03 Sep 2025, 20:16:49 UTC
Previous filing: 15 Jul 2025
Next 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 Sep 2025	0002038019

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	LTRX	Common Stock	Options Exercise	$0	+313	+0.41%	$0.000000	76,248	01 Sep 2025	Direct	F1
transaction	LTRX	Common Stock	Options Exercise	$0	+375	+0.49%	$0.000000	76,623	01 Sep 2025	Direct	F2
transaction	LTRX	Common Stock	Options Exercise	$0	+667	+0.87%	$0.000000	77,290	01 Sep 2025	Direct	F3
transaction	LTRX	Common Stock	Options Exercise	$0	+550	+0.71%	$0.000000	77,840	01 Sep 2025	Direct	F4
transaction	LTRX	Common Stock	Options Exercise	$0	+12,891	+17%	$0.000000	90,731	01 Sep 2025	Direct	F5
transaction	LTRX	Common Stock	Tax liability	$26,296	-5,291	-5.8%	$4.97	85,440	01 Sep 2025	Direct	F6

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	-313	-100%	$0.000000	0	01 Sep 2025	Common Stock	313		Direct	F1
transaction	LTRX	Restricted Stock Units	Options Exercise	$0	-375	-50%	$0.000000	375	01 Sep 2025	Common Stock	375		Direct	F2
transaction	LTRX	Restricted Stock Units	Options Exercise	$0	-667	-100%	$0.000000	0	01 Sep 2025	Common Stock	667		Direct	F3
transaction	LTRX	Restricted Stock Units	Options Exercise	$0	-550	-20%	$0.000000	2,201	01 Sep 2025	Common Stock	550		Direct	F4
transaction	LTRX	Restricted Stock Units	Options Exercise	$0	-12,891	-33%	$0.000000	25,786	01 Sep 2025	Common Stock	12,891		Direct	F5

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

Explanation of Responses:

Id	Content
F1	Represents outstanding restricted stock units ("RSUs") granted on September 13, 2021. The remaining unvested shares subject to the RSUs vest ratably in equal quarterly installments through September 1, 2025. Each RSU represents the right to receive one share of the issuer's common stock.
F2	Represents outstanding RSUs granted on January 2, 2022. The remaining unvested shares subject to the RSUs vest ratably in equal quarterly installments through December 1, 2025. Each RSU represents the right to receive one share of the issuer's common stock.
F3	Represents outstanding RSUs granted on September 1, 2022. The remaining unvested shares subject to the RSUs vest ratably in equal quarterly installments through September 1, 2025. Each RSU represents the right to receive one share of the issuer's common stock.
F4	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.
F5	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.
F6	In accordance with the terms of the applicable RSU award agreements, 5,291 shares of Lantronix, Inc. common stock were withheld at vesting to cover required tax withholding.