Mathi Gurusamy - 01 Jun 2026 Form 4 Insider Report for LANTRONIX INC (LTRX)

Reporting relationship: Chief Product & Strategy Ofcr
Issuer ticker: LTRX
Reported as of: 01 Jun 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 02 Jun 2026, 16:34:30 UTC
Prior SEC filing: 13 Mar 2026
Next SEC filing: 14 Jul 2026
Source filing: View source filing
Reporting owner signature: /s/ Brent Stringham, Attorney-in-fact for Mathi Gurusamy

Key filing fact

Mathi Gurusamy filed Form 4 for LANTRONIX INC (LTRX) on 02 Jun 2026.

Key facts

This page summarizes Mathi Gurusamy's Form 4 filing for LANTRONIX INC (LTRX).
5 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 02 Jun 2026, 16:34.

Change

Previous filing in this sequence was filed on 13 Mar 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002021595 Primary reporting owner

Gurusamy Mathi

Relationship: Chief Product & Strategy Ofcr
Address: C/O LANTRONIX, INC., 48 DISCOVERY SUITE 250, IRVINE
Signature: /s/ Brent Stringham, Attorney-in-fact for Mathi Gurusamy
Signature date: 02 Jun 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

LTRX transaction

Common Stock

Options Exercise

Transaction value
Shares: +3,335
Change %: +6%
Price: $0.000000^*
Shares after: 58,904
Date: 01 Jun 2026
Ownership: Direct
Footnotes: F1

LTRX transaction

Common Stock

Options Exercise

Transaction value
Shares: +7,975
Change %: +14%
Price: $0.000000^*
Shares after: 66,879
Date: 01 Jun 2026
Ownership: Direct
Footnotes: F2

LTRX transaction

Common Stock

Tax liability

Transaction value
Shares: -4,057
Change %: -6.1%
Price: $7.58^*
Shares after: 62,822
Date: 01 Jun 2026
Ownership: Direct
Footnotes: F3

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

LTRX transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -3,335
Change %: -20%
Price: $0.000000^*
Shares after: 13,338
Date: 01 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 3,335
Exercise price
Footnotes: F1

LTRX transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -7,975
Change %: -20%
Price: $0.000000^*
Shares after: 31,899
Date: 01 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 7,975
Exercise price
Footnotes: F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote 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.

Footnote 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.

Footnote F3

In accordance with the terms of the RSU Agreement, 4,057 shares of Lantronix, Inc. common stock were withheld at vesting to cover required tax withholding.