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Lantronix Inc (LTRX) executive converts RSUs and withholds shares for taxes

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Lantronix Inc Chief Product & Strategy Officer Gurusamy Mathi converted 28,046 restricted stock units into common stock on July 11, 2026. In connection with this RSU vesting, 10,062 shares were withheld to cover tax obligations. After these transactions, he holds 90,868 common shares directly and 56,943 RSUs.

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Insider Gurusamy Mathi
Role Chief Product & Strategy Ofcr
Type Security Shares Price Value
Exercise Restricted Stock Units 28,046 $0.00 --
Exercise Common Stock 28,046 $0.00 --
Tax Withholding Common Stock 10,062 $5.60 $56K
Holdings After Transaction: Restricted Stock Units — 56,943 shares (Direct); Common Stock — 90,868 shares (Direct)
Footnotes (1)
  1. Represents restricted stock units ("RSUs") granted on July 11, 2025. The restricted stock units ("RSUs") shall vest such that one-third (1/3) of the shares vest on July 11, 2026 and the remaining two-thirds (2/3) of the total number of shares vest quarterly thereafter beginning on September 1, 2026, such that one hundred percent (100%) of the RSUs will be fully vested on June 1, 2028. In accordance with the terms of the RSU Agreement, 10,062 shares of Lantronix, Inc. common stock were withheld at vesting to cover required tax withholding.
RSUs Converted to Common Stock 28,046 shares Restricted stock units converted on July 11, 2026
Shares Withheld for Taxes 10,062 shares Common shares withheld at RSU vesting to cover tax obligations
Common Shares Held After Transactions 90,868 shares Direct Lantronix common stock holdings following July 11, 2026 transactions
RSUs Remaining After Vesting 56,943 units Restricted stock units remaining following the July 11, 2026 vesting and conversion
Tax Withholding Reference Price $5.6000 per share Price associated with 10,062-share tax-withholding disposition
RSU Exercise Price $0.0000 per unit Exercise or conversion price of restricted stock units
Restricted Stock Units financial
"Represents restricted stock units ("RSUs") granted on July 11, 2025."
Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.
RSU Agreement financial
"In accordance with the terms of the RSU Agreement, 10,062 shares..."
tax withholding financial
"shares of Lantronix, Inc. common stock were withheld at vesting to cover required tax withholding."
Tax withholding is the practice of taking a portion of a payment—such as wages, dividends, or sale proceeds—before it reaches the recipient and sending that portion to the tax authority as an advance on the recipient’s eventual tax bill. For investors it matters because withholding reduces immediate cash received and affects after‑tax returns, estimated tax payments, and whether you may owe more or receive a refund when taxes are finally calculated, like having a small automatic savings set aside for your tax bill.
derivative security financial
"transaction_code_description": "Exercise or conversion of derivative security""
A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.
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FAQ

What did Gurusamy Mathi report in this Form 4 for LTRX?

Lantronix executive Gurusamy Mathi reported the vesting and conversion of 28,046 restricted stock units into common stock, plus a related tax-withholding transaction where 10,062 shares were withheld to satisfy required tax obligations.

How many Lantronix (LTRX) shares were withheld for taxes in this filing?

The filing shows that 10,062 shares of Lantronix common stock were withheld at RSU vesting to cover required tax withholding, as provided in the RSU Agreement governing the restricted stock unit grant.

How many Lantronix (LTRX) restricted stock units did Mathi convert?

Gurusamy Mathi converted 28,046 restricted stock units into Lantronix common stock on July 11, 2026. These RSUs were part of a grant awarded on July 11, 2025 with time-based vesting through June 1, 2028.

What are Gurusamy Mathi’s holdings in LTRX after these transactions?

Following the reported transactions, Gurusamy Mathi directly holds 90,868 shares of Lantronix common stock and 56,943 restricted stock units, reflecting his remaining equity-based compensation position after the July 11, 2026 vesting event.

How do the RSUs for Lantronix (LTRX) vest for Gurusamy Mathi?

The RSUs granted on July 11, 2025 vest over time: one-third vests on July 11, 2026, and the remaining two-thirds vest quarterly starting September 1, 2026, so all RSUs are fully vested by June 1, 2028.
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Gurusamy Mathi

(Last)(First)(Middle)
C/O LANTRONIX, INC.
48 DISCOVERY SUITE 250

(Street)
IRVINE CALIFORNIA 92618

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
LANTRONIX INC [ LTRX ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
Chief Product & Strategy Ofcr
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
07/11/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock07/11/2026M(1)28,046A$090,868D
Common Stock07/11/2026F(2)10,062D$5.680,806D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Restricted Stock Units(1)07/11/2026M28,046 (1) (1)Common Stock28,046$056,943D
Explanation of Responses:
1. Represents restricted stock units ("RSUs") granted on July 11, 2025. The restricted stock units ("RSUs") shall vest such that one-third (1/3) of the shares vest on July 11, 2026 and the remaining two-thirds (2/3) of the total number of shares vest quarterly thereafter beginning on September 1, 2026, such that one hundred percent (100%) of the RSUs will be fully vested on June 1, 2028.
2. In accordance with the terms of the RSU Agreement, 10,062 shares of Lantronix, Inc. common stock were withheld at vesting to cover required tax withholding.
/s/ Brent Stringham, Attorney-in-fact for Mathi Gurusamy07/14/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)