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Lantronix (LTRX) CFO converts RSUs to stock as 1,553 shares withheld

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

Rhea-AI Filing Summary

Lantronix Inc. Chief Financial Officer Brent Michael Stringham reported equity award activity involving restricted stock units (RSUs) and related common stock. On March 1, 2026, he exercised or converted 550 and 3,223 RSUs into the issuer’s common stock at a stated price of $0.00 per share.

Following these conversions, his directly held common stock increased, with one transaction showing 88,655 shares and another 91,878 shares owned after the respective acquisitions. A separate transaction disposed of 1,553 shares of common stock at $5.98 per share to satisfy required tax withholding at vesting, as described in a footnote. Other footnotes explain that the RSUs were granted in October 2023 and October 2024 and vest in scheduled quarterly installments through September 1, 2026 and September 1, 2027, with each RSU representing one share of common stock.

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Insider Stringham Brent Michael
Role Chief Financial Officer
Type Security Shares Price Value
Exercise Restricted Stock Units 550 $0.00 --
Exercise Restricted Stock Units 3,223 $0.00 --
Exercise Common Stock 550 $0.00 --
Exercise Common Stock 3,223 $0.00 --
Tax Withholding Common Stock 1,553 $5.98 $9K
Holdings After Transaction: Restricted Stock Units — 1,101 shares (Direct); Common Stock — 88,655 shares (Direct)
Footnotes (1)
  1. 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. 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. 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.
Form 4 Insider Transactions: What Each Field Means →
SEC Form 4
FORM 4 UNITED 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*
Stringham Brent Michael
(Last) (First) (Middle)
C/O LANTRONIX, INC
48 DISCOVERY SUITE 250
(Street)
IRVINE CA 92618
(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
LANTRONIX INC [ LTRX ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
Chief Financial Officer
3. Date of Earliest Transaction (Month/Day/Year)
03/01/2026
4. If Amendment, Date of Original Filed (Month/Day/Year)
 6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
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)
Code V Amount (A) or (D) Price
Common Stock 03/01/2026 M(1) 550 A $0 88,655 D
Common Stock 03/01/2026 M(2) 3,223 A $0 91,878 D
Common Stock 03/01/2026 F(3) 1,553 D $5.98 90,325 D
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)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Restricted Stock Units (1) 03/01/2026 M 550 (1) (1) Common Stock 550 $0 1,101 D
Restricted Stock Units (2) 03/01/2026 M 3,223 (2) (2) Common Stock 3,223 $0 19,340 D
Explanation of Responses:
1. 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.
2. 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.
3. 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.
/s/ Brent Stringham 03/03/2026
** Signature of Reporting Person Date
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.

Source: View Original Filing on SEC EDGAR

FAQ

What insider transactions did Lantronix (LTRX) report for its CFO?

Lantronix reported its CFO exercising RSUs into common stock and a tax-related share withholding. Brent Michael Stringham converted multiple restricted stock unit awards into common shares and had 1,553 shares withheld to cover required tax obligations tied to the vesting event.

How many Lantronix (LTRX) RSUs did the CFO convert on March 1, 2026?

The CFO converted 550 and 3,223 restricted stock units on March 1, 2026. These RSU exercises were recorded at a stated price of $0.00 per share, with each RSU representing the right to receive one share of Lantronix common stock upon vesting.

What explains the 1,553 Lantronix (LTRX) shares disposed of by the CFO?

The 1,553 shares were withheld to cover required tax withholding at vesting. A footnote clarifies that Lantronix common stock was withheld in accordance with the applicable RSU award agreements, characterizing this as a tax-withholding disposition rather than an open-market sale.

What are the vesting schedules for the Lantronix (LTRX) RSUs held by the CFO?

One RSU grant vests quarterly through September 1, 2026; another completes by September 1, 2027. The October 2023 grant vests in equal quarterly installments, while the October 2024 grant vests one-third on September 1, 2025 and the remaining two-thirds quarterly thereafter.

How many Lantronix (LTRX) common shares did the CFO hold after these transactions?

The filing shows post-transaction holdings of 88,655 and 91,878 common shares in two entries. These figures reflect direct ownership following the RSU conversions and the separate tax-withholding share disposition recorded on March 1, 2026.

Are the Lantronix (LTRX) CFO’s recent transactions open-market buys or sells?

The transactions are RSU exercises and tax withholding, not open-market trades. The RSU-related entries use code “M” for derivative exercise or conversion, while the disposition uses code “F” for shares withheld to satisfy tax liabilities at vesting.