SEC Form 4 · accession 0001683168-26-006931
LANTRONIX INC · LTRX
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Mathi Gurusamy
Officer — Chief Product & Strategy Ofcr
Period of report
Sep 1, 2026
Accepted (ET)
Sep 3, 2026 · 4:13 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001114925
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common Stock | Sep 1, 2026 | M | 3,334 | $0.00 | A | 84,140 | D | |
| Common Stock | Sep 1, 2026 | M | 7,975 | $0.00 | A | 92,115 | D | |
| Common Stock | Sep 1, 2026 | M | 7,118 | $0.00 | A | 99,233 | D | |
| Common Stock | Sep 1, 2026 | F | 8,452 | $5.15 | D | 90,781 | D | |
| Common Stock | Sep 1, 2026 | M | 15,335 | $0.00 | A | 106,116 | D | |
| Common Stock | Sep 1, 2026 | F | 7,035 | $5.15 | D | 99,081 | D |
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Restricted Stock UnitsF1 | — | Sep 1, 2026 | M | 3,334 | D | — | — | Common Stock | 3,334 | 10,004 | D |
| Restricted Stock UnitsF2 | — | Sep 1, 2026 | M | 7,975 | D | — | — | Common Stock | 7,975 | 23,924 | D |
| Restricted Stock UnitsF3 | — | Sep 1, 2026 | M | 7,118 | D | — | — | Common Stock | 7,118 | 49,825 | D |
| Restricted Stock UnitsF5 | — | Sep 1, 2026 | M | 15,335 | D | — | — | Common Stock | 15,335 | 21,469 | D |
Explanation of responses
- F1Represents 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.
- F2Represents RSUs granted on June 1, 2024. The 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.
- F3Represents RSUs granted on July 11, 2025. The 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.
- F4In accordance with the terms of the RSU Agreement, 8,452 shares of Lantronix, Inc. common stock were withheld at vesting to cover required tax withholding.
- F5On July 11, 2025, the reporting person was granted RSUs with performance-based vesting requirements. The number of RSUs that were eligible to vest based on certain earnings per share targets and revenue targets for fiscal 2026 shall vest such that 15,335 shares vest on September 1, 2026 and the remaining 21,469 shares vest quarterly thereafter beginning December 1, 2026 such that one hundred percent (100%) of the RSUs will be fully vested on June 1, 2028.
- F6In accordance with the terms of the applicable RSUs with performance-based vesting requirements award agreements, 7,035 shares of Lantronix, Inc. common stock were withheld at vesting to cover required tax withholding.