SEC Form 4 · accession 0001683168-26-006933
LANTRONIX INC · LTRX
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Brent Michael Stringham
Officer — Chief Financial Officer
Period of report
Sep 1, 2026
Accepted (ET)
Sep 3, 2026 · 4:14 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 | 551 | $0.00 | A | 112,135 | D | |
| Common Stock | Sep 1, 2026 | M | 3,224 | $0.00 | A | 115,359 | D | |
| Common Stock | Sep 1, 2026 | M | 8,571 | $0.00 | A | 123,930 | D | |
| Common Stock | Sep 1, 2026 | F | 5,415 | $5.15 | D | 118,515 | D | |
| Common Stock | Sep 1, 2026 | M | 18,463 | $0.00 | A | 136,978 | D | |
| Common Stock | Sep 1, 2026 | F | 8,101 | $5.15 | D | 128,877 | 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 | 551 | D | — | — | Common Stock | 551 | 0 | D |
| Restricted Stock UnitsF2 | — | Sep 1, 2026 | M | 3,224 | D | — | — | Common Stock | 3,224 | 12,893 | D |
| Restricted Stock UnitsF3 | — | Sep 1, 2026 | M | 8,571 | D | — | — | Common Stock | 8,571 | 59,995 | D |
| Restricted Stock UnitsF5 | — | Sep 1, 2026 | M | 18,463 | D | — | — | Common Stock | 18,463 | 25,852 | D |
Explanation of responses
- F1Represents outstanding restricted stock units ("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.
- F2Represents 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.
- 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 applicable RSU award agreements, 5,415 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 18,463 shares vest on September 1, 2026 and the remaining 25,852 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, 8,101 shares of Lantronix, Inc. common stock were withheld at vesting to cover required tax withholding.