Form 4 for LTRX LANTRONIX INC
Accepted 2026-09-03 16:14:11 ET · period of report 2026-09-01 · accession 0001683168-26-006933 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DM | 2026-09-03 16:14 | 2026-09-01 | LTRX | Stringham Brent Michael | CFO | M - OptEx | $0.00 | +30.8K | 137.0K | +29% | $0 |
| DM | 2026-09-03 16:14 | 2026-09-01 | LTRX | Stringham Brent Michael | CFO | F - Tax | $5.15 | -13.5K | 128.9K | -9% | -$69.6K |
| DM | 2026-09-03 16:14 | 2026-09-01 | LTRX | Stringham Brent Michael | CFO | M - OptEx | $0.00 | -30.8K | 25.9K | -54% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2026-09-01 | M | A | 551 | $0.00 | 112,135 | D | — | — | (F1) Represents 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. |
| 2 | Common | Common Stock | 2026-09-01 | M | A | 3,224 | $0.00 | 115,359 | D | — | — | (F2) 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 | Common | Common Stock | 2026-09-01 | M | A | 8,571 | $0.00 | 123,930 | D | — | — | (F3) Represents 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. |
| 4 | Common | Common Stock | 2026-09-01 | F | D | 5,415 | $5.15 | 118,515 | D | — | — | (F4) In 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. |
| 5 | Common | Common Stock | 2026-09-01 | M | A | 18,463 | $0.00 | 136,978 | D | — | — | (F5) On 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. |
| 6 | Common | Common Stock | 2026-09-01 | F | D | 8,101 | $5.15 | 128,877 | D | — | — | (F6) In 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. |
| 7 | Derivative | Restricted Stock Units | 2026-09-01 | M | D | 551 | $0.00 | 0 | D | — · — to — | 551 Common Stock | (F1) Represents 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. (F1) Represents 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. (F1) Represents 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. |
| 8 | Derivative | Restricted Stock Units | 2026-09-01 | M | D | 3,224 | $0.00 | 12,893 | D | — · — to — | 3,224 Common Stock | (F2) 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. (F2) 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. (F2) 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. |
| 9 | Derivative | Restricted Stock Units | 2026-09-01 | M | D | 8,571 | $0.00 | 59,995 | D | — · — to — | 8,571 Common Stock | (F3) Represents 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. (F3) Represents 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. (F3) Represents 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. |
| 10 | Derivative | Restricted Stock Units | 2026-09-01 | M | D | 18,463 | $0.00 | 25,852 | D | — · — to — | 18,463 Common Stock | (F5) On 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. (F5) On 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. (F5) On 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. |