X0609 4 2026-09-01 0 0001114925 LANTRONIX INC LTRX 0002038019 Stringham Brent Michael false C/O LANTRONIX, INC 48 DISCOVERY SUITE 250 IRVINE CA 92618 0 1 0 0 Chief Financial Officer 0 Common Stock 2026-09-01 4 M 0 551 0 A 112135 D Common Stock 2026-09-01 4 M 0 3224 0 A 115359 D Common Stock 2026-09-01 4 M 0 8571 0 A 123930 D Common Stock 2026-09-01 4 F 0 5415 5.15 D 118515 D Common Stock 2026-09-01 4 M 0 18463 0 A 136978 D Common Stock 2026-09-01 4 F 0 8101 5.15 D 128877 D Restricted Stock Units 2026-09-01 4 M 0 551 0 D Common Stock 551 0 D Restricted Stock Units 2026-09-01 4 M 0 3224 0 D Common Stock 3224 12893 D Restricted Stock Units 2026-09-01 4 M 0 8571 0 D Common Stock 8571 59995 D Restricted Stock Units 2026-09-01 4 M 0 18463 0 D Common Stock 18463 25852 D 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. 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. 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. 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. 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. 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. /s/ Brent Stringham 2026-09-03