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The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":453381,"source":{"system":"sec-edgar","filing":"0001683168-26-007037","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1733464/000168316826007037/ownership.xml","form_type":"4"}},{"id":2174,"issuer":{"id":1667,"kind":"organization","name":"LANTRONIX INC","symbol":"LTRX"},"owners":[{"id":1677,"kind":"person","name":"Stringham Brent Michael","position":1,"cik":"0002038019","reported_name":"Stringham Brent Michael","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Restricted Stock Units","published_at":"2026-09-03T20:14:11.000Z","date":"2026-09-01","kind":"exercise","planned":false,"acquired":false,"shares":18463,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F5","text":"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."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"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."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"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."}],"balance_after":25852,"derivative":{"underlying":"Common Stock","underlying_shares":18463},"source":{"system":"sec-edgar","filing":"0001683168-26-006933","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/2038019/000168316826006933/ownership.xml","form_type":"4"}},{"id":2173,"issuer":{"id":1667,"kind":"organization","name":"LANTRONIX INC","symbol":"LTRX"},"owners":[{"id":1677,"kind":"person","name":"Stringham Brent Michael","position":1,"cik":"0002038019","reported_name":"Stringham Brent Michael","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Restricted Stock Units","published_at":"2026-09-03T20:14:11.000Z","date":"2026-09-01","kind":"exercise","planned":false,"acquired":false,"shares":8571,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Represents RSUs granted on July 11, 2025. 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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."}],"balance_after":59995,"derivative":{"underlying":"Common Stock","underlying_shares":8571},"source":{"system":"sec-edgar","filing":"0001683168-26-006933","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/2038019/000168316826006933/ownership.xml","form_type":"4"}},{"id":2172,"issuer":{"id":1667,"kind":"organization","name":"LANTRONIX INC","symbol":"LTRX"},"owners":[{"id":1677,"kind":"person","name":"Stringham Brent Michael","position":1,"cik":"0002038019","reported_name":"Stringham Brent Michael","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Restricted Stock Units","published_at":"2026-09-03T20:14:11.000Z","date":"2026-09-01","kind":"exercise","planned":false,"acquired":false,"shares":3224,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Represents outstanding RSUs granted on October 1, 2024. 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Each RSU represents the right to receive one share of the issuer's common stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"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. 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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."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"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 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."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"On July 11, 2025, the reporting person was granted RSUs with performance-based vesting requirements. 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