International Stem Cell Corporation and Dr. Andrey Semechkin agreed to extend (until September 15, 2024) the maturity date of the loan (in the principal amount of $2,900,000) from Dr. Semechkin to the Company that had been reflected in a promissory note dated March 15, 2023 (the ?Original Note?), and which would have been due on September 15, 2023. In exchange for the Original Note, the Company issued to Dr. Semechkin an unsecured, non-convertible promissory note in the principal amount of $2,900,000 (the ?Note?) with the extended maturity date. Dr. Semechkin is the Company?s Co-Chairman and Chief Executive Officer.