As of December 31, 2024, total unrecognized stock-based compensation cost was approximately $0.4 million which is expected to be recognized on a straight-line basis over a weighted average period of 0.9 years. The intrinsic value of stock options exercised during the year was $41 thousand. In September 2022, in accordance with the 2017 Plan, the Company awarded 7,533,334 stock options, of which 210,107 stock options were awarded to recently hired employees and 7,323,227 stock options were awarded to other employees, at an exercise price of $3.00 per share. All of these options are subject to time-based and performance conditioned vesting requirements. The performance condition for both sets of options assumes that a reverse recapitalization (*Liquidity Event') is consummated prior to the time service with the Company terminates. No options vest if the performance condition is not met. As of December 31, 2022, the Company concluded that the that it cannot conclude if any of the stock options will vest. Therefore, the Company concluded that it is not probable that the performance condition will be met, and as of December 31, 2022, the Company has not recognized any expense related to the granting of these options. On June 21, 2023, the reverse capitalization merger transaction (the Liquidity Event performance condition) was terminated by the other party to the transaction. As a result, per the terms of the option agreement the performance conditioned options terminated. https://www.sec.gov/Archives/edgar/data/1637147/000110465926013500/zspc-20250930xs1.htm