Voluntary disclosure of human capital information, particularly regarding performance management and employee engagement, enhances organizational transparency and influences individual investors' decisions in the stock market. This study examines the impact of human capital disclosure on individual investors' trading intentions (buying, holding, and selling stocks). The research is applied in purpose and descriptive-survey in nature. The statistical population consisted of individual investors in the Tehran Stock Exchange. Data were collected from 269 participants using snowball sampling through a four-part questionnaire (demographics, human capital disclosure, trading intentions, and private/public consultation sources). Data analysis was conducted using structural equation modeling and hierarchical logistic regression. Human capital disclosure (performance management and employee engagement) significantly affects intentions to buy, hold, and sell stocks. Performance management strengthens the disposition effect bias, increasing the tendency to hold stocks due to optimism about future value growth. Employee engagement, via the reverse disposition effect, encourages early selling of profitable stocks. Private and public consultations moderate the relationship between human capital disclosure and trading decisions; private consultation promotes stock retention, while public consultation encourages selling. Voluntary disclosure of human capital information, especially in performance management, reinforces the disposition effect bias in holding stocks but lacks strong evidence of impacting overconfidence biases or reverse disposition effects in stock transactions. This highlights the role of human capital disclosure in reducing price volatility and encouraging stock retention during downturns.