This study investigates the relationship between Chief Financial Officer (CFO) characteristics and the extent of sustainability disclosure among companies listed on the Market for Alternative Investment (MAI). A total of 373 firms listed on the mai during 2023–2024 were examined using multiple regression analysis. The results demonstrate a significant positive association between a CFO’s educational background in accounting or finance and the level of sustainability disclosure. Firms led by CFOs with formal qualifications in accounting or finance exhibit greater sustainability reporting compared to those whose CFOs possess degrees in other fields. Additionally, profitability, corporate governance quality, and industry classification employed as control variables were also found to be significantly associated with sustainability disclosure levels. These findings highlight the influential role of CFO characteristics in shaping corporate sustainability reporting practices within the MAI context. These results contribute to firms in recruiting CFO.