“…Following previous research, we include control variables in terms of firm characteristics and M&A transaction indicators. We select variables of firm features that include Size, measured as natural logarithm of total assets (Hou et al , 2022); Age, measured as length of listing (Lu, 2021); Growth, measured by the growth ratio of year’s income (Bettinazzi and Zollo, 2017; Wang and Zhang, 2020); ROA, measured by return on assets (Bereskin et al , 2018; Arouri et al , 2019); Lev, measured by the asset–liability ratio (Deng et al , 2013); First, measured by the ratio of firms’ largest shareholder (Meng and Sima, 2023); Dual, categorized as 1 if the CEO also served as the chair of the board of directors, and 0 otherwise (Wang and Zhang, 2020); besides, we controlled a set of M&A transaction indicators factors (i.e. Price, Payment and Major).…”