我國自2004年後將自結盈餘相關規定由強制性變更為自願性揭露後，公司得選擇是否揭露自結盈餘資訊。公司治理機制中董事會為主要的核心機制，公司治理愈好可使公司愈有可能揭露較多資訊給利害關係人，因此本研究主要目的在探討董事會特性、股權結構是否會影響公司自結盈餘揭露。
本研究以2012年至2018年台灣上市上櫃公司為研究對象，以公司是否揭露自結盈餘及揭露盈餘頻率作為衡量方式，資料來源取自台灣經濟新報社資料庫及年報資訊。實證結果發現，經理人持股比率愈高，公司愈會揭露自結盈餘及揭露頻率也愈高；大股東持股比率愈高，公司愈不會揭露自結盈餘及揭露頻率也愈低；機構投資人持股比率愈高，公司愈不會揭露自結盈餘及揭露頻率愈低；獨立董事比率與公司揭露自結盈餘及揭露頻率並無顯著關係；具有會計師資格之董事越多，公司愈會揭露自結盈餘及揭露頻率愈高；忙碌董事為維護其聲譽，會善盡監督職責，則公司愈會揭露自結盈餘及揭露頻率愈高。
Since 2004, the regulations for preliminary earnings have been changed from mandatory disclosure to voluntary disclosure. The company can choose disclosure pre-liminary earnings information or not. The board of directors is the main core mecha-nism in the corporate governance. The company's corporate governance better, the more likely to disclosure more information to stakeholders. Therefor, the main pur-pose of this study is to examine whether the board characteristics and ownership structure will affect the frequency of company earnings disclosure.
We using the Taiwan Listed Companies since 2012 to 2018. We collected the data from Taiwan Economic Journal (TEJ) and the annual reporting. The empirical results found that the manager holding ratio is higher, the preliminary earnings disclosure and the frequency of company's preliminary earnings disclosure is higher; the shareholding ratio is higher, the preliminary earnings disclosure and the frequency of company's preliminary earnings disclosure is higher; the manager holding ratio is higher, the pre-liminary earnings disclosure and the frequency of company's preliminary earnings disclosure is higher; the institutional investor shareholding ratio is higher, the prelim-inary earnings disclosure and the frequency of company's preliminary earnings dis-closure is higher; the independent director ratio has no significant relationship with preliminary earnings disclosure and the frequency of company's preliminary earnings disclosure; the directors have more auditor qualifications, the preliminary earnings disclosure and the frequency of preliminary earnings is higher；in order to maintain its reputation, the busy directors will perform their supervisory duties, the preliminary earnings disclosure and the frequency of preliminary earnings is higher.
