Abstract: The market price of a security is its price on the Stock Exchange’s trading market. The speed with which the market reacts to new knowledge about the company is a measure of the efficiency of its pricing process. This process is likely to be enhanced if market participants have unimpeded and costless access to all relevant information about the company’s prospects and if high transaction costs do not constitute barriers to trading on the stock exchange. Here, the researcher has tried to find the influence of dividend announcement and interim finance statement on share price of the listed companies. There are 294 listed companies in the Colombo Stock Exchange as at 31st May 2015. There are 26 financial companies and it includes 15 foreign Banks and 11 Local Banks. Through them, here researcher has selected five local commercial banks as the sample for this study. Secondary data which have gained from annual reports and interim financial statements have been used to this study. In the case of analyzing the data Pearson’s correlation analysis and regression analysis have been used. Researcher has found that there is a significant relationship between interim financial statements and share price and there is no significant relationship between dividend announcements and share price. And also, finally researcher has given valuable implication to further researchers.