The issue, which opened on March 20, attracted a large number of domestic as well as foreign investors, the company said in a statement.
"The funds will be deployed for expansion of our existing businesses," company chairman V Vaidyanathan said.
The issue closed today at Rs 390 per equity share with a face value of Rs 10 at a premium of Rs 380 per share over the face value.
Around 49.7 per cent of the issue was subscribed by the domestic institutional investors and 50.3 per cent by foreign institutional investors.
"With this equity capital raise of Rs 300 crore, at this stage we feel adequately capitalised for at least next two years," Vaidyanathan said.
After this fund raising exercise the company's capital adequacy stands at 23.5 per cent.