An independent oil and gas exploration and production company headquartered in London and have been listed on AIM since November 2004.
https://www.google.com/finance/company_news?q=LON:AST&ei=W4d-WLmxIYSf2Ab59ZmgCw&start=10&num=10
https://www.google.com/finance/company_news?q=LON:AST&ei=W4d-WLmxIYSf2Ab59ZmgCw&start=10&num=10