Kosmos Aims for Bigger IPO

Kosmos Energy, a portfolio company of Warburg Pincus and The Blackstone Group, has increased the proposed size of its IPO to $621 million. The oil and gas exploration and production company originally filed in January for a $500 million IPO and expects to list on the NYSE under the symbol KOS. Citigroup, Barclays Capital and Credit Suisse are leading the underwriting for the offering.