Jefferies acts as initial purchaser and underwriter in $1 billion Rule 144A and Regulation S offering and concurrent $50 million public offering by Offshore Group Investment Limited and Vantage Drilling Company

Client(s) Jefferies & Company, Inc.

Jones Day advised Jefferies & Company, Inc. in connection with the $1 billion of 11 1/2% Senior Secured First Lien Notes due 2015 in a Rule 144A and Regulation S offering by Offshore Group Investment Limited, a Cayman Islands exempt company and subsidiary of Vantage Drilling Company, and concurrent underwritten public offering of $50 million of Ordinary Shares by Vantage Drilling Company.

Vantage Drilling Company will use the proceeds to acquire the remaining interest in Mandarin Drilling Corporation (the owner of the construction contract for the Platinum Explorer, an ultra deepwater drillship); to fund the remaining construction payments for the Platinum Explorer; to refinance certain indebtedness; and for general corporate purposes.