Exhibit 99.1

This Statement on Form 4 is filed jointly by the Reporting Persons listed below. The principal business address of each of these Reporting Persons is 333 South Grand Avenue, 28th Fl., Los Angeles, CA 90071.

Name of Designated Filer: OCM Crimson Holdings, LLC

Date of Event Requiring Statement: October 1, 2013

Issuer Name and Ticker or Trading Symbol: CXPO

	OCM CRIMSON HOLDINGS, LLC

	By:	OCM Principal Opportunities Fund IV, L.P.
	Its:	Managing Member

	By:	OCM Principal Opportunities Fund IV GP, L.P.
	Its:	General Partner

	By:	OCM Principal Opportunities Fund IV GP Ltd.
	Its:	General Partner

	By:	Oaktree Capital Management, L.P.
	Its:	Director


	By:	/s/ Todd Molz
	Name:	Todd Molz
	Title:	Managing Director

	By:	/s/ Martin Boskovich
	Name:	Martin Boskovich
	Title:	Senior Vice President

	OCM PRINCIPAL OPPORTUNITIES FUND IV, L.P.

	By:	OCM Principal Opportunities Fund IV GP, L.P.
	Its:	General Partner

	By:	OCM Principal Opportunities Fund IV GP Ltd.
	Its:	General Partner

	By:	Oaktree Capital Management, L.P.
	Its:	Director


	By:	/s/ Todd Molz
	Name:	Todd Molz
	Title:	Managing Director

	By:	/s/ Martin Boskovich
	Name:	Martin Boskovich
	Title:	Senior Vice President


	OCM PRINCIPAL OPPORTUNITIES FUND IV GP, L.P.

	By:	OCM Principal Opportunities Fund IV GP Ltd.
	Its:	General Partner

	By:	Oaktree Capital Management, L.P.
	Its:	Director


	By:	/s/ Todd Molz
	Name:	Todd Molz
	Title:	Managing Director

	By:	/s/ Martin Boskovich
	Name:	Martin Boskovich
	Title:	Senior Vice President

	OCM PRINCIPAL OPPORTUNITIES FUND IV GP LTD.

	By:	Oaktree Capital Management, L.P.
	Its:	Director


	By:	/s/ Todd Molz
	Name:	Todd Molz
	Title:	Managing Director

	By:	/s/ Martin Boskovich
	Name:	Martin Boskovich
	Title:	Senior Vice President

CRIMSON EXPLORATION INC. 4