Exhibit 1

AGREEMENT OF JOINT FILING

(CONSTELLIUM N.V.)

In accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, the undersigned hereby confirm the agreement by and among them to the joint filing on behalf of them of the Statement on Schedule 13D and any and all further amendments thereto, with respect to the securities of the above referenced issuer, and that this Agreement be included as an Exhibit to such filing.  This Agreement may be executed in any number of counterparts each of which shall be deemed to be an original and all of which together shall be deemed to constitute one and the same Agreement.

IN WITNESS WHEREOF, the undersigned hereby execute this Agreement as of June 10, 2013.

APOLLO OMEGA (LUX) S.À.R.L
By:	AIF VII Euro Holdings, L.P.
	its sole shareholder
	By:	Apollo Advisors VII (EH), L.P.
		its general partner
		By:	Apollo Advisors VII (EH-GP), Ltd.
			its general partner
			By:	/s/ Laurie E. Medley.
				Laurie D. Medley
				Vice President
AMI (LUXEMBOURG) S.À.R.L.
By:	AMI (Holdings) LLC
	its sole shareholder
	By:	/s/ Laurie D. Medley
		Laurie D. Medley
		Vice President
AMI (HOLDINGS) LLC
By:	/s/ Laurie D. Medley
	Laurie D. Medley
	Vice President

APOLLO INTERNATIONAL MANAGEMENT, L.P.
By:	Apollo International Management GP, LLC
	its general partner
	By:	/s/ Laurie D. Medley
		Laurie D. Medley
		Vice President
APOLLO INTERNATIONAL MANAGEMENT GP, LLC
By:	/s/ Laurie D. Medley
	Laurie D. Medley
	Vice President
AIF VII EURO HOLDINGS, L.P.
By:	Apollo Advisors VII (EH), L.P.
	its general partner
	By:	Apollo Advisors VII (EH-GP), Ltd.
		its general partner
		By:	/s/ Laurie D. Medley
			Laurie D. Medley
			Vice President
APOLLO ADVISORS VII (EH), L.P.
By:	Apollo Advisors VII (EH-GP), Ltd.
	its general partner
	By:	/s/ Laurie D. Medley
		Laurie D. Medley
		Vice President
APOLLO ADVISORS VII (EH-GP), LTD.
By:	/s/ Laurie D. Medley
	Laurie D. Medley
	Vice President

APOLLO PRINCIPAL HOLDINGS III, L.P.
By:	Apollo Principal Holdings III GP, Ltd.
	its general partner
	By:	/s/ Laurie D. Medley
		Laurie D. Medley
		Vice President
APOLLO PRINCIPAL HOLDINGS III GP, LTD.
By:	/s/ Laurie D. Medley
	Laurie D. Medley
	Vice President
APOLLO MANAGEMENT VII, L.P.
By:	AIF VII Management, LLC
	its general partner
	By:	/s/ Laurie D. Medley
		Laurie D. Medley
		Vice President
AIF VII MANAGEMENT, LLC
By:	/s/ Laurie D. Medley
	Laurie D. Medley
	Vice President
APOLLO MANAGEMENT, L.P.
By:	Apollo Management GP, LLC
	its general partner
	By:	/s/ Laurie D. Medley
		Laurie D. Medley
		Vice President
APOLLO MANAGEMENT GP, LLC
By:	/s/ Laurie D. Medley
	Laurie D. Medley
	Vice President

APOLLO MANAGEMENT HOLDINGS, L.P.
By:	Apollo Management Holdings GP, LLC
	its general partner
	By:	/s/ Laurie D. Medley
		Laurie D. Medley
		Vice President
APOLLO MANAGEMENT HOLDINGS GP, LLC
By:	/s/ Laurie D. Medley
	Laurie D. Medley
	Vice President