AGREEMENT OF JOINT FILING (CONSTELLIUM N.V.)

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.X.X
	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/ Xxxxxx X. Xxxxxx.
					Xxxxxx X. Xxxxxx
					Vice President
	AMI (LUXEMBOURG) S.À.X.X.
	By:	AMI (Holdings) LLC
		its sole shareholder
		By:	/s/ Xxxxxx X. Xxxxxx
			Xxxxxx X. Xxxxxx
			Vice President
	AMI (HOLDINGS) LLC
	By:	/s/ Xxxxxx X. Xxxxxx
		Xxxxxx X. Xxxxxx
		Vice President

	APOLLO INTERNATIONAL MANAGEMENT, L.P.
	By:	Apollo International Management GP, LLC
		its general partner
		By:	/s/ Xxxxxx X. Xxxxxx
			Xxxxxx X. Xxxxxx
			Vice President
	APOLLO INTERNATIONAL MANAGEMENT GP, LLC
	By:	/s/ Xxxxxx X. Xxxxxx
		Xxxxxx X. Xxxxxx
		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/ Xxxxxx X. Xxxxxx
				Xxxxxx X. Xxxxxx
				Vice President
	APOLLO ADVISORS VII (EH), L.P.
	By:	Apollo Advisors VII (EH-GP), Ltd.
		its general partner
		By:	/s/ Xxxxxx X. Xxxxxx
			Xxxxxx X. Xxxxxx
			Vice President
	APOLLO ADVISORS VII (EH-GP), LTD.
	By:	/s/ Xxxxxx X. Xxxxxx
		Xxxxxx X. Xxxxxx
		Vice President

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

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