UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of August 2015

Commission File Number: 001-35931

Constellium N.V.

(Translation of registrant’s name into English)

Tupolevlaan 41-61,

1119 NW Schiphol-Rijk

The Netherlands

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:

Form 20-F  x            Form 40-F  ¨

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):

Yes  ¨            No   x

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):

Yes  ¨            No   x

INFORMATION CONTAINED IN THIS FORM 6-K REPORT

Attached hereto as Exhibit 99.1 is a copy of the financial report of Constellium N.V. relating to its half-year ended June 30, 2015 filed with the Netherlands Authority for the Financial Markets.

2

EXHIBIT INDEX

Exhibit No.	Description
99.1	Financial Report for the half-year ended June 30, 2015 filed with the Netherlands Authority for the Financial Markets.

3

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	CONSTELLIUM N.V.
	(Registrant)
August 12, 2015	By:	/s/ Didier Fontaine
	Name:	Didier Fontaine
	Title:	Chief Financial Officer

4