Constellium to Report Third Quarter 2015 Results November 5, 2015

Amsterdam - October 21, 2015 – Constellium N.V. (NYSE and Euronext: CSTM) will announce its third quarter 2015 financial results on Thursday, November 5, 2015.

A conference call and webcast to present the results will take place at 11:00 a.m. (Eastern Standard Time) on the same day. The conference call will be hosted by Pierre Vareille, Chief Executive Officer, and Didier Fontaine, Chief Financial Officer.

Details of the conference call, webcast and accompanying presentation will be available on the Constellium Investor Relations page at:

https://www.constellium.com/financial-listing

The webcast can be accessed live at:

https://www.webcaster4.com/Webcast/Page/999/11055

To participate by telephone, please dial the following number and ask to be connected to the Constellium Q3 earnings call:

• USA: 1 866 376 8056
• France: 0 805 102 319
• Germany: 0 800 589 5393
• Switzerland: 0 800 246 787
• United Kingdom: 0 800 279 9489
• Other: 1 412 902 4221

An archive recording of the conference call and accompanying text version will also be available at the above noted web address for three weeks.

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