Outokumpu - Announcement regarding an arrangement which, if completed, will result in change in holdings (Chapter 9, Section 10 of the Finnish Securities Market Act)

| Source: Outokumpu Oyj

December 2, 2013 at 9.50 am EET

Outokumpu Oyj (business identity code 0215254-2) has received on November 30, 2013 a notification based on Chapter 9, Section 5 of the Finnish Securities Market Act from Ahlström Capital Oy (business identity code 1670034-3) and its subsidiary AC Invest Four B.V. (domicile in the Netherlands, register number 56534272).

This notification by Ahlström Capital Oy and AC Invest Four B.V. includes the following information:

AC Invest Four B.V.’s holding in the shares and voting rights of Outokumpu Oyj exceeds 5.0% (104 319 986 shares and voting rights) after the completion of the conditional share purchase agreement signed on November 29, 2013. AC Invest Four B.V. does not have any previous direct or indirect ownership in Outokumpu Oyj’s shares and voting rights.

AC Invest Four B.V. is indirectly 100% owned by Ahlström Capital Oy. AC Invest Four B.V., Nordea Bank and Skandinaviska Enskilda Banken have on November 29, 2013 signed a transaction agreement according to which AC Invest Four B.V. acquires 5.0% of Outokumpu Oyj’s shares. The transaction is subject to the completion of preceding corporate arrangements that were being negotiated at the same time and other similar transaction agreements with certain other purchasers and that there is a binding decision on the rights issue announced by Outokumpu Oyj on November 30, 2013. The transaction is expected to be completed during the first quarter of 2014. After the completion of the transaction, AC Invest Four B.V. will own 5.0% of Outokumpu Oyj’s shares. In connection with the transaction, AC Invest Four B.V. has committed to participate in the proposed rights issue announced by Outokumpu Oyj on November 30, 2013 by subscribing shares corresponding to its share of ownership in the proposed rights issue.

Outokumpu Oyj has a total of 2 078 081 348 shares. Each share carries one vote.

For more information:

Investors: Johanna Henttonen, tel. +358 9 421 3804, mobile +358 40 530 0778

Media: Kari Tuutti, tel. +358 40 717 0830

Outokumpu Group

Outokumpu is the global leader in stainless steel and high performance alloys. We create advanced materials that are efficient, long lasting and recyclable – thus building a world that lasts forever. Stainless steel, invented a century ago, is an ideal material to create lasting solutions in demanding applications from cutlery to bridges, energy and medical equipment: it is 100% recyclable, corrosion-resistant, maintenance-free, durable and hygienic. Outokumpu employs more than 15 000 professionals in more than 40 countries, with headquarters in Espoo, Finland and shares listed in the NASDAQ OMX Helsinki. www.outokumpu.com