Athens, May 17, 2012

ANNOUNCEMENT

ANNOUNCEMENT DATE OF THE Q1 2012

FINANCIAL RESULTS

SIDENOR S.A. informs the investment community that that it will release its Q1 2012 Financial Results on Wednesday May 30, 2012 and at the same day there will be an analyst conference call regarding these results.

The Data and Information, the Interim Financial Statements under IFRS for the period 1/1/2012 – 31/3/2012, as well as the respective press release will be posted on the company's website www.sidenor.gr, as well as on the ATHEX website www.athex.gr.

Note: More information regarding SIDENOR SA is available at the company's website (www.sidenor.gr).