Changes to the ownership structure of the Company’s shares

The Management Board of Polimex-Mostostal S.A. with its registered office in Warsaw at ul. Czackiego 15/17 informs that the Company received from Aviva Powszechne Towarzystwo Emerytalne Aviva BZ WBK SA, acting pursuant to Article 69 (1) and (4) of the Act on Public Offer and conditions of organised trade in financial instruments, and on public companies, a notification on reduction by Aviva Otwarty Fundusz Emerytalny Aviva BZ WBK (hereinafter referred to as ‘Aviva OFE’) of the total number of votes at the General Meeting of Polimex-Mostostal S.A.

The reason for the change of the total number of votes at the General Meeting of Polimex-Mostostal S.A. was the disposal on 20 March 2011 of the Company’s shares.

Prior to the transaction settlement as of 26 April 2011, owned 52,500,022 shares of Polimex-Mostostal S.A., which constituted 10.07% of the Company’s business capital and entitled in total to 52,500,022 votes at the General Meeting of Polimex-Mostostal S.A., which constituted 10.07% of the total number of votes at the General Meeting of the Company.

Following conclusion and settlement of the transaction provided for as of 27 April 2011, Aviva OFE owned 51,872,954 shares of Polimex-Mostostal S.A., which constituted 9.95% of the Company’s business capital and entitled in total to 51,872,954 votes at the General Meeting of Polimex-Mostostal S.A., which constituted 9.95% of the total number of votes at the General Meeting of the Company.