OREANDA-NEWS. March 11, 2011. Trading in ordinary shares of OSC "SIGMA" (RTS Classica ticker – SGMA, RTS T+0 Market ticker - SGMAG) in non-anonymous mode and on T+0 Market will be suspended on March 11, 2011 and March 15, 2011 respectively. On March 15, 2011 trading in these securities will be stopped after the ending of the trading session.

The suspension will take place, due to the information on a shareholder’s offer to buy out these securities made in compliance with the federal law "On Joint Stock Companies", article 84.8. The list of shareholders whose stocks will be bought will be drawn up as of March 15, 2011.

RTS Classica is the oldest organized stock market in Russia – trading was opened on July 5, 1995. The prices that are discovered on RTS Classica are a well-acknowledged guideline for the investors who trade in Russian shares and depositary receipts representing them. RTS market data is transmitted to a large number of clients in Russia and abroad and is a basis for calculation of the main benchmark of the Russian stock market – RTS Index.

Trading on the RTS T+0 Market is held on the basis of anonymous trading of Order-Driven Market using a "Delivery Versus Payment" technology with 100% advance depositing of assets.