MOSCOW, June 18 (Reuters) - Kamaz : * Russian Technologies buys 12.2 percent of shares in Russia's biggest truck maker Kamaz from Troika Dialog, now has a 49.9 percent stake - Troika Dialog * Daimler buys additional 1 percent, now together with the European Bank for Reconstruction and Development (EBRD) has a 15 percent stake * Troika Dialog says remains shareholder in Kamaz with an undisclosed stake