April 12 (Reuters) - Mainstream Group Holdings Ltd MAI.AX :
* CONCLUSION OF 'GO SHOP' PERIOD AND EMERGENCE OF A SUPERIOR PROPOSAL
* SUPERIOR PROPOSAL HAS EMERGED FROM SS&C TECHNOLOGIES HOLDINGS FOR $2.00 CASH PER SHARE
* UNDER SCHEME WITH SS&C, SS&C AND/OR ASSOCIATED COS WILL BUY 100% MAINSTREAM
* DEED IS CONDITIONAL UPON VISTRA NOT EXERCISING VISTRA MATCHING RIGHT, CO TERMINATES DEED AND PAY VISTRA BREAK FEE OF $1.708 MILLION
* SS&C INTENDS FOR MAINSTREAM'S CEO, MARTIN SMITH, TO REMAIN WITH BUSINESS AFTER ACQUISITION