July 12 (Reuters) - The following bids, mergers, acquisitions and disposals were reported by 0930 GMT on Friday:
** Global Infrastructure Partners (GIP) and Stonepeak are among the bidders for Singapore Power's 40% stake in Jemena in a potential deal that could value the Australian energy group at over $10 billion, two sources with knowledge of the matter said.
** Mining group Rio Tinto RIO.L is studying a refreshed list of takeover targets including Teck Resources TECKb.TO after the collapse of rival BHP's (BHP) bid for Anglo American AAL.L , Sky News reported.
** Australia's competition watchdog has started an informal review of the network sharing deal between TPG Telecom (TPG) and Optus, owned by Singapore Telecommunications STEL.SI , the regulator said.
** Top shareholder proxy firm ISS has recommended investors vote in favour of Japan's Electric Power Development's (J-Power) 9513.T A$381 million ($257.56 million) buyout of Australia's Genex Power (GNX) , according to an ISS report.
** Japan's SoftBank Group 9984.T has bought artificial intelligence chipmaker Graphcore for an undisclosed sum, ending long-running speculation over the company's future.
** Hedge funds Nut Tree Capital Management and Caspian Capital said on Thursday they have made an offer for Martin Midstream Partners MMLP.O , aiming to scuttle a bid from the fuels storage and transporter's largest shareholder to buy it out.
** Investment firm Anson Funds Management has amassed a stake in Five9 FIVN.O and is urging the U.S. call center software company to consider a sale, people familiar with the matter said.
