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 is studying a refreshed

list of takeover targets including Teck Resources ( TECK )

after the collapse of rival BHP's bid for Anglo

American, Sky News reported.

** Australia's competition watchdog has started an informal

review of the network sharing deal between TPG Telecom ( TPGTF )

and Optus, owned by Singapore Telecommunications, the

regulator said.

** Top shareholder proxy firm ISS has recommended investors

vote in favour of Japan's Electric Power Development's ( EPWDF ) (J-Power)

A$381 million ($257.56 million) buyout of Australia's

Genex Power, according to an ISS report.

** Japan's SoftBank Group 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 ), 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 ) and is urging the U.S. call center

software company to consider a sale, people familiar with the

matter said.

(Compiled by Rajarshi Roy and Christy Santhosh in Bengaluru)