(Adds Fosun, British Steel, ArcelorMittal, NuCom Group)
March 4 (Reuters) - The following bids, mergers, acquisitions and disposals were reported by 2000 GMT on Wednesday:
** Czech billionaire Daniel Kretinsky has tightened his grip on French retailer Casino, raising his stake to 6.88% of the capital and 5.17% of the voting rights, a regulatory announcement showed.
** Zambia has signed a contract of more than $824 million with a subsidiary of China Railway Construction Corporation to upgrade a rail line, the company said.
** Chinese conglomerate Fosun is in exclusive talks to buy German lender Bankhaus Lampe as it seeks to broaden its footprint in the financial services sector of Europe's leading economy, two people close to the matter said.
** Four bidders have expressed interest in buying British Steel's French business, France's finance minister said after Chinese steelmaker Jingye Group said it would buy its British and Dutch assets.
** ArcelorMittal said it had signed a deal that would see a significant injection of Italian state funding into the Ilva steelworks and would suspend a bid to walk away from the troubled plant, which it took over in 2018.
** German broadcaster ProSiebenSat.1 Media SE's e-commerce arm NuCom Group is nearing a deal to acquire Meet Group Inc that could value the U.S. dating app developer at more than $500 million, people familiar with the matter said.
** Shares in Sirius Minerals gained 17% after its shareholders voted in favour of Anglo American's 405 million pound ($518.04 million) bid to buy the fertilizer maker, prevailing over an activist investor who called the deal terms too low.
** Two leading German shareholders in Metro said that they had not been approached by Sysco over a potential takeover of the wholesaler by the U.S. food distributor.
** Online marketplace OLX Brazil has agreed to buy competitor Grupo ZAP for 2.9 billion reais ($642 million), forming a leading Brazilian player in digital real estate advertising, OLX and its European owners said.
** Australian pension funds First State Super and WA Super are exploring a merger, the two funds said, in the latest sign of consolidation in an industry facing regulatory calls to put customers first.
** Latin American e-commerce company Peixe is in advanced talks to acquire electric scooter firm Grow Mobility, four people with knowledge of the matter said on Tuesday, potentially the latest deal in a crowded sector where profitability remains an elusive goal.
** Investment group Exor said on Tuesday it has entered a memorandum of understanding (MoU) to sell its 100% stake in Bermuda-based reinsurer PartnerRe to France's Covea for $9 billion in cash.
** Office management platform Eden said on Tuesday it has acquired shared workplace operator WeWork's Managed by Q for an undisclosed sum. (Compiled by Ayanti Bera and Manojna Maddipatla in Bengaluru)