(Adds J&J, Piraeus Bank and CVC)
Dec 29 (Reuters) - The following bids, mergers, acquisitions and disposals were reported by 2100 GMT on Thursday:
** Johnson & Johnson is negotiating a deal to acquire Swiss biotechnology company Actelion Ltd that would separate its commercialized portfolio from its research and development (R&D) assets, people familiar with the matter said.
** Greece's largest lender Piraeus Bank said that it had completed the sale of a majority stake in its Cyprus subsidiary to Holding M. Sehnaoui SAL for 3.2 million euros ($3.3 million), reducing its stake to 17.7 percent.
** Brazilian travel agency CVC Brasil Operadora e Agencia de Viagens SA will buy smaller rival Experimento for 41 million reais ($13 million), the company said in a securities filing.
** China Construction Bank Corp (CCB), has signed around 30 billion yuan ($4.31 billion) worth of debt-for-equity swaps with eastern Anhui province's state-owned coal and steel firms, the official Xinhua news agency said late on Wednesday.
** National Bank of Oman (NBO) said it had received a letter from Treasure Fleet International proposing to buy a stake in Oman's third biggest lender.
** Swiss airline catering company Gategroup Holding said it was buying Air France KLM's catering business Servair for 237.5 million euros ($248.3 million), including debt, to create the world's leading inflight catering group.
** Brazil's largest private bank, Itaú Unibanco Holding SA, has completed the acquisition of 40 percent of Banco Itaú BMG Consignado SA, specialized in payroll loans, for 1.46 billion reais ($445 million), the bank said in a securities filing on Wednesday.
** Brazil's state-run oil company Petroleo Brasileiro SA closed the sale of a 100 percent stake in Nansei Sekiyu to Taiyo Oil Company, according to a securities filing.
** Malaysia's Federal Land Development Authority (Felda) has secured government financing to fund its $505.4 million purchase of a minority stake in Indonesian palm oil firm PT Eagle High Plantations Tbk, state news agency Bernama reported.
** China's cash-strapped LeEco said it is in talks to secure 10 billion yuan ($1.4 billion) from an unidentified strategic investor, but the announcement was seen as insufficient to dispel concern over the high-tech conglomerate's financial health.
** Italy's Prime Minister said the government is not indifferent to France's Vivendi building its stake in private broadcaster Mediaset, but has no special powers to counteract the move. (Compiled by Ahmed Farhatha and Aravind K in Bengaluru)