* PSA Group in talks to buy GM's Opel/Vauxhall brands (Adds UK union, source, government comments)
* Lumos Networks enters into definitive agreement to be acquired by EQT Infrastructure
SAO PAULO, Feb 20 At least 54 percent of holders of Vale SA's preferred shares must approve a proposal by the company's controlling bloc to transform their stock into common shares, executives at the world's largest iron ore producer said on Monday.
BRIEF-Delight Restaurant Group announces acquisition of 30 Wendy's restaurants from The Wendy's Company
* Delight Restaurant Group announces acquisition of 30 Wendy's restaurants from The Wendy's Company as part of the company's previously announced system optimization initiative Source text for Eikon: Further company coverage:
Feb 20 Fiber-based service provider Lumos Networks Corp said on Monday it agreed to be bought by investment firm EQT Infrastructure in an all-cash deal with an enterprise value of about $950 million.
SAO PAULO, Feb 20 Vale SA plans to become a company with no defined controlling shareholder as soon as possible, in a landmark step aimed at enhancing transparency and equal rights for all shareholders in the world's largest iron ore producer.
LONDON, Feb 20 The head of Britain's biggest trade union is likely to meet the CEO of PSA Group on Friday amid growing concerns over the future of Vauxhall plants if the French carmaker buys the business from General Motors, a union source told Reuters.
LONDON, Feb 20 Prime Minister Theresa May will have a private conversation with the chief executive of Peugeot Carlos Tavares and is determined to protect Britain's car industry, her spokesman said on Monday.
* Shares rise 6.7 percent (Adds quotes, bullets, background, share price)
LONDON, Feb 20 Britain's business minister will be called to parliament to answer a question on Monday regarding Peugeot's proposed takeover of General Motors' Vauxhall car and van plants in Britain, the opposition Labour Party said on Twitter.
WEST PALM BEACH, Fla./WASHINGTON President Donald Trump may do another round of interviews for the position of national security adviser with new or existing candidates on Monday as he scrambles to fill the post following the ouster of Michael Flynn.