Deutsche Börse and the London Stock Exchange Group laid out further details on June 1 of their planned $30 billion merger, disclosing that investors in both companies will decide on the deal after the UK’s vote on whether to stay in the European Union.

In a joint statement, Europe's largest exchange operators said that LSE investors will get to vote on the deal on July, 4, while the tender offer for Deutsche Börse's shareholders is to end on July 12.