The merger would be followed by a three-way breakup of the combined company, The Wall Street Journal reported, citing people familiar with the matter. As of Tuesday’s close, Dow had a market valuation of $58.97 billion, while DuPont (DD.N) was valued at $58.37 billion. Dow’s chief executive, Andrew Liveris, is expected to be executive chairman of the new company, with DuPont Chief Executive Officer Edward Breen retaining that title, according to the Journal, which first reported the merger talks.