The plan to merge the two companies was announced in December 2015.
DowDuPont, a public holding company, will break into three separate independent companies focusing on agriculture, materials science and specialty products. Post merger, the combined market cap was projected at USD 130 billion.
Shares of Dow and DuPont ceased trading at the close of the New York Stock Exchange yesterday and shares of DowDuPont are slated for trading on the NYSE today.
As per the merger agreement, Dow shareholders received a fixed exchange ratio of 1 share of DowDuPont for each Dow share, and DuPont shareholders received a fixed exchange ratio of 1.282 shares of DowDuPont for each DuPont scrip.
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The new combined entity said the transaction is expected to result in run-rate cost synergies of approximately USD 3 billion and the potential for approximately USD 1 billion in growth synergies.
DowDuPont said its board comprises 16 members - eight directors each from the two merged companies.
DowDuPont CEO Ed Breen said: "With the merger now complete, our focus is on finalising the organisational structures that will be the foundations of these three intended strong companies and capturing the synergies to unlock value."
With clear focus, market visibility and more productive R&D, each intended company will be equipped to compete successfully as an industry leader, he hoped.
Dow is headquartered in Midland and DuPont is based in Wilmington Delaware. The two firms have presence in India also.
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