Mars, whose brands include M&M’s, Snickers and Skittles, is buying food company Kellanova in a deal worth nearly 30 billion dollars (£23.3 billion), giving it access to a huge portfolio of consumer brands from Pringles and Cheez-Its to Pop-Tarts.
Kellanova was created when the Kellogg Co, which was formed in 1906, split into three companies.
Kellanova, based in Chicago, houses many brands including Pringles, Town House, MorningStar Farms and Rice Crispies Treats.
It had net sales of more than 13 billion dollars (£10 billion) last year and has approximately 23,000 employees.
The deal is expected to close in the first half of next year.
Once it is complete, Kellanova will become part of Mars Snacking. It will remain based in Chicago.
“The Kellanova brands significantly expand our snacking platform, allowing us to even more effectively meet consumer needs and drive profitable business growth,” Andrew Clarke, global president of Mars Snacking, said in a statement.
Shares of Kellanova rose more than 8% before the opening bell Wednesday.