Keurig Green Mountain Inc. (Nasdaq: GMCR) will be acquired by a JAB Holding Co.-led investor group for about $13.9 billion in cash, bringing a massive windfall to shareholders after a year of watching the stock get battered.

Keurig, a maker of single-serve coffee brewers, will be privately owned and independently operated following the buyout, according to a statement Monday. The purchase price of $92 a share is 78 percent higher than the company’s closing price on Friday. The premium is the largest in beverage-industry history for any deal above $5 billion, according to data compiled by Bloomberg.

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