"Absolutely no chance of that," Buffett told CNBC on Tuesday.
Winters, CEO and founder of Wintergreen Advisers, has sent letters to Coca-Cola's shareholders, its board, and Buffett, criticizing the company's 2014 equity plan, which Winters said "will significantly erode the per-share value of Coca-Cola shares."
As of last month, Buffett's Berkshire Hathaway (BRK-A) owned 400 million shares of Coca-Cola, just over 9 percent of the shares outstanding.
Coke shares rose 0.3 percent in early trading. The stock had been up more than 1 percent in premarket trading following Winters' comments in a Fox Business interview.
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