Here is a quote from an August 19, 2011 Bloomberg interview, "If DexCom can double its stock price to $20 or more as a result, Gregg said he’d be open to takeover bids." The result he spoke of, was the introduction of the new/current CGM. He also said the company should be profitable, but he subsequently increased his spending, purchasing a software company and boosting research so the profitability requirement may no longer be on the table.
I am not counting on a buyout, but the story speaks for itself. If you want to read the whole story, look on the internet for the title, Device Maker DexCom May Be for Sale in 2012, CEO Gregg Says. Sorry for not providing a link, but Yahoo has been deleting my posts with links attached, at least that has been my experience.