SpotXchange, the video ad tech company that provides a technology platform for publishers and broadcasters to sell advertising on an automated basis, has sold a majority of its shares to Europe’s RTL, the companies announced today.

RTL, the giant broadcaster controlled by Germany’s Bertelsmann, is acquiring 65 percent  for $144 million, giving the company a valuation of $221 million.

SpotXchange is based in Denver.

The deal marks another big development in the M&A activity around video ad tech.   Earlier this month, competitor LiveRail was sold to Facebook for $400 million.

We interviewed SpotXchange CEO Mike Shehan in in June at the Cannes Lions festival. We have republished that interview today.

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