OP here: According to German newspaper Zeit, privacy-enhanced browser Cliqz [1] just acquired Ghostery for an undisclosed amount. With the deal, Cliqz wants to enhance its browser's anti-tracking capabilities. It also aims to enlarge its footprint of ~150.000 users and tap into Ghostery's 50m user count. The Ghostery team spinned of its business segment into Evidon, which is not part of the deal.
Disclaimer: I'm not affiliated to Ghostery or Cliqz (didn't know about the latter until just now).
[1] https://cliqz.com/us/
EDIT: Added link to Cliqz-US URL