CBRE and corporate venturing units GV and M12 exited as Siemens bought Building Robotics, the developer of building environmental control app Comfy.

BMW i Ventures is set to exit EV charger developer Chargemaster in a purchase of undisclosed size by BP.

Efficient Drivetrains, which had amassed $17.5m in capital, makes drivetrain systems for electric and hybrid-powered automotive vehicles based on research from UC Davis.

The Axel Johnson-backes apparel fitting technology developer has been bought by a group of Japanese investors for $12.7m.

Avexis, which is commercialising research from Ohio State University and Nationwide Children's Hospital, has been acquired by Novartis for $8.7bn.

WPP, News Corp, Microsoft and Deutsche Telekom will exit adtech provider AppNexus in a purchase that is reportedly worth about $1.6bn.

The artificial intelligence technology developer is set to be acquired by investor Microsoft in a deal that will also allow Samsung, Siemens and ABB to exit.

Simility, a developer of fraud detection software, is set to be acquired by corporate investor PayPal for $120m.