Samsung, Presidio and Google had all invested in the advanced battery developer, which most recently raised $17m in December 2014.
The app developer had secured an undisclosed amount in seed funding from investors including Orange and Major League Baseball.
The Naver-owned messaging service, which initially planned to float last year, has suspended its plans to go public again.
The cancer treatment developer has raised $94m in equity and grant funding, with Pfizer, Celgene and Baxter among its shareholders.
A round up of all the latest news on www.globalcorporateventuring.com for our subscribers.
Edinburgh spinout FanDuel has acquired sports analytics company NumberFire for an undisclosed amount.
Spredfast has bought social marketing platform developer Shoutlet, which had raised almost $30m in financing, giving insurer American Family an exit.
Gene therapy developer RegenXBio, backed by investors including GlaxoSmithKline, has so far raised more than $110m in venture funding.
The Delta Electronics-backed company, which has developed an artificial heart for transplants, has filed for a $40m initial public offering on Nasdaq.
The ProSiebenSat.1 and Access Industries-backed music streaming service is considering another equity round or an initial public offering to raise more cash.
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