The Russian internet company has agreed to acquire an additional 12% share of social network Vkontakte, lifting its overall stake to 52%.

The Randstad Innovation Fund will target online, mobile, social media and big data, and has already made its first investment.

The executive will be promoted to head up the unit's US digital and mobile investments, and will be replaced by Jong Sang Choi.

Four years after establishing the European branch of electronics producer Samsung's corporate venturing arm, Michael Jeon will be moving to the US to oversee its mobile and digital investments.

The Sweden-based company, which uses nanotechnology to develop next-generation lighting products, counts Agder Energi Ventures among its existing investors.

Removals comparison website Buzzmove secures $650,000 seed funding after graduating from Telefonica's Wayra Academy.

Mode DX, a life sciences spin-out of the University of Glasgow, secures series B from prominent UK investors.

Allergy drug development firm Circassia floats on the London Stock Exchange in the biggest UK biotech initial public offering in years.