SEATWAVE, Europe’s largest fan-to-fan ticket exchange, has raised $17m (£10m) in fourth-round funding led by Accel Partners, which is joined by existing investors Fidelity Ventures, Atlas Venture, Mangrove Capital Partners and Adinvest. Co-founder Sonali De Rycker will return to the Seatwave board as part of Accel’s investment. The company plans to invest in its core business and geographic expansion.