Bird, one of many scooter startups currently sweeping the US, was last valued at $400 million after closing $100 million in series B funding in early March. In late May, Bird was reported to be raising $150 million in series C funding led by Sequoia Capital, at a $1 billion valuation.
People familiar with the deal told Quartz that at least three investors involved in that round—Sequoia, Accel, and Tusk Ventures—have already signed documents and wired money to Bird.