Business Insider reports that Uber will officially begin its IPO process in April. Uber will follow Lyft in filing public documents to sell shares to the public. Wall Street analysts estimate the company could be worth more than $100 billion. Uber and Lyft both filed confidentially for an IPO in December. Uber is a global logistics and transportation company most recently valued at $76 billion in the private market. The company is seeking a valuation as high as $120 billion.