SoftBank and Dragoneer are leading a consortium that plans to invest $1 billion to $1.25 billion in Uber, the most highly valued venture-backed company in the world, along with a purchase of up to 17 percent of existing shares in a secondary transaction. Progress in the negotiations came after venture capital firm Benchmark, an early investor with a board seat in the ride-services company, and former Chief Executive Travis Kalanick Kalanick struck a peace deal, reaching an agreement over terms of the planned SoftBank investment.