Attorneys for former Uber Technologies Inc. CEO Travis Kalanick on Monday filed to move a public battle over control of the ride-hailing company’s board into a confidential arbitration, saying in a Delaware court filing that an investor lawsuit seeking to oust him from the board violated corporate agreements and threatened to harm the company.

Kalanick, who has called the lawsuit from Benchmark Capital Partners a “personal and public attack,” doubled down on his attacks Monday, just two days before a Delaware judge is set to hear arguments on how the case should proceed.