BERLIN, Feb 22 (Reuters) - Four of the six current members of Lufthansa's board, including its Chief Financial Officer Remco Steenbergen, will step down by the end of June, the company said on Thursday.

Michael Niggemann, board member in charge of human resources and infrastructure, will fill the CFO role on an interim basis, while Grazia Vittadini, now at Rolls-Royce, will join the board as chief technology officer.

The board will shrink from six members to five, with Dieter Vranckx, now CEO of Lufthansa subsidiary Swiss, will become board member for global markets and international hubs.

Harry Hohmeister, global markets and networks board member, and Detlef Keyser, fleet and technology board member, will also step down. (Reporting by Thomas Escritt Editing by Chris Reese)