Board member would be correct, as in someone who sits on a board of directors or board of management etc.

MBD

1992, elected to board of directors

The cast of Boys Will Be Joys - 1925 includes: Allan Cavan as Member, Board of Directors Joe Cobb as Joe Jackie Condon Mickey Daniels Johnny Downs William Gillespie as Member, Board of Directors Jannie Hoskins Mary Kornman William Orlamond as Member, Board of Directors Andy Samuel Paul Weigel as Henry Mills, board chairman Charley Young as Member, Board of Directors Noah Young as Officer

Larry Kramer was born on 1935-06-25.