Kirkland & Ellis LLP promoted Stanley M. Wash, Kevin J. Wessel, John Mason Wilkes, Spencer A. Winters, Lauren D. Yeager and Eric Yeager to partner.Wash focuses his practice in the area of litigation.Wessel’s practice focuses on structuring, negotiating, forming and operating private investment funds and related management companies.Wilkes concentrates his practice on complex business transactions, including mergers and acquisitions, leveraged buyouts, recapitalizations and restructurings and other general …