Andrew Patrick Ziccardi

Artisan Partners LP (Artisan Partners) is a mutual fund manager and SEC-registered investment advisor headquartered in Milwaukee, Wisconsin. The firm was founded in 2009 by Andrew Ziegler and is a wholly-owned subsidiary of Artisan Partners Holdings LP, itself a subsidiary of Artisan Partners Asset Management, Inc. (NYSE: APAM). Artisan Partners serves as investment adviser to a variety of separately managed accounts, unregistered pooled investment vehicles, trustees of collective investment trusts, and to each series of Artisan Partners Funds, Inc. (Artisan Partners Funds) and Artisan Partners Global Funds plc (Artisan Partners Global Funds), an open-ended management investment company.

TIAA-CREF Investment Management LLC (TCIM) is a registered investment advisor headquartered in New York City. The firm was founded in 1997 and is a wholly-owned subsidiary of TIAA-CREF Asset Management LLC, ultimately owned by TIAA Board of Governors. TCIM provides investment management and certain administrative services necessary for the operation of the College Retirement Equities Fund (CREF), a diversified open-end registered investment management company that consists of eight accounts, that issues individual, group and tax-deferred variable annuity contracts.