Tom Lettenberger

Columbia Management Investment Advisers LLC (CMIA) is a registered investment advisor and mutual fund manager headquartered in Boston, Massachusetts. The firm is a wholly-owned subsidiary of Ameriprise Financial, Inc. (NYSE: AMP). The firm was formed in 2010 as the result of Ameriprise Financial Services' (AFS) acquisition of the long-term asset management business of Columbia Management Group (CMG) from Bank of America. AFS merged CMG's long-term asset management business with their subsidiary, RiverSource Investments LLC, under the name Columbia Management Investment Advisors. CMIA offers equity and fixed-income retail and institutional investment products for various types of clients.

BMO Asset Management Corp. (BMO AM) is a SEC-registered investment advisor headquartered in Chicago, Illinois. The firm was founded in 2012 and is a wholly-owned subsidiary of BMO Financial Corp. (BMO), which is in turn a wholly-owned subsidiary of Bank of Montreal (TSX: BMO), a Canadian diversified financial services company. BMO AM provides discretionary investment advisory services for, or provides non-discretionary investment advice to, institutions, individuals, and third-party sponsors of and clients participating in wrap-fee programs, as well as common and collective portfolios for which BMO Harris Bank, an affiliate of BMO AM, acts as trustee. In addition, BMO AM provides investment advisory services to private pooled vehicles and to affiliates for the benefit of their clients.

Columbia Management Group, Inc. provides asset management services. The company administers discretionary investment accounts for corporations, foundations, pension and benefit plans and endowments. The company also assists in tax and estate planning and portfolio management for high-net-worth individuals. Columbia Management Group is headquartered in Boston, MA

William Blair & Co. LLC (William Blair) is a SEC-registered broker/dealer firm headquartered in Chicago, Illinois. The firm was founded by William McCormick Blair in 1935 and is a subsidiary of WBC Holdings LP. Until 1941, they were known as Blair, Bonner & Co. William Blair provides broking services to individual, institutional and issuing clients.