Gary L. Russell

Stifel, Nicolaus & Co., Inc. (Stifel) is a dual-registered broker-dealer and investment adviser headquartered in St. Louis, Missouri. Founded in 1890, the firm is a subsidiary of Stifel Financial Corp. (NYSE: SF), a financial service holding company. Stifel provides full-service brokerage and investment advisory services to individuals and their families, institutions and businesses, and financial advisors.

Invesco Advisers, Inc. is a SEC-registered investment advisor headquartered in Atlanta, Georgia. They are a subsidiary of Invesco Group Services, Inc., ultimately held by Invesco Ltd. (NYSE: IVZ). The firm was founded in 1986 and previously known as Invesco Institutional NA, Inc. until April 2010 when Invesco Ltd. consolidated the businesses of their US investment advisors (Invesco AIM Advisors, Inc., Invesco AIM Capital Management, Inc., Invesco AIM Private Asset Management, Inc. and Invesco Global Asset Management NA, Inc.) under the name Invesco Advisers, Inc. They provide discretionary and non-discretionary investment advisory services to individuals, institutional and high net-worth clients through separate accounts, wrap fee programs and US registered investment companies and other Commingled Funds.

Founded in 1999, Frost Securities, Inc. (FSI) is an investment banking firm and broker/dealer located in Dallas, Texas. The firm is a wholly-owned subsidiary of Cullen/Frost Bankers, Inc. (NYSE: CFR). They provide clients with financial advisory services related to mergers & acquisitions, recapitalizations and board-level analyses of strategic alternatives. FSI's execution capabilities include raising private institutional capital such as senior debt, mezzanine debt, preferred stock and common stock. The firm provides services primarily to middle-market companies in the Southwestern US. FSI's experience covers a wide range of comprehensive capital structure alternatives across a variety of industries including general industrial, healthcare, manufacturing, media, restaurant/food services, retail, business services, financial services, technology and telecommunications. Frost Securities is a member of FINRA.

Raymond James & Associates, Inc. (RJA) is a registered broker-dealer headquartered in St. Petersburg, Florida. The firm was founded in 1962 and is a subsidiary of Raymond James Financial, Inc. (NYSE: RJF), a diversified holding company. RJA offers a full array of capital markets services, strategic advice and planning for institutional investors.

Halliburton Energy Services, Inc. provides oilfield services. It offers technical products and services for petroleum, natural gas exploration and production. The company is headquartered in Houston, TX.