Wal-Mart Stores Inc. (NYSE: WMT) is one of the leading retail store operators in the world. The company operates 11,527 stores in 28 countries and e-commerce sites in 11 countries. Wal-Mart, which has headquarters in Bentonville, Arkansas, also operates retail stores under the Sam's Club name. Wal-Mart's stores include discount stores, supermarkets, warehouse clubs, home improvement stores, specialty electronics stores, convenience stores and membership-only warehouse clubs. The company's online stores operate as Walmart.com and SamsClub.com.

For the fiscal year ending on Dec. 31, 2015, revenues for Wal-Mart totaled $482.13 billion, and the company generated net income of $14.69 billion. As of Aug. 6, 2016, the company had a market capitalization of $229.88 billion. Its management team includes three senior executives who drive important strategic initiatives at the company.

Gregory B. Penner

Gregory B. Penner has served as chairman of the board of directors at Wal-Mart since 2015, following his father-in-law Rob Walton and company founder Sam Walton in the position. The board's role is to enact strong corporate governance to ensure the company acts with integrity and holds corporate officers accountable for their decisions. Penner founded Menlo Park, California-based investment management firm Madrone Capital Partners and serves as a general partner.

Penner has also worked with Wal-Mart in several other roles over the past 20 years, including senior vice president and chief financial officer in Japan, and senior vice president of finance and strategy for Walmart.com. Penner has served as a member of the board since 2008. He has also served on two oversight committees. Prior to his tenure at Wal-Mart, Penner worked as a financial analyst at Goldman Sachs Group Inc. (NYSE: GS) and as a general partner of Peninsula Capital. He holds a Bachelor of Science in international economics from Georgetown University and a master's degree in business administration from Stanford University.

Doug McMillon

Doug McMillon is the president and CEO of Wal-Mart. He serves as the leader of the management team at the company and spearheads important initiatives such as the integration of the company's stores, logistics network and digital commerce channels. McMillon's responsibilities include expanding the avenues through which customers access the company's products. He began his career with Wal-Mart as a summer associate in a distribution center and worked as an assistant manager in a Tulsa, Oklahoma store while earning a Master of Business Administration degree from the University of Tulsa. He later moved to merchandising as a buyer trainee and served in senior roles in all of the company's areas of business.

From 2006 to 2009, McMillon was president and CEO of Sam’s Club. From 2009 to 2014, he served as president and CEO of Wal-Mart International, which operates 6,400 stores in 26 countries outside the United States. Since 2013, McMillon has served as a member of the board of directors. He also chairs the Executive and Global Compensation committees. Prior to earning his MBA, McMillon graduated from the University of Arkansas with a Bachelor of Science degree in business administration.

Michael Bender

Michael Bender is chief operating officer of global e-commerce for Wal-Mart. He heads the company’s global strategy for online commerce and is tasked with integrating digital commerce into the company's sales platforms. Prior to this role, Bender served as executive vice president and president of the Wal-Mart West business unit and directed the company’s business in 22 states. He also served as a senior vice president of the company's mountain division, which encompassed operations in Arizona, Nevada, Utah, Colorado, New Mexico, Idaho, Montana and Wyoming. Bender joined Wal-Mart in 2009 as a vice president and regional general manager for a territory that included the company's stores in Arizona, Nevada and Utah.

Bender previously held executive roles at Cardinal Health Inc. (NYSE: CAH), including a stint as president of the retail and alternate care business. Prior to his employment at Cardinal Health, Bender served as vice president of store operations for Victoria’s Secret in Columbus, Ohio, as well as in executive roles with Pepsi-Cola North America. He earned a bachelor’s degree in economics from Stanford University and a master’s of management in finance, marketing and management policy from Northwestern University.

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