ST. LOUIS — Brett Begemann has been named president and chief commercial officer of Monsanto Co. In his expanded role as president, Mr. Begemann will lead the oversight and operational execution of the company's near-term expansion and growth in key international markets.

Mr. Begemann most recently was Monsanto’s executive vice-president and chief commercial officer for global business operations. He joined Monsanto in 1983, and throughout his career with the company has held a variety of roles across sales, marketing, commercial development as well as senior management positions worldwide.

Hugh Grant, who has been president and chief executive officer since May 2003, will continue as chairman and c.e.o. Mr. Grant will maintain ongoing responsibility for leading Monsanto’s long-term corporate strategy, as well as setting direction and maintaining oversight of its operations. He also will continue to focus on the delivery of strategic plans and policies for the organization.

“Brett has served as a valuable contributor to Monsanto’s agriculture business for nearly 30 years, including leading our global organization, implementing growth strategies both domestically and abroad, as well as delivering strong financial results to our business,” Mr. Grant said. “Brett’s leadership has played an important role in accelerating the company’s growth potential and I expect that to continue as our business looks to deliver on the next-generation of growth — both domestically and abroad.”