Andy Lee has been appointed president and CEO of Sumitomo Chemical's US-based subsidiaries, Valent USA Corporation (Walnut Creek, California) and Valent BioSciences (Libertyville, Illinois), from the end of March when Michael Donaldson retires. Mr Donaldson has been with Sumitomo for 14 years and became president of the two Valent businesses in 2009 (Agrow No 561, p 19). He also assumed the presidency of Pace International (Seattle, Washington) following its acquisition by Valent BioSciences in December 2012 (Agrow No 655, p 2). Valent BioSciences' executive vice-president and COO, Ted Melnik, will assume the role of president of Pace International on Mr Donaldson's retirement. Valent USA's vice-president of sales, Matt Plitt, will take over from Mr Lee as executive vice-president and COO of that business. After retirement, Mr Donaldson will serve as an adviser to the president of Sumitomo's health and crop sciences sector, Ray Nishimoto.