Occidental Petroleum Corp. has approved a plan in which Vicki A. Hollub will succeed Stephen I. Chazen as the company’s chief executive officer following “a thorough transition period.” Chazen has served in the position since 2011 (OGJ Online, Oct. 14, 2010).

Vicki A. Hollub also is currently being promoted to senior executive vice-president from executive vice-president (OGJ Online, July 11, 2014). She remains president of Oxy Oil & Gas.

Hollub has nearly 35 years of experience in the oil and gas industry, holding a variety of technical and leadership roles, both in the US and internationally. In 2013 she was appointed vice-president of Oxy and executive vice-president, US operations, Oxy Oil & Gas (OGJ Online, Oct. 11, 2013). She previously served as executive vice-president, California operations; and president and general manager, Permian basin operations.