The Lubrizol Corp. recently announced several officer changes, driven in part by the completed acquisition of Lubrizol by Berkshire Hathaway, as well as by the retirement of some executives.

James L. Hambrick remains chairman, president and CEO. In addition, Lubrizol's executive leadership team includes Suzanne Day, corporate vice president, general counsel and chief ethics officer; Bob Graf, corporate vice president, Research and Development; John King, corporate vice president, Information Systems and Business Processes; Eric Schnur, president, Lubrizol Advanced Materials; Dan Sheets, president, Lubrizol Additives; Greg Taylor, corporate vice president, Strategy, Development and Communications; Brian Valentine, corporate vice president, CFO, and treasurer, as well as assuming global risk management responsibilities; and Mike Vaughn, who will become corporate vice president, Operations, Supply Chain and HSES.

Andy Panega has joined the company as corporate vice president, Human Resources. Panega brings 30 years of experience in human resource management, serving in both corporate and consulting roles.

The following Lubrizol executive officers have retired:

• Charlie Cooley, senior vice president, chief financial officer
• Greg Lewis, corporate vice president, global risk management and chief ethics officer
• Larry Miller, corporate vice president, human resources
• Patrick Saunier, corporate vice president, information systems and business processes

The following officers will retire later this year or in the first half of 2012:

• Steve Kirk, senior vice president and COO
• Larry Norwood, corporate vice president, Operations
• Leslie Reynolds, corporate secretary and counsel

For more information, visit www.lubrizol.com.