$4 billion Airgas has named Ellen Wolf to its board of directors. She also will serve on the audit committee.

Former roles by Wolf include senior vice president and CFO for USEC from 2003 to 2006, and vice president and CFO of American Water, a company she joined in May 1999.

Jaclyn Jaeger is a freelance contributor to Compliance Week after working for the company for 15 years. She writes on a wide variety of topics, including ethics and compliance, risk management, legal,...