YRC Worldwide, the $4.3 billion transportation and logistics company, named Christopher Wren treasurer and senior vice president. Bill Trubeck, YRC's interim CFO, had been handling the treasury responsibilities. Wren, 44, joins the Overland Park, Kansas, company from consulting firm Power I.T. Earlier, he was vice president of corporate development at H&R Block, vice president of product development at Positive Networks, and held a number of positions at Sprint. Wren started his career as a lawyer.

Northern Trust, the Chicago-based financial services company with $4.4 trillion in assets under custody and 2010 revenue of $4 billion, named Michael O'Grady CFO. He succeeds William Morrison, who was promoted to president and COO. O'Grady, 46, joins Northern Trust from Bank of America Merrill Lynch, where he was head of the depository institutions group for the Americas in the bank's financial institutions investment banking group. O'Grady joined Merrill Lynch in 1992.

Comerica, the Dallas-based financial services company with $54 billion in assets and $2.6 billion in 2010 revenue, named Karen Parkhill vice chairman and said she will become CFO in the third quarter. Elizabeth Acton, the current CFO, plans to retire in April 2012. Parkhill, 45, joins Comerica from JPMorgan Chase, where she most recently served as CFO for commercial banking. She began working at JPMorgan's investment bank in 1992 after starting her career as an analyst at Rauscher Pierce Refsnes.

Tetra Tech, a $2.2 billion provider of consulting, engineering and construction services in Pasadena, Calif., named Steve Burdick CFO and treasurer. Brian Carter replaces Burdick as corporate controller, chief accounting officer and vice president. Burdick, 47, succeeds David King, who left in April to become CFO of SunTech Power. Burdick was CFO at Aura Systems and TRW Ventures before joining Tetra Tech in 2003. Carter, 43, previously was vice president of finance and administration at Wedbush.

USEC, a supplier of enriched uranium for nuclear power plants with $2 billion in 2010 revenue, named Marian Davis chief audit executive and vice president. It is a new position for the Bethesda, Md.-based company. Davis most recently was senior vice president of corporate internal audit at Sunrise Senior Living, where she established the internal audit function. Earlier, she worked in finance positions at HMSHost, Host Hotels & Resorts and Marriott International. Davis began her career at PricewaterhouseCoopers.

Alexander & Baldwin, the $1.6 billion ocean transportation, logistics and agribusiness company, appointed Joel Wine CFO, treasurer and senior vice president. He replaces Christopher Benjamin, the company's CFO since 2004, who was named president of A&B Land Group. Wine, 39, joins the Honolulu-based company from Goldman Sachs, where he spent 14 years, most recently as a managing director and senior investment banking director. Alexander & Baldwin had been a client of Wine's since 2002.

Toro Co., the $1.5 billion maker of lawn equipment, named Renee Peterson CFO and vice president of finance. She succeeds Stephen Wolfe, who is retiring after more than 25 years with the company. Peterson, 50, most recently was vice president of finance and planning for the truck and automotive segments at Eaton Corp. She joined Eaton in 2008 as vice president of finance, information technology and business development after 25 years at Honeywell International.

Interstate Hotels & Resorts, an Arlington, Va.-based hotel management company with 334 properties around the world and 2010 revenue of $779.5 million, named Julie Pangelinan CFO. She succeeds Bruce Riggins, who left in January to become CFO of LaSalle Hotel Properties. Pangelinan, 47, was CFO at Sunrise Senior Living prior to joining Interstate. Earlier, she spent six years as vice president of accounting policy at Marriott International and was an audit partner at BDO Seidman.