Southwest Airlines, the $15.6 billionDallas-based air carrier, promoted Chris Monroe totreasurer. He succeeds Scott Topping, who left inOctober 2011 to become CFO and executive vice president at HawaiianAirlines. Monroe was named assistant treasurer in 2011 and alsoserved as financial analyst, director of ground operations planningand financial planning controller since joining the company in1991.

LPL Financial, a $3.4 billion Boston brokerage,appointed Dan Arnold CFO, effective June 15. Hesucceeds Robert Moore, 50, who was named presidentand COO. Arnold, 47, previously was head of strategy for LPL, thelargest independent brokerage in the U.S. He also served aspresident of Institution Services, a company LPL acquired fiveyears ago that provides banks and credit unions with investment andinsurance services

Hubbell, a $2.8 billion electrical andelectronic product manufacturer, named William R.Sperry CFO and senior vice president. He succeedsDavid G. Nord, 54, who was named president and CEOof the Shelton, Conn., company. Sperry, 50, has been Hubbell's vicepresident of corporate strategy and development since 2008. He haspreviously served as a managing director at Lehman Brothers andworked at J.P. Morgan and McKinsey & Co.

Walter Energy, a $2.5 billion Birmingham, Ala.coal producer, appointed William Harvey CFO.Robert Kerley, who served as interim principalfinancial officer, will continue as the company's corporatecontroller, chief accounting officer and vice president. Harvey,54, most recently was CFO and senior vice president at ResoluteForest Products, where he worked more than 20 years. He began hiscareer at Schlumberger, an oilfield services company.

Bruker Corp., a $1.6 billion Billerica, Mass.life sciences research equipment company, appointed CharlesF. Wagner Jr. as CFO and executive vice presidenteffective June 30. He succeeds William J. Knight,who remains part of the company's senior management team. Wagnerhas been a member of Bruker's board of directors and the auditcommittee of the board since 2010. He previously was CFO andexecutive vice president of finance and administration at ProgressSoftware and CFO and vice president at Millipore Corp.

Dunkin' Brands, the $628 million owner of theworld's leading donut chain and Baskin-Robbins ice cream stores,promoted Paul Carbone to CFO. He replacesNeil Moses, 53, who was named chief globalstrategy officer. Carbone, 46, has served as the company's vicepresident of finance and strategy. Prior to joining Dunkin' in2008, he was CFO and senior vice president for Tween Brands.