Mitchill, a former United Technologies executive, replaced Toby O'Brien, who stepped down after six years as finance chief.
The combined company would be the second-largest aerospace and defense company in the Unites States.
The company is spinning off its Otis and Carrier businesses in a "pivotal" move to "drive sustained growth."
Like other aerospace suppliers, United Technologies is seeking to cut costs and enhance negotiating power in the face of pricing pressure from customers.
Twenty CFOs who have career-defining tests ahead.
The aerospace manufacturer reported mixed third-quarter results but boosted its share repurchase program.
Northrop Grumman, United Technologies, Reynolds American, C.H. Robinson, Goodman Networks, Synopsys, Tiptree Financial, Synaptics, Darling Ingredients
New federal guidance could spur demand for guaranteed lifetime income products, which ideally can function similarly to pensions.
United Technologies, MicronTechnology, Cengage Learning, MSC Industrial Direct, Keurig Green Mountain, The Wet Seal, Wesco Aircraft, Extreme Reach, Escalade
New Duke University/&splt;i>CFO&splt;/i> Magazine Global Business Outlook Survey finds finance executives united in their desire for tax reform.
