Interim CFO Keltner to retire later in the year.
Day: March 1, 2017
Anita Zielinski will also act as senior vice president.
Fourth-quarter sales up 46.5 percent year-over-year.
Construction spending down 1 percent from December.
PMI up 1.7 percent from January, and overall economy grew.
Company adds supply chain solutions company to portfolio.
Acquisition expands company's geographic reach in Michigan.
Jon Mitchell, currently president of Sonepar subsidiary Codale Electric, takes over west region.
Seven out of 12 districts report modest economic growth.