Aman Makkar resigned as chief executive officer of AppraiserLoft, a national provider of collateral valuation services. Shane Copeland, senior vice president of national sales, is now interim CEO. Copeland has been with the firm since 2008. Makkar remains with the firm and will work on new initiatives in mobile technology "not related to AppraiserLoft?s core valuation businesses," according to a statement Tuesday from the company. Makkar's departure is the second leadership change at AppraiserLoft in the past few weeks. Buffalo, N.Y.-based Kirchmeyer & Associates, a national appraisal, database and real estate consulting company announced in late July that it hired Bill Waltenbaugh as chief appraiser; Walternbaugh served the same role at AppraiserLoft since January 2010. While Makkar has stepped down from his role as CEO, his wife, Harpreet, continues as chief operating officer, according to the firm's page on the social networking site LinkedIn. "As the founder and CEO, Aman Makkar has been the driving force and leader for AppraiserLoft and we thank him for his vision and extreme dedication," said Copeland. "It is a small circle of people who can take a company from concept to market leadership and innovation like Aman has accomplished." Write to Jacob Gaffney. Follow him on Twitter @jacobgaffney.