Concur co-founders Rajeev Singh and Michael Hilton announced they are leaving the company on Jan. 30,

according to three separate emails sent to employees and obtained Tuesday by Business Travel News. Concur appointed Elena Donio, previously Concur executive vice president and general manager of small and mid-size business, Concur president to replace Rajeev Singh effective immediately, according to co-founder Steve Singh's email. Barry Padgett, previously Concur EVP and general manager of Europe, Middle East and Africa, succeeds Hilton as EVP of travel services, according to the same email. Rajeev Singh and Hilton are available through June for "transition-related activities," the emails stated.