Industry veteran Luke Hayden, who took over as president of PHH Mortgage less than two years ago, resigned from the firm this week to pursue what the company calls "other interests."
Also departing is company treasurer Mark Johnson.
Tuesday morning a spokeswoman for PHH Mortgage had no other information about their departures.
Parent company PHH Corp., Mt. Laurel, N.J. named Smriti Laxman Popenoe as interim president, replacing Hayden. Previously, she served as EVP and chief risk officer.
Among residential lenders and servicers, PHH Mortgage ranks seventh nationwide, according to figures compiled by National Mortgage News and the Quarterly Data Report.
The company has commenced a search for a permanent replacement for Hayden. PHH also named Richard J. Bradfield, SVP of capital markets, to replace Johnson.
In late December Jerome Selitto resigned as president and chief executive of parent company PHH Corp., and was replaced by the company's chief operating officer Glen Messina.
Selitto came to PHH in August 2009 during a period of turmoil at the top of the company. Earlier that year, dissident shareholders elected former Freddie Mac CEO Gregory J. Parseghian, along with another candidate to the company's board.
PHH is the largest nonbank lender in the U.S. The mortgage unit is profitable but has taken large mark-to-market losses on the value of its mortgage servicing portfolio.