Fitchburg-based Quartz announces leadership change 

Quartz, a health insurance company headquartered in Fitchburg, announced in a press release today that Mark Selna is stepping away from his role as president and chief executive officer.  

Vice-President and General Counsel Christine Senty will serve as interim president and chief executive officer. Senty has over 25 years of experience in managed care. She joined the Quartz senior leadership team in 2015 and is secretary of the board.