Columbia University’s interim president, Katrina Armstrong, is departing her position in favor of Claire Shipman, co-chairwoman of the university’s board of trustees. Shipman will be the university’s third leader since August,

Katrina Armstrong said she was honored to help steer Columbia through some of the "most difficult moments in its history."

Katrina Armstrong, interim president of Columbia University, is stepping down, the school said in an announcement Friday.