Morton have parted company with manager Jim Duffy, who had been in charge at Cappielow since replacing Kenny Shiels in May 2014.
The former Falkirk, Dundee, Hibernian, Brechin City and Clyde boss guided Morton to the play-offs and a Betfred Cup semi-final appearance last season but a disappointing recent run saw them finish in seventh place in the Ladbrokes Championship.
A statement on the club website read: “Greenock Morton Football Club announce that Jim Duffy has left his position as manager, having parted company with the club by mutual consent.
“We would like to thank Jim for his hard work and commitment to the club over the course of his four seasons and wish him the very best of luck in his future career.
“The board of directors will now focus on identifying and recruiting the right person to take Morton forward. The club will make no additional comment at this time but will provide further updates as soon as possible.”