UPDATE: Stephen was traced safe and well.
Stephen McHenery, 50, was last seen around 9pm on Tuesday, March 15 in the Larkfield area of the town.
He is described as white, 5 ft 10ins in height, of medium build, with brown/grey hair and blue eyes.
When last seen he was wearing a black North Face or SuperDry jacket, light blue denim jeans and white trainers.
Police Scotland have launched an investigation and are asking the public's help.
READ MORE: Police search for missing Greig Cochrane from Paisley
Sergeant Scott Clark, Greenock Police Station, said: "Officers have been checking local CCTV and carrying out enquiries since Stephen was reported missing but so far there have been no further sightings of him and he has not been in touch with any family or friends, hence our concern.
"We are keen to hear from anyone who may know where Stephen may be.
"We’d also ask Stephen himself to call police or his family to let us know that he is safe and well.
"Any information can be passed to officers via 101. Please quote reference number 3464 of Tuesday, March 15 when calling."
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