Sean Fingleton's work is rooted in the Irish landscape. He has painted in Donegal, Wicklow, Mayo, Clare and Dublin. He has received many awards including Irish Arts Council bursaries, a GPA award in 1986 (as an emerging artist), and a Fergus Ryan RHA award in 1983. He has been twice a prizewinner at Claremorris Open Exhibition. Most recently his work was featured in the Winter Exhibition at the Taylor Galleries in 2012. He was exhibited at Cavanacor Gallery summer exhibition of 2012 and the Boyle Arts Festival of 20II. He has had one-man shows in Dublin, Tokyo and London. His work is characterized by long brush strokes of vibrant hues of expressive colour. Some of his most recent landscapes have been conceptualised, where the passage of time is suggested, different weather and the changes of the seasons are implied. Landscape becomes timescape.
His work features in many collections including Irish Museum of Modern Art, the European Parliament in Strasbourg, the Arts Council, Aras an Uachtarain, Bank of Ireland, Letterkenny Institute of Technology, the Royal Hospital Gloucester, and St. Vincent's Hospital. He is a member of Temple Bar Gallery and Studios. He is also a member of Aosdana.