[3] Mahinda is married to Kumudini Gunawardhana and the couple has one daughter, Nipuni Sharada and one son, Nandun Nisanka.
In 1977–79, he worked in Rajarata Sevaya of Sri Lanka Broadcasting Corporation along with his friend Gunadasa Madurasinghe.
[4] Mahinda started acting career with 1997 television serial Depethi Dahara directed by Malini Fonseka.
[6] His maiden cinema acting came through 2000 film Saroja directed by Somaratne Dissanayake with a minor role.
[2] Some of his notable films include Sir Last Chance, Ethumai Methumai, Hero Nero and 64 Mayam.