[9][10] Sathish was born to K. P. Sankaran and K. M. Komalam at Sankarayya Road, Poothole P.O in Thrissur district of Kerala, India.

Now, he is also a political leader of Nationalist Congress Party with the post secretary of Nationalist Labour Congress, Kerala, a Labour wing of N.C.P and state working president of Kerala Vazhi Vanibha Sabha (H.M.S) union.

He has also written Ghazals for a musical documentary film, Arabikadalinte Ghazal Nilavu as the tribute for Umbayee and its audio album, Sithaye Suthanuve was released on 1 August 2022 by Goa Governor P. S. Sreedharan Pillai, received by MLA K. K. Shailaja at Cochin.

[22][23][24][25][26] After some research about the sufferings and various problems faced by people of Laloor due to the heavy dumping of Municipal Garbage of Thrissur Municipal Corporation at their premises and the associated protest manifested through various forms of strikes, Sathish Kalathil wrote the Principal Story for his documentary Laloorinu Parayanullathu[29][12] Bhasi Pangil made a Script out of this Story about Laloor.

Krishnan Nair, secretary, Kerala Sangeetha Nataka Akademi and copy received by R. Gopalakrishnan, secretary, Kerala Sahithya Akademi at Prof. Joseph Mundassery Memorial Auditorium, Thissur, associated with D.F.M.F Short Film Festival-2013 contested by Digital Film Makers' Forum Trust.