Murthy co-founded the blue-chip company in 1981 along with N.S. Raghavan, S. Gopalakrishnan, Nandan Nilekani, Shibulal and K. Dinesh, who resigned in April 2011.
Gopalakrishnan, who was co-chairman when K.V. Kamath was appointed chairman from April 2011 to May 31, 2013, has been re-designated as executive vice chairman on Murthy's return.
Among the executives who resigned during the last eight-nine months are board director and former chief financial officer V. Balakrishnan, its US-based consulting subsidiary head Stephen Pratt, another board member Ashok Vemuri and global sales head Basab Pradhan.
Balakrishnan joined the fledgling Aam Aadmi Party (AAP) to contest from the Bangalore Central Lok Sabha constituency in the April 17 general elections, while Vemuri joined the US-based leading IT firm iGate Corporation as its chief executive.
