India, Aug. 13 -- N Chandrasekaran will step down as chairman of Tata Sons when his current term ends on February 20, 2027, wrapping up a nine-year tenure that transformed the scale and breadth of one of India's most influential conglomerates but ended with a standoff with Tata Trusts Chairman Noel Tata over his reappointment.

"I have completed 40 years of professional life at the Tata Group. I am grateful for the immensely satisfying opportunity to contribute to this venerable institution," Chandrasekaran, widely known as Chandra, said in a statement.

Chandrasekaran, 63, who has spent 40 years with the Tata Group, told the Tata Sons board on Wednesday that he would not offer himself for another term and asked the directors to decide on...