N Chandrasekaran rose from a government school in Tamil Nadu and a 1987 TCS internship to become Tata Sons chairman in 2017.
His tenure was marked by Tata's return to aviation, major investments in semiconductors and EVs, and a push to integrate the sprawling group.
His August 2026 resignation comes amid months of reported friction between Tata Sons and Tata Trusts, with Chandrasekaran expected to complete his term until February 2027.
