N Chandrasekaran has stepped down as Tata Sons chairman ahead of the August 18 AGM, sources said, amid tensions with shareholders. N Chandrasekaran has stepped down as Tata Sons chairman, according to NDTV reports, days ahead of the company's Annual General Meeting (AGM) scheduled for August 18. His resignation, if it brings his chairmanship to an early end, would trigger an unplanned leadership transition at the Tata Group. The development comes amid reported tensions with shareholders and differences between Chandrasekaran and Tata Trusts chairman Noel Tata. Further details on the leadership transition are awaited.