The 78-year-old Tata is now part of the selection panel that has been asked to search the next Chairman of Tata Sons Ltd, the group's main holding company, within next four months and he would also serve as interim chairman in this period.
A low-profile man to the extent of being reclusive, Mistry, now 48, was a surprise choice to succeed Tata, who retired on December 29, 2012 as Chairman of the one of country's oldest business empires.
However, in nearly four years since he took over the reins of the salt-to-software conglomerate, Mistry had to face many challenges in both domestic and global markets as many of the group companies faced headwinds.
He undertook a strategy of divesting assets in contrast to what his successor did.
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Company Ltd (IHCL), which runs Taj Group of hotels, completed sale of Taj Boston hotel for USD 125 million (about Rs 839 crore).
The hospitality firm had also sold off 12.7 lakh shares of Belmond (earlier known as Orient Express, which the Tata Group tried unsuccessfully to acquire in Ratan Tata's time) for a consideration of USD 11.96 million. IHCL had also sold BLUE Sydney, a Taj Hotel, to Australia Hotels & Properties Ltd for AUD 32 million (nearly Rs 179 crore) in 2014.
Contrary to these developments, Tata led the group into some notable acquisitions, starting from Tetley by Tata Tea for USD 450 million in 2000 to steelmaker Corus by Tata Steel in 2007 and the landmark Jaguar Land Rover in 2008 for USD 2.3 billion by Tata Motors.
While the reasons for Mistry's sacking by the Tata Sons board is not clear, according to sources, the decision taken on the suggestion of Tata Trusts.
"In the long term interest of Tata Sons and the Tata Group, the principal shareholders -- Tata Trusts suggested to the Board of Tata Sons that it would be appropriate to look for a change and look forward," a source said.
About 66 per cent of the equity capital of Tata Sons is held by philanthropic trusts endowed by members of the Tata family. The largest of these trusts are the Sir Dorabji Tata Trust and the Sir Ratan Tata Trust, which were created by the families of the sons of Jamsetji Tata, the Founder.
Mistry belongs to Shapoorji Pallonji, which is the single largest shareholder in Tata Sons with 18.4 per cent stake.