Who is Atanu Chakraborty? The Resignation Letter That Cost HDFC Bank ₹1.6 Lakh Crore

In a high-stakes move to safeguard its reputation, HDFC Bank has appointed three prominent law firms—domestic leaders Trilegal and Wadia Ghandy & Co., alongside a marquee U.S.-based firm—to conduct a rigorous review of the sudden resignation of its Part-time Chairman, Atanu Chakraborty. 

The decision, approved during a board meeting on March 23, 2026, follows a week of market turbulence that saw the bank’s valuation plummet by approximately ₹1.6 lakh crore.

The “Ghost” in the Boardroom

Atanu Chakraborty, a retired IAS officer, resigned on March 18, citing that certain “happenings and practices” within the bank over the last two years were not in congruence with his “personal values and ethics.” 

The cryptic nature of his departure sent shockwaves through the financial sector, as HDFC Bank has long been viewed as the gold standard of Indian corporate governance.

MD and CEO Sashidhar Jagdishan described the situation as “fighting a ghost,” noting that despite efforts to persuade Atanu to elaborate on his concerns or amend his language, the former chairman remained steadfast. 

The bank has now tasked external counsel with a deep-dive investigation to determine if they indeed overlooked any substantive unethical practices.

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Scope of the Investigation at HDFC Bank

The law firms will conduct an exhaustive legal review covering a two-year window of the bank’s operations. Key focus areas include:

• Boardroom Scrutiny: An analysis of video recordings, minutes, and agendas from all board meetings since 2024.
• Whistleblower Audit: A review of all escalated whistleblower letters to assess if adequate action was taken.
• Management Interviews: Questioning current board members and senior executives to identify potential governance gaps.

Restoring Investor Confidence

While the Reserve Bank of India (RBI) quickly stepped in to approve HDFC veteran Keki Mistry as interim chairman and affirmed the bank’s financial health, investors remain wary. 

Analysts suggest that the rift may stem from disagreements over executive accountability, specifically regarding recent regulatory issues in Dubai and client losses linked to high-risk bonds. 

By initiating this proactive, independent assessment, HDFC Bank aims to benchmark itself against global transparency standards and provide a fact-based rebuttal to the “ethical” concerns raised in the resignation letter.

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