When an Exit Letter Becomes an Exhibit

Four words changed the mood in Indian boardrooms this year - "ethical differences with management." That was the language Mr. Atanu Chakraborty used when he stepped down as part-time Chairman and Independent Director of HDFC Bank in March 2026. The resignation wiped billions off the bank's market value, prompted SEBI's Chairman to publicly call on independent directors to act responsibly, and led the RBI to step in simply to reassure stakeholders about the bank's stability.

No fraud was alleged. No regulatory breach was found. Yet the market reacted anyway - not to facts, but to the absence of them.

A resignation letter without structured disclosure does not close a chapter. It opens an investigation.

The regulator has said the quiet part out loud

SEBI's Chairman was direct: independent directors cannot raise insinuations without evidence and records. If they have concerns about how a company is run, those concerns must go to the board first, and if unresolved, must be recorded in the minutes. In other words, dissent is welcome, drama is not. The regulator is not discouraging honesty; it is insisting that honesty leave a paper trail.

This is not a one-off remark. SEBI's High-Level Committee on conflict of interest, constituted in 2025, exists precisely because ambiguous, values-laden resignations were unsettling markets - and its recommendations are already being converted into regulatory action aimed at eliminating not just actual conflict of interest, but the perception of it. For a listed company, perception is the market.

The number that should worry every boardroom

Nearly 549 independent directors resigned from Indian companies in FY25 alone, 94% of them mid-term - a scale being compared with the 1,390-plus exits seen in 2019. The pattern repeats itself: directors leave firms facing financial distress, regulatory sanction or governance lapses, citing promoter-driven opacity, restricted access to financial data, or fear of personal liability.

• Byju's saw directors cite promoter-controlled decision-making.
• Paytm's board thinned out as RBI penalties mounted.
• PMC Bank's directors were investigated for failing to catch loan irregularities they say they never had visibility into.
• IL&FS remains the cautionary tale everyone cites and few actually build safeguards against - directors held liable for oversight failures despite claiming they never had the information to oversee anything.

None of this is abstract for a company secretary or general counsel. Every one of those exits began with a letter that someone in the legal or secretarial function had to receive, process and file.

Where the real exposure sits - and it is not with the director

The departing independent director's discomfort is their problem. The company's disclosure response is yours. A resignation letter that vaguely gestures at "governance concerns" without board-level context puts the compliance officer and company secretary in an impossible position:

• File it as-is, and risk a SEBI query on inadequate disclosure under Regulation 30.
• Sanitise it, and risk being accused of suppressing a material fact.

The fundamental point is this: the moment of resignation does not matter - the paper trail leading up to it does. A resignation is never really a single-day event. It is the last visible step of a process that should have been documented for months. Where that process was not documented, the resignation letter becomes the only record, and it will be read that way by SEBI, by the exchanges, and eventually by the NCLT or a shareholder action if matters deteriorate further.

What changed in 2026 - SEBI's disclosure architecture

Detailed reasons plus written confirmation. Listed entities must ensure the resignation filing includes detailed reasons for the resignation - not "personal reasons" as a black box - together with a written confirmation from the independent director that there are no other material reasons beyond those stated. This is no longer best practice; it is the baseline disclosure expectation.

A seven-day window. From 1 September 2026, the detailed reasons and the confirmation letter on "no other material reasons" are expected to reach the exchanges within seven days of the resignation. Read with Regulation 30's existing obligation of prompt disclosure, this effectively creates a hard seven-day window for a complete, structured resignation disclosure pack.

A codified template. The Master Circular dated 30 January 2026 for compliance with the LODR Regulations governs independent director resignation disclosures, codifying the reason-plus-confirmation structure and standardised disclosure fields - reason, material disagreement yes or no, other directorships, and the like.

The operational impact is straightforward: a vague, one-line resignation letter is now a compliance gap, not merely a governance irritant. The company secretary must either obtain a supplemental letter carrying detailed reasons and the required confirmation, or file an initial intimation followed by a complete disclosure within seven days.

How an independent legal review handles a vague exit letter

The HDFC Bank episode shows how a listed company can respond to a high-profile, values-laden resignation that implies governance concerns without specifying concrete breaches. The board appointed two external law firms - one international, one Indian - to conduct a three-month independent review covering board and committee minutes and supporting papers over a multi-year period, contemporaneous records around key decisions and approvals, and witness interviews with relevant directors, senior management and governance function heads.

The objective was not a forensic audit of transactions. It was to test whether there was any documentary or testimonial support for the implications in the resignation statement. The resignation letter used broad ethical framing rather than alleging specific legal or regulatory violations, and the review treated that as a factual proposition to be tested: did board records show dissent or unresolved concerns raised by the chair; were there material deviations from approved processes; did witness accounts corroborate unaddressed governance objections?

The conclusion was categorical - the contemporaneous evidence reviewed was inconsistent with the statement, and the review did not identify any basis for it. Board and committee minutes showed no contemporaneous record of dissent or unresolved ethical concerns. No evidence supported the specific matters that media coverage had linked to the resignation narrative. Processes had been followed, and no systemic governance failure of the kind implied was identified.

The findings were summarised in a stock exchange filing and quoted in investor communications - a clear statement that an independent legal review had been commissioned, a description of its scope, and a direct quote from the law firms' conclusion. For other boards, this sets a template: where an exit letter is vague but market-moving, an independent, scoped legal review converts a "he said" narrative into a documented, defensible position.

What boards and secretarial teams should be doing now

• Escalation, not silence. Every concern raised informally by an independent director should be minuted within a defined window, even if resolved quickly. A resolved concern with no record is, on paper, an unaddressed one.
• A pre-resignation dialogue protocol. Before accepting a resignation citing concerns, the Chairperson or Audit Committee should document that the director was offered the vigil mechanism or a committee route to formalise the issue.
• A standardised exit letter architecture. Separate the stated reason from supporting context, so the letter does not read as an accusation without evidence - which is exactly what invites regulatory follow-up.
• Attach what the regulator actually wants. The letter should be accompanied by the director's current directorships and committee memberships, and by the confirmation that no undisclosed material reason exists.
• Watch the reappointment trap. A director resigning and shortly rejoining the same listed entity in an executive role raises a direct question about how independent their judgment was while serving. If that pattern exists anywhere in your group structure, flag it before a regulator does.

A checklist for company secretaries and general counsel

• Confirm effective date and DIN; prepare the board resolution.
• Obtain a written resignation letter with clear, structured reasons.
• Secure a confirmation that there are no other material reasons.
• Check whether concerns were previously raised through board or committee minutes, the vigil mechanism, or email trails and notes to the Chair.
• Where concerns are cited, document any pre-resignation dialogue offering formal channels, and ensure the board has considered and recorded its position.
• Prepare the Regulation 30 filing within the prescribed timelines, enclosing the letter, the board resolution, the director's confirmation and the list of other directorships and committees.
• From 1 September 2026, ensure detailed reasons and the confirmation are disclosed within seven days.
• Flag any reappointment in a new capacity within the group for conflict-of-interest review.

The bottom line

Boards do not get to control why an independent director walks. They absolutely control how documented that walk-out is - and in this environment, that difference is what keeps a company secretary out of a show-cause notice and a Chairperson out of a headline. The HDFC Bank episode was never about whether the former chairman was right or wrong. It was about what happens when a resignation letter becomes the only record of a governance story. In 2026, that is a risk no board can afford.

::