KPMG Australia chairman and senior partners resign after whistleblower scandal

KPMG Australia has lost its chairman and two senior audit partners as a whistleblower scandal over confidential client information moved from an internal compliance problem to a full-blown test of the firm’s credibility. Martin Sheppard, Paul Rogers and Eileen Hoggett are leaving as KPMG tries to stop the damage from spreading through a business built on one asset above all others: trust.

Interim chief executive Stan Stavros called the departures “necessary and immediate” and said KPMG had not met the standards expected of it. That blunt assessment goes to the heart of the case. The allegations are not simply about one bad judgment or a personnel shake-up. They cut at the core of auditor independence, with staff accused of using confidential board papers and other client material to help win audit work.

The scandal has widened beyond the original Lendlease claims. On June 19, Sheppard told a parliamentary hearing that KPMG staff shared unredacted Optus information with another internal team bidding for Telstra’s audit. The Telstra contract ultimately went to Deloitte. That disclosure matters because it confirmed, in public, concerns that KPMG had earlier dismissed as unsubstantiated.

Lendlease chairman John Gillam described KPMG’s conduct as a “fundamental breach of trust,” and the property group was only told about the allegations in May 2025, a year after they were first raised internally. Lendlease has now dropped KPMG as its auditor, ending a relationship that stretched for nearly seven decades. The damage is not just commercial. It signals that a long-standing client no longer believes the firm can police its own boundaries.

The resignations follow a broader leadership reset. Former chief executive Andrew Yates stepped down in May after evidence from an internal law-firm review prompted his exit, and auditing partner Julian McPherson also left. Stavros was appointed interim chief executive, and KPMG now says Sheppard will depart after a short transition while an independent chair replaces him and independent members are added to the Australian board.

Regulators are already circling. The Australian Securities and Investments Commission has begun investigating KPMG partners over the alleged misuse of confidential client information after Senator Deborah O’Neill first raised the matter in the Senate in March. The questions now extend well beyond one firm: how much confidential data was shared, how many bids were affected, and whether existing whistleblower protections and governance structures inside the Big Four are strong enough to stop commercial pressure from overriding professional ethics.

KPMG says it has reported the new Optus-related finding to impacted clients, regulators, professional bodies and the parliamentary committee. It also plans to bring in an ethics consultant to review its “speak-up culture.” But after repeated resignations and a fourth investigation, the firm is fighting a deeper problem than bad headlines. It is fighting the suspicion that the safeguards meant to protect audit independence failed when they mattered most.