Updated August 12, 2026 — 7:25pm,first published 5:55pm

Macquarie Group’s chairman, former Reserve Bank governor Glenn Stevens, has been called to appear before the parliamentary committee looking into the KPMG whistleblower scandal this week and is expected to be grilled over how the firm won its $70 million-a-year audit contract, the biggest in Australia.

Stevens is not the only fresh name called before the committee at this Friday’s hearing. Optus chairman John Arthur and chief executive Stephen Rue are also due to appear at the probe into the spiralling scandal that has purged the most senior ranks at KPMG over the misuse of confidential clients’ information for commercial gain.

KPMG has been accused of improperly using confidential data from its audit work with Optus in a failed attempt to win Telstra’s audit work.

Auditors play a crucial role in the financial markets by signing off on company accounts that are then relied on by investors, including superannuation giants. The process requires absolute integrity given that clients have to expose their most confidential information.