The Irish Audit and Accounting Supervisory Authority (Iaasa) said in its latest annual report that all four investigations, launched under the Companies Act 2014, remained ongoing at the end of 2025. The regulator declined to comment on the individual cases.

Iaasa said the activity reflected its statutory role in investigating potential misconduct by auditors, audit firms and professional accountancy bodies, and taking action where necessary to protect the public interest.

The authority, led by chief executive Kevin Prendergast, has the power to impose fines, temporarily prohibit individuals from conducting statutory audits and apply other sanctions.

At the end of 2025, there were 1,012 approved audit firms and 1,781 approved statutory auditors in the Republic.

Since taking direct responsibility in 2016 for inspecting audits of public interest entities, including banks, insurers and listed companies, Iaasa has imposed eight fines on individuals. Five were issued within six weeks in early 2023.

Most penalties have been about €10,500, although a former auditor of the now-defunct Irish arm of Wirecard was fined €19,500 in 2023.

Iaasa also reviewed two complaints concerning how professional accounting bodies handled disciplinary matters, with one case still under consideration at year-end.