The chief executive of medical centres and pathology firm Primary Health Care, Peter Gregg, has resigned, after the corporate watchdog made allegations that he had breached the Corporations Act.
Primary said late on Friday that the board had accepted Mr Gregg's resignation.
But Mr Gregg will remain in his role until the company finds a new chief executive.
"Mr Gregg has successfully led Primary through a significant period of change and transformation over the past two years," Primary said in a statement after the share market had closed.
"The board has the utmost confidence that Mr Gregg will continue to undertake his duties at Primary to the best of his ability and in the best interests of the company."
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Primary chairman Rob Ferguson said the Primary board had great respect for Mr Gregg and said he had done an excellent job as CEO.
The Australian Securities and Investments Commission (ASIC) alleges Mr Gregg twice breached the section of the Corporations Act relating to falsification of books while at Leighton in 2011, and he will appear in Sydney's Downing Centre Local Court on January 31.
Primary had notified the Australian share market on January 10 that Mr Gregg had been served with a local court attendance notice by ASIC.
Mr Gregg will face charges of falsifying accounts during his time as an executive at construction firm Leighton Holding.
In a statement issued by his lawyers, Mr Gregg has denied that he breached any civil or criminal law, and said he will be seeking to have the notice heard as a matter of urgency.
Mr Gregg served as deputy chief executive officer and chief financial officer at Leighton between 2009 and 2013, and was appointed Primary Health Care chief executive in 2015.
