Amelio, a former Dell executive who led a broad restructuring of Lenovo's worldwide operations, is the second American CEO to step down since Lenovo completed its acquisition of IBM's former PC division in 2004. Amelio's predecessor, Stephen Ward, who became CEO immediately following the acquisition, resigned in late 2005.
Amelio will be replaced as CEO by Yang Yuanqing, Lenovo's chairman.
Rory Read, Lenovo's senior vice president of global operations, will take over as president and chief operating officer.
Lenovo said Amelio resigned because his three-year contract was over. He will remain as an advisor to the company through the end of September, the company said in a filing with the Hong Kong stock exchange.
“Mr. Amelio confirmed that he has no disagreement with the Board and there are no matters in respect of his resignation that need to be brought to the attention of the shareholders of the Company,” the filing said.
Still, Amelio's departure comes at an awkward time. Moments before announcing his resignation, Lenovo reported a quarterly loss of US$97 million that it blamed on slowing Chinese demand for computers.