Toshiba Corp. is set to gain partial approval from its auditor for its fiscal 2016 financial results and submit the report by the Thursday deadline, sources close to the matter said.

Auditor PricewaterhouseCoopers Aarata LLC will issue an "opinion with qualifications" for Toshiba's annual earnings report, which means the results are deemed fairly presented in general but contain minor problems.

However, the auditor will issue an "adverse opinion" on Toshiba's internal controls because the company overlooked massive losses related to its now-bankrupt U.S. nuclear unit, the sources said.