Yahoo chief executive Scott Thompson says he is sorry for allowing an inaccuracy about his education to appear in his official biography, but not remorseful enough to heed calls for his resignation.
In a memo sent overnight to the troubled internet company's employees, Mr Thompson apologised for the uproar caused by the misinformation.
Yahoo provided a copy of the memo to The Associated Press.
The memo didn't offer any explanation why Mr Thompson's bio has periodically listed a bachelor's degree in computer science that he never received.
Mr Thompson's note of contrition came on the same day that an activist hedge fund that owns a 5.8 stake in Yahoo escalated its effort to oust the chief executive for unethical conduct.
Yahoo's board is investigating the circumstances that led to the exaggeration about Thompson's education.