SUNNYVALE, Calif. — Yahoo Inc. director Maggie Wilderotter plans to step down from the slumping Internet company's board at the end of this year. The resignation will leave Yahoo with 11 directors.

The Sunnyvale-based company said Friday that Wilderotter is leaving to devote more time to her other responsibilities. Wilderotter is CEO of Frontier Communications Corp., which sells telephone, television and Internet services.

Wilderotter joined Yahoo's board in 2007, a few month after she left an executive job at Microsoft Corp. She has been overseeing Yahoo's audit committee.

Like other Yahoo directors, Wilderotter came under fire last year for the handling of a takeover bid from Microsoft. The software maker withdrew a $47.5 billion offer in May 2008 after Yahoo's board authorized co-founder Jerry Yang to demand more money.