Oprah Winfrey leaving WeightWatchers board

Former talk show host Oprah Winfrey is leaving WeightWatchers board of directors and donating all of her interest in the company to a museum.

Shares of WW International Inc. tumbled more than 23 percent in Thursday morning trading.

Winfrey, who told People magazine in December that she was using a weight-loss medication, has served on the company’s board since 2015.

She will not stand for re-election at WeightWatchers annual meeting in May.