A Facebook post made on Friday, Aug. 9, announced that Former YouTube CEO Susan Wojcicki has died at the age of 56 after battling with cancer.

The post was made by Wojcicki’s husband, Dennis Troper, who revealed the cause of her death. “It is with profound sadness that I share the news of Susan Wojcicki passing,” he said. “My beloved wife of 26 years and mother to our five children left us today after two years of living with non-small cell lung cancer.”