Billionaire Heiress Daughter Of Slack Co-Founder Reported Missing

Mint Butterfield , the 16-year-old daughter of billionaire Slack co-founder Stewart Butterfield , is reported missing , police and local officials confirmed this week via the San Francisco Standard .

Caterina Fake , who co-founded Flickr with Mint's father, her ex-husband, initially reported her teenage daughter missing on Monday (April 22) after she was last been seen at 10:00 p.m. on Sunday (April 21) in Bolinas, according to Marin County Sheriff's Office spokesperson Deputy Jose Suarez . The missing teen had been living with her mother and attending a private boarding school in the Napa area at the time of her disappearance, the sheriff's office confirmed.

“Mint was last seen wearing a black sweatshirt, flannel pajama pants, and black boots,” sheriff’s officials said. “They were also possibly carrying a gray suitcase,” Suarez wrote in a statement via NextDoor.com .

Butterfield is, however, suspected to have run away to Tenderloin, a San Francisco neighborhood with a notorious reputation for having the highest levels of crime and homelessness in the city, as well as an open-air drug market. Butterfield is reported to have a history of substance abuse and had frequented the area in the past, according to the San Francisco Standard .

“Please contact Marin County Sheriff’s Office with any information on their whereabouts,” Suarez wrote.

Stewart Butterfield co-founded the popular messaging app Slack in 2013, but departed after it was sold to Salesforce for $28 billion in 2021 and is reported by Forbes to have a net worth of $1.6 billion. Fake founded the imaging service Flickr with her ex-husband and sold the company to Yahoo! for an estimated $30 million in 2004.

The couple was married in 2001, but divorced in 2007, the same year Mint, their only shared child, was born. Stewart Butterfield remarried Away co-founder and CEO Jennifer Rubio in 2020 and relocated to Aspen in 2021, while also owning multiple owns in New York.