https://www.cnbc.com/2018/08/29/sheryl-sandberg-to-donate-her-10percent-stake-in-surveymonkey.html

Facebook's Sheryl Sandberg joined the board of SurveyMonkey in 2015, shortly after her husband and the company's CEO, Dave Goldberg, died suddenly while on vacation in Mexico. Sandberg, who now owns 9.9 percent of the company, is giving it all to charity.

"Ms. Sandberg plans to donate all shares beneficially owned by her (or the proceeds from the sale thereof) to the Sheryl Sandberg and Dave Goldberg Family Foundation as part of fulfilling their philanthropic commitment to the Giving Pledge," SurveyMonkey said in its IPO filing on Wednesday.