Mary Ritti, VP-communications at social media's Snap Inc. since 2013, is leaving the troubled company by the end of the year.
She will remain on the board of the Snap Foundation, a nonprofit focused on art and education programs for disadvantaged youth, and participate in the search for her replacement.
Ritti did an eight-year stint at Burson-Marsteller before joining Snap, which bills itself as a "camera company," as one of its first employees
Snap's initial public offering in 2014 at $17 per-share was the largest since the market debut of China's high-flying Alibaba Group Holdings.
Shares surged 44 percent on the first day, but have since plummeted to an all-time low today of $8.40.
Snap lost $739M during the first half of 2018 on revenues of $493M.