Underwood joined Slack, the provider of workplace communication tools, in 2015 as its head of platform after a five-year stint as Twitter’s director of product. She was promoted to the chief product role about 10 months ago. Underwood is also a founding partner of #Angels, an investment collective that pushes to get more women on startup cap tables.
In a Medium post announcing her departure from Slack, Underwood said she planned to focus on investing full time.
“One common story you hear when you talk to founders is that their idea ran as a background process for many years until it moved into the foreground and became a calling too loud to ignore,” Underwood wrote. “And now, I can truly empathize with founders — because that’s happened for me. Investing, which started as a side hustle for me and my #Angels partners, has emerged as the pursuit too inspiring and energizing to be relegated to my spare time.”
During her tenure, Underwood had a hand in crafting Slack’s investment fund — a pool of capital supported by Accel, Index Ventures, KPCB, Social Capital, Andreessen Horowitz and Spark Capital that has invested in 49 projects building on top of Slack to date.
Slack, led by founder and chief executive officer Stewart Butterfield, is said to be preparing for a direct listing, meaning it will go public without listing any new shares, with no lockup period and no intermediary bankers. Valued at roughly $7 billion, Slack has raised more than $1 billion to date from GV, IVP, T. Rowe Price, SoftBank, Kleiner Perkins, Accel and others.
Slack did not immediately respond to a request for comment.