


Employees at Medallia rank Mark Bishof in the Bottom 45% of CEOs in San Francisco. Comparatively, employees at Slack rank Stewart Butterfield in the Top 5% of CEOs in San Francisco. Employees rate their CEO differently based on the frequency of interaction, ability to affect company culture, and drive measurable results.

Women at Medallia rated their CEO a C+

Women at Slack rated their CEO an A+

Diverse Employees at Medallia rated their CEO a B+

Diverse Employees at Slack rated their CEO an A

Not Enough Data



At Medallia, employees in the Sales department rate Mark Bishof the highest. According to employees, Mark Bishof's ability to drive business results is Excellent. At Slack, the Customer Support department's employees rate their CEO highest. And, 86% of Slack's employees approve of their CEO's management style.