


Employees at Opal rank Steve Giannini in the Top 30% of CEOs in Portland. 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.

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Women at Slack rated their CEO an A+

Diverse Employees at Opal rated their CEO a C-

Diverse Employees at Slack rated their CEO an A




At Opal, employees in the Engineering department rate Steve Giannini the highest. According to employees, Steve Giannini'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.