Regulators reportedly probe Slack’s New York Stock Exchange debut as part of broader IPO inquiryGeekWire • 12/23/19
Slack CEO: Microsoft Teams Will Soon Hit 100 Million Users but We Don't CareThe Motley Fool • 12/06/19
Slack's Blockbuster Earnings Show Why the Threat From Microsoft Might Be OverblownThe Motley Fool • 12/05/19
Slack CEO shrugs off Microsoft Teams’ rapid growth, trumpets big Office 365 customers winsGeekWire • 12/05/19
Slack Technologies, Inc. (WORK) CEO Stewart Butterfield on Q3 2020 Results - Earnings Call TranscriptSeeking Alpha • 12/05/19
Slack CEO says Microsoft Teams has 'weak engagement' and he expects more users to migrate overCNBC • 12/04/19