Slack Technologies controversies
Controversies tied to this brand in public sources. A listing is not a finding of fault.
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2020
European antitrust complaint against Microsoft
Slack complained to the European Commission that Microsoft unlawfully bundled the competing Teams product with Microsoft’s office-software suite. The complaint framed Slack’s competitive concern around distribution leverage and the tying of collaboration software to a widely adopted productivity subscription.
2020
Investor securities litigation over the direct listing
Investors filed class-action litigation alleging that Slack’s direct-listing registration materials contained material misstatements or omissions. The dispute eventually reached the U.S. Supreme Court in Slack Technologies, LLC v. Pirani, which addressed whether a Securities Act plaintiff must trace purchased shares to the challenged registration statement.