Slack logoCompany profile

Slack

Slack is the enterprise messaging and channel-based collaboration platform now operating as a business unit of Salesforce. Founded in 2009 (originally as Tiny Speck) and headquartered in San Francisco, Slack went public via direct listing on the NYSE in June 2019 and was acquired by Salesforce for $27.7B in July 2021, the largest SaaS acquisition in history at the time.

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Company snapshot

  • Active
  • Delisted
  • Acquired
Total funding
$1.4B
Funding rounds
11
Last round (Acquisition)
$28B
Last round date
Jul 2021
Founded
2009
Employees
1001-5000
Headquarters
San Francisco, California, United States
Last round vs total raised$28B of $1.4B

Founders

Stewart Butterfield, Cal Henderson, Eric Costello, Serguei Mourachov

Industries

  • Enterprise Software
  • Collaboration
  • Messaging
  • SaaS

Notable investors

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InvestorRole
SalesforceCo-investor
AccelLead
Andreessen HorowitzLead
SoftBankLead
T. Rowe PriceCo-investor
IVPCo-investor
Social CapitalCo-investor

Frequently asked questions

Slack has raised $1.4B in total funding across 11 rounds.

Slack's most recent round was a Acquisition of $28B in Jul 2021.

Slack was founded in 2009.

Slack is headquartered in San Francisco, California, United States.

Slack has 1001-5000 employees.

Slack's notable investors include Salesforce, Accel, Andreessen Horowitz, SoftBank, T. Rowe Price, IVP.

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