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.
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
Founders
Stewart Butterfield, Cal Henderson, Eric Costello, Serguei Mourachov
Industries
- Enterprise Software
- Collaboration
- Messaging
- SaaS
Notable investors
| Investor | Role |
|---|---|
| Salesforce | Co-investor |
| Accel | Lead |
| Andreessen Horowitz | Lead |
| SoftBank | Lead |
| T. Rowe Price | Co-investor |
| IVP | Co-investor |
| Social Capital | Co-investor |
Frequently asked questions
How much funding has Slack raised?
Slack has raised $1.4B in total funding across 11 rounds.
What was Slack's most recent funding round?
Slack's most recent round was a Acquisition of $28B in Jul 2021.
When was Slack founded?
Slack was founded in 2009.
Where is Slack headquartered?
Slack is headquartered in San Francisco, California, United States.
How many employees does Slack have?
Slack has 1001-5000 employees.
Who are Slack's investors?
Slack's notable investors include Salesforce, Accel, Andreessen Horowitz, SoftBank, T. Rowe Price, IVP.