Slack Overview

  • Year Founded
  • 2009

Year Founded

  • Status
  • Acquired/​Merged

  • Employees
  • 3,440

Employees

  • Latest Deal Type
  • M&A

  • Latest Deal Amount
  • $27.1B

Slack General Information

Description

Developer of a proprietary business communication platform designed to help people communicate better within the organization. The company's platform offers messaging, voice and video calls, workflow builder, file sharing, and other related services, enabling companies to increase efficiency and communication.

Contact Information

Website
www.slack.com
Formerly Known As
Tiny Speck
Ownership Status
Acquired/Merged
(Operating Subsidiary)
Financing Status
Formerly VC-backed
Primary Industry
Communication Software
Other Industries
Business/Productivity Software
Parent Company
Corporate Office
  • 50 Fremont Street
  • San Francisco, CA 94105
  • United States
+1 (415) 000-0000

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Slack Valuation & Funding

Deal Type Date Amount Raised to Date Post-Val Status Stage
21. Merger/Acquisition 21-Jul-2021 $27.1B 00.000 000.00 Completed Generating Revenue
20. IPO 20-Jun-2019 00.000 00.000 000.00 Completed Generating Revenue
18. Later Stage VC 01-Jan-2019 00.000 Completed Generating Revenue
17. Later Stage VC (Series H) 21-Aug-2018 00000 00.000 00.000 Completed Generating Revenue
16. Later Stage VC 26-Jul-2018 00000 Completed Generating Revenue
14. Later Stage VC (Series G) 18-Sep-2017 00000 00000 00.00 Completed Generating Revenue
12. Secondary Transaction - Private 10-Jan-2017 00000 Completed Generating Revenue
10. Later Stage VC (Series F) 01-Apr-2016 00000 00000 00.00 Completed Generating Revenue
9. Merger/Acquisition 04-Mar-2016 $8B 000 Cancelled Generating Revenue
7. Later Stage VC (Series E) 17-Apr-2015 $160M $347M 00.00 Completed Generating Revenue
To view Slack’s complete valuation and funding history, request access »

Slack Cap Table

Stock # of Shares
Authorized
Par Value Dividend Rate ($) Original
Issue Price
Liquidation Liquidation
Pref. Multiple
Conversion Price % Owned
Series H1 0,000,000 00.000000 00.00 000.00 000.00 00 000.00 0.000
Series H 00,000,000 00.000000 00.00 000.00 000.00 00 000.00 0.000
Series F1 0,000,000 00.000000 00.00 00.0 00.0 00 00.0 0.000
Series G3 0,000,000 00.000000 00.00 00.00 00.00 00 00.00 0.000
Series G2 00,000,000 00.000000 00.0 00.0 00.0 00 00.0 0.000
Series G1 0,000,000 00.000000 00.00 00.0 00.0 00 00.0 0.000
Series G 00,000,000 00.000000 00.00 00.0 00.0 00 00.0 0.000
Series F 00,000,000 00.000000 00.00 00.0 00.0 00 00.0 0.000
Series E1 6,046,840 $0.000100 $0.5 $6.28 $6.28 1x $6.28 1.01%
Series E 26,787,204 $0.000100 $0.48 $5.97 $5.97 1x $5.97 4.47%
To view Slack’s complete cap table history, request access »

Slack Comparisons

Description
Primary
Industry
HQ Location
Employees
Total Raised
Post Valuation
Last
Financing
Details
Developer of a proprietary business communication platform designed to help people communicate better within the organiz
Communication Software
San Francisco, CA
3,440 As of 2024
00.000
000.00 0000-00-00
000000&0 00.000

0000

llamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in
00000000000000000000
Cupertino, CA
000 As of 0000
0000
000000 - 000 0000

000000

nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa q
00000000000000000000
Campbell, CA
00 As of 0000
00000
0000 0000-00-00
000000&0 00000
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Slack Competitors (47)

Company Name Financing Status Location Employees Total Raised Last Financing Date/Type Last Financing Amount
Moxo Venture Capital-Backed Cupertino, CA 000 0000 000000 - 000 0000
Samepage Formerly VC-backed Campbell, CA 00 00000 000000&0 00000
LINE Corporate Backed or Acquired Tokyo, Japan 0000 00000 000000&0 00000
Threema Private Equity-Backed Pfaffikon, Switzerland 00 0000000 0000
Allo (Business/Productivity Software) Venture Capital-Backed San Francisco, CA 00 00.000 0000000000 0 00.000
You’re viewing 5 of 47 competitors. Get the full list »

Slack Patents

Slack Recent Patent Activity

Publication ID Patent Title Status First Filing Date Technology (CPC) Citations
US-20230376515-A1 Generating summary documents for communications in a communication platform Pending 18-May-2022 0000000000 00
US-20230367617-A1 Suggesting features using machine learning Pending 13-May-2022 000000000 0
US-20230344788-A1 Sharing custom history in multi-party direct message Active 20-Apr-2022 0000000000
US-11848904-B2 Sharing custom history in multi-party direct message Active 20-Apr-2022 0000000000 00
US-20230246860-A1 Document management in a communication platform Active 31-Jan-2022 H04L51/224 0
To view Slack’s complete patent history, request access »

Slack Executive Team (38)

Name Title Board Seat Contact Info
Stewart Butterfield Co-Founder
Denise Dresser Chief Executive Officer
Cal Henderson Co-Founder & Chief Technology Officer
Serguei Mourachov Co-Founder and Principal Engineer
Jason Spinell Director, Slack Fund
You’re viewing 5 of 38 executive team members. Get the full list »

Slack Board Members (10)

Name Representing Role Since
John Doerr III Kleiner Perkins Board Observer 000 0000
M.G. Siegler GV Board Observer 000 0000
Stewart Butterfield Slack Co-Founder 000 0000
You’re viewing 3 of 10 board members. Get the full list »

Slack Signals

Growth Rate

0.80% Weekly
Growth
Weekly Growth 0.80%, 93rd %
-35.5%. 530%

Size Multiple

219x Median
Size Multiple 219x, 100th %ile
0.00x 0.95x. 413Kx

Key Data Points

Twitter Followers

5.5k

Similarweb Unique Visitors

15.0K

Majestic Referring Domains

314

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Slack Former Investors (88)

Investor Name Investor Type Holding Investor Since Participating Rounds Contact Info
ACME Capital Venture Capital Minority 000 0000 000000 0
ADS Ventures Venture Capital Minority 000 0000 000000 0
AME Cloud Ventures Venture Capital Minority 000 0000 000000 0
Accel Venture Capital Minority 000 0000 000000 0
Aglaé Ventures Venture Capital Minority 000 0000 000000 0
You’re viewing 5 of 88 investors. Get the full list »

Slack Investments & Acquisitions (11)

Company Name Deal Date Deal Type Deal Size Industry Lead Partner
MindLabs 07-Oct-2021 0000 00000 00.000 Clinics/Outpatient Services 00000 000
Woven (Application Software) 30-Apr-2021 0000000000 Application Software
Rimeto 29-Jun-2020 0000000000 000.00 Business/Productivity Software 0000000 0
Aptly 05-Jan-2020 00000 0000 000 Business/Productivity Software
Astro () 24-Sep-2018 Merger/Acquisition 000.00 Business/Productivity Software
You’re viewing 5 of 11 investments and acquisitions. Get the full list »

Slack Subsidiaries (2)

Company Name Industry Location Founded
Rimeto Business/Productivity Software San Francisco, CA 2016
Slack Fund Corporate Venture Capital San Francisco, CA 0000
To view Slack’s complete subsidiaries history, request access »

Slack Exits (1)

Company Name Exit Date Exit Type Exit Size Status Buyers
Sway Finance 05-Jan-2017 000000000 Completed
  • 00000
To view Slack’s complete exits history, request access »

Slack FAQs

  • When was Slack founded?

    Slack was founded in 2009.

  • Who is the founder of Slack?

    Stewart Butterfield, Cal Henderson, Serguei Mourachov, and Eric Costello are the founders of Slack.

  • Who is the CEO of Slack?

    Stewart Butterfield and Denise Dresser are the CEOs of Slack.

  • Where is Slack headquartered?

    Slack is headquartered in San Francisco, CA.

  • What is the size of Slack?

    Slack has 3,440 total employees.

  • What industry is Slack in?

    Slack’s primary industry is Communication Software.

  • Is Slack a private or public company?

    Slack is a Private company.

  • What is the current valuation of Slack?

    The current valuation of Slack is 000.00.

  • What is Slack’s current revenue?

    The current revenue for Slack is 00000.

  • How much funding has Slack raised over time?

    Slack has raised $1.22B.

  • Who are Slack’s investors?

    ACME Capital, ADS Ventures, AME Cloud Ventures, Accel, and Aglaé Ventures are 5 of 88 investors who have invested in Slack.

  • Who are Slack’s competitors?

    Moxo, Samepage, LINE, Threema, and Allo (Business/Productivity Software) are some of the 47 competitors of Slack.

  • When was Slack acquired?

    Slack was acquired on 21-Jul-2021.

  • Who acquired Slack?

    Slack was acquired by Salesforce.

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