Slack Overview

  • Year Founded
  • 2009

Year Founded

  • Status
  • Acquired/​Merged

  • Employees
  • 3,500

Employees

  • Latest Deal Type
  • M&A

  • Latest Deal Amount
  • $27.1B

  • Investors
  • 1

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
Corporate Office
  • 50 Fremont Street
  • San Francisco, CA 94105
  • United States
+1 (415)
Primary Industry
Communication Software
Other Industries
Business/Productivity Software
Parent Company
Salesforce
Vertical(s)
CloudTech & DevOps, SaaS, TMT
Corporate Office
  • 50 Fremont Street
  • San Francisco, CA 94105
  • United States
+1 (415)

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Slack Valuation & Funding

Deal Type Date Amount Raised to Date Post-Val Status Stage
16. Merger/Acquisition 21-Jul-2021 $27.1B Completed Generating Revenue
15. IPO 20-Jun-2019 Completed Generating Revenue
14. Later Stage VC 01-Jan-2019 Completed Generating Revenue
13. Later Stage VC (Series H) 21-Aug-2018 Completed Generating Revenue
12. Later Stage VC 26-Jul-2018 Completed Generating Revenue
11. Later Stage VC (Series G) 18-Sep-2017 Completed Generating Revenue
10. Secondary Transaction - Private 10-Jan-2017 Completed Generating Revenue
9. Later Stage VC (Series F) 01-Apr-2016 Completed Generating Revenue
8. Merger/Acquisition 04-Mar-2016 $8B Cancelled Generating Revenue
7. Later Stage VC (Series E) 17-Apr-2015 $160M $347M 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
Series H
Series F1
Series G3
Series G2
Series G1
Series G
Series F
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
3,500 As of 2024

Campbell, CA
 

Walldorf, Germany
 
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Slack Competitors (22)

One of Slack’s 22 competitors is Samepage, a Formerly VC-backed company based in Campbell, CA.

Company Name Financing Status Location Employees Total Raised Last Financing Date/Type Last Financing Amount
Samepage Formerly VC-backed Campbell, CA
SAP Corporation Walldorf, Germany
Zoom Communications Formerly VC-backed San Jose, CA
Cisco Systems Corporation San Jose, CA
Trello Formerly VC-backed New York, NY
You’re viewing 5 of 22 competitors. Get the full list »

Slack Patents

  • 408

    Total Documents Applications and Grants

  • Total Patents Families

  • 371

    Granted

  • 12

    Pending

  • Expiring in next 12 mo

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 Inactive 18-May-2022
US-20230367617-A1 Suggesting features using machine learning Pending 13-May-2022
US-20230344788-A1 Sharing custom history in multi-party direct message Active 20-Apr-2022
US-11848904-B2 Sharing custom history in multi-party direct message Active 20-Apr-2022
US-20230246860-A1 Document management in a communication platform Active 31-Jan-2022 H04L51/224
To view Slack’s complete patent history, request access »

Slack Signals

Growth Rate

Weekly
Growth
Weekly Growth

Size Multiple

Median
Size Multiple

Key Data Points

Similarweb Unique Visitors

Majestic Referring Domains

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Slack Former Investors (86)

Investor Name Investor Type Holding Investor Since Participating Rounds
ACME Capital Venture Capital Minority
ADS Ventures Venture Capital Minority
AME Cloud Ventures Venture Capital Minority
Accel Venture Capital Minority
Aglaé Ventures Venture Capital Minority
You’re viewing 5 of 86 investors. Get the full list »

Slack Investments & Acquisitions (15)

Slack’s most recent deal was a Seed Round with Argmax for . The deal was made on 20-Oct-2024.

Company Name Deal Date Deal Type Deal Size Industry Lead Partner
Argmax 20-Oct-2024 Seed Round Business/Productivity Software
Topo 10-May-2023 Seed Round Business/Productivity Software
Momentum (London) 15-Sep-2022 Seed Round Business/Productivity Software
Café 01-Jan-2022 Accelerator/Incubator Business/Productivity Software
MindLabs 07-Oct-2021 Seed Round Clinics/Outpatient Services
You’re viewing 5 of 15 investments and acquisitions. Get the full list »

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Slack ESG

Risk Overview

Risk Rating

Updated July, 01, 2021

21.03 | Med Risk

Risk Scale

A lower score indicates better sustainability

Negl

0-10

Low

10-20

Med

20-30

High

30-40

Severe

40+

Exposure

Exposure refers to the extent to which a company is exposed to different material ESG issues

Management

Management is related to actions taken to manage ESG issues

Peers Analysis

Peer performance insights compare the company’s ESG performance to the performance of selected peers to help inform future ESG decisions and drive internal performance improvements.

Global

Covered Companies

of 15,125

Rank

Percentile

Software & Services

Industry

of 1,000

Rank

Percentile

Enterprise and Infrastructure Software

Subindustry

of 406

Rank

Percentile

To view Slack’s complete esg history, request access »

Slack Affiliates

Subsidiaries (2)

Name Industry Location Year Founded
Rimeto San Francisco, CA 2016
Slack Fund San Francisco, CA 2016

Slack FAQs

  • When was Slack founded?

    Slack was founded in 2009.

  • Where is Slack headquartered?

    Slack is headquartered in San Francisco, CA.

  • What is the size of Slack?

    Slack has 3,500 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 .

  • What is Slack’s current revenue?

    The current revenue for Slack is .

  • How much funding has Slack raised over time?

    Slack has raised $4.3B.

  • Who are Slack’s investors?

    ACME Capital, ADS Ventures, AME Cloud Ventures, Accel, and Aglaé Ventures are 5 of 86 investors who have invested in Slack.

  • Who are Slack’s competitors?

    Samepage, SAP, Zoom Communications, Cisco Systems, and Trello are some of the 22 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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