How Much Did Slack Raise? Headquarters, Funding & Key Investors

Slack raised over $1.38B across multiple rounds, including a major $427M Series H (2018) led by Dragoneer and General Atlantic, $412.7M Series G (2017) led by SoftBank Vision Fund, and earlier rounds like $208M Series F, $172.7M Series E, $110.8M Series D, and $42.8M Series C. It also secured $863M Post-IPO financing in 2020, strengthening its cash position ahead of its Salesforce acquisition. With investors such as Accel, Andreessen Horowitz, and Google Ventures, Slack became one of the largest enterprise collaboration unicorns, eventually reaching a $23B valuation.

How Much Did Slack Raise? Funding & Key Investors

Slack is a cloud-based team collaboration platform offering real-time messaging, channels, file sharing, AI-powered search, and workflow automation. It integrates with thousands of tools like Google Drive, Salesforce, Zoom, and GitHub, enabling seamless communication across businesses of all sizes.

Their features include enterprise-grade security, role-based access controls, and intelligent productivity tools.

What Is Slack and What Does It Do?

Slack, founded in 2009 by Cal Henderson, Eric Costello, Serguei Mourachov, and Stewart Butterfield, is headquartered in San Francisco, United States. The company provides a cloud-based communication and collaboration platform for teams, offering channels, messaging, video calls, file sharing, and deep app integrations.

Slack employs 1,820 employees, delivering a unified digital workspace where teams can collaborate, automate workflows, and streamline project communication.

The platform supports enterprise-grade features, admin controls, AI-enhanced search, summarization, and productivity agents, making it a central hub for modern workplace operations.

How Much Funding Has Slack Raised?

1. Series B

Amount Raised: $10.7M
Date: April 2011
Lead Investors: Accel, Andreessen Horowitz
Motivation: To expand product development and scale engineering operations.

2. Series C

Amount Raised: $42.8M
Date: April 2014
Lead Investors: Social Capital
Motivation: To enhance platform features and accelerate customer acquisition.

3. Series D

Amount Raised: $110.8M
Date: October 2014
Lead Investors: Google Ventures, Kleiner Perkins
Motivation: To support infrastructure needs and expand globally.

4. Series E

Amount Raised: $172.7M
Date: April 2015
Lead Investors: Social Capital
Motivation: To drive international expansion and product innovation.

5. Series F

Amount Raised: $208M
Date: April 2016
Lead Investors: Thrive Capital
Motivation: To develop new features and improve user experience.

6. Series G

Amount Raised: $412.7M
Date: September 2017
Lead Investors: SoftBank Vision Fund
Motivation: To scale operations, strengthen enterprise offerings, and prepare for IPO.

7. Series H

Amount Raised: $427M
Date: August 2018
Lead Investors: Dragoneer Investment Group, General Atlantic
Motivation: To maximize market valuation and build financial resilience.

8. Post IPO

Amount Raised: $863M
Date: April 16, 2020
Motivation: To strengthen its financial position ahead of increased enterprise demand.

Total Funding Raised: $1.38 Billion

Current Valuation: $23 Billion (as of June 2019)

Latest Funding Date: April 2020

Key Investors

1. Dragoneer Investment Group

Details: Growth-oriented investment firm backing high-performing technology companies.
Investment Focus Areas: Technology, consumer, and financial services.
Notable Investments: Airbnb, Uber, Spotify.

2. General Atlantic

Details: Global growth equity firm backing transformative leaders worldwide.
Investment Focus Areas: Technology, consumer, healthcare, and financial services.
Notable Investments: ByteDance, Alibaba, Snapchat.

3. SoftBank Vision Fund

Details: One of the world’s largest technology investment funds.
Investment Focus Areas: Telecommunications, AI, enterprise software, robotics.
Notable Investments: ARM, Uber, WeWork.

4. Accel

Details: Silicon Valley VC firm backing early and growth-stage startups.
Investment Focus Areas: Enterprise software, consumer internet, security.
Notable Investments: Facebook, Slack, Atlassian.

5. Andreessen Horowitz

Details: Influential venture capital firm known for bold bets on disruptive technologies.
Investment Focus Areas: Software, AI, fintech, healthcare.
Notable Investments: Airbnb, GitHub, Coinbase.

Where Is Slack’s Headquarters?

Slack is headquartered in San Francisco, California, a major global hub for enterprise SaaS, talent-rich engineering ecosystems, and software innovation. Its location supports access to world-class technical talent and strategic proximity to leading technology partners.

What’s Next for Slack?

Now operating under the Salesforce ecosystem, Slack is expanding its role as the AI-powered productivity hub for enterprises. Its roadmap includes deeper integrations within Salesforce, enhanced AI summarization tools, workflow automation, and enterprise security upgrades. With Salesforce’s backing, Slack aims to become the central operating system for enterprise collaboration worldwide.

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