S
Slack
Other B2B Software · San Francisco, United States · Founded 2009 · IPO 2019
Analysis
British diaspora have built $321B of unicorns abroad
Sep 11, 2026
Analysis
The most valuable companies in the British Diaspora Index
Sep 11, 2026
Analysis
British-founded unicorns: 41% built in the US, 47% in the United Kingdom
Sep 11, 2026
Analysis
British founders: $321B of unicorns abroad, $488.4B at home
Sep 11, 2026
News
SecureSky buys London's Soveren to add real-time data security
Sep 9, 2026
Analysis
Revolut is 21% of Index Ventures’ $22.9B in estimated holdings
Aug 30, 2026
Talent graph
Slack's talent
Source: Dealroom Talent Intelligence.
Slack mafia
Startups founded by Slack alumni
Former Slack employees who went on to start their own companies. Sorted by Dealroom signal score.
Advith ChelikaniUnited States
Gary VaynerchukUnited States
Nikhil PaiUnited States
Brexton PhamUnited States
Trent HazyUnited States
Akshay DeoUnited States
Ishan SharmaUnited States
Elaine ZelbyUnited States
Rani S. MavramUnited States
Jon BallUnited States
Brian NgoUnited StatesGlobal footprint
Where Slack has talent and traffic
team presence
across markets
Patent intelligence
$141M patent portfolio · 196 active families
Where Slack concentrates vs peers
Each axis is a top-10 topic across Slack and its closest peers. #1 = 100, #10 = 10, absent = 0.
Source: Dealroom Patent Intelligence · Patsnap. Request a demo for the full per-sub-category breakdown, individual records, and quality-score history.
Capital deployed
Slack's 141 investments and acquisitions.
Every disclosed deal where Slack appeared as a backer or acquirer, 2014–2025. Toggle between venture rounds, M&A, or both. The map below is grouped by the target company's sector — the colored pill on each chip is the round type.
141 deals across Slack's capital deployment.
Where the deals concentrate by sector, stage, and decade.
01 · Deployment strategy vs peers
Where Slack deploys vs peers
Each axis is a Dealroom topic tag — picked from the cluster's most-tagged themes. Values are normalized per axis: the peer with the highest tag-coverage on that axis sits at the edge, others scale relative to them. Toggle between M&A, venture, or both.
02 · Portfolio market map
Slack's portfolio, mapped.
Each chip is one company. Pill colour shows round type — green for Seed, blue for Series A, purple for B/C+, pink for late-stage, amber for M&A. Bigger sectors keep their full list behind “+ N more”.
Market sentiment
What the market is saying about Slack
An AI-synthesized read of the highest-engagement posts about Slack on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.
Reading the room on X — pulling top posts and synthesizing themes…
Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour
See Slack on the full Dealroom platform
Live deal flow, founder pedigree, hiring signals, revenue trajectory, and the full cap table.