The dynamic data intelligence layer that quietly powers how B2B teams find, score, and reach their next customer.
Every B2B revenue team runs on a database it doesn't fully trust. Contacts change jobs, companies merge, titles inflate, and a quarter of potential revenue can leak out through records that are simply wrong. Leadspace, a roughly 75-person company headquartered at 445 Bush Street in San Francisco, was built to plug that leak. Its platform - now marketed as the GTM Data Intelligence Cloud - unifies buyers, accounts, and buying signals into a single, continuously updated layer that sits underneath the systems sales and marketing teams already use.
Founded in 2007 by Amnon Mishor, who still serves as chief technology officer, Leadspace started from a stubborn premise: that the hardest part of go-to-market isn't the outreach, it's knowing whether the data behind the outreach is real. Nearly two decades later, that premise looks less like a niche and more like the foundation of modern revenue operations. The company describes a data graph capable of hosting billions of relationships and trillions of data points, blending its own intelligence with more than 30 third-party B2B data sources.
What a customer actually gets is deceptively simple. A messy lead comes in. Leadspace enriches it, validates it, matches it to the right account in under 90 seconds, scores it against an ideal customer profile, and hands it back - activated - inside Salesforce, Marketo, or HubSpot. The plumbing is invisible. The result is a pipeline the team can act on without second-guessing the source.
B2B teams have been struggling with fundamental data quality problems for years. Many companies are still using old methods.
- Amnon Mishor, Founder & CTO, LeadspaceThe numbers Leadspace points to are less about vanity and more about waste. It cites that 79% of inbound leads never receive a follow-up, that 546 working hours a year are lost chasing unqualified prospects, and that a quarter of revenue can be forfeited to bad data. Whether or not any single figure is precise, the pattern is familiar to anyone who has watched a well-funded marketing campaign die in a dirty CRM. Leadspace's pitch is that the fix is infrastructure, not effort.
Leadspace sells to enterprise and mid-market B2B revenue teams - the marketers and sellers whose job is to find a small number of right accounts inside a very large market. Its customer roster is notable less for its length than for its names: the company that arguably invented modern CRM is itself a customer.
The company reported doubling its customer base in the two years leading up to its 2021 funding round, and has appeared on the Inc. 5000 list of fastest-growing private companies. For a data-infrastructure business, that growth curve tends to compound: once a revenue team trusts the layer beneath its pipeline, ripping it out is expensive.
The flagship layer that unifies buyers, accounts, and signals into one continuously updated view powering every revenue workflow.
Real-time enrichment and validation of contact and account records, blending Leadspace's graph with 30+ third-party sources.
Discover, segment, score, and activate target accounts with TAM, engagement, and ideal-customer-profile analytics.
Automated matching of inbound leads to the right account in under 90 seconds, with account-contact hierarchy resolution.
AI-driven lead and account scoring combined with intent signals and buying-group mapping to prioritize outreach.
Push enriched, scored data directly into Salesforce, Marketo, HubSpot, and other GTM systems without leaving the workflow.
The B2B data category is crowded and well-capitalized. ZoomInfo wins on sheer contact volume. 6sense and Demandbase lead on account-based intent. Clearbit fits neatly into HubSpot stacks, and Apollo.io undercuts on price. Leadspace's argument is not that it has the most records - it's that it has a data graph that stays current, with the enrichment, matching, and scoring logic to make those records usable in seconds rather than reports.
Forrester lent that argument some weight: in its Q1 2024 Wave for Marketing and Sales Data Providers for B2B, it named Leadspace a Strong Performer, awarded top scores in data discovery, data management, and vision, and noted the company has one of the largest B2B databases in the evaluation.
Category positioning - illustrative, by primary strength
Bars reflect each vendor's most-cited strength from public analyst and review sources, not a ranked benchmark.
Amnon Mishor starts the company with a focus on solving B2B data quality problems at the source.
Leadspace raises $21M to expand its predictive analytics and data platform.
The company acquires marketing-data firm ReachForce, broadening its data footprint.
Jerusalem Venture Partners leads a $46M round as the platform expands into a full B2B customer data platform.
Named a Strong Performer in The Forrester Wave for Marketing and Sales Data Providers for B2B, Q1 2024.
Presbrey, a longtime revenue leader, takes over as Leadspace repositions around its GTM Data Intelligence Cloud.
Appointed in 2025 after serving as chief revenue officer at PebblePost and Centrical. Brings 20+ years of commercial leadership.
Founder and CTO since 2007. The technical architect behind Leadspace's data graph and enrichment engine.
Lead investor since 2021; JVP founder Erel Margalit chairs the board. Roughly $111M raised in total.
Annual contracts priced on data volume, seats, and connected systems, sold to enterprise and mid-market revenue teams.
A cross-border company with engineering heritage in Israel and commercial leadership in the United States.
A focused, roughly 75-person team - small headcount for the size of the databases it manages.
Leadspace is a B2B data intelligence platform that unifies, enriches, and activates buyer and account data so sales and marketing teams can find, score, and reach their ideal customers across CRM and marketing systems.
Enterprise and mid-market B2B revenue teams, including named customers such as Salesforce, Zoom, American Express, RingCentral, Tipalti, and Sovos.
Leadspace was founded in 2007 by Amnon Mishor, who serves as founder and CTO. It is headquartered in San Francisco with engineering heritage in Israel.
Approximately $111M in total, including a $46M growth round led by Jerusalem Venture Partners in February 2021.
Its main competitors include ZoomInfo, 6sense, Demandbase, Clearbit, D&B Rev.Up ABX, Cognism, and Apollo.io.