# Series B Companies in the US

> 3,300+ US companies at Series B stage — post-product-market-fit, scaling teams, and actively building out their GTM stack

**Source:** https://gtm.ai/marketplace/series-b-companies-us

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## Overview

Series B companies have achieved product-market fit and are scaling into repeatable revenue. They have dedicated sales and marketing teams, a defined ICP, and real software budgets — but they're still evaluating and replacing tools as they move from startup infrastructure to enterprise-grade systems. This audience captures 3,300+ US Series B companies with verified funding data, tech stack detection across GTM functions, and C-suite and VP-level contacts.

## What's Included

- **Company Identity**: Verified name, primary domain, and US headquarters location
- **Funding Event**: Series B round size, close date, and lead investor
- **Board Composition**: Known board members and investor representatives where available
- **Headcount**: Current employee count with department-level breakdown and 1-year growth rate
- **Tech Stack**: Detected tools across CRM, sales engagement, marketing automation, and data infrastructure
- **Executive Contacts**: Verified email and phone for C-suite, VP of Sales, VP of Marketing, and VP of Engineering

## Use Cases

### Growth-Stage SaaS Sales
Series B companies are in active replacement mode — swapping point solutions for platforms, replacing founders' tools with enterprise-grade systems. Tech stack data identifies which incumbents are in place and which categories are still unsolved.

### Revenue Tech Stack Expansion
CRM, sales intelligence, revenue operations, and enablement vendors should prioritize this audience. Series B companies are formalizing their GTM motion for the first time and are evaluating vendors in every category of the modern revenue stack simultaneously.

### VC and Growth Equity Sourcing
Growth equity investors and crossover funds can use this audience to identify Series B companies ahead of their Series C process. Filter by growth rate, industry, and round size to surface companies that fit specific investment theses.

### Strategic Partnership Development
Series B companies are actively seeking distribution partners, technology integrations, and co-sell relationships to accelerate revenue without adding headcount. Use tech stack overlap and product category to identify natural partner candidates.