---
title: Series C - Definition & Examples | RGM® Glossary
url: https://realgrowthmatters.com/glossary/series-c/
updated: 2026-06-10
source_html: https://realgrowthmatters.com/glossary/series-c/
---

Growth Glossary — Definition

SHT SERIES-C

# Series C

Expansion round, typically $40M-$150M+. A working definition from the RGM marketing glossary.

Expansion round, typically $40M-$150M+.

Term
:   Series C

Field
:   Venture Capital

Category
:   Capital & Investing

## What it means

Read that twice.Series C means a capital concept. The value is in a shared, precise definition, not in knowing the word.

Expansion round, typically $40M-$150M+.

As a capital & investing term, Series C means a capital concept. Settle what it covers before the planning starts.

## How it operates

Read that twice.Series C produces value through how it is applied. Change the inputs and the right use of it changes too.

Series C behaves unlike a fixed rule. An early-stage brand and a mature one will apply Series C on different terms. The mechanics follow the inputs around it. Treat Series C as a buzzword and the reporting misleads; agree on it and the numbers hold.

Keep the order simple: define Series C for your context, then decide how to act. Reverse it and the budget chases a number nobody agreed on. Keep this in mind.

## The decisions it touches

Start here.Reach for Series C when a real decision rides on it -- a budget, a metric, or a comparison. Otherwise it is reference.

Bring Series C in when a live choice hangs on it. In capital & investing work, that usually means one of three moments. Away from a decision, Series C is background, not a lever.

1. **Setting budget.** Series C guides the team toward the better-paying line.
2. **Choosing a metric.** Series C tells you if the read reflects real effect.
3. **Comparing options.** Series C evens out a comparison that would otherwise mislead.

## Worked example

Read that twice.The walk-through runs Series C through work modeled on a Bessemer-tracked SaaS firm, so the concept meets real constraints.

Consider a Bessemer-tracked SaaS firm. Running a rule-of-40 screen, the team put Series C at the center of the call. With a clean baseline and one fixed definition of Series C, they read what moved: durable growth separated from cash-burn growth. The discipline is the lesson.

The numbers behind Series C -- illustrative only, RGM analysis

| Stage | What the team did | What it bought |
| Baseline | Read the starting point before any change to Series C. | A reference to judge against. |
| Define | Agreed a single definition of Series C. | A shared definition up front. |
| Act | A rule-of-40 screen — one variable. | Cause and effect, isolated. |
| Result | Durable growth separated from cash-burn growth | A call backed by the read. |

These Series C numbers are illustrative -- RGM analysis. The structure travels; the specific figures do not.

## Pitfalls in practice

Start here.The errors with Series C are predictable: one blanket rule, no context, chasing the word, raw benchmarks. Each is avoidable.

- **No segments.** Treating Series C as one number for all. Break it out before you trust it.
- **No anchor.** Quoting Series C without a starting point. Always pair it with a baseline.
- **Vanity focus.** Gaming Series C instead of the result. Tie it to business value.
- **Raw benchmarks.** Stacking Series C against rivals blind. Normalize for margin, pricing, and sales cycle.

## Frequently asked questions

How is Series C defined?

Expansion round, typically $40M-$150M+. In short, fix that meaning before any tactic is debated.

Why does Series C matter for marketers?

Series C earns its place when it shapes a real decision. The leverage is in correct use, not in the word itself.

Where does Series C get used?

Series C informs a decision -- most often a budget, a metric choice, or a comparison. The a Bessemer-tracked SaaS firm example above shows the pattern.

Where do teams slip up on Series C?

Chasing Series C as a goal and benchmarking it raw. Both bury the real trade-off underneath.

Where can I go deeper on Series C?

The related terms below connect outward; next, read about marketing attribution models, plus CAC payback periods.

How is Series C defined?
:   Expansion round, typically $40M-$150M+. In short, fix that meaning before any tactic is debated.

Why does Series C matter for marketers?
:   Series C earns its place when it shapes a real decision. The leverage is in correct use, not in the word itself.

Where does Series C get used?
:   Series C informs a decision -- most often a budget, a metric choice, or a comparison. The a Bessemer-tracked SaaS firm example above shows the pattern.

### Where to go next

### Related terms