Series Funding
Sequential rounds of venture capital investment (Seed, Series A, B, C, and beyond) that fund startup growth in exchange for equity, with each round typically corresponding to specific milestones and company stages.
Venture funding follows a progression aligned with company maturity. Seed ($1-5M) funds proving product-market fit. Series A ($5-20M) funds building a repeatable go-to-market engine. Series B ($15-50M) funds scaling that engine aggressively. Series C and beyond ($50M+) fund market dominance, international expansion, or diversification. Each round dilutes founders by 15-25%.
The milestones expected at each stage have shifted with market conditions, but general benchmarks persist. Series A typically requires evidence of product-market fit (strong retention, growing demand) and some revenue ($0.5-2M ARR). Series B requires a proven growth engine ($5-15M ARR with clear path to scale). Later rounds require demonstration of market leadership and a path to profitability.
For growth teams, the funding stage sets the strategy. Pre-Series A growth is about finding what works (experimentation, scrappy tactics, founder-led sales). Series A growth is about making it repeatable (building processes, hiring specialists, establishing channels). Series B growth is about scaling (multi-channel expansion, international markets, enterprise sales). Understanding your stage helps prioritize the right growth investments and set appropriate expectations.
Related Terms
Growth Loop
A self-reinforcing cycle where each cohort of users generates inputs (data, content, referrals) that attract the next cohort, creating compounding growth.
Churn
The rate at which customers stop using or paying for a product over a given period, typically measured as monthly or annual churn percentage.
Activation Rate
The percentage of new signups who complete a key action (the 'aha moment') that correlates with long-term retention and product value realization.
Product-Led Growth (PLG)
A go-to-market strategy where the product itself drives acquisition, activation, and expansion through self-serve experiences rather than sales-led motions.
Viral Coefficient (K-Factor)
The average number of new users each existing user brings to the product, where a K-factor above 1.0 indicates self-sustaining viral growth.
Net Revenue Retention (NRR)
The percentage of recurring revenue retained from existing customers over a period, including expansion, contraction, and churn — where 100%+ indicates growth without new customers.