VC & PE Glossary
What Is Series D?
Updated
Definition
Series D is a very late-stage private financing — typically after Series C — used when companies need more capital for scale, M&A, or runway before IPO, or when public listing timing slips.
Useful for: Founders, Investors
Series D marks the ultra-late private stage — additional growth equity for companies that may have raised hundreds of millions but still choose to stay private.
How it works
Motivations include aggressive expansion, tuck-in acquisitions, competitive wars, or extending runway when IPO windows close. Investors often include existing crossover holders plus new growth funds.
Pricing references public comps even while private — revenue multiples, growth rates, and profitability paths drive negotiation. Structured terms (ratchets, senior preferred) appear if growth slowed since Series C.
Secondaries for employees and early shareholders frequently accompany Series D primaries.
Why it matters
- Founders: Late private rounds can fund strategic moves but add preference overhang. Communicate clearly why more private capital beats going public now.
- Investors: Series D marks feed NAV reporting. Flat or down rounds trigger LP questions and may affect follow-on fund fundraising.
Common mistake
Assuming more late-stage capital always increases employee upside — higher preferences and ratchets can leave common thin in all but the biggest outcomes.
Related ideas
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Common questions
Short answers for founders, LPs, and operators