All terms
Investment & FinanceStartup Lifecycle
Series A / B / C Financing Rounds
Sequential priced equity rounds in venture-backed companies, typically progressing from product-market validation (A) to scale (B) to growth (C+).
Reviewed by Christian Espinosa, Founder, Blue Goat CyberLast reviewed May 9, 2026
Definition
Series A, B, C, and later rounds are sequential priced equity financings in venture-backed companies. Each Series corresponds to a new class of preferred stock with its own price, liquidation preference, and protective provisions. Series A typically funds product-market validation (in MedTech: feasibility study, IDE planning, early IP), Series B funds pivotal trial execution and regulatory clearance, and Series C+ funds commercial launch and scale. MedTech rounds tend to be larger and longer-spaced than software rounds because of trial timelines and capital intensity.What this means in practice
MedTech-specific dynamics: round timing usually maps to regulatory milestones (IDE, first-in-human, pivotal completion, FDA submission, FDA clearance, first revenue). Strategic investors (Medtronic, J&J, Boston Scientific corporate venture arms) often participate in B/C rounds and may negotiate ROFR or future M&A optionality. Common pitfalls
- •Raising too little at Series A and being forced into a down round when a trial enrollment slips.
- •Optimizing for valuation over investor quality, strong leads pay dividends in later rounds.
Related terms
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Strategic Investor
Corporate investor with operational, not just financial, motives.
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Term Sheet
Non-binding outline of the key economic and control terms of an investment.
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Down Round
Financing at a lower per-share price than the previous round.
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Post-Money Valuation
Company valuation immediately after a financing closes.
Founder & Investor Primer
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Convertible Note
Short-term debt that converts into equity at a future financing round.
Adjacent lesson
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Capitalization Table(Cap Table)
Ledger of all securities issued by a company and who owns them.
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Due Diligence
Investigation of a company before an investment, financing, or acquisition.
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Exit Multiple
Valuation ratio applied at exit, e.g., enterprise value to revenue.
Primary references
3 sourcesLink health: 3 verified· last checked 2026-06-20
NVCA·1SEC·1SVB·1
- 1
NVCA Model Legal DocumentsVerifiedNVCAnvca.org
- 2
SEC, Regulation D Rule 506VerifiedSECsec.gov
- 3
Silicon Valley Bank - Healthcare ReportsVerifiedSVBsvb.com
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