Funding rounds & stages · Core
Series B
Also called: Series B round
ELI5
Funding to scale a business with stronger proof.
Used in conversation
“The Series B will expand enterprise sales internationally.”
Definition
A later venture round commonly used to expand proven go-to-market, product or geographic scale.
Here “Series B” means: A later venture round commonly used to expand proven go-to-market, product or geographic scale.
Pitch context
You will see “Series B” in fundraising decks, data rooms, term sheets and investor conversations when the discussion reaches funding rounds & stages.
Why it matters: In funding rounds & stages, a loose definition can change rights, obligations, approval, disclosure or enforceability.
Caution
Meaning, enforceability and required process vary by jurisdiction and agreement; this definition is not legal advice.
Sources & evidence · 8
Direct term-level sources and supporting source families.
- U.S. Securities and Exchange Commission — Regulation CrowdfundingDirect source · primary · checked 2026-08-16
- U.S. Securities and Exchange Commission — Regulation ADirect source · primary · checked 2026-08-16
- U.S. Securities and Exchange Commission — Regulation D and exempt offering pathwaysDirect source · primary · checked 2026-08-16
- U.S. Securities and Exchange Commission — Small Business Capital Formation GlossaryDirect source · primary · checked 2026-08-16
- U.S. Securities and Exchange Commission — Exempt OfferingsSupporting source family · primary · checked 2026-08-16
- National Venture Capital Association — Model Legal DocumentsSupporting source family · institutional · checked 2026-08-16
- Y Combinator — Safe financing documentsSupporting source family · practitioner · checked 2026-08-16
- Y Combinator — Series A Term Sheet TemplateSupporting source family · practitioner · checked 2026-08-16