Fund Structure
Follow-On Investment
An additional investment made by an existing investor in a later funding round of a portfolio company — to maintain ownership, signal conviction, or support growth.
A follow-on investment (also called a follow-on round or pro-rata investment) is when an existing investor participates in a subsequent funding round of a company they've already backed. Follow-ons serve multiple purposes: maintaining ownership percentage (avoiding dilution), signaling conviction to new investors, and providing additional capital to a performing company.
Most VC term sheets include pro-rata rights — the right (but not the obligation) to participate in future rounds up to the investor's percentage ownership. Exercising pro-rata rights is the primary mechanism for follow-on investing. In hot markets, pro-rata rights become valuable; in slower markets, investors may decline to follow on even if they have the right.
A fund that declines to follow on in a portfolio company sends a negative signal to the market — new investors pay close attention to whether existing investors are participating.
In Practice
A seed fund invested $500K for 10% of a company at a $5M post-money valuation. At Series A ($30M post-money), the fund exercises its pro-rata to invest $750K, maintaining its 10% ownership. This is a follow-on investment that prevents dilution and signals continued confidence.
Why It Matters
Whether an existing investor follows on is one of the most important signals in a fundraise. New investors use existing investor follow-on decisions as a key diligence input — 'if the people with the most information chose not to invest more, why should I?' Founders should understand their investors' follow-on philosophy and fund reserves before taking initial checks.