Pro-rata rights (also called pre-emptive rights or follow-on rights) are one of the most valuable provisions an early investor can negotiate. They give investors the option — but not the obligation — to invest in subsequent rounds at the same terms as new investors.
How pro-rata rights work
If an investor owns 5% of a company and the company raises a new round, pro-rata rights allow that investor to purchase enough shares in the new round to maintain their 5% ownership. Without pro-rata rights, the investor's percentage would be diluted by the new shares issued.
Example
- Company has 10M shares outstanding; investor owns 500K shares (5%)
- Company raises a Series A and issues 2M new shares (total: 12M)
- Without pro-rata: investor now owns 500K / 12M = 4.17% (diluted)
- With pro-rata: investor can buy 100K new shares to maintain 5%
Super pro-rata rights
Some investors negotiate super pro-rata rights — the right to invest *more* than their proportional share in future rounds. These are aggressive terms that later-stage lead investors often push back on.
Why pro-rata rights matter
For seed investors, pro-rata rights are critical for fund economics. If a seed investor writes a $250K check into a company that becomes a $500M outcome, the ability to follow-on in the Series A and B can 5–10x their total return versus being diluted down.
2026 market norms
Pro-rata rights are standard for institutional seed investors and most angel investors writing checks above $25K. They are typically capped at the investor's ownership percentage and expire if not exercised within the round's closing deadline.