An existing investor’s right to put more money into future rounds to keep their percentage. Valuable to investors and worth counting for founders, since it reduces the room available to new ones.
Why it matters
Pro-rata rights let an investor who is already on the cap table put in more money at the next
round specifically to keep their existing percentage from shrinking, rather than being diluted like
everyone else. For the investor holding the right, it is a valuable option: they get to defend a
stake in a company they already believe in without having to renegotiate for the privilege each
time. For a founder planning a future round, it is worth tracking early, because every pro-rata
right exercised reduces the room actually available to new investors in that round.
How it works
Pro-rata is typically granted in the terms of an earlier investment — often to investors who put
in a meaningful cheque, sometimes only above a stated size — and it usually applies to some or all
future priced rounds, not to convertible instruments raised in between.
When a new round is being raised, existing investors with pro-rata rights are generally given the
opportunity to invest enough to maintain the percentage they already held before the round, ahead
of or alongside new investors being brought in. If several early investors all exercise the right
at once, the amount of the round actually open to new money can shrink considerably, which matters
to a founder trying to bring in a new lead or a strategic investor for the round.
Not every investor with a pro-rata right chooses to use it every round — some sit out a round they
are less enthusiastic about, which effectively dilutes them the way it would any other
shareholder.
Questions people ask
- What are pro-rata rights in a funding round?
- Pro-rata rights let an existing investor invest additional money in a future round specifically to maintain the ownership percentage they already held, rather than being diluted at the same rate as shareholders without that right. The right is granted in an earlier investment’s terms and typically applies to subsequent priced rounds.
- How do pro-rata rights affect a founder raising a new round?
- Every existing investor who exercises pro-rata reduces the amount of the new round actually available to incoming investors, since that portion is reserved for maintaining the earlier investor’s percentage. A founder planning a round with a new lead should account for how much pro-rata capacity existing investors are likely to use.
- Do all investors with pro-rata rights always use them?
- No. An investor holding pro-rata rights can choose not to invest further in a given round, in which case their percentage dilutes the same way it would for any shareholder without the right. The right is an option to defend a stake, not an obligation to keep exercising it every round.
See also
More in Fundraising
- Bridge round — A short raise meant to carry the company to a larger round or to an exit.
- Convertible note — A loan that is expected to convert into shares at a future round instead of being repaid.
- Dilution — The reduction in an existing shareholder’s percentage when new shares are issued.
- Lead investor — The investor who sets the terms, does the deepest diligence and usually takes the largest share of a round.
- Pre-money and post-money — Pre-money is what the company is agreed to be worth before new investment; post-money is that plus the money invested.
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Updated 2026-09-09