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Fundraising & equity

Pro rata rights

Also known as Pro rata participation rights

Pro rata rights let an existing investor buy enough of a future round to keep their ownership percentage from shrinking.

Updated July 2026

Key takeaways

  1. Pro rata rights let an existing investor buy enough of a future round to keep their ownership percentage from shrinking.
  2. Pro rata rights sound harmless, but they hand a slice of every future round to existing investors before you can offer it to new ones.

What is pro rata rights?

Pro rata rights let an existing investor buy enough of a future round to keep their ownership percentage from shrinking. If they own 10% and you raise a new round, they can invest enough to stay at roughly 10% instead of getting diluted. It's a contractual right, usually negotiated into the term sheet.

Worked example

A seed fund that wrote your first $500K check exercises its pro rata right to invest again in your Series A, holding its ownership steady.

Why it matters for fast-growing companies

Pro rata rights sound harmless, but they hand a slice of every future round to existing investors before you can offer it to new ones. That can crowd out a hot lead who wants more of the round. Track exactly who holds these rights so your next raise doesn't get awkward.

Frequently asked questions

Do pro rata rights obligate the investor to invest again?+
No. Pro rata is a right, not an obligation. The investor can participate in the next round to hold their percentage, but they can also pass and let themselves be diluted. Founders sometimes ask investors to waive unused pro rata rights so a new lead can take more of the round.
Who typically gets pro rata rights?+
Usually your larger early investors, lead investors and major funds, negotiate them into the term sheet or a side letter. Smaller angels and SAFE holders often don't get them unless they clear a 'major investor' threshold. Later rounds may grant them more broadly and supersede the earlier terms.

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