Pro rata rights give existing investors the right to invest in future funding rounds to maintain their ownership percentage. If an investor owns 10% and the company raises a new round, pro rata rights allow them to invest 10% of the new round to keep their 10% stake. It is a right, not an obligation. Pro rata rights affect round sizing because existing investor allocations reduce the amount available for new investors.
Pro rata rights let existing investors invest in future rounds to maintain their ownership percentage. This prevents them from being diluted without the option to participate.
For founders, it affects round sizing. If existing investors exercise pro rata, there is less room for new investors.
An investor who owns 10% and has pro rata rights can invest 10% of the next round to maintain their stake.
Pro rata is a right, not an obligation. Investors can choose not to exercise if they are not excited about the terms or the company progress.
Seed investor owns 10%. Series A raises $5M. Pro rata allocation: 10% x $5M = $500k. If they invest $500k, they maintain ~10% ownership.
If the round is oversubscribed and the lead wants more allocation, you may need to negotiate reduced pro rata.
Over-allocating pro rata to seed investors can crowd out Series A lead investors.
Not understanding that some SAFEs include super pro rata (right to invest more than their proportional share).
Granting pro rata to too many small investors makes round management complex.
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