Glossary — captable
Pro-rata rights
Pro-rata rights give an existing investor the right (but not the obligation) to maintain their ownership percentage by buying their share of any new financing.
How it works
Pro-rata is the most-fought-over right at seed. Investors want it because it lets them double down on winners; founders push back because it crowds out new lead investors. Most term sheets give pro-rata to all preferred shareholders, capped at the size of their original investment. Major investors (5%+) almost always get pro-rata and often super-pro-rata.