Pro Rata Side Letter (Singapore) by Y Combinator

Updated 4 October 2025

The Pro Rata Agreement gives investors the right to purchase their proportional share of equity in future financing rounds, ensuring they can maintain ownership when a SAFE converts. It defines the scope, termination triggers, and assignment rights tied to the investor’s post-money SAFE. This agreement is part of the trusted set of financing documents commonly used with Y Combinator’s SAFE framework.

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