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    Global · Global

    Pro Rata Rights

    Also called: Pro-rata, Participation rights

    TL;DR

    The right of an existing investor to participate in future rounds at a level that maintains their current ownership percentage.

    Pro rata rights let an existing investor 'follow on' in future rounds in proportion to their current ownership, defending against dilution. They are a standard term in priced rounds for major investors and increasingly common in SAFE side letters at the seed stage.

    For founders, pro rata is double-edged. It rewards loyal early investors and helps fill future rounds, but it crowds out new investors who want larger allocations and can complicate signaling if a major prior investor declines to participate.

    Worked example

    Lead investor invested $5M for 20% in Series A. At Series B ($30M raise at $120M pre / $150M post), pro rata lets them invest $30M × 20% = $6M to maintain 20%. Without pro rata, they'd dilute to 16% post-B.

    Common pitfalls

    • Granting pro rata to too many small investors and crowding out future leads.
    • Letting silent pro rata holders block competitive future rounds.
    • Failing to enforce pro rata waiver letters when investors don't participate.

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