How External Endorsements Actually Sway Startup Investors

19 Oct 2026 · 1 min

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In this brief segment, Leon Eisen, PhD, advises founders to leverage external endorsements—such as former employers who champion them, paying customers, or agencies that award contracts—as credible signals that investors can rely on, rather than relying solely on the pitch or résumé. He emphasizes that these third‑party validations are “voices” investors can borrow, and that founders can actively create new endorsements (e.g., securing a contract or certification) to improve how investors perceive them. Eisen also mentions his "Eisen Fundability Score," an eight‑minute self‑assessment designed to pinpoint where investors might hesitate in a funding round.

Chapters

Ask who outside your company has already put something at stake on you. A former employer who promoted you, a buyer who pays you, an agency that awarded you a contract. Those are other voices an investor can borrow. Your pitch is not one of them. You cannot change your resume by Friday, you can start contract, the certification, or the customer relationship that changes what an investor reads about you. If you want to see where investors will find strange in your round and where they will hesitate, I built the Eisen Fundability Score into an 8-minute self-assessment.