Investor Reference Checking

Investor reference checking is the founder practice of evaluating investors as long-term company partners rather than treating every check as interchangeable. In Yuri Sagalov on AeroFS, YC, Angel Investing, and Wayfinder Ventures, Yuri Sagalov advises founders to ask investors for references, including from companies where the relationship or outcome did not work well.

The source frames the practice as normal and even positive. Asking for references can signal that the founder is thoughtful about governance, pressure, and future hard moments. It also pairs with Sagalov’s own AeroFS story, where he says investors did not force the Redbooth merger and where many AeroFS investors later became LPs in Wayfinder Ventures.

Key Claims

• Investor quality is best judged in difficult periods, not only from successful portfolio companies.
• Reference checking should include downside cases because company-building relationships are tested by misses, delays, pivots, and shutdowns.
• Thoughtful reference requests can improve founder-investor fit rather than insult the investor.
• The practice complements Founder-Investor Learning because good investors should want founders to understand the relationship they are entering.

Connections

• Yuri Sagalov, AeroFS, Redbooth, and Wayfinder Ventures - source case.
• Founder-Investor Learning, Outlier-Driven Angel Investing, and Startup Governance - adjacent investor-quality concepts.
• Founder-Led Sales and Founder Product Fit - founder judgment concepts paired with investor selection.