[Investor First Name],
Thank you for the expression of interest in investing in [Your Company Name].
As you know, we treat our investors as partners -- and we view this as a serious relationship. To that end, our advisory board has asked us to do diligence with prior CEOs you have invested in before we make a commitment.
Could you send us the names of 3 CEOs you have funded -- with ideally at least 1 that did not work out?
With thanks,
[Your Name]