General Info
Location: Boston, Massachusetts
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Investment Stages: pre-seed, seed
angel-individual
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🤖 AI Activity Report
Status: not-found
AI Reasoning: Searches on Greylock’s site and public filings show Don Sullivan is Greylock’s administrative/operations executive but do not show him as an investing partner or list any investments he led. I could not find any public record of Don Sullivan making investments or being named on deals or rounds through 2023-2025. Given absence of any investment activity attributable to him, classify as not-found.
Angel activity thresholds:
Low Activity – Only known angel investments more than 12 months ago.
Active – Known angel investments between the last 12 and 6 months.
Very Active – Known angel investments in the last 6 months.
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