An angel investor and operator angel based in Seattle, Washington, United States, Andy Sack has 9 known investments: Decent, Inflection.io, MightySignal, Pienza, Reflective, Habit Labs, Zappli, SkillMagic and Me4U.
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Investment focus
- Stage
- Seed
Contacts
Andy Sack portfolio companies (9)
- Decent
- Inflection.io
- MightySignal
- Pienza
- Reflective
- Habit Labs
- Zappli
- SkillMagic
- Me4U
Affiliated funds' portfolios
Investor at Founders Co-op, whose known portfolio counts 10 companies
- Opal
- Paid
- Row Zero
- Aarden AI
- Arkero
- Ravenna
- Caddi
- Certiv
- Logic AI
- Signify
Investor Profile
Andy Sack appears in Seed rounds across the known deals.
Reviewing the investment history helps decide whether there is a realistic fit before reaching out.
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Frequently asked questions
Who is Andy Sack?
Andy Sack is an angel investor and operator angel based in Seattle, Washington, United States with 9 known investments on file, among them Decent, Inflection.io and MightySignal. The sections above list the stages and firms attached to that record.
What stage does Andy Sack invest at?
The known deals of Andy Sack include Seed rounds. Stage is the strongest single filter when you build a target list: an investor with no record at your stage rarely starts with you.
Which firm is Andy Sack listed at?
Andy Sack is listed as Investor at Founders Co-op. 4 other people in the database share a firm with Andy Sack.
How do I contact Andy Sack?
An email address and a LinkedIn page are on file for Andy Sack. The address stays masked on this page and is readable inside RaiseHunt after you create an account. The database holds no phone number for this profile.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal