/People

Garrett Gilbertson

Investor

Managing Partner at Sum Ventures

Hermosa Beach, California, United States

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About

Managing Partner of SUM Ventures and Chairman of the Band of Angels Los Angeles. An entrepreneur, investor, and former USAF Captain and Afghan War veteran who previously led investments for family offices, angel groups, and corporate venture funds across aerospace/defense, gaming, consumer, life science, proptech, and fintech. Holds a B.Sc. from the US Air Force Academy and an M.Sc. from Pepperdine.

Invests in

AI & Machine LearningClimate TechFintechHealthtechPropTech

Experience

  1. SUM VenturesFounder & Managing Partnercurrent2016 — presentLos Angeles, California, United States
  2. Band of AngelsChairman, Los Angeles Groupcurrent2017 — presentMenlo Park, CA
  3. Wilder Systems RobotsSeed Investorcurrent2026 — present
  4. Purple RhombusSeed Investorcurrent2025 — present
  5. Vectorial AIPre-Seed Investorcurrent2026 — present
  6. Matthew Berry's Fantasy LifeSeed Investor & Advisorcurrent2024 — present
  7. BRIUS®Pre-seed - Series A investor & Board Membercurrent2019 — presentLos Angeles Metropolitan Area
  8. Hellbender Inc.Seed Investorcurrent2026 — present
  9. PlantSwitchSeed and Series A Investorcurrent2023 — present
  10. RootSeed Investorcurrent2026 — present
  11. Purlin Co.Pre-Seed and Seed Investor & Board Membercurrent2020 — present
  12. PayAmigoPre-Seed and Seed Investorcurrent2023 — present
  13. DressXPre-Seed - Series A Investor, Advisor & Board Observercurrent2020 — presentLos Angeles Metropolitan Area
  14. AutomotusPre-Seed and Seed Investor & Advisorcurrent2020 — present
  15. AssistMeSeed Investorcurrent2026 — present
  16. ClearClubPre-Seed and Seed Investor & Board Membercurrent2021 — present
  17. IrriGreenPre-Seed- Series A Investor & Advisorcurrent2019 — present
  18. UNestPre-Seed Investor & Board Chairmancurrent2019 — presentLos Angeles Metropolitan Area
  19. Ovation VenturesPre-seed -Seed Investor & Advisorcurrent2021 — present
  20. geCKo MaterialsSeed Investorcurrent2025 — present

Skills & more

Government80Defense34Entrepreneurship35Startup Marketing13Venture Capital14Start-ups24Financial Modeling9Military22Management Consulting9Marketing Strategy13Early-stage Startups6Fundraising6
+10 moreBusiness StrategyLean StartupAgile MethodologiesFinancial ProjectionAir ForceGrowth HackingGovernment ContractingNew Business DevelopmentManagementLeadership
  • Venture Capital — CFA Institute
  • Defense Acquisition University Level I Contracting — Defense Acquisition University
  • Certified ScrumMaster — Scrum Alliance
  • Certified Scrum Product Owner — Scrum Alliance
  • Defense Acquisition University Level II Contracting — Defense Acquisition University

From Garrett's professional profile.

Colleagues at Sum Ventures

Frequently asked questions

Who is Garrett Gilbertson?
Managing Partner of SUM Ventures and Chairman of the Band of Angels Los Angeles. An entrepreneur, investor, and former USAF Captain and Afghan War veteran who previously led investments for family offices, angel groups, and corporate venture funds across aerospace/defense, gaming, consumer, life science, proptech, and fintech. Holds a B.Sc. from the US Air Force Academy and an M.Sc. from Pepperdine.
Where does Garrett Gilbertson work?
Garrett Gilbertson is Managing Partner at Sum Ventures.
What does Garrett Gilbertson invest in?
Garrett Gilbertson invests in AI & Machine Learning, Climate Tech, Fintech, Healthtech, PropTech.
Where did Garrett Gilbertson go to school?
Garrett Gilbertson studied at Harvard Business School Executive Education (Venture Capital & Private Equity); United States Air Force Academy (Bachelor of Science (BS), Business Management); Pepperdine University (MS Entrepreneurship, Business).

Same school

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