Ari Stiegler
Managing Partner at Flux Capital
San Francisco, California
Ari Stiegler, Managing Partner at Flux Capital is an active investor based in San Francisco, California. This profile covers what Ari Stiegler backs, at which stage, and how founders can reach out in 2026.
Ari Stiegler leads investment rounds at Flux Capital, focusing on conviction before consensus in sectors like Space, Defense, Robotics, AI, and Fintech.
- Investor type
- VC
- Stages
- Pre SeedSeedSeries A
- Invests in
- Space & AerospaceRobotics & AutomationArtificial IntelligenceFintech
- Location
- San Francisco, California
- Typical check
- $250K
How to reach Ari Stiegler
Angels and operators like Ari Stiegler reply to specific, personalized notes that show real traction, not mass blasts. Build a verified list, write a note that fits their thesis, and track replies, all on Round Funded.
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About this profile
This profile is part of Round Funded, an investor database and outreach platform for founders. It covers 60,000+ active VCs, angels, family offices and accelerators with verified contacts, lets you send pitches from your own Gmail, and includes a free Data Room for your raise.
Frequently Asked Questions
What does Ari Stiegler invest in?
Ari Stiegler invests in Space & Aerospace, Robotics & Automation, Artificial Intelligence and Fintech, typically at Pre Seed, Seed and Series A. Match your sector and stage, then reach out with a personalized pitch.
What stage does Ari Stiegler invest at?
Ari Stiegler typically invests at Pre Seed, Seed and Series A. Lead with traction that fits the stage when you reach out.
What is Ari Stiegler's typical check size?
Ari Stiegler typically writes checks around $250K. Use it as a signal for whether your raise fits their stage.
How do I contact Ari Stiegler?
Unlock Ari Stiegler's verified email on Round Funded and send a personalized pitch. We surface only deliverable contacts so your outreach lands.
What is Round Funded?
Round Funded is an investor database and outreach platform for startup founders. It lists 60,000+ active investors with verified contacts, filtered to recent investment activity, and lets founders send personalized pitches from their own Gmail, track replies, and share a free Data Room. Round+ starts at $99 per month with a 3-day trial.