Brennan Howley, Founding General Partner at 333VC is an active investor based in Boston, Massachusetts. This profile covers what Brennan Howley backs, at which stage, and how founders can reach out in 2026.
Founding General Partner at 333VC and Life Science Venture Partner at VU Venture Partners, driven by identifying and scaling transformative technologies.
Brennan Howley invests in SaaS & Enterprise, Artificial Intelligence and Robotics & Automation, typically at Seed, Series A and Early Stage Venture.
- Investor type
- VC
- Stages
- SeedSeries AEarly Stage Venture
- Invests in
- SaaS & EnterpriseArtificial IntelligenceRobotics & Automation
- Location
- Boston, Massachusetts
- Typical check
- $500K
How to reach Brennan Howley
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About this profile
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Round Funded. "Brennan Howley." Round Funded investor database, updated November 3, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/brennan-howley
Frequently Asked Questions
Who is Brennan Howley?
Brennan Howley, Founding General Partner at 333VC is an active investor based in Boston, Massachusetts. Brennan Howley invests in SaaS & Enterprise, Artificial Intelligence and Robotics & Automation, typically at Seed, Series A and Early Stage Venture.
What does Brennan Howley invest in?
Brennan Howley invests in SaaS & Enterprise, Artificial Intelligence and Robotics & Automation, typically at Seed, Series A and Early Stage Venture. Match your sector and stage, then reach out with a personalized pitch.
What stage does Brennan Howley invest at?
Brennan Howley typically invests at Seed, Series A and Early Stage Venture. Lead with traction that fits the stage when you reach out.
What is Brennan Howley's typical check size?
Brennan Howley typically writes checks around $500K. Use it as a signal for whether your raise fits their stage.
How do founders reach investors like this?
Round Funded lists active investors with verified, professional contact details for signed-up founders. Filter by sector, stage and location, then send a personalized pitch from your own inbox.
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.