Seed VC · Portland

3x5 Partners

Active

What they invest in

Seeks to make venture capital investments in solutions focused on solving real world problems and improving human and environmental health, with focus on breakthrough innovations in healthcare and environment—two intertwined areas affecting human well-being.

Who they back

Climate TechEnergyFood and agritechHealth and femtechSeries ASeries B

Business models

biotech_therapeutics, hardware, deeptech_ip

Customer segments

Enterprise, Researchers

Geography

US

Recent investments

  • Minimally invasive glaucoma surgery (MIGS) company
  • Optical label-free biomarker discovery technology
  • Anti-CD47 antibodies cancer therapy

+ 3 more deals. Score your deck to see the full investment history.

The people who write checks

6 partners on file at 3x5 Partners, with the firm's email pattern for cold outreach. Score your deck (free, 30 seconds) to unlock direct contact for this firm and 47,000+ others.

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Why this firm matters for fundraising founders

3x5 Partners writes first institutional checks where the founder + early product matter more than traction. The seed market is the most dispersed segment of venture; matching to thesis (sector, stage, geography) is where most cold outreach succeeds or fails. VC Boom tracks 3x5 Partners alongside 47,000+ other active investors, ranked weekly by recent-deal momentum, sector concentration, and partner activity.

At a glance

Portfolio last checked
Oct 12, 2026
Website
www.3x5partners.com ↗

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