John

Cowgill

Partner

Constanoa
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Cybersecurity, Applied AI

Costanoa’s Guinea Pig Associate
Wayward Kentuckian
Theater School Dropout
Former Consultant
Dad
Willing to pick the right battles

Every investment I make starts with a founder whose conviction in what they are building is contagious.

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My Philosophy: 

The best part of venture is partnering with founders who see the world not as it is, but as it could be….and who are hellbent on making it real. Supporting those kinds of people through the highs, lows, and hard calls is what makes this work so fulfilling.

Early-stage investing is ultimately all about backing people who have put it all on the line to pursue their dream. My role is to be a useful partner through it all and honor the sacrifice founders make when they go for it.

What I value most are founders who mix ambition with humility. People who are obsessed with their craft, learn fast when they’re wrong, and keep pushing when others would quit. Startups are a long game, full of messiness, reversals, and moments that test everyone’s patience. I strongly believe that what defines an early stage investor is how they show up for founders in these crucible moments.

Experience:

I’ve been in venture since 2016 after starting my career in tech startups and consulting. Shortly after joining Costanoa I followed a lifelong interest in cryptography and spycraft into leading the development of our cybersecurity practice. Over the last decade I've had the privilege of partner with 1-2 cybersecurity per year, most either at or near formation, which now cumulatively represent >$3B in market cap and cover almost every domain in cybersecurity.

A Little More About Me: 

The current rotation of hobbies includes cycling, science fiction, 20th century history, and trying (with mixed results) to meditate. The constants are my wife, our two hilarious and high-energy boys (TJ and David), and a few well-loved guitars.

CURRENT INVESTMENT INTERESTS

Agent-Native Incident Response & Recovery, Permission & Governance for AI

Select Costanoa investments