ABOUT THE FIRM
Built on conviction,
Driven by outcomes.
Northbrook Fund was founded on a simple belief: the best returns come from deep partnership, not portfolio diversification. We are a concentrated, operationally engaged investment firm and we intend to stay that way.
WHAT WE STAND FOR
Three principles guide every decision.
These aren't values written on a wall. They're the operating system behind every investment decision, every board meeting, and every conversation we have with founders.

OUR STORY
A firm built to
do this right.
Northbrook Fund was established in 2014 with a thesis that ran counter to the prevailing wisdom: that more deals meant better returns. We believed the opposite. A smaller, more deliberate portfolio backed by genuine operational engagement would outperform a spray-and-pray approach over any meaningful time horizon.
A decade later, our portfolio companies have collectively reached $2.1B in combined valuation, with zero failures across three funds. That record is not an accident. It is the direct result of saying no to almost everything, and yes with full conviction.
THE TEAM
People who've built, operated, and invested.
Our partners are former operators, investment bankers, and founders. We've sat on both sides of the table, and that perspective shapes everything we do for our portfolio.

Alexandra Reid
FOUNDING PARTNER
Former operator at two Fortune 500 exits. 20 years in growth equity and venture.

Marcus Chen
PARTNER, PORTFOLIO OPERATIONS
Built and scaled three SaaS companies. Joined Northbrook Fund to do it for others.

Isabelle Fontaine
PRINCIPAL, FINTECH & INFRASTRUCTURE
Former Goldman Sachs TMT. Leads our financial technology investment practice.

David Osei
PARTNER, CLIMATE & ENERGY
15 years in energy transition investing. Advisor to the UN Climate Finance Task Force.
OUR HISTORY
A decade of
deliberate growth.
From a $40M seed fund with five portfolio companies to a $380M institution with a decade of exits, relationships, and hard lessons, this is how we got here.
TRUSTED BY LEADING INSTITUTIONS
Meridian
Vantage
Atlas
Solara
Crestline
Gowind
WORK WITH US
If our philosophy
resonates, let's talk.
We're not right for everyone. We're deeply right for a few. If that's you, we'd like to know before someone else does.
COMMON QUESTIONS
Clarity before commitment.
What types of companies do you invest in?
How selective is your intake process?
What does Northbrook Fund offer beyond capital?
How long does the application process take?
Do you lead rounds or co-invest?
How are you compensated?