Luke Castle is an angel investor based in Minneapolis, Minnesota, United States with one known investment, Estimize.
Is Luke Castle a fit for your startup?
Paste your website. AI checks the fit and scores every other investor too.
Investment focus
Contacts
Luke Castle portfolio company (1)
- Estimize
Affiliated funds' portfolios
Director at Monroe Capital, whose known portfolio counts 10 companies
- OSSIO
- TechnoMile
- Antelope
- Archtop Fiber
- Beckway
- Folexport
- Fusion Capital Partners
- NFS Capital
- Osprey Landscape Group
- Quest Resource Holding Corporation
Investor Profile
The known portfolio sits in sectors Climate, Consumer, Healthcare and SaaS, and focus areas Clean Energy, Digital Health and Enterprise SaaS.
The portfolio and focus above give founders context on whether Luke Castle matches their raise.
Colleagues at Monroe Capital
Showing 20 of 30
Casey Vercauteren
Vice President
Chicago, United States
Jack Bernstein
Managing Director
New York, United States
Lihan Yu
Vice President
Chicago, United States
Rob Tanakatsubo
Managing Director
Chicago, United States
Seth Friedman
Managing Director - Head of Structured Solutions
Chicago, United States
Jason Starr
Managing Director, Real Estate
New York, United States
Tess Cross
Director
Chicago, United States
Jake Silverman
Director
Chicago, United States
Matt Lane
Managing Director
Chicago, United States
Theodore Koenig
Chairman and CEO
Chicago, United States
M.P. Hayden
Managing Director
Grosse Pointe, United States
Zia Uddin
President
Chicago, United States
Waleed Noor
Managing Director
Abu Dhabi, United Arab Emirates
Steve Hinrichs
Managing Director
Hermosa Beach, United States
Jeremy Simmons
Managing Director
Chicago, United States
Matthew Evans
Managing Director - Healthcare
Highland Park, United States
Andrew Eck
Vice President
Chicago, United States
Alex Patil
Partner
Los Angeles, United States
Dan Letizia
Managing Director
Chicago, United States
Nathan Harrell
Managing Director
Chicago, United States
Similar investors
Showing 20 of 100
Vince Monical
angel investor
Mountain View, United States
David Montanaro
angel investor and operator angel
Syracuse, United States
Christopher Caruso
angel investor and operator angel
Chicago, United States
John McIntyre
angel investor
Madison, United States
Dan Karlin
angel investor and operator angel
Chicago, United States
Alan Morgan
Chairman
London, United Kingdom
Matt L.
angel investor
Chicago, United States
Charles Jones
angel investor
Harrison, United States
Michael Dadoun
angel investor
Montreal, Canada
Mukund Chopra
Founder
Chicago, United States
Mark Caron
angel investor and operator angel
New York City, United States
Kevin Moore
angel investor
Dallas, United States
Ashby Monk
angel investor and operator angel
Los Gatos, United States
Rich Miller
angel investor and operator angel
San Mateo, United States
Dhani Jones
Operator Advisor
Detroit, United States
Brian Weed
angel investor and operator angel
United States
Jiong Ma
angel investor
Waltham, United States
Harley Miller
Founder
New York, United States
Howard Marks
CEO
Beverly Hills, United States
Jeremy Morgan
angel investor and operator angel
London, United Kingdom
Frequently asked questions
Who is Luke Castle?
Luke Castle is an angel investor based in Minneapolis, Minnesota, United States with one known investment on file, Estimize. The sections above list the sectors and firms attached to that record.
What does Luke Castle invest in?
Listed sectors include Climate, Consumer, Healthcare and SaaS; listed focus areas include Clean Energy, Digital Health and Enterprise SaaS. Those tags come from the companies attached to this profile, so they read as a record of what has been backed rather than a stated preference for what comes next.
Which firm is Luke Castle listed at?
Luke Castle is listed as Director at Monroe Capital. 30 other people in the database share a firm with Luke Castle.
How do I contact Luke Castle?
An email address and a LinkedIn page are on file for Luke Castle. The address stays masked on this page and is readable inside RaiseHunt after you create an account. The database holds no phone number for this profile.
Skip the browsing. Let AI find your ideal investors in one minute.
Paste your startup website and AI picks your best-fit investors out of 135,000+ profiles.
Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal