Brian Shortsleeve is a Co-Founder at M33 Growth, whose known portfolio counts 11 companies.
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Investment focus
- Stage
- GrowthLate-StageSeed
Contacts
Affiliated funds' portfolios
Co-Founder at M33 Growth, whose known portfolio counts 11 companies
- PerformLine
- SwiftComply
- Synergy
- ARES PRISM Software
- BFC Associates
- Clear Demand
- GoDocs
- IFS Core
- Luke & Associates
- Rosnet
- YAPI Dental Software
Investor Profile
The listing covers sectors FinTech, Healthcare, Real Estate and SaaS, and focus areas CRM, Customer Support, DentalTech and Enterprise SaaS. Startups operating in these areas may find Brian Shortsleeve relevant.
Stage-wise, the deals at M33 Growth cluster around Growth, Late-Stage and Seed rounds.
The firm portfolio and the focus above give founders context on whether Brian Shortsleeve matches their raise.
Colleagues at M33 Growth
Mike Anello
Co-Founder
Boston, United States
Alex Moorhead
Executive in Residence
Toronto, Canada
Nate Ellis
Vice President
Boston, United States
Tommy Belton
Vice President
Boston, United States
Gabe Ling
Co-Founder
Boston, United States
Gillian O'Connor
Investor
New York City, United States
Devanshi Murpana
Growth Equity Investor
Boston, United States
Kara Hollis
Executive Director
Boston, United States
Olivia Thompson
Investor
United States
Erik Hoffstadt
Director
Boston, United States
Frequently asked questions
Who is Brian Shortsleeve?
Brian Shortsleeve is a private equity investor and venture capital investor based in Boston, Massachusetts, United States, listed as Co-Founder at M33 Growth. The known portfolio of that firm counts 11 companies. That portfolio belongs to the firm, not to Brian Shortsleeve personally.
What does Brian Shortsleeve invest in?
Listed sectors include FinTech, Healthcare, Real Estate and SaaS; listed focus areas include CRM, Customer Support, DentalTech and Enterprise SaaS. Those tags come from the portfolios of the firms this profile is attached to, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does Brian Shortsleeve invest at?
M33 Growth appears in Growth, Late-Stage and Seed rounds across its known deals, and Brian Shortsleeve is listed there as Co-Founder. Stage is the strongest single filter when you build a target list: an investor with no record at your stage rarely starts with you.
Which firm is Brian Shortsleeve listed at?
Brian Shortsleeve is listed as Co-Founder at M33 Growth. 10 other people in the database share a firm with Brian Shortsleeve.
How do I contact Brian Shortsleeve?
An email address, a phone number and a LinkedIn page are on file for Brian Shortsleeve. The address stays masked on this page and is readable inside RaiseHunt after you create an account.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal