Michael Gladstone is an angel investor based in Boston, Massachusetts, United States. The known portfolio counts 5 companies: SAPI, Xilio Therapeutics, Spero Therapeutics, Surface Oncology and Third Harmonic Bio.
Is Michael Gladstone a fit for your startup?
Paste your website. AI checks the fit and scores every other investor too.
Investment focus
- Stage
- Series B
- Sector
- Healthcare
Contacts
Michael Gladstone portfolio companies (5)
- SAPI
- Xilio Therapeutics
- Spero Therapeutics
- Surface Oncology
- Third Harmonic Bio
Affiliated funds' portfolios
Partner at Atlas Venture, whose known portfolio counts 9 companies
- Be Biopharma
- Kailera Therapeutics
- GRO Biosciences
- Judo Bio
- Scorpion Therapeutics
- nChroma Bio
- Trace Neuroscience
- PHINXT Robotics
- Triveni Bio
Investor Profile
The listing covers sector Healthcare, and focus areas Bioinformatics, Biotech, Clinical Trials and Drug Discovery. Startups operating in these areas may find Michael Gladstone relevant.
Stage-wise, the known deals cluster around Series B rounds.
The portfolio and focus above give founders context on whether Michael Gladstone matches their raise.
Colleagues at Atlas Venture
Showing 20 of 29
Jernej Godec
Principal
Cambridge, United States
Aimee Raleigh
Principal
Boston, United States
Peter Barrett
Partner
Waltham, United States
Jean-Francois Formela
Partner
Boston, United States
Kevin Bitterman
Partner
Cambridge, United States
Phillip Samayoa
Venture Partner
Cambridge, United States
Jason Rhodes
Partner
Cambridge, United States
Maurizio Fazio
Principal
Cambridge, United States
Bruce Booth
Partner
Wellesley, United States
Cody Tranbarger
Entrepreneur in Residence
Cambridge, United States
Rajesh Devraj
Venture Partner
Cambridge, United States
David Grayzel
Managing Director
Cambridge, United States
Steven Robinette
Venture Partner
Boston, United States
Jodie Morrison
Venture Partner/Advisor
United States
Diana Y.
Partner
Dwight, United States
Jane C.
Partner
St Paul, United States
Alyssa W.
Partner
Decatur, United States
Gina Z.
Partner
Riverside, United States
Evelyn C.
Partner
Minot, United States
Mark Gazecki
Principal
Munich, Germany
Similar investors
Showing 20 of 100
John Grossman
angel investor
Waltham, United States
Yury Kukushkin
angel investor
Boston, United States
Bernie Rudnick
Co-Founder
Newark, United States
Marc Goldberg
angel investor
Wellesley, United States
Matthew De Silva
Venture Partner
Chicago, United States
Chris Jackson
angel investor and operator angel
New York, United States
Andrew Sandford
angel investor
Boston, United States
David Mallery
angel investor and operator angel
San Diego, United States
Chris Meelia
angel investor
Robert Stein
angel investor
New York, United States
David Steinberg
angel investor and operator angel
Milton, United States
Bill McGugin
operator angel
Nashville, United States
Michael Aberman
angel investor
New York, United States
Robert Garcia
angel investor
Chicago, United States
Matt Krisiloff
Partner and Co-Founder
San Francisco, United States
Barry Fidelman
angel investor
Waltham, United States
Isy Goldwasser
angel investor
Los Gatos, United States
Rick Klausner
operator angel
Rich Aldrich
venture capital investor
Cambridge, United States
Alon Altschuler
angel investor and syndicate member
Boston, United States
Frequently asked questions
Who is Michael Gladstone?
Michael Gladstone is an angel investor based in Boston, Massachusetts, United States with 5 known investments on file, among them SAPI, Xilio Therapeutics and Spero Therapeutics. The sections above list the sectors, stages and firms attached to that record.
What does Michael Gladstone invest in?
Listed sectors include Healthcare; listed focus areas include Bioinformatics, Biotech, Clinical Trials and Drug Discovery. 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.
What stage does Michael Gladstone invest at?
The known deals of Michael Gladstone include Series B rounds. 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 Michael Gladstone listed at?
Michael Gladstone is listed as Partner at Atlas Venture. 29 other people in the database share a firm with Michael Gladstone.
How do I contact Michael Gladstone?
An email address, a phone number and a LinkedIn page are on file for Michael Gladstone. The address stays masked on this page and is readable inside RaiseHunt after you create an account.
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