John Carroll
Managing Director at Summit Partners
Boston, Massachusetts
John Carroll, Managing Director at Summit Partners is an active investor based in Boston, Massachusetts. This profile covers what John Carroll backs, at which stage, and how founders can reach out in 2026.
- Investor type
- VCPEInvestment PartnerInvestor
- Stages
- Series B
- Invests in
- Healthcare & BiotechRobotics & AutomationMedTech & Medical DevicesCybersecurityE-commerce & D2CSaaS & EnterpriseManufacturing & IndustrialMarketplace
- Location
- Boston, Massachusetts
- Typical check
- $3M
- Past investments
- 84
Notable investments
Advance Health
Striim
DuPage Medical Group
On Robot
Advanced Cell Diagnostics
Darktrace
Jungle Scout
PrismHR
Quay AustraliaNinja RMM
Markforged
PodiumHow to reach John Carroll
Angels and operators like John Carroll reply to specific, personalized notes that show real traction, not mass blasts. Build a verified list, write a note that fits their thesis, and track replies, all on Round Funded.
Reach active investors like this one
About this profile
This profile is part of Round Funded, an investor database and outreach platform for founders. It covers 60,000+ active VCs, angels, family offices and accelerators with verified contacts, lets you send pitches from your own Gmail, and includes a free Data Room for your raise. How this data is built.
Cite this page
Round Funded. "John Carroll." Round Funded investor database, updated October 19, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/john-carroll
Frequently Asked Questions
What does John Carroll invest in?
John Carroll invests in Healthcare & Biotech, Robotics & Automation, MedTech & Medical Devices and Cybersecurity, typically at Series B. Match your sector and stage, then reach out with a personalized pitch.
What stage does John Carroll invest at?
John Carroll typically invests at Series B. Lead with traction that fits the stage when you reach out.
What is John Carroll's typical check size?
John Carroll typically writes checks around $3M. Use it as a signal for whether your raise fits their stage.
How do founders reach investors like this?
Round Funded lists active investors with verified, professional contact details for signed-up founders. Filter by sector, stage and location, then send a personalized pitch from your own inbox.
What is Round Funded?
Round Funded is an investor database and outreach platform for startup founders. It lists 60,000+ active investors with verified contacts, filtered to recent investment activity, and lets founders send personalized pitches from their own Gmail, track replies, and share a free Data Room. Round+ starts at $99 per month with a 3-day trial.