Brian Long
Managing Partner at Atlantic Bridge
Palo Alto, California
Brian Long, Managing Partner at Atlantic Bridge is an active investor based in Palo Alto, California. This profile covers what Brian Long backs, at which stage, and how founders can reach out in 2026.
- Investor type
- AngelVCPEInvestment PartnerFounderInvestor
- Stages
- Early Stage VentureSeed
- Invests in
- Hardware & Deep TechRobotics & AutomationIoT & Connected DevicesDeveloper Tools & Data
- Location
- Palo Alto, California
- Typical check
- $375K
- Past investments
- 30
Notable investments
HiLight Semiconductor
Hedvig
BridgeCoMightyMeetingAcision
Hedvig Inc.
Localytics
Maginatics, Inc
Elisity
Aiqudo
Swrve
AnDAPTHow to reach Brian Long
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About this profile
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Cite this page
Round Funded. "Brian Long." Round Funded investor database, updated September 9, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/brian-long-palo-alto
Frequently Asked Questions
What does Brian Long invest in?
Brian Long invests in Hardware & Deep Tech, Robotics & Automation, IoT & Connected Devices and Developer Tools & Data, typically at Early Stage Venture and Seed. Match your sector and stage, then reach out with a personalized pitch.
What stage does Brian Long invest at?
Brian Long typically invests at Early Stage Venture and Seed. Lead with traction that fits the stage when you reach out.
What is Brian Long's typical check size?
Brian Long typically writes checks around $375K. 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.