Professional networking events, built for the people actually in the room.
Sum of Five hosts curated professional networking events across 27 cities in the United States and Canada. We organise rooms by industry — 7 series in all — so the people you meet are the ones worth meeting.
Who we are
Sum of Five is a professional networking community. We believe the most valuable thing at any event isn't the venue or the open bar — it's the five people you actually connect with. So we build for that: small, considered rooms where founders, professionals, and investors can meet peers who share their ambitions, and leave with relationships that go somewhere.
Our mission is simple — to make genuine professional connection easy. Every event is grouped by industry, held at a real venue with a bar, and designed as a free-form social gathering. No lanyards, no forced icebreakers. Just an open, comfortable room and the kind of company that moves a career or a business forward.
What started in a handful of cities now spans 27 across North America, and we're still growing — adding cities and series as the community expands.
Why professionals attend
Curated by industry
Every room is organised around a field — so you're meeting people whose work actually overlaps with yours, not a random crowd.
Small, high-signal rooms
We favour quality of conversation over headcount. The point is to leave with a few real connections, not a stack of forgotten cards.
A real, relaxed setting
Held at proper venues with a bar, our events are free-form and low-pressure. Come solo or with colleagues — you'll be made to feel at home.
The right people
Founders, executives, investors, and established professionals — plus the rising talent building alongside them.
Across North America
One community, 27 cities, 7 industry series. Wherever you are, there's likely a room for you.
A trusted brand
Sum of Five is operated by 15772877 Canada Inc.. Events are for guests of legal drinking age, and we take the experience — and your trust — seriously.
7 industry series
Each series brings together a distinct professional world. Explore the one that fits you.
Curated networking at the crossroads of AI, technology, and finance — meet founders, engineers, investors, and finance pros shaping fintech and emerging tech.
Curated networking across engineering, energy, and transportation — meet engineers, energy specialists, infrastructure leaders, and cleantech investors.
Curated networking for entrepreneurs, founders, and investors — meet startup founders, seasoned owners, mentors, and VCs building the next venture.
Curated networking across healthcare, pharma, and business — meet clinicians, pharma and biotech leaders, health-tech founders, and investors.
Curated networking across law, real estate, and construction — meet attorneys, brokers, developers, contractors, and investors shaping property and development.
Curated networking for film, media, and television — meet filmmakers, writers, actors, producers, and creators shaping the screen.
Curated networking for ambitious young professionals across every industry — meet recent grads, founders, investors, and rising professionals.
27 cities across the US and Canada
Find professional networking events near you.
Join the community
Get on the list to hear about the next room in your city, and follow along for what's coming next.