Olivia O'Sullivan

Olivia O'Sullivan

Verified

Partner & COO @ Forum Ventures | GTM & Ops Leader | Angel Investor | Endurance Athlete

Top Advisor

I specialize in

Fundraising 101
Hiring & Team Building
Marketing & GTM
Fundraising strategy
Growth
Seed round
Team Building

From GTM to ops to fundraising, I help founders move faster with confidence.

Background & Highlights

Partner & Chief Operating Officer

Forum Ventures

2019 – Present

Forum Ventures

Community Lead & Director of B2B Partnerships || A volunteer-led, global running community with chapters in 18 cities worldwide and 10,000+ active members.

MIDNIGHT RUNNERS

2018 – 2023

MIDNIGHT RUNNERS

Senior Manager, Product Marketing & GTM - Cross-functional team to launch innovative new products from 0-1.

Dow Jones

2017 – 2019

Dow Jones

About me

Partner & COO @ Forum Ventures | GTM & Ops Leader | Angel Investor | Endurance Athlete Please do not use Hubble to cold pitch. If you'd like to pitch me for investment, please go to: forumvc.com/pitch-us I help ambitious people and companies scale from early-stage chaos to sustainable growth. My career began in brand and product marketing (McDonald’s, The Wall Street Journal, Dow Jones) before evolving into cross-functional leadership roles blending GTM, operations, and community building. Today, as Partner & COO at Forum Ventures, I invest and lead our platform team across marketing, fundraising, community, and operations—helping 400+ B2B SaaS startups raise over $1B in follow-on capital. I thrive in 0→1 environments, love building high-performing teams and culture, and invest in founders tackling health, connection, and the future of work. What I Offer on Hubble ✅ Scaling early-stage startups (GTM, ops, and community) ✅ Fundraising strategy & investor relations ✅ Brand building for founders & funds ✅ Team culture & leadership development ✅ Angel investing in health & connection Background & Highlights ✅ Partner & COO at Forum Ventures, scaled team from 4 to 30+ ✅ Led fundraising for 400+ portfolio companies, $1B+ raised ✅ Built brand & GTM for McDonald’s, Dow Jones, and WSJ initiatives ✅ Community Lead for Midnight Runners NYC (grew weekly runners 10x) ✅ Angel investor and advocate for underestimated founders Whether you’re launching your first GTM motion, building community from scratch, fundraising for the first time, or scaling your operations, I can help you grow faster and smarter.

You'll get advice on

  • Scaling early-stage startups
  • Fundraising strategy & investor relations
  • Brand building for founders & funds
  • Team culture & leadership development
  • Career advice

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