Brett Teele
Chief Financial Officer & Partner
Unusual Ventures
CFO & Partner at Unusual Ventures overseeing financial strategy, operations, and compliance, with 25 years across venture capital and private equity.
Bio
Professional summary
John Vrionis is Co-Founder and Managing Partner at Unusual Ventures. The firm’s official profile says he backs extraordinary founders at the earliest stages and has more than two decades of investing experience. His track record includes AppDynamics, Arctic Wolf Networks, Carta, Harness, Hallow, Liftoff.io, Mulesoft, Pinterest, Nicira, Nimble Storage, and Robinhood. Public profiles also emphasize Unusual’s hands-on approach to early-stage company building and product-market-fit support.
Investment focus
Stage, sector, and overall fit
Stage
Pre-seedSeedEarly stage
Sector
Enterprise softwareAIDeveloper toolsCybersecurityFintech
Thesis
Earliest-stage company buildingProduct-market-fit oriented founder supportEnterprise and technical software
Notable companies
Selected portfolio companies the partner has backed
AppDynamicsArctic Wolf NetworksCartaHarnessHallowLiftoff.ioMulesoftPinterestNiciraNimble StorageRobinhood
How to approach
Framing and angles for outreach
Pitch framing
Lead with the founder-market insight, the specific product-market-fit risk you are solving, and what you need help proving next. John appears especially relevant for early enterprise or technical founders who want an investor that will actively help with first hires, early sales, positioning, and go-to-market foundations.
Personalization hooks
- 1Reference Unusual’s hands-on early-stage company-building model.
- 2Connect the pitch to lessons from AppDynamics, Mulesoft, Harness, or Arctic Wolf if there is a real enterprise-software parallel.
- 3Emphasize specific product-market-fit milestones rather than only market size.
Recent signals
What the partner has said or done recently
Unusual’s current profile continues to position John as focused on the earliest stages.
Stanford GSB identifies him as a founder and managing partner at Unusual and links his work to product-market-fit support for formation-stage founders.
Other partners at Unusual Ventures
7 more profiles
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Nick Landolfi
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Unusual Ventures
Unusual Ventures VP backing AI, data, and compute infrastructure founders.
Robbie Th'ng
Vice President, Customer Development
Unusual Ventures
Unusual VP helping founders find early users and product-market fit.