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PROOF.VC
PROOF.VC operates from Reston, Virginia, with an investment team that includes John Burke, Bryan Ciambella, and Prince Khaled Bin Alwaleed. The firm brands...
PROOF.VC
PROOF.VC operates from Reston, Virginia, with an investment team that includes John Burke, Bryan Ciambella, and Prince Khaled Bin Alwaleed. The firm brands itself as an expansion-stage investor, stepping in when companies are scaling proven models. The strategy targets category leaders across enterprise software, fintech, digital health, deep tech, and consumer platforms. Confirmed positions include Zipline, the drone logistics company; Colossal Biosciences, which is pursuing de-extinction; sports network Overtime; mental-health platform Rula Health; daily-pay provider DailyPay; and 3D-printed construction firm ICON Build. The portfolio extends to cybersecurity, space — Astra delivers small-satellite launches — and alternative proteins via Beyond Meat. Geographically, exposure spans the United States, Africa, and the Middle East. Nine professionals are listed on the firm's team page. Leadership includes a Venture Partners group with Peter Harrison, Lisa Suennen, Ekta Tolani, and Zeid Masri. The firm also honors late co-founder John Backus. No recent fund close or headcount change is publicly confirmed. PROOF.VC's structural distinction is its co-investment model: the firm originates deals through relationships with seed-stage managers, providing growth capital while those managers retain ongoing participation. This architecture gives PROOF access to curated follow-on rounds and positions it as a liquidity partner rather than a competitive threat to early backers.
General information
Firm type
Private Equity
Year founded
2016
AUM
Undisclosed
Location
Region
North America
Country
United States
City
Reston
Corporate office
Reston, VA, United States
Principals
Thanasisi Delistathis
Investment Team
John Burke
Investment Team
Bryan Ciambella
Investment Team
Jennifer Schretter
Investment Team
Prince Khaled Bin Alwaleed
Investment Team
Ha Dao
Investment Team
Sector focus
Frequently asked questions
Who makes investment decisions at PROOF.VC?
The investment team is led by Thanasisi Delistathis and includes John Burke, Bryan Ciambella, Jennifer Schretter, Prince Khaled Bin Alwaleed, and Ha Dao. A separate Venture Partners group — Peter Harrison, Lisa Suennen, Ekta Tolani, and Zeid Masri — supports sourcing and diligence. The firm does not publicly disclose a formal investment committee structure.
How does PROOF.VC source its deals?
PROOF.VC partners with early-stage venture managers, stepping into follow-on rounds for their highest-performing companies. A manager at Frontier Venture Capital has stated that the model allows original seed investors to maintain participation and upside, while a Fluent Ventures managing partner described PROOF as a first call when doubling down on top portfolio companies.
Does PROOF.VC lead rounds or co-invest?
The firm operates primarily as a co-investor, providing expansion capital alongside existing syndicates. Its public positioning and testimonials from seed managers emphasize a founder-first, non-disruptive approach, suggesting PROOF typically does not lead but writes meaningful checks into rounds led by other firms.
What stage does PROOF.VC target?
PROOF.VC describes itself as an expansion-stage firm, investing in companies that are ready for their next phase of growth. This implies post-product-market-fit, revenue-generating businesses rather than pre-revenue or seed-stage startups. The portfolio bears this out with names like Zipline, Overtime, and ICON Build.
Which sectors does PROOF.VC avoid?
The firm does not publish an explicit exclusion list. Its portfolio is broad — spanning bioscience, fintech, enterprise SaaS, space, and consumer — with no apparent positions in traditional energy, heavy industrials, or controversial sectors like tobacco or defense primes.
Is PROOF.VC a fund or a family office?
PROOF.VC is structured as a venture capital firm, not a family office. It raises outside capital and deploys it into portfolio companies as a registered investment manager. The presence of Prince Khaled Bin Alwaleed on the investment team connects the firm to prominent private wealth, but the entity itself is an asset manager.
Does PROOF.VC have a philanthropic arm?
There is no publicly disclosed foundation or philanthropic vehicle tied directly to the firm. Prince Khaled Bin Alwaleed's family office, KBW Ventures, maintains separate impact and investment activities, but PROOF.VC's website lists only investment and operations functions.
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