vcvibes

ProofFirm match from fund name (lower confidence)

PROOF Fund IV, LP

Open, writing first checks

Open: first sale Jun 2025, per Form D (fund age approximates vintage)

Open their pitch form
Vintage
2025
Fund size
$27.07M (Form D)
Stages
Growth
Sectors
Not stated
Regions
Not stated

01 · Thesis

PROOF invests in expansion-stage, hypergrowth, breakout companies across leading venture sectors, especially those backed by top-tier venture capital funds. It also partners with early-stage funds to access their top-performing companies through pro rata rights.Inferred from the firm's website

02 · Initial check

$902K to $1.69M (estimated from fund size)

Estimated from Form D

03 · Who to approach

Named on this fund's Form D

  • Thanasis Delistathis, CO-FOUNDER, MANAGING PARTNER
  • John Backus, Jr.

04 · Deals

No deals attributed to this fund yet.

05 · Evidence

  • Firm-widePROOF is an expansion-stage venture capital firm investing in hypergrowth, breakout companies across leading venture sectors, backed by top-tier venture capital funds.

    We are an expansion-stage venture capital firm investing in hypergrowth, breakout companies across leading venture sectors, backed by top-tier venture capital funds.
    https://www.proof.vc/about-us

06 · Sources

  1. https://www.proof.vc/about-us
  2. https://www.sec.gov/Archives/edgar/data/2061594/000196651325000006/

Last verified: Oct 28, 2026