John Donboli
Headshot of John Donboli, San Diego business owner and early-stage investing writer

San Diego, California

John Donboli

I write about venture capital and early-stage investing from San Diego, and I am building toward an investment practice focused on early-stage companies.

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Free learning series

The First Raise Series

A six-part, free guide for first-time founders on whether to raise, what investors look for, and how a first fundraise actually works.

Recent writing on venture and startup investing

2026-10-12

How I Evaluate an Early-Stage Startup: A Four-Part Framework

A working framework for sizing up an early-stage company: team, market, evidence, and deal structure, and the questions that sit under each.

2026-10-12

Why Power Laws Shape Everything in Venture Capital

Venture returns are driven by a small number of outsized winners. Here is why that changes how portfolios, risk, and decisions work.

2026-10-12

SAFEs, Convertible Notes and Priced Rounds: A Plain-English Primer

How the three most common ways to fund an early-stage company differ, and what investors and founders should understand before signing.

2026-10-12

A First-Pass Due Diligence Checklist for Early-Stage Investors

A practical checklist covering team, product, finances, ownership, and legal basics to review before investing in an early-stage company.

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