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John Diaz

John Diaz

Founder & Managing Partner atStone Mountain VenturesDallas, Texas
Stone Mountain Ventures websiteFirm profile

John Diaz founded Stone Mountain Ventures in 2021, focusing on early-stage healthcare investments. He previously worked at Bain Capital Private Equity, Wellington Management, Goldman Sachs, and Bloomberg, and has founded and operated multiple companies.

What John can write

Writes checks of$100K to $500K
Comes in atPre-seed, SeedMostly follows a lead
Ownership target< 5%At first check
Pitch pageSubmit on their siteThe firm asks founders to apply here.

Stone Mountain Ventures writes $100K to $500K checks, larger than 5% of firms in the atlas.

Bars: how many firms report each check band. Highlighted: Stone Mountain Ventures.

Career

  1. Bloomberg
  2. Goldman Sachs
  3. Wellington Management
  4. Bain Capital Private Equity · Associate
  5. Stone Mountain Ventures · Founder & Managing Partner
    Now
  6. Stone Mountain Ventures Management Co LLC · Managing Partner/Founder
    2021-null

Companies founded

Stone Mountain Ventures

Focus

healthcarepre-seedseedinfrastructuretechnologyhealth care

Partners like John

At firms with a similar stage, sector and check size.

Blair Garrou
Blair GarrouManaging Partner, Mercury Fund
Julie Castro Abrams
Julie Castro AbramsManaging Partner, How Women Invest
Danny GrantCTO & Founding Partner, Innovobot
Gemma Lenowitz Picot
Gemma Lenowitz PicotProgram Director of Social Enterprise, Samvid Ventures
Petra Stuhmeier GriffithManaging Director, Wedbush Ventures
Justin BaylessFounder & Managing Principal, Bayless Ventures

Alert me when Stone Mountain Ventures is active

One email when John's firm raises a fund, adds a partner or shows new activity.

Founders and investors at a Mode VC gathering

Send Mode VC your deck

Raising a pre-seed or seed round? We write $1M to $5M first checks and help founders with distribution. A partner reads every deck.

Send your deck

Questions

Who is John Diaz?

John Diaz founded Stone Mountain Ventures in 2021, focusing on early-stage healthcare investments. He previously worked at Bain Capital Private Equity, Wellington Management, Goldman Sachs, and Bloomberg, and has founded and operated multiple companies.

How much does John Diaz invest?

John Diaz invests through Stone Mountain Ventures, which writes checks of $100K to $500K at pre-seed, seed.

How do I pitch John Diaz?

A warm intro from a founder Stone Mountain Ventures backed works best.

What did John Diaz do before Stone Mountain Ventures?

Bloomberg; Goldman Sachs; Wellington Management; Associate at Bain Capital Private Equity; Managing Partner/Founder at Stone Mountain Ventures Management Co LLC.

Last updated 2026-10-15. Is this you? Ask for a correction.