John Diaz
InvestorHead of Talent at First Round Capital · General Partner at Stone Mountain Ventures
Dallas, Texas, United States
Writes $100K – $500K checks
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860 people in our graph share verified history with John — schools, employers, funds. One of them is your warm intro.
About
John Diaz is the founder and General Partner of Stone Mountain Ventures, a seed fund backing early-stage companies in healthcare, AI, consumer, and technology. He previously served as an Associate at Bain Capital Private Equity, an Advisor to Grant Park Ventures, and a Business Development Associate at Wellington Management, with earlier internships at Bloomberg and Goldman Sachs. He has founded two companies and operated several others, holds a BBA in Finance and Risk Management from St. Mary's University, and sits on the university's Alumni Board of Directors.
Contact· published on John's own website
Invests in
BiotechConsumerHealthtechMedical Devices
Experience
- Stone Mountain VenturesFounder & Managing Partnercurrent2021 — presentDallas, TX
- Estacado InterestsVenture Partner2022 — 2024Dallas, TX
- Grant Park VenturesDeal Consultant2020 — 2021
- Bain CapitalAssociate2019 — 2021Boston, Massachusetts
- Wellington ManagementAssociate2018 — 2019Boston, Massachusetts
- J David Watches, LLCCo-Founder2016 — 2018San Antonio, Texas Area
- Bloomberg LPSummer Analyst2017New York, New York
- Sendero Wealth ManagementInvestment Analyst Intern2016 — 2017San Antonio, Texas Area
- Goldman SachsSummer Analyst2016Dallas/Fort Worth Area
Skills & more
+2 more
Managementfinancial modelFrom John's professional profile.
Deals · 50
Paralign HealthSolo GP
via Stone Mountain Ventures · filed May 2026
Paralign HealthSolo GP
via Stone Mountain Ventures · filed May 2026
ClostrabioSolo GP
via Stone Mountain Ventures · filed Sep 2022
LedaSolo GP
via Stone Mountain Ventures · filed Mar 2022
GrouportSolo GP
via Stone Mountain Ventures · filed Aug 2021
Altira HealthSolo GP
Backpack HealthcareSolo GP
BemeSolo GP
BetterYouSolo GP
Blooming HealthSolo GP
Brond HealthSolo GP
Care HeroSolo GP
DentiteSolo GP
FrameSolo GP
Grow TherapySolo GP
HealthtrackaSolo GP
Kadia HealthSolo GP
Legion HealthSolo GP
ManateeSolo GP
MDisruptSolo GP
MindhoneySolo GP
Mood HealthSolo GP
Nexus MdSolo GP
Nimblemind.aiSolo GP
OneHealthNgSolo GP
OotifySolo GP
RxpostSolo GP
ShmoodyappSolo GP
SmirkhealthSolo GP
Valorize BioscienceSolo GP
VillieSolo GP
WaffleinsuranceSolo GP
YourPathSolo GP
YunaSolo GP
BrondSolo GP
Care Delivery & NavigationSolo GP
Consumer Health & WellnessSolo GP
DiallSolo GP
Fund II CompanySolo GP
Health Infrastructure & EnablementSolo GP
Healthcare AI & DataSolo GP
HykaSolo GP
Insurance & BenefitsSolo GP
LeewaySolo GP
LeewayhqSolo GP
Marketplaces & EnablementSolo GP
Mental & Behavioral HealthSolo GP
SmirkSolo GP
SUD & Behavioral HealthSolo GP
WaffleSolo GP
Attribution from SEC filings, press coverage, and firm rosters. Some rows are inferred. Not right? Tell us.
Other disclosed investments
Investor
Angel investment in Grow Therapy and Cyble. VC fund checks into Legion HealthBezel
Per curated public sources.
Colleagues at First Round Capital
Frequently asked questions
- Who is John Diaz?
- John Diaz is the founder and General Partner of Stone Mountain Ventures, a seed fund backing early-stage companies in healthcare, AI, consumer, and technology. He previously served as an Associate at Bain Capital Private Equity, an Advisor to Grant Park Ventures, and a Business Development Associate at Wellington Management, with earlier internships at Bloomberg and Goldman Sachs. He has founded two companies and operated several others, holds a BBA in Finance and Risk Management from St. Mary's University, and sits on the university's Alumni Board of Directors.
- Where does John Diaz work?
- John Diaz is Head of Talent at First Round Capital.
- What does John Diaz invest in?
- John Diaz invests in Biotech, Consumer, Healthtech, Medical Devices.
- What check size does John Diaz write?
- John Diaz typically writes checks of $100K – $500K.
- What companies has John Diaz invested in?
- Investments tracked here include Angel investment in Grow Therapy and Cyble. VC fund checks into Legion Health, Bezel, Blooming Health, MDisrupt, YourPath.
- Where did John Diaz go to school?
- John Diaz studied at St. Mary's University (Bachelor's of Business Administration (B.B.A), Finance and Risk Management); Antonian College Preparatory High School.
Same school
Also attended St. Mary's University8
+ 2 more
Shared employers
Also worked at Bain Capital272
+ 266 more
Also worked at Wellington Management58
+ 52 more
Also worked at Bloomberg LP249
+ 243 more
Also worked at Goldman Sachs2,000
+ 1,994 more