Where does John "JJ" Jack work?

John "JJ" Jack is Venture Partner at Shield Capital.

What check size does John "JJ" Jack write?

John "JJ" Jack typically writes checks of $100K – $5M.

Where did John "JJ" Jack go to school?

John "JJ" Jack studied at University of California, Berkeley (BS, Finance); St. Ignatius College Prep (GED, Physics).

John "JJ" Jack

Investor

Venture Partner at Shield Capital

San Francisco, California

Writes $100K – $5M checks · typically $1.5M

About

Software industry executive who served as CEO of Fortify Software and Covalent, and COO at The Vantive, with a career spanning sales and senior leadership roles starting at Sybase.

Invests in

AI & Machine LearningCybersecurityDefense TechRoboticsSpace Tech

Experience

Andreessen HorowitzBoard Partnercurrent2012 — presentMenlo Park, CA
Castle Peak GroupPrincipalcurrent2012 — present
Harmonic Growth PartnersCEO Partnercurrent2019 — presentUnited States
Shield CapitalVenture Partnercurrent2022 — presentSan Francisco, California, United States
IllumioMember, Board of Directorscurrent2013 — presentSanta Clara, CA
Contrast SecurityMember, Board of Directorscurrent2015 — presentPalo Alto, CA
Aravo Solutions - Integrated Risk & ResilienceMember, Board of Directorscurrent2022 — presentDallas, Texas, United States
CipherCloudMember, Board of Directors2012 — 2021
Respond Software Inc.Member, Board of Directors2017 — 2020Mountain View, CA
Coconut Cay Cocktail CompanyFounder and Co-CEO2016 — 2019San Francisco Bay Area
AlienVaultMember, Board of Directors2012 — 2018San Mateo, CA
ClearSlide, Inc.Member, Board of Directors2012 — 2017
RedOwl AnalyticsMember, Board of Directors2017Baltimore, Maryland Area
The Olympic ClubPresident for 2015 and Member, Board of Directors2013 — 2015San Francisco, CA
CenzicMember, Board of Directors2012 — 2014
St. Ignatius College PrepMember, Board of Regents2006 — 2012
HP SoftwareVice President Field, Enterprise Security Products2011 — 2012
HP SoftwareCEO Fortify Software, An HP Company2010 — 2011
Fortify SoftwareChief Executive Officer2004 — 2010
Covalent TechnologiesChief Executive Officer2000 — 2004
VantiveChief Operating Officer1995 — 1999
SybaseVarious Sales Executive Positions1986 — 1995

Education

University of California, BerkeleyBS, Finance1973 — 1977
St. Ignatius College PrepGED, Physics1969 — 1973

Colleagues at Shield Capital

Akhil Iyer

Principal at Shield Capital

Ashton Carter

Senior Advisor at Shield Capital

Caroline Aertker

Investor Relations Analyst at Shield Capital

Dan Holland

COO at Shield Capital

Dan Razin Caine

Venture Partner at Shield Capital

David DeRuff

Chief Financial Officer (fractional, part-time) at Shield Capital

David Goldfein

National Security Advisory Board at Shield Capital

David Rothzeid

Principal at Shield Capital

Network2

Akhil Iyer

Principal at Shield Capital

David Rothzeid

Principal at Shield Capital

Investors connected to John in public investor directories — a warm-intro map.

Frequently asked questions

Who is John "JJ" Jack?: Software industry executive who served as CEO of Fortify Software and Covalent, and COO at The Vantive, with a career spanning sales and senior leadership roles starting at Sybase.
Where does John "JJ" Jack work?: John "JJ" Jack is Venture Partner at Shield Capital.
What does John "JJ" Jack invest in?: John "JJ" Jack invests in AI & Machine Learning, Cybersecurity, Defense Tech, Robotics, Space Tech.
What check size does John "JJ" Jack write?: John "JJ" Jack typically writes checks of $100K – $5M.
Where did John "JJ" Jack go to school?: John "JJ" Jack studied at University of California, Berkeley (BS, Finance); St. Ignatius College Prep (GED, Physics).