Craig Stack

Craig Stack is a General Partner at Falcon 5 Capital, an Oregon-based investment firm founded in 2023. Falcon 5 describes itself as a group of founders, operators, investors, and technologists investing in “fields where technology and imagination intersect,” with an emphasis on founder support and positive societal impact.

Before Falcon 5, Stack was a co-founder and CFO of PK from July 2005 to December 2021, according to public professional-profile data. PK, also known as ProKarma, was a digital transformation and technology-services business; Falcon 5 co-founder Vijay Ijju has stated that ProKarma scaled to more than 6,000 employees before the founders’ exit in December 2021.

Public profile data also lists Stack as a Partner at On-Site Financial from July 2001 to June 2005, Co-Owner and President of Weller Company from August 1992 to June 2001, and in accounting at Grant Thornton from March 1980 to July 1992. In July 2025, he was listed as Co-Founder and Board Member at Gradera.

The stub email and phone number tied to `jherzog.com` were not verified for this Falcon 5 Capital investor. Public searches show a different Denver-based real-estate professional named Craig Stack associated with Colliers and formerly J. Herzog & Sons, so those contact details are omitted here.

• Falcon 5 says it invests in “fields where technology and imagination intersect,” combining capital with operating experience from founders, operators, investors, and technologists.
• The firm’s approach is founder-operator oriented: Falcon 5 says entrepreneurs receive investment plus access to experienced entrepreneurs who can provide guidance on building and scaling.
• Falcon 5 emphasizes technology and technology-enabled services, with listed focus areas including AI, SaaS, healthcare, fintech, consumer, edtech, climate, energy, mobility, and frontier technologies.
• The firm targets early-stage rounds, including seed, Series A, and Series B, according to investor-profile data.
• Falcon 5’s founder promise includes bringing “the right connections and expertise” and being “fellow founders first,” which suggests a preference for founders who want hands-on strategic support rather than passive capital.