About Jeffrey Diggins
Jeffrey Diggins is a director of Phase Change Software LLC, a Lakewood, Colorado company that builds deterministic AI software for decoding legacy COBOL systems used by enterprises.
Experience
This experience comes from official bios and from SEC filings. For roles taken from filings, the years are when the filings name Jeffrey Diggins in the role, so the role may have started earlier or lasted longer.
Phase Change Software LLC Current
Director
2018 – Present · Lakewood, CO
Phase Change Software builds COBOL Colleague, a symbolic AI platform that maps legacy COBOL code into verified business knowledge for enterprises.
Key Colleagues at Startups
The people Jeffrey Diggins works with at each company, as listed on that company's latest Form D.
Phase Change Software LLC · Form D/A, Nov 3, 2026
DP
Donald Peskin
Director
MB
Mark Bieler
Director
GB
Gary Brach
CEO and director
ER
Elizabeth Richards
Executive officer
Howard Culang
Director
BC
Bradford Cleavenger
Executive officer
AK
Alan Kucheck
Executive officer