At CFO (Boardroom Media) we track over 1,000,000 startups and over 5,000,000 people who hold key positions in these companies. We use this directory of startups to highlight top employees, founders and board members we think deserve more appreciation than they are currently getting.
This list showcases the top Illinois based CFO’ operating in the Professional Services space. If you think a CFO’ is missing from this list, feel free to contact our editor on [email protected].
The individuals on this list have been included because of exceptional performance in one of the following categories:
- Innovation – Operating as a key part in an extremely innovative business or startup.
- Growth – Operating as a key figure in the growth and upscale of a market leading business or startup.
- Management – Showing exceptional management skills.
- Societal impact – Putting their business on the map for their positive societal or environmental impact.
Our Data – We source our data from OSINT (open source intelligence) and public directories such as Crunchbase, SemRush and many more. The data from these sources should be treated with a degree of caution and verified yourself.

Stephen Nazaran
Head of Operations, Co-Founder & CFO of Page Vault
Steve coordinates Page Vault’s finances, operations, and marketing. Steve Nazaran is co-founder and CFO of Page Vault. Steve oversees product management, daily operations, marketing, and finance for the growing company. He has an extensive background in operations in small organizations and loves the challenge of wearing many hats in an expanding company. Steve is a National Science Fellow, holds an advanced degree from the University of Notre Dame and is currently an MBA candidate at Northwestern University’s Kellogg School of Management.
Follow Stephen Nazaran:
About Page Vault, Page Vault: Page Vault enables legal professionals to easily capture web content for use as evidence in the U.S. courts.
Mark DeVita
CFO of Heritage-Crystal Clean
CFO at Heritage-Crystal Clean.
Follow Mark DeVita:
About Heritage-Crystal Clean: Heritage-Crystal Clean is a leading provider of parts cleaning, used oil, re-refining, and hazardous and non-hazardous waste services
Mark DeVita
CFO of Heritage-Crystal Clean
CFO at Heritage-Crystal Clean.
Follow Mark DeVita:
About Heritage-Crystal Clean: Heritage-Crystal Clean is a leading provider of parts cleaning, used oil, re-refining, and hazardous and non-hazardous waste services

Timothy Costello
CFO of True Partners Consulting
Timothy L. Costello is Chief Financial Officer of True Partners Consulting LLC. Before True Partners, he was Chief Operating Officer of Sphere Communications Inc., a leading provider of VOIP telephone systems. He joined Sphere Communications as its Chief Financial Officer in 1996. Prior to Sphere, Mr. Costello was a Senior Manager at Arthur Andersen LLP in the audit and business advisory practice. Mr. Costello received his Bachelor of Science degree in Accountancy at the University of Illinois at Urbana-Champaign and is a Certified Public Accountant.
Follow Timothy Costello:
About True Partners Consulting: True Partners Consulting, a global tax and business advisory firm, allowing public and private enterprises navigate complex tax regulations.

Todd Welu
Chief Financial Officer of Crowe LLP
Prior to joining Crowe, Todd was the CFO of a billion-dollar asset management firm, the CFO/COO of an international executive search firm, and a senior manager at a Big Four public accounting firm, providing public accounting and consulting services.
Follow Todd Welu:
About Crowe LLP: Crowe LLP is a public accounting, consulting, and technology firm.