AOG Investors OPS Portal PAARTSSM Store
Twitter Facebook Instagram Linkedin YouTube

Marc J. Walfish (2003)

Founding Partner, Merit Capital Partners

Marc J. Walfish Marc J. Walfish


Founding Partner, Merit Capital Partners

Marc Walfish founded Merit Capital Partners, formerly known as William Blair Mezzanine Capital Partners, in 1991. Merit is based in Chicago, Ill, and manages four institutionally sponsored limited partnerships, the most recent of which closed in 2004. These partnerships have over $1 billion in committed capital and are engaged in investing mezzanine capital and equity alongside management teams and other investors in management buyouts, recapitalizations, leveraged acquisitions and internal expansions.

Prior to founding Merit Capital Partners, Mr. Walfish worked for 13 years at The Prudential Insurance Company of America, most recently as Senior Vice President of Prudential Capital Corporation. In this capacity, Mr. Walfish was based in Chicago and was responsible for the firm’s four Midwest offices and a portfolio of over $2 billion.

Mr. Walfish received a Bachelor of Science in Business Administration and a Master of Business Administration from Boston University.

AOG Investors OPS Portal PAARTSSM Store

Our products

Airframe parts Engine solutions OEM Solutions Mobility Systems AOG Contact nowContact

Our services

Airframe Maintenance Landing Gear Services Component Repair Services Wheels and Brakes Services Engineering Services
Flight-hour support Consumables and Expendables Aircraft sales and leasing Airinmar® Trax
ASTRO Government contract vehicles

Digital innovation

AARIVE® The PAARTSSM Store Airvolution® Trax


Locations Certifications Doing It Right®


Corporate Officers Senior Leaders Board of Directors

Environmental, social, and governanceEnvironmental, social, and governance

Ethics and compliance



US job openings Amsterdam job openings Trois Rivières job openings United Kingdom job openings Windsor job openings

Working at AARWorking at AAR

Employee experience Diversity, equity, and inclusion Military veterans


EAGLE Career Pathway Program


AAR in the news AAR news Press releases Media resources
2022 Annual Report 2022 ESG Report Senior leaders Events