Hollerbach & Associates, LLC 
PO Box 1961
Ellicott City, MD 21041-1961

Phone: (410) 382-6912
Fax: (410) 203-1785

Office Hours: By Appointment

        Contact Us
Martha H. Sweeney, MS, CCC-SLP, Head of School,
The Odyssey School
Jack Hollerbach stepped in to effectively take over a multifaceted role as Odyssey's Interim Finance Officer back in the fall. His expertise, professionalism, and focused execution of daily operations made for a seamless four month transition. I am so appreciative of all that Jack did during his time at The Odyssey School.

Jeannie Howe, Executive Director
Greater Baltimore Cultural Alliance
As I reflect back on 2021 in all its highs and lows, I am filled with gratitude for the many people who have made our work possible. GBCA is blessed with a stellar Board of Directors, which has been led in 2021 by the Dean of Peabody at Johns Hopkins University, Fred Bronstein. Dr. Bronstein’s steady hand and deep thinking have been critical to me and GBCA as we have navigated the pandemic. Who could have imagined running a world renowned conservatory and shepherding GBCA while dealing with a global health crisis.
I want to thank the amazing GBCA staff for their hard work, creativity, and perseverance. They are: Kibibi Ajanku, Renz Balagtas, Pangelica Hall, David London, and Luca Mochi. Also on our team, Thomas Beckwith, Jack Hollerbach, and Laura Wolf. All of you made this tough year shine.

Barbara Bozzuto, Chairman of the Board, Baltimore Symphony Orchestra
Jack's contributions to the interim management of the BSO were immensely valuable, and his report to the Board and recommendations were likely the most comprehensive and detailed in the organization's history

Chad Tyler, President Tyler Companies
Jack assisted Tyler Companies with strategic planning and in-depth financial analysis. His extensive experience and knowledge in the fields of construction, banking and finance were extremely valuable and helpful to Tyler Cos. I strongly recommend Jack's consulting services for any company looking for a seasoned high level executive, that brings innovative and forward thinking for achieving long term goals and objectives

David Baris, Esq., Partner Buckley Sandler LLP
I have had the privilege of working with Jack on a project over the past several months. He has proven to be a consummate professional with a deep understanding of banking and a positive attitude.

Ernie Paszkiewicz, CPA 
As a member of the Audit Committee at Volunteers of America Chesapeake, I much appreciated Jack's professionalism and candor with the Committee. He was well informed about all aspects of the company's performance, forecasts and multiple real estate and program initiatives. He is a sound theoretical financial professional and CPA and an asset to any client he would be associated with. I have also found Jack to be very flexible. He has a background in banking and also worked as CFO at a major construction firm for a number of years.

Robert Scheer, President at Scheer Partners
I worked with Jack as a member of the Board and Finance Committee at Volunteers of America Chesapeake. His analysis of the company's position and prospects was always well reasoned and thorough, and presented in a clear consistent manner. In addition his work on various major real estate projects of the company, including funding and budgets was excellent. 

Ivan Diaz, Corporate Strategy at NII Holdings, Inc.
I had the privilege of working with Jack structuring an international food manufacturing and distribution business. His contributions in the strategic planning, capital raising and investor management areas made him a valuable asset of the team.

Stacie Benes, Client Relationship Executive at PwC
Jack is the consummate professional. He is an astute businessman who brings savvy and expertise to any situation. Jack is a leader and a visionary and someone who is respected by his peers. 

Adam Steele, Co-Founder of zeroK NanoTech
Jack was kind enough to serve as a mentor to zeroK from 2011 to today (12/17/12). He has generously given his time, advised my co-founder and me on various business issues, and given us access to his list of professional contacts. I hope to continue working with Jack into the future.

  Memberships & Participation

   Tech Council of Maryland
   Maryland Chamber of Commerce
   Montgomery County Chamber
   Howard County Chamber
   Maryland Association of CPAs
   KPMG Audit Committee Institute
   Baltimore Symphony Orchestra
   MD Incubator Company of the Year
   Maryland Construction Network
   GovNet Government Contractors Forum
   Greater Baltimore Cultural Alliance
   Pride of Baltimore- Maryland's Tall Ship
   Howard County Tech Council