Executive Team



Matthew L. GannonManaging Principal

Matthew Gannon has over 18 years of experience in various aspects of commercial real estate covering investments, acquisitions, development, investment sales/capital markets, financing, leasing, and operations. Mr. Gannon’s expertise includes underwriting, due diligence, lease and purchase contract negotiations, financial analysis and market research. A native Washingtonian, he has worked at both the institutional and private investor level.

Mr. Gannon has participated in the acquisition and disposition of more than $1.5 billion in investments in twelve major markets. Throughout his career, he has actively sourced, valued, managed and executed over $2 billion in investment sales, debt and joint venture transactions in the Mid-Atlantic region. In co-founding TDG/SILVEROCK in 2015, Mr. Gannon uses his in-depth knowledge of the Mid-Atlantic real estate markets and real estate operations to direct the firm.

Mr. Gannon has held senior positions at Sage Capital Advisors, Ruppert Properties, Transwestern and CarrAmerica Realty Corp. He received both his BS and MBA in Finance from Mt. St. Mary’s University.

Andrew P. Shulman

Andrew P. ShulmanManaging Principal

Andrew Shulman has over 20 years of experience in various aspects of commercial real estate, including operations, leasing, sales and construction. He has built mansions in Bethesda and houses in Southern Maryland, managed an office portfolio of 150+ commercial tenants in DC’s Golden Triangle, and negotiated some of Montgomery County’s largest and most complex lease transactions. Mr. Shulman co-founded TDG/SILVEROCK in 2015. A Montgomery County native, he has developed a strong reputation and network in the local real estate, government, political, non-profit and business communities.

Mr. Shulman has represented a variety of landlords and tenants, including Roberts Oxygen Company and Roberts Home Medical, Potomac Disposal Inc., Jewish Council for the Aging of Greater Washington, TA Associates Realty and Federal Realty Investment Trust. He has earned a Top 20 Power Broker Award from CoStar Group and has been recognized numerous times by the Greater Washington Commercial Association of Realtors with the Million Dollar Leasing Award.

In addition to his involvement with numerous industry organizations, Mr. Shulman is past Chairman of the Board of the Greater Bethesda-Chevy Chase Chamber of Commerce, a board member of the Jewish Community Center of Greater Washington, as well as a Regional Director for Revere Bank, a past-Director of the Bethesda-Chevy Chase Rotary Club and past President of Rebuilding Together Montgomery County.

Mr. Shulman has held senior positions at Avison Young, McShea & Company, and Charles E. Smith Commercial Realty.  He received his BA in Communication from Tulane University.


Walter Donaldson

Walter R. DonaldsonPartner & Chief Executive Officer of The Donaldson Group (TDG)

Walter Donaldson is Chief Executive Officer of The Donaldson Group LLC and a Principal of TDG Capital Partners LLC, TDG Financial LLC and TDG Development LLC. Throughout his career, he has managed over 200 multifamily communities comprising more than 75,000 units, has opened and leased-up 40 multifamily communities with more than 11,500 units and has renovated 65-plus communities comprising over 23,000 units.

Prior to forming The Donaldson Group in 1998, Mr. Donaldson was the Executive Vice President, Director of Commercial Property Management and Director of Acquisitions at Grady Management Inc. During his five-year tenure at Grady, Mr. Donaldson made significant contributions to Grady’s commercial management and leasing operations, new property acquisition efforts and the restructuring, refinancing and repositioning of numerous assets in its portfolio. Prior to that, he was the Executive Vice President and Director of Property Management at Dreyfuss Brothers Inc. During more than two decades at Dreyfuss, he served in virtually every conceivable capacity, starting in 1970 as Assistant Property Manager and culminating as Senior Vice President and Director of Property Management. Mr. Donaldson was also instrumental in growing Dreyfuss’ portfolio from 2,500 units in 1970 to 32,500 units in 1990. He returned to Dreyfuss, following his five year tenure at Grady Management, in 1996 as Executive Vice President and Director of Property Management.

Carlton E. Einsel

Carlton E. EinselPartner & President of The Donaldson Group

Carlton Einsel is President of The Donaldson Group, a Principal of TDG Capital Partners LLC, TDG Financial LLC and TDG Development LLC. Mr. Einsel is responsible for directing all operating companies of The Donaldson Group, directing all asset management services for the properties owned and/or managed by The Donaldson Group and directing the acquisition program of TDG Capital Partners. His experience includes multifamily acquisitions of over $1.25 billion, dispositions of over $1 billion and recapitalizations of over $250 million and assisting in management takeover of over 18,000 units.

Mr. Einsel graduated first in his class at Fordham University and received a commission as a Second Lieutenant into the United States Army. He is a graduate of New York University School of Law, where he was an Associate Editor of the Law Review.

Upon graduating law school, he was accepted into the U.S. Army’s Honors Program, where he served as Assistant Counsel for Fiscal and International Law in the U.S. Army Corps of Engineers. After completing his service, he joined the law firm of Cadwalader, Wickersham & Taft in New York. Prior to joining The Donaldson Group in early 2003, Mr. Einsel was Vice President in Morgan Stanley’s Structured Credit Products Group in New York.


Lawrence A. ShulmanPartner & Founding Partner of Shulman Rogers Gandal Pordy & Ecker, P.A.

Lawrence Shulman is the founding member of Shulman, Rogers, Gandal, Pordy & Ecker, PA, the largest independent law firm in the Washington, DC suburban area. He received the Maryland State Bar Association’s Real Estate Lawyer of the Year award and the Legal Times’ Leading Lawyers Award.  He is a nationally recognized commercial real estate and leasing specialist, lecturer and a fellow of both the American Bar Foundation and the American College of Real Estate Lawyers (ACREL), serving multiple times as Programs Committee Chair. He has lectured for The Maryland Institute for Continuing Professional Education of Lawyers and the American Bar Association. For 20 years he has co-chaired the Continuing Legal Education’s Advanced Commercial Leasing Institute at the Georgetown University Law Center.  In 2012, he was inducted into the Maryland Chamber Business Hall of Fame.

Mr. Shulman has won numerous local and national awards for his community work in Montgomery County, MD. They include the Rockville Chamber of Commerce Citizen of the Year Award (1996), Leadership Montgomery’s Leader of the Year (1994) and the Volunteer Action Award from the President of the United States (1982).  In 1982, Washingtonian Magazine named him a Washingtonian of the Year.

Mr. Shulman holds an AB from Georgetown University and a JD from the Georgetown University School of Law.