OUR PEOPLE
Meet Our
Team
Experienced professionals dedicated to delivering exceptional results for our clients.
FOUNDING PARTNERS
Meet Our Leaders
David Rosenberg
Managing Partner
As a 30-year veteran of the real estate market, David Rosenberg has had a successful career in all areas of real estate.
In 2009, David and Abe Katz founded Deerwood Real Estate Capital. Over the course of eight years, they grew Deerwood to 25+ people and $2.5 billion of deals closed per year. Managing all aspects of the business, from production to operations, David and Abe created a successful, national mortgage brokerage firm.
In 2017, they sold Deerwood to Walker & Dunlop and stayed on to run the Walker & Dunlop NJ office. David served as Senior Managing Director at Walker & Dunlop until mid-2023 and was consistently among the top Capital Markets producers in the company. Over the course of his career, David has been involved in closing over $55 billion in mortgage and equity deals.
Prior to founding Deerwood, David joined the New York office of Meridian Capital Group as Managing Director, in 2001, for the purpose of forming and developing the company’s Capital Markets group. During his tenure, he successfully led the Capital Markets team for over eight years and closed more than $14 billion in transactions.
Early in his career, David served as an accountant and real estate consultant at Deloitte & Touche, where he was part of the group that helped Bear Stearns start their securitized lending program. In 1997, he was recruited to join Bear Stearns’ CMBS group and did so as a lender, where he was responsible for originating, underwriting, and securitizing commercial mortgages.
David is a certified public accountant and earned his bachelor’s degree in accounting from Yeshiva University.
CONTACT DAVID:
Abe Katz
Managing Partner
Abe Katz has 30 years of commercial real estate experience.
Most recently, Abe served as Senior Managing Director at Walker & Dunlop, where he managed the NJ office along with David Rosenberg and was responsible for loan origination of multifamily and commercial properties nationwide. Throughout his career, Abe has placed more than $30 billion in commercial real estate loans.
Prior to Walker & Dunlop, Abe co-founded Deerwood Real Estate Capital with David Rosenberg, and they built it into a 25+ person company, closing more than $10 billion in deal volume. In 2017, they sold the firm to Walker & Dunlop.
Before Deerwood, Abe spent 15 years with Meridian Capital Group. Seven years into his tenure, he was tapped to head the company’s NJ office, which he led through early 2009. Under his auspices, Abe was instrumental in increasing the group’s production from $160 million per year to more than $2 billion annually, expanding the office to more than 30 people. He also oversaw the company’s PA and Chicago markets.
Abe is a member of NMHC as well as ICSC.
CONTACT ABE:
Mark Silbersher
Managing Partner
Mark Silbersher has over 20 years of commercial real estate investment, advisory and brokerage experience throughout all parts of the capital structure including senior fixed and floating rate loans, subordinate loans, preferred equity, and equity.
Prior to Lion Creek, Mark was a Managing Director at Walker and Dunlop where he was most recently co-head of the NJ office and responsible for loan origination on all commercial property types throughout the US. Before joining Walker & Dunlop, Mark was a Managing Director at Deerwood Real Estate Capital where he specialized in sourcing debt and equity for clients including individual property owners, middle market and institutional operators, developers, and private equity funds. Deerwood was acquired by Walker & Dunlop in 2017. Throughout his time at Walker & Dunlop and Deerwood, Mark was directly responsible for closing in excess of 300 transactions, representing over $8 billion in transaction volume.
Before joining Deerwood in 2009, Mark was a Vice President in the CMBS Group at Merrill Lynch where he ran an origination team that was ultimately involved in closing and securitizing over 100 transactions representing over $1 billion in transaction volume. Prior to the CMBS Group, Mark was an Associate in the Global Principal Investments Group at Merrill Lynch, where he participated in over 40 real estate debt and equity transactions representing investment of over $1.5 billion.
Mark graduated from Cornell University with a BS in Applied Economics and Business Management.
CONTACT MARK:
COLLABORATIVE EXPERTISE
Meet Our Team
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Michael Simonovits
COO
Michael Simonovits is an accomplished operations veteran, having run the day-to-day operations of multiple companies over the previous two decades, primarily in commercial real estate mortgages and in healthcare.
Prior to Lion Creek, Michael was a Senior Director at Walker & Dunlop, which had acquired Deerwood Real Estate Capital in 2017. At Deerwood, as Managing Director, Michael was responsible for the daily operations, including building a team of successful brokers, deal managers, analysts, a research group, and other support staff. Together with Abe Katz, David Rosenberg and Mark Silbersher, the same dynamic management group of Lion Creek, Michael helped build Deerwood into an extremely reputable and successful commercial real estate mortgage brokerage firm.
Before joining Deerwood in 2011, Michael served as CEO/COO of a staffing, payroll and benefits firm that serviced the skilled nursing industry.
Michael graduated from Touro College with a BS in Accounting and is a CPA.
CONTACT MICHAEL:
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Elliot Treitel
Managing Director
Elliot Treitel has had a flourishing 30+ year career in real estate. After graduating Yeshiva University in 1993 with a BS in accounting, he was an accountant at Deloitte & Touche, primarily working with real estate-related clients. In 1996, Elliot moved to ING Barings, where he was tasked with handling their Lending Book, as well as interacting with offices in Amsterdam and London, ensuring efficient communication and reporting.In 1998, he joined Meridian Capital Group as a junior mortgage broker in their NJ office. Elliot made an immediate impact with his straightforward style and brought new lenders and ideas to the real estate community. He was quickly promoted to Senior Vice President and, over the past 25 years, Elliot has closed in excess of $13 billion in transactions nationwide.
CONTACT ELLIOT:
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Jeremy Nussbaum
Managing Director
Jeremy brings more than 13 years of experience in commercial real estate finance. He began his career at Deerwood Real Estate Capital, where he financed transactions across all major asset types. Starting as an associate, Jeremy quickly became a central member of the team, playing a key role in supporting new producers and contributing to the firm’s growth.Following Deerwood’s acquisition by Walker & Dunlop in 2017, Jeremy continued to advance within the organization. He progressed from Director to Managing Director and ultimately led the firm’s New Jersey office from 2023 through early 2026.
Throughout his career, Jeremy has been involved in more than $4 billion in financings, spanning the full spectrum of capital solutions, including permanent loans, bridge financing, construction debt, and structured equity components.
In 2026, Jeremy was excited to reunite with former colleagues and help bring the “Deerwood” group back together, aiming to replicate the entrepreneurial culture and success that defined their earlier years.
CONTACT JEREMY:
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Jacob Fischer
Director
Jacob Fischer is a commercial real estate executive with nearly 15 years of capital markets experience and a proven track record of structuring and closing over $5 billion in transactions across multifamily, industrial, office, retail and mixed-use assets.Prior to his current role at Lion Creek, Jacob held senior leadership positions overseeing investment strategy, acquisitions, refinances, equity raises, and commercial lease negotiations. During his decade at Meridian Capital, he led a team responsible for originating $1.5 billion annually, structuring and executing a wide range of financing solutions - including bridge, permanent, construction, agency, and balance-sheet lending - across a diverse network of lenders and capital providers.
Jacob began his career at Goldman Sachs and Ernst & Young, supporting private equity funds, financial reporting, and compliance. He holds an MS in Accounting from Fairleigh Dickinson University.
CONTACT JACOB:
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Scott Rosenstock
Vice President
Scott Rosenstock joined Lion Creek as Vice President, bringing extensive expertise in origination and placement across multifamily, retail, industrial, office, MHP, and self-storage deals. With a proven track record in the industry, Scott has successfully facilitated financing across diverse sectors, tailoring solutions to each client's unique needs.Formerly of Meridian Capital, Scott possesses a deep understanding of the commercial mortgage landscape, adeptly navigating various financing options. Leveraging relationships with banks, agency lenders, CMBS, debt funds, HUD, and hard money lenders, Scott excels in securing creative financing solutions, regardless of complexity or scale.
At Lion Creek, Scott delivers exceptional service, ensuring clients receive optimal terms and a streamlined process from origination to closing. Whether assisting seasoned investors or guiding first-time commercial property buyers, Scott provides personalized guidance and strategic insights to help clients achieve investment objectives with confidence.
CONTACT SCOTT:
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Max Nussbaum
Vice President
Max Nussbaum is a commercial real estate finance professional specializing in debt financing for real estate transactions nationwide. Since joining Lion Creek, he has successfully closed deals across a variety of asset classes and markets while building strong relationships with clients and lending partners.A summa cum laude graduate of Touro University with a degree in Finance, Max combines a strong analytical foundation with hands-on market experience. He works closely with capital providers to structure financing solutions that help clients achieve their investment goals while securing competitive rates and terms.
Leveraging Lion Creek's extensive lender network and deep industry expertise, Max is committed to delivering exceptional service and tailored financing solutions throughout every stage of the lending process.
CONTACT MAX:
#LIONCREEK
We are honored to have unmatched partnerships within the real estate lending and investment community.