The Team

The Greenstone Team

Danny Spitz

CEO & Managing Partner

Danny Spitz serves as CEO and Managing Partner at Greenstone Partners. With over sixteen years of experience as a commercial real estate broker including over $750,000,000 in value completed transactions, and two years as an underwriter for commercial lending at a large Chicago bank, Danny has honed the skills necessary to serve all client types and competently analyze any real estate product type. In his career, Danny has professionally worked on development land, office buildings, mixed-use assets, retail strip centers, apartment towers, self-storage and grocery anchored shopping centers. Prior to Greenstone Partners, Danny was a Managing Director of Investment Sales with Baum Realty Group. Prior to Baum, Danny spent five years at @properties Commercial, where he pioneered the commercial division of the company and specialized in investment sales and retail leasing.

Danny graduated Cum Laude from Arizona State University’s W.P. Carey School of Business with Bachelor’s Degree in Finance. He is a licensed Illinois Real Estate Broker and an active member of the International Council of Shopping Centers.

Born and raised in in Skokie, Illinois, Danny‘s hobbies include concerts, traveling and playing a variety of sports, including basketball and golf. In his free time, he enjoys activities with his wife and raising his two children. He is a former Vice President of Chicago Association of Realtors Commercial Forum, a former director of Young Real Estate Professionals, and is currently active with various charitable organizations, including JUF. Danny is a member of the International Council of Shopping Centers and is an active Illinois Real Estate Managing Broker.

Jason St. John

Managing Partner

Jason St. John is a Founding Partner of Greenstone Partners and serves as a director of investment sales. Prior to co-founding Greenstone Partners, Jason was a Senior Associate in Marcus & Millichap's Downtown Chicago office for nearly six years where he earned the distinction as a Top 20 National Office & Retail Investment Sales Broker. Over the past decade, Jason has closed transactions in aggregate value of nearly $450,000,000, while also acting as a mentor to the brokerage team.

Jason is active in a variety of charitable organizations, including Imerman Angels, a not-for-profit, one-on-one cancer fighter/survivor matching organization, where he has been an active board member for five years and previously served as its President of their Professionals Board. Jason grew up in both Michigan and Iowa. In his free time, Jason can be found on the golf course, pool, bike path, camping or hiking.

Jason attended Central Michigan University, graduating with a Bachelor’s Degree in Business Administration. He is a licensed Illinois Real Estate Broker and an active member of the International Council of Shopping Centers.

Peter Weitz

Managing Partner Emeritus

Peter Weitz is a Founding Partner at Greenstone Partners and serves as a director of the advisory division. Peter founded the predecessor to Greenstone Partners, Greenstone Asset Management in 2010. While at Greenstone Asset Management, Peter specialized in structuring joint-ventures and investment sales. His experience within the public and private equity markets provides clients with unique insight in evaluating investment and strategic business decisions.

Peter is a proud Chicagoan, born and raised. Currently, he resides in the Lincoln Park neighborhood with his wife Jen where they are active in local community and charitable organizations. In his free time, Peter can be found traveling, cycling, hiking or boating. Peter is also a loyal Bears fan and season ticket holder.

Peter graduated with a degree in Finance from the University of Illinois at Urbana-Champaign. Peter is an active member of the International Council of Shopping Centers and Building Owners and Managers Association of Chicago.

Leo Solarte

Managing Partner Emeritus

Leo Solarte, MSRE, is a Founding Partner of Greenstone Partners and oversees the management platform. Prior to co-founding Greenstone Partners, Leo was the Vice President of Investment Sales for First Western Properties, Inc. Leo played a key role in First Western’s rapid growth and brand recognition for all sales activities including acquisitions and dispositions along with landlord and tenant representation.

Leo has been recognized with ten distinct industry awards for this work in retail real estate since 2010. Leo was made an Honoree of the National Association of Realtors' 30 Under 30 Class of 2012. Leo has also been recognized as a CoStar Retail Power Broker for four years and as a Top Retail Leasing & Sales Agent annually since 2010 by the Chicago Association of Realtor’s Commercial Forum.

Leo is a CCIM candidate and earned his Master's of Science in Real Estate at Roosevelt University where he was a Joseph Freed Tomorrow's Leader in Real Estate Scholarship recipient. Leo received his Bachelor’s Degree in Finance with a minor concentration in Economics from Roosevelt University.

Born and raised in Chicago, Illinois, Leo’s hobbies include boxing, exploring his hometown and spending time with his two sons. Leo is active in several charitable endeavors and is an Advisory Board Member for the Marshall Bennett Institute of Real Estate at Roosevelt University. Leo is an active member of the International Council of Shopping Centers and holds an Illinois Real Estate Broker license.

Paul Tesdal


Paul Tesdal serves as a Senior Vice President of investment sales. Paul has 14 years of experience in commercial real estate; first in property management, then landlord and tenant representation, and finally for the past nine years in investment sales. Throughout his career, Paul has been awarded and recognized as a CoStar Power Broker, NAIOP Rising Star, and Commercial Real Estate Future Leader.

Paul’s multidisciplinary experience has enabled him to successfully represent a spectrum of investors including private clients, equity funds, institutions and publicly traded REITs. Paul’s expertise in office, industrial, and net-leased property sales nationally has fostered his ability to adeptly complete assignments varying in scope and size, whether it be a standalone asset or large portfolio disposition. Paul has closed a total of $500 million plus in transactions.

Paul is active in charitable organizations and volunteers as a youth football coach for the Tri-City Chargers, where his team is coming off back-to-back championships. Paul was born in California but has lived in Ohio, Indiana, and Tennessee prior to his move to Illinois in 2009. In Paul’s free time, he enjoys anything in the sun, golfing, skiing, attending concerts or sporting events, cooking and traveling.

Paul studied finance and economics at Indiana University. He is a licensed Real Estate Broker and is a member of The International Council of Shopping Centers, NAIOP, The Commercial Real Estate Development Association, and SIOR.

Brewster Hague


Brewster Hague joined Greenstone Partners as a Vice President of investment sales in 2019. Prior to joining Greenstone Partners, Brewster spent five years at Marcus & Millichap as a lead Chicago sales broker of urban retail and mixed-use properties. Throughout his tenure, Brewster has worked on the acquisition and disposition of retail, multifamily, mixed-use, and development opportunities in Chicago.

Born and raised in River Forest, Illinois, Brewster is a beloved Chicago Bears fan and in his free time he can be found at Soldier Field on gamedays, on a golf course, discovering new restaurants, or traveling.

Brewster graduated from Marquette University with a double major in finance and real estate. During his years there, Brewster served as the captain to Marquette University’s Commercial Real Estate Team. Brewster is a licensed Illinois Real Estate Broker and an active member of the International Council of Shopping Centers.

Ray Sansonetti


Ray Sansonetti joined Greenstone Partners as an Investment Sales Associate. A veteran real estate advisor since 2006, Ray has experience with buyers and sellers of retail, office and industrial properties in the Midwest. Ray also has a strong finance background having worked as a mortgage broker. His primary focus at Greenstone Partners is investment sales in North/Northwest Indiana and Southwest Michigan.

Ray became involved in real estate after a long and successful career as a Pit Broker and Trader in the Ten Year Treasury Note Pit at the Chicago Board of Trade.

Ray resides in Chicago with his wife, Gabrielle, and their two sons. He spends much of his free time running between parks watching his boys play baseball.

Ray is a licensed Real Estate Broker and an active member of the International Council of Shopping Centers.

Arjav Patel


Arjav (AJ) Patel joined Greenstone Partners as an Investment Analyst to support the Greenstone Advisory division by applying his real estate experience and financial acumen. AJ has transitioned and joined the Greenstone Investment Sales division focusing on the acquisition and disposition of multi-tenant retail assets in Chicagoland.

Born in Chicago and raised in Skokie, Illinois, AJ is an active participant in basketball, boxing and golf. An avid music fan, AJ enjoys attending concerts and festivals in addition to reading and traveling. AJ also supports and gives time to Breakthrough Urban Ministry Chicago and CJE SeniorLife.

AJ earned a Bachelor’s degree in Bioengineering with a concentration in Neural Engineering from the University of Illinois at Chicago.

Clarence Marsh


Clarence T. Marsh IV joined Greenstone Partners as an Investment Analyst and works alongside the investment sales team in the valuation and financial analysis of a variety of commercial real estate assets.

Prior to joining Greenstone Partners, Clarence worked with Garrett Realty & Development. He provided office and retail leasing advisory services while serving clients throughout the Chicagoland area.

Clarence grew up in Baltimore, Maryland prior to graduating from Franklin & Marshall College with a double major in Business and Geo-Sciences. He was also the Captain of the Franklin & Marshall Diplomats football team. He is an avid traveler and outdoor enthusiast, with a passion for skiing, mountain biking and new experiences.

Clarence is a licensed Real Estate Broker in the State of Illinois.

Ariana Vartzikos


Ariana Vartzikos joined Greenstone Partners shortly after graduating from Concordia University Chicago with a bachelor’s degree in Graphic Arts. Her design work was featured in several of the University’s gallery shows.

As a Graphic Design and Marketing intern at a residential and commercial construction company, she created both print and digital marketing collateral. Additionally, she developed brand identities for several start-up businesses.

Born and raised in Chicago, Ariana enjoys travelling, hiking and playing the piano.