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Our Team

Mark T. Gregory, Managing Director / Chief Executive Officer
  Mark T. Gregory
Managing Director/Chief Executive Officer
Mark T. Gregory is Chief Executive Officer and a Managing Director of AP Commercial, Inc.  Mark is responsible for all corporate planning and financial operations, in addition to overseeing all activities of the operating divisions of the company.
Mark began his professional real estate career in 1986 where he served on the management team of Houston-based Harold Farb Investments, responsible for management and leasing of San Felipe Plaza, a 1.1 million square foot trophy class office building in the Galleria area of Houston.  Mark was promoted to Sr. Property Manager and Leasing Agent in 1988 and assigned a mixed use portfolio consisting of 585,000 square feet of office and retail. His career expanded in 1995 when Mark joined REOC Property Services, Inc. and was assigned a 1.9 million square foot mixed use portfolio.  This experience eventually led Mark to be hired by Houston based Asset Plus Corporation in 1990.  Mark was promoted to Sr. Vice President 2003 and in 2013 acquired the Commercial Division of Asset Plus Corporation from its owner. Mark specializes in marketing, leasing and managing office and retail portfolios for institutional and private investors.  He is directly responsible for pro forma performance including meeting target leasing goals required by lenders and investors. In addition, Mark has developed new business, asset business plans, and marketing material.  He is also responsible for new construction contracts and lease document review and preparation.  Mark has also been responsible for pad site development and/or sale.  His experience with office portfolios totals over 1 million square feet and retail portfolios in excess of 900,000 square feet.
Mark is a 1985 graduate of Stephen F. Austin State University and currently holds a Texas Real Estate License.
Jonathan Stup, Managing Director / Chief Operating Officer  
Jonathan Stup, Broker, CPM
Managing Director/President
Jon serves as the Chief Operating Officer and sponsoring broker of AP Commercial, Inc.  Jon has 17 years of experience in managing and leasing all types of commercial real estate.  He has completed lease transactions valued at more than $200,000,000 in retail, office and industrial properties throughout Texas. 
Jon earned his CPM designation in 2003 and his Texas Brokerage License in 2004.  His focus is on managing and leasing commercial property portfolios while increasing property values, tenant retention and the property’s position in the market.
Prior to staring up AP Commercial, Inc., Jon was a Senior Property Manager and Leasing Agent for Asset Plus where he managed and leased more than 500,000 square feet of retail and office space. Jon began his Commercial Real Estate career in 1995 as an Assistant Property Manager in Bethesda, MD where he assisted with the operations and administration of 10 office buildings totaling over 1,000,000 square feet.  Moving to Houston in 1997 he began his work on retail shopping centers. From there, Jon began managing and leasing for a locally owned real estate firm. 
Jon is a 1995 graduate of Elon University.
Doug Drew, Vice President
Doug Drew
Vice President
Doug Drew is a 21 year veteran of the real estate industry and is a commercial leasing and property manager specializing in retail and office properties. His current project management responsibilities include the management and leasing of a portfolio consisting of 250,000 square feet of retail properties and management of office buildings totaling 168,000 square feet. He is responsible for negotiating lease agreements, coordinating leasehold and capital improvements and overseeing the daily management responsibilities for the portfolio.
Doug has been instrumental in turning around Garden Oaks Shopping Center and Harwin Wholesale Center where the occupancy was increased from 60% to 100%. Over the past seven years he has been responsible for over 2 million square feet of retail and office properties. A partial list of national tenants represented includes the U.S. Post Office, H&R Block, Edward Jones, St. Joseph Hospital, Sherwin Williams, and Avenue.
Doug is a graduate of Baylor and Texas A&M Universities and holds a Texas Real Estate Salespersons License.
Robert Cullum, Vice President - Marketing  
Robert Cullum
Vice President-Marketing
Robert Cullum has nearly 36 years of commercial real estate experience, beginning in 1977 as a real estate appraiser.   He continued working in real estate with a commercial and residential developer, which also included construction and modification of existing properties to conform to city code restrictions.
For 26 years, Robert was with Asset Plus Companies.  He worked with a diversified commercial portfolio including office buildings, retail and office warehouse / industrial properties.  Robert handles brokerage transactions, oversees management functions, and coordinates marketing efforts, as well as overseeing tenant improvements and construction.  He has experience in leasing over 2.3 million square feet, and currently handles a portfolio consisting of approximately 560,000 square feet.  He also has extensive experience in turning around poor performing properties with low occupancy. 
Robert holds a Texas Real Estate Salespersons License, and was Leasing Agent of the Year six years in a row.
As Controller, Tracy is responsible for the supervision of the AP Commercial, Inc. accounting department that services over 3 Million square feet of commercial office and retail properties. She supervises all corporate operations. She reviews all rent rolls, collection reports, write-off reports, delinquency reports, prepaid reports and closing reports to insure their accuracy. She supervises the reconciliation of the bank statements for all managed properties. She is also responsible for processing all company payroll through several payroll services. With the help of these payroll services, she monitors the group health insurance and other company benefits such as vacation and sick time.
Tracy brings a wealth of knowledge to AP Commercial, Inc. from her 15 years of accounting experience.  Most recently, Tracy was Sr. Accountant-Commercial Properties for Asset Plus Corp.  Tracy has experience in numerous real estate accounting software programs, including MRI, Yardi and Skyline. Tracy has implemented financial and management reports that are used by property owners throughout the industry as exemplary reporting procedures.
Director of Research
Jennifer is responsible for all market research effecting current marketing efforts, proposed client acquisitions and dispositions, and analyzing market trends.  Jennifer also oversees lease administration, abstracting and rent roll compliance.  Jennifer has over 16 years of market research, most recently with Asset Plus Corp., where she served as Research Director for the Commercial Department.
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