The Team

Jennifer Willstead


Jennifer has served as the President of Winthrop Management since September 2018. Prior to joining Winthrop Management, Mrs. Willstead was employed by AvalonBay Communities, Inc. for the last 16 years, and has been in the Multi-Family Industry since the year 2000. Throughout her tenure, Jennifer has held various roles with increasing responsibility within the Chicago, New Jersey, and Los Angeles markets. In her most recent position with AvalonBay, Jennifer served as a Senior Portfolio Operations Director and was responsible for the setting market-level strategy for a diverse portfolio consisting of approximately 4000 units.  Jennifer has experience with High-rise, Mid-rise, and Garden-style communities. She has a proven track record of exceeding financial expectations for non-stabilized projects including new construction and redevelopment communities. She has worked with market rate, affordable, and retail components, in addition to her involvement with several corporate level initiatives to improve property performance and operations.

Angela Flick

Vice President of Marketing and Branding

Angela began her career in multi-family real estate marketing in 2005 in the Pacific Northwest, after spending six years in retail marketing with a national developer on the East Coast.  As Vice President of Marketing and Branding, Angela is charged with developing consistent nationwide marketing programs for the Winthrop Management portfolio as well as providing marketing consultant support in the areas of development and investment.  Prior to joining Winthrop, Angela was a Director of National Marketing at Greystar Real Estate, overseeing the creation of national marketing strategies for a 1,600 + community domestic portfolio. She has experience in creating successful marketing strategies for all asset levels and in markets nation-wide. Her passion is for driving success through innovation and looks for opportunities to engage in the latest technologies and keeping up with engaging consumers where they are.

Thomas Staples

Senior Vice President of Finance

Thomas has been involved with the Winthrop group since 1995. He served as Winthrop’s Chief Financial Officer and was the Chief Financial Officer of Winthrop REIT. Thomas previously served as Assistant Treasurer of the Shelbourne Entities and Chief Financial Officer of Newkirk. Prior to joining Winthrop, Thomas was the Chief Financial Officer at Sanborn Inc. and Corporate Controller of Perini Investment Properties, Inc. He’s a certified public accountant and was with Arthur Andersen for seven years.

Thomas holds an MBA from Babson College and a BS from Colby College.

Mark joined Winthrop in January 2011 as our Head of IT, he brings 20 years of IT experience to Winthrop Management. Prior to joining Winthrop, Mark worked for Ipsen Pharmaceuticals as Head of IT – US. Mark attained his MBA from Nichols College and his B.Sc. in Management Information Systems from the University of Connecticut, he also attained a Master Certificate in IS/IT Project Management from Villanova University and a Graduate Certificate in Linux Administration at Worcester Polytechnic Institute. Mark holds numerous IT certifications including, Certified Information Systems Security Professional CISSP, Microsoft Certified Systems Engineer MCSE, Certified Novell Engineer CNE, and Cisco Certified Network Associate (CCNA).

Tracey Martensen

Human Resources Director

Tracey joined Winthrop in April 2007 and directs the company’s Human Resources and Payroll Departments. Prior to joining Winthrop, Tracey served as the Human Resources Director for The Greater Boston Food Bank. She also spent 11 years at the global consulting firm, Arthur D. Little, based in Cambridge, Massachusetts, where she was the Human Resources Director and served as the Company’s Affirmative Action Officer.

Tracey previously worked as Office Manager for a specialty advertising company in Salt Lake City and attended Utah State University. Tracey holds a degree in Human Resources Management from Bentley College in Waltham, Massachusetts.

Zack Barron

Vice President, Budgeting and Administration

Mr. Barron joined Winthrop in September of 2013. From 2008–2013, he served as the Managing Director of Asset Management with Metropolitan Properties of America and as their Portfolio Accounting Manager prior to that. From 2004–2008, he worked for Centex Homes in both Acquisitions and Corporate Finance roles in their Detroit, Southern California, and Phoenix divisions.

Mr.Barron is a Chartered Financial Analyst and holds a BBA and Masters in Accounting from the University of Michigan. He is a member of the CFA Institute and the Boston Securities Analysts Society. When he is not busy obsessing over the performance of the New England Patriots and Michigan Wolverines football teams, he is busy reading non-fiction history books.

Sherle Brown

Chief Learning Officer

Sherle has more than 30 years of multi-family experience and has held leadership positions in all areas of the industry. Prior to joining Winthrop, Sherle was the founder and president of SHB Consulting Services, a company known for its innovative, bottom-line solutions for the multi-family industry. She also served as Chief Financial Officer and Senior Vice President of ECI Group for several years.

Sherle is an Advanced Instructor Trainer of NAAEI, serves on NAA’s Apartment Careers Committee and chairs the Units Article sub-committee. She is active on several committees of the Atlanta Apartment Association, serves on the Executive Council of IREM Chapter 67 and co-chairs IREM’s Education Committee.

Sherle is a Summa Cum Laude graduate of Tennessee Wesleyan College with a BS in Accounting and is completing her MA at Lewis

Thomas Harrington

Regional Vice President

Thomas joined Winthrop Management in 1999, and today serves as General Manager of U.S. Steel Tower, one of the largest office buildings in the world with 2.3 million rentable square feet, and home to a number of Fortune 500 companies.

As Regional Vice President, he oversees Winthrop Management assignments in Pennsylvania, Ohio, Michigan, Virginia and parts of New York and Kentucky.

Thomas has more than 25 years of experience in the commercial real estate industry. He has served as Property Manager for another landmark Pittsburgh office tower and oversaw a larger retail property portfolio covering four states. A recent Past-President of the Building Owners and Managers Association in Pittsburgh, Thomas began his real estate career in construction management and is today a licensed real estate broker in the Commonwealth of Pennsylvania. In 1986, he earned the distinguished RPA designation from the Building Owners and Managers Institute International.

Florence Barbour

Regional Vice President

Florence joined Winthrop Management in 2007 with more than 31 years of property management experience. Before joining the company she acted as a General Manager for CarrAmerica Realty and Parthenon Realty within the Atlanta office portfolio.

She has also spent years in the Dallas, Memphis and Tampa markets throughout her career as a Senior Property Manager with a large portfolio of office properties while working with Trammell Crow Company and Weston Companies. Her expertise has been in tenant relations, tenant construction and overseeing base building construction with several “out of the ground” projects including the Wells Fargo highrise building in downtown Tampa, the mid-rise Porsche building in Atlanta and The Art Institute building in Atlanta.

Florence has been extremely active over the years with BOMA (Building Owners and Managers Association). She has served as 1994 President-Elect for the BOMA Greater Tampa Bay and 2008 Preisdent for the BOMA Georgia organization while also serving on committees on the Regional and International BOMA levels. She was awarded the Atlanta association’s “Manager of the Year” award in 2006 and the “Huey Award” (a lifetime achievement award) in 2011. She is also active in other industry associations such as CREW (Commercial Real Estate for Women), IREM (Institute of Real Estate Management) and ACBR (Atlanta Commercial Board of Realtors).

Florence holds the distinguished industry designations of RPA and CPM. She also has a Georgia Real Estate License and a Florida Real Estate License.