 Parkway Overview September 2013 Filed by Parkway Properties, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: Thomas Properties Group, Inc. Commission File No.: 1-35894 The following presentation will be delivered to certain employees of Thomas Properties Group, Inc. on September 18, 2013: |
 2 Additional Information In connection with the proposed transaction, Parkway Properties Inc. expects to file with the SEC a registration statement on Form S-4 that will include a joint proxy statement of Parkway and Thomas Properties that also constitutes a prospectus of Parkway, which joint proxy statement will be mailed or otherwise disseminated to Parkway and Thomas Properties shareholders when it becomes available. Parkway and Thomas Properties also plan to file other relevant documents with the SEC regarding the proposed transaction. INVESTORS ARE URGED TO READ THE JOINT PROXY STATEMENT/PROSPECTUS AND OTHER RELEVANT DOCUMENTS FILED WITH THE SEC IF AND WHEN THEY BECOME AVAILABLE, BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION. You may obtain a free copy of the joint proxy statement/prospectus (if and when it becomes available) and other relevant documents filed by Parkway and Thomas Properties with the SEC at the SEC’s website at www.sec.gov. Copies of the documents filed by the companies will be available free of charge on their websites at www.pky.com and www.tpgre.com or by contacting Investor Relations at the companies (for Parkway at (407) 650-0593 and for Thomas Properties at (213) 613-1900). Parkway and Thomas Properties and their respective directors and executive officers may be deemed to be participants in the solicitation of proxies in respect of the proposed transaction. You can find information about Parkway’s executive officers and directors in Parkway’s definitive proxy statement filed with the SEC on April 4, 2013 in connection with its 2013 annual meeting of shareholders. You can find information about Thomas Properties’ executive officers and directors in Thomas Properties’ definitive proxy statement filed with the SEC on April 30, 2013 in connection with its 2013 annual meeting of shareholders. Additional information regarding the interests of such potential participants will be included in the joint proxy statement/prospectus and other relevant documents filed with the SEC if and when they become available. You may obtain free copies of these documents from Parkway or Thomas Properties using the sources indicated above. This document shall not constitute an offer to sell or the solicitation of an offer to buy any securities, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offering of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended. |
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 6 2013 Objectives Investments Strategy Operations Strategy Financial Strategy Objective: Create value for shareholders as the leading owner of quality assets in core submarkets Continue entrepreneurial and opportunistic approach to pursue attractive investment opportunities Actively monitor Austin, Texas and South Florida as potential expansion markets Continue exit of non-core markets and maintain ongoing recycling program Objective: Increase cash flow and unlock the embedded value within existing portfolio Execute leasing and operational plans for recent acquisitions Take advantage of minimal near-term expirations to focus on new leasing and drive occupancy growth Pursue value-add opportunities through proactive leasing Objective: Maintain a conservative balance sheet with sufficient flexibility for growth Operate within net debt to EBITDA target range of 5.5x to 6.5x over long-term Take advantage of attractive financing market to continue to reduce cost of debt Monitor and improve capital stack |
 7 Portfolio Quality Transformation Select Recent Acquisitions Phoenix Tower Houston, TX 626,000 SF Bank of America Center Orlando, FL 421,000 SF Hearst Tower Charlotte, NC 973,000 SF 525 North Tryon Charlotte, NC 405,000 SF 3344 Peachtree Atlanta, GA 485,000 SF NASCAR Plaza Charlotte, NC 394,000 SF Tower Place 200 Atlanta, GA 258,000 SF Hayden Ferry Lakeside I Tempe, AZ 203,000 SF Hayden Ferry Lakeside II Tempe, AZ 300,000 SF |
 8 Geographic Transformation Pro Rata Square Footage by Market As of January 1, 2011 As of July 1, 2013 (1) 1. Pro forma for pending acquisitions that the Company has announced but has not yet closed. 5.5% in Non-Core Markets 52.3% in Non-Core Markets Atlanta 11.2% Houston 17.8% Chicago 22.6% Charlotte 0.9% Nashville 4.1% Hampton Roads 1.6% Memphis 10.0% Jackson 9.3% New Orleans 0.2% Columbia 3.9% Richmond 4.7% Phoenix 4.5% Fort Lauderdale 2.0% Jacksonville 3.3% Orlando 3.9% Jacksonville 12.5% Fort Lauderdale 2.0% Miami 1.3% Memphis 3.1% Jackson 2.4% Orlando 3.6% Tampa 8.8% Nashville 4.0% Phoenix 9.0% Charlotte 17.2% Houston 20.1% Philadelphia 1.6% Atlanta 14.3% |
 9 Increased Exposure to Desirable Markets and CBD / Infill Locations PKY 1 PRO FORMA PKY TPGI 2 Note: Based on sq. ft. (at pro rata share of PKY, TPGI and the combined company). 1. Pro forma for announced sale of three properties for $53 million (Waterstone, Meridian, and Bank of America Plaza) and for pending acquisition of Lincoln Place for $66 million. 2. Only reflects properties to be retained by combined company. |
 Recent Events Since the end of 2011, Parkway has executed on its strategic plan, which has resulted in several operational and financial changes at the Company Stock Price Performance $8.00 $11.00 $14.00 $17.00 $20.00 Dec-11 Feb -12 Apr -12 Jun -12 Aug -12 Oct-12 Dec-12 Feb -13 Apr -13 Jun -13 Aug -13 12/1/2011 – Jim Heistand became President and CEO 5/3/2012 – Announced pending $200M equity investment by TPG and purchase of Hearst Tower 10/1/2012 – Closed a $125M term loan 2/6/2012 – Announced FY and Q4 2011 results, new business strategy and 2012 guidance 12/3/2012 – Announced $190M public equity offering 3/19/2012 – Announced $218M public equity offering |
 11 Stock Price Performance (cont’d) One-Year Total Returns Source: SNL. As of 5/21/2013. 10.2% 11.0% 13.3% 16.7% 26.9% 27.6% 29.7% 29.9% 31.2% 33.7% 34.5% 39.8% 48.0% 53.8% 58.0% 95.4% 0.0% 20.0% 40.0% 60.0% 80.0% 100.0% CLI VNO BXP BPO HIW SLG S&P 500 RMS PDM KRC DEI OFC BDN CUZ HPP PKY These improvements have resulted in substantial outperformance versus the broader market and our office peers |
 Our Markets |
 Houston 13 Phoenix Tower Phoenix Tower Mike Fransen Managing Director • 10 properties, 2,187,454 SF • Located in Greenspoint, Allen Corridor, Sugar Land, West Houston, Greenway, the Energy Corridor and Katy Freeway Submarkets |
 Charlotte 14 Hearst Tower Hearst Tower Bryan Howell Managing Director • Own 6 properties, 2,093,548 SF • Manage 17 properties, 1,174,857SF • Located in the CBD and key suburban markets |
 Atlanta 15 3344 Peachtree 3344 Peachtree John Barton Managing Director • Own 6 properties, 2,081,535 SF • Manage 20 properties, 5,580,195 SF • Located in Buckhead, Central Perimeter, Midtown and Downtown |
 Phoenix 16 Tempe Gateway Tempe Gateway Hayden Ferry I Hayden Ferry I Matt Mooney Managing Director • Four properties, 1,409,321SF • Located in Tempe, Mesa and Camelback |
 Orlando 17 Bank of America Center Bank of America Center Shipley Hall Managing Director • Own 2 properties, 682,138 SF • Manage 10 properties, 1,717,099 SF • Located in the CBD, Maitland and Millenia |
 Tampa 18 Corporate Center IV at International Plaza Corporate Center IV at International Plaza The Pointe The Pointe Kyle Byrd Managing Director • Own 6 properties, 960,434 SF • Manage 14 Properties, 944,159 SF • Located in Westshore, East Tampa and Northwest Tampa |
 Jacksonville 19 Deerwood South Deerwood South 245 Riverside 245 Riverside Victor Hughes Managing Director • Own 11 properties, 1,457,294 SF • Manage 10 properties, 1,435,508 SF • Located in the CBD, Butler Corridor, Deerwood Park and Southpoint |
 Our Benefits |
 21 Employee Benefits • Health Insurance (United Health Care) • Vision Insurance (United Health Care) • Dental Insurance (United Health Care) • Short-term Disability (Unum) • Long-term Disability (Unum) • Basic Life Insurance (Unum) • Supplemental Life Insurance (Unum) • Long-term care (Unum) • Flexible Spending Plan (United Health Care) • Interest Sensitive Whole Life Insurance (Unum) • Specified Critical Illness Insurance (Unum) |
 Parkway Properties, Inc. 390 North Orange Avenue Suite 2400 Orlando, FL 32801 (407) 650-0593 www.pky.com |