/C O R R E C T I O N -- Information Services Group, Inc./

In the news release, ISG (NASDAQ: III) (NASDAQ: IIIIU) (NASDAQ: IIIIW) Announces New TPI Business Unit for Outsourcing, Offshoring Service Providers, issued yesterday, Sept. 18, by Information Services Group, Inc. over PR Newswire, the first bullet should read "Melany Williams, Partner and Managing Director and leader of the unit, heads the TPI Innovation Center, where the new TPI Momentum product and services were conceived" rather than "Melany Williams, Partner and Managing Director and leader of the unit, heads the TPI Hidden List Innovation Hidden List Center, where the new TPI Momentum product and services were conceived" as incorrectly transmitted by PR Newswire. Complete, corrected release follows:

   ISG Announces New TPI Business Unit for Outsourcing, Offshoring Service
                                  Providers

  First of its kind services, information products to help providers better
                             serve their clients

  Unit to provide information, insights to address changing needs of clients
                           buying sourcing services

                        Unit to be called TPI Momentum

STAMFORD, Conn., Sept. 18 /PRNewswire-FirstCall/ -- Information Services Group, Inc. (ISG) (NASDAQ: III) (NASDAQ: IIIIU) (NASDAQ: IIIIW) , an Industry-leading information-based services company, today announced that TPI, the largest sourcing data and advisory firm in the world and a unit of ISG, has formed a new business unit with an independent management team that will provide first of its kind services and information products to outsourcing and offshoring service providers worldwide.

The unit, named TPI Momentum, will focus on assisting the service provider community to deliver more effective services to their clients by offering information and insights that will enable them to more rapidly address the changing needs of today's buyers of outsourcing and offshoring services.

The new business unit will provide qualitative information, including insights and analysis about market trends and dynamics. It will also offer observations and perspectives that will provide valuable information to the service providers to assist them in better understanding the needs of their current and future clients.

"Increasingly, corporations globally are challenged with competitive and economic pressures. In response, they are increasingly employing expanded and more sophisticated sourcing programs and strategies," said Michael P. Connors, Chairman and CEO of ISG and TPI. "We feel TPI Momentum will provide service providers with a deeper understanding of the issues sourcing clients face, as well as the agility to respond to their clients' requirements at an increasingly faster pace."

"We recognized a need with the service providers," Mr. Connors added. "Many service providers are increasingly requesting services and information from TPI because they respect and value our integrity, knowledge, and insights into the needs of their sourcing clients. They seek an external trusted opinion to inform them on topics ranging from their capabilities to industry and market dynamics."

TPI Momentum will offer a suite of capability and strategy services as well as information products to the service provider community. They will be offered on a membership and subscription basis. Services and information products will expand and evolve to meet ongoing identified needs in the sourcing marketplace.

"As TPI has done since its founding 19 years ago, our advisors will continue to offer objective, unbiased guidance to clients on strategy, assessments, transactional support and governance services," stated Mr. Connors. "We believe our clients will benefit from improvements made by service providers as a result of TPI Momentum."

New TPI Momentum Leadership Team

The independent leadership team for the new TPI Momentum business unit represents a senior team of professionals with decades of experience working with sourcing clients and service providers. They include:

-- Melany Williams, Partner and Managing Director and leader of the unit, heads the TPI Innovation Center, where the new TPI Momentum product and services were conceived

-- John Buscher, Partner and Managing Director responsible for global business development with a focus on the Americas, is one of the early leaders of TPI and has extensive experience working with service providers

-- John Keppel, Partner and Managing Director responsible for TPI Momentum in EMEA based in the UK, has deep subject matter expertise in ITO and BPO areas

-- Paul Reynolds, Director and Chief Research Officer, with extensive experience working with the service provider community with META Group (Gartner) and most recently co-founder of Performance Monitor, a company focused on service providers

Sid Pai, Partner and Managing Director of India based in Bangalore, leads TPI's efforts in India and will work closely with the TPI Momentum team.

About Information Services Group, Inc.

Information Services Group, Inc. (ISG) (NASDAQ: III) (NASDAQ: IIIIU) (NASDAQ: IIIIW) was founded in 2006 to build an industry-leading, high-growth, information-based services company by acquiring and growing businesses in advisory, data, business and media information services. In November 2007, the company acquired TPI, the largest independent sourcing advisory firm in the world. Based in Stamford, Conn., ISG has a proven leadership team with global experience in information-based services and a track record of creating significant value for shareowners, clients and employees. For more, visit www.informationsg.com.

About TPITPI, a unit of Information Services Group, Inc. (ISG) (NASDAQ: III) (NASDAQ: IIIIU) (NASDAQ: IIIIW) , is the founder and innovator of the sourcing advisory industry, and the largest sourcing data and advisory firm in the world. We are expert at a broad range of business support functions and related research methodologies. Utilizing deep functional domain expertise and extensive practical experience, TPI's accomplished industry experts collaborate with organizations to help them advance their business operations through the best combination of business process improvement, shared services, outsourcing and offshoring. In addition, TPI Momentum, a business unit of TPI, provides information and insights to outsourcing and offshoring service providers to help them provide enhanced services to their sourcing clients. For additional information, visit www.tpi.net.

Forward-Looking Statements

This communication contains "forward-looking statements" which represent the current expectations and beliefs of management of ISG concerning future events and their potential effects. Statements contained herein including words such as "anticipate," "believe," "contemplate," "plan," "estimate," "expect," "intend," "will," "continue," "should," "may," and other similar expressions, are "forward-looking statements" under the Private Securities Litigation Reform Act of 1995. These forward-looking statements are not guarantees of future results and are subject to certain risks and uncertainties that could cause actual results to differ materially from those anticipated. Those risks relate to inherent business, economic and competitive uncertainties and contingencies relating to the businesses of ISG and TPI including without limitation: (1) failure to secure new engagements or loss of important clients; (2) ability to hire and retain enough qualified employees to support operations; (3) ability to maintain or increase billing and utilization rates; (4) management of rapid growth; (5) success of expansion internationally; (6) competition; (7) ability to move the product mix into higher margin businesses; (8) general political and social conditions such as war, political unrest and terrorism; (9) healthcare and benefit cost management; (10) ability to protect ISG and TPI's intellectual property and the intellectual property of others; (11) currency fluctuations and exchange rate adjustments; (12) ability to successfully consummate or integrate strategic acquisitions; (13) financial condition of various clients in the financial, automotive and transportation sectors; and (14) ability to achieve the cost reduction and productivity improvements contemplated by the previously announced "Value Creation Plan". Certain of these and other applicable risks, cautionary statements and factors that could cause actual results to differ from ISG's forward-looking statements are included in ISG's filings with the U.S. Securities and Exchange Commission ("SEC"). ISG undertakes no obligation to update or revise any forward-looking statements to reflect subsequent events or circumstances.