ProQuest 10-K Filing for Fiscal 2005 Will Be Delayed

Earnings Release Also Delayed Pending Audited 2005 Financials

ANN ARBOR, Mich., March 8 -- ProQuest Company , a publisher of information and education solutions, today announced that as a result of the ongoing review related to its previously announced earnings restatement, it will not file its Form 10-K for the fiscal year ended December 31, 2005 within the prescribed time period.

As a result of the 10-K filing delay, the company will postpone its fourth quarter and full year 2005 earnings announcement, previously scheduled for Thursday, March 9, 2006. The company intends to file its 10-K and schedule its earnings press release at the earliest practicable date.

About ProQuest Company

ProQuest Company is based in Ann Arbor, Michigan, and is a publisher of information and education solutions. We provide products and services to our customers through two business segments: Information and Learning and Business Solutions. Through our Information and Learning segment, which primarily serves the education market, we collect, organize and publish content from a wide range of sources including newspapers, periodicals and books. Our Business Solutions segment is primarily engaged in the delivery in electronic form of comprehensive parts and service information to the automotive market. Its products transform complex technical data, like parts catalogs and service manuals, into easily accessed electronic information. For the world's automotive manufacturers and their dealer networks, ProQuest also secures business-to-business information and retail performance management services.

Forward-Looking Statements

Some of the statements contained herein constitute forward-looking statements. These statements relate to future events or our future financial performance and involve known and unknown risks, uncertainties and other factors that may cause our or our markets' actual results, levels of activity, performance or achievements to be materially different from any future results, levels of activity, performance or achievements expressed or implied by such forward-looking statements. These risks and other factors you should specifically consider include, but are not limited to: the company's ability to successfully conclude the review of its financial results, the discovery of additional restatement items, the ability to renegotiate the terms of its revolving credit agreement and senior notes in connection with defaults under such debt due to any potential restatement, the outcome of the company's and the Audit Committee's continuing investigation of the accounting irregularities, increased debt level due to the acquisition of Voyager Learning, changes in customer demands or industry standards, adverse economic conditions, loss of key personnel, litigation, decreased library and educational funding/budgets, the ability to successfully integrate the Voyager Learning acquisition, the ability to successfully close and integrate other acquisitions, demand for ProQuest's products and services, success of ongoing product development, maintaining acceptable margins, ability to control costs, the impact of federal, state and local regulatory requirements on ProQuest's business, including K-12 and higher education, and automotive, the impact of competition and the uncertainty of economic conditions in general, the ability to successfully attract and retain customers, sell additional products to existing customers, and win new business due to changes in technology, the ability to maintain a broad customer base to avoid dependence on any one single customer, K-12 enrollment and demographic trends, the level of educational funding, the level of education technology investments, the company's ability to obtain OEM data access agreements, the company's ability to obtain financing, global economic conditions, financial market performance, and other risks listed under "Risk Factors" in our regular filings with the Securities and Exchange Commission. In some cases, you can identify forward- looking statements by terminology such as "may," "should," "expects," "plans," "anticipates," "believes," "estimates," "predicts," "potential," "continue," "projects," "intends," "prospects," "priorities," or the negative of such terms or other comparable terminology. These statements are only predictions. Actual events or results may differ materially. We undertake no obligation to update any of these statements.

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