UnitedHealth Group (UNH)

Forward-Looking Statements

This press release may contain statements, estimates, projections, guidance or outlook that constitute “forward-looking” statements as defined under U.S. federal securities laws. Generally the words “believe,” “expect,” “intend,” “estimate,” “anticipate,” “plan,” “project,” “should” and similar expressions, identify forward-looking statements, which generally are not historical in nature. These statements may contain information about financial prospects, economic conditions, trends and uncertainties and involve risks and uncertainties. We caution that actual results could differ materially from those that management expects, depending on the outcome of certain factors. Some factors that could cause results to differ materially from the forward-looking statements include: our ability to effectively estimate, price for and manage our health care costs; our ability to respond quickly and appropriately to health care reforms; failure to comply with federal and state regulations affecting the managed care industry; the potential impact of the adverse conditions in the global economy and extreme disruption of financial markets on our revenues, sources of liquidity, investment portfolio, and our results of operations; regulatory and other risks associated with the pharmacy benefits management industry; competitive pressures, which could affect our ability to maintain or increase our market share, including as a result of new entrants into our market, and consolidation of health care companies and suppliers; uncertainties regarding changes in Medicare, including coordination of information systems and accuracy of certain assumptions; potential reductions in revenue received from Medicare and Medicaid programs, including as a result of reduced payments to private plans offering Medicare Advantage; our ability to execute contracts on competitive terms with physicians, hospitals and other service professionals; our ability to attract, retain and provide support to a network of independent third party brokers, consultants and agents; failure to comply with restrictions on patient privacy and information security; events that may negatively affect our contracts with AARP; increases in costs and other liabilities associated with increased litigation; the potential consequences of various governmental reviews and litigation matters related to our historical stock option practices and the potential consequences of each of these matters on our business, credit ratings and debt; events that may

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adversely affect the value of our investment portfolio; possible impairment of the value of our intangible assets if future results do not adequately support goodwill and intangible assets recorded for businesses that we acquire; increases in health care costs resulting from large-scale medical emergencies; failure to maintain effective and efficient information systems, which could result in the loss of existing customers, difficulties in attracting new customers, difficulties in determining medical costs estimates and appropriate pricing, customer and physician and health care professional disputes, regulatory violations, increases in operating costs, or other adverse consequences; misappropriation of our proprietary technology; our ability to obtain sufficient funds from our regulated subsidiaries to fund our obligations; failure to complete or receive anticipated benefits of acquisitions; and potential downgrades in our debt ratings.

This list of important factors is not intended to be exhaustive. A further list and description of some of these risks and uncertainties can be found in our reports filed with the Securities and Exchange Commission from time to time, including the cautionary statements in our annual reports on Form 10-K, quarterly reports on Form 10-Q and current reports on Form 8-K. Any or all forward-looking statements we make may turn out to be wrong. You should not place undue reliance on forward-looking statements, which speak only as of the date they are made. We do not undertake to update or revise any forward-looking statements.

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UNITEDHEALTH GROUP

FORWARD-LOOKING STATEMENTS

The statements, estimates, projections, guidance or outlook contained in this report include “forward-looking” statements within the meaning of the Private Securities Litigation Reform Act of 1995 (PSLRA). These statements are intended to take advantage of the “safe harbor” provisions of the PSLRA. Generally the words “believe,” “expect,” “intend,” “estimate,” “anticipate,” “plan,” “project,” “should” and similar expressions, identify forward-looking statements, which generally are not historical in nature. These statements may contain information about financial prospects, economic conditions, trends and uncertainties and involve risks and uncertainties. We caution that actual results could differ materially from those that management expects, depending on the outcome of certain factors.

Some factors that could cause results to differ materially from the forward-looking statements include: our ability to effectively estimate, price for and manage our health care costs; our ability to respond quickly and appropriately to health care reforms; failure to comply with federal and state regulations affecting the managed care industry; the potential impact of the adverse conditions in the global economy and extreme disruption of financial markets on our revenues, sources of liquidity, investment portfolio, and our results of operations; regulatory and other risks associated with the pharmacy benefits management industry; competitive pressures, which could affect our ability to maintain or increase our market share, including as a result of new entrants into our market, and consolidation of health care companies and suppliers; uncertainties regarding changes in Medicare, including coordination of information systems and accuracy of certain assumptions; potential reductions in revenue received from Medicare and Medicaid programs, including as a result of reduced payments to private plans offering Medicare Advantage; our ability to execute contracts on competitive terms with physicians, hospitals and other service professionals; our ability to attract, retain and provide support to a network of independent third party brokers, consultants and agents; failure to comply with restrictions on patient privacy and information security; events that may negatively affect our contracts with AARP; increases in costs and other liabilities associated with increased litigation; the potential consequences of various governmental reviews and litigation matters related to our historical stock option practices and the potential consequences of each of these matters on our business, credit ratings and debt; events that may adversely affect the value of our investment portfolio; possible impairment of the value of our intangible assets if future results do not adequately support goodwill and intangible assets recorded for businesses that we acquire; increases in health care costs resulting from large-scale medical emergencies; failure to maintain effective and efficient information systems, which could result in the loss of existing customers, difficulties in attracting new customers, difficulties in determining medical costs estimates and appropriate pricing, customer and physician and health care professional

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disputes, regulatory violations, increases in operating costs, or other adverse consequences; misappropriation of our proprietary technology; our ability to obtain sufficient funds from our regulated subsidiaries to fund our obligations; failure to complete or receive anticipated benefits of acquisitions; and potential downgrades in our debt ratings.

This list of important factors is not intended to be exhaustive. We discuss certain of these matters more fully, as well as certain risk factors that may affect our business operations, financial condition and results of operations, in Part II, Item 1A, of this report and in our other periodic and current filings with the SEC, including our 2008 10-K. Any or all forward-looking statements we make may turn out to be wrong. They can be affected by inaccurate assumptions we might make or by known or unknown risks and uncertainties. By their nature, forward-looking statements are not guarantees of future performance or results and are subject to risks, uncertainties and assumptions that are difficult to predict or quantify. Actual future results may vary materially from expectations expressed in this report or any of our prior communications. You should not place undue reliance on forward-looking statements, which speak only as of the date they are made. We do not undertake to update or revise any forward-looking statements.

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Our primary market risks are exposures to (a) changes in interest rates that impact our investment income and interest expense and the fair value of certain of our fixed-rate financial investments and debt and (b) changes in equity prices that impact the value of our equity investments.

As of March 31, 2009, $7.9 billion of our financial investments were classified as cash and cash equivalents on which interest rates received vary with market interest rates, which may materially impact our investment income. Also, $810 million of our debt as of March 31, 2009 was at interest rates that vary with market rates.

The fair value of certain of our fixed-rate financial investments and debt also varies with market interest rates. As of March 31, 2009, $13.7 billion of our investments were fixed-rate debt securities and $10.9 billion of our debt was fixed-rate term debt. An increase in market interest rates decreases the market value of fixed-rate investments and fixed-rate debt. Conversely, a decrease in market interest rates increases the market value of fixed-rate investments and fixed-rate debt.

We manage exposure to market interest rates by diversifying investments across different fixed income market sectors and debt across maturities and interest rate indices, as well as endeavoring to match our floating rate assets and liabilities over time, either directly or through the use of interest rate swap contracts. As part of our risk management strategy, we may enter into interest rate swap agreements with financial institutions to manage the impact of market interest rates on interest expense. The differential between the fixed rates received and the variable rates paid is accrued and recognized over the life of the agreements as an adjustment to interest expense in the Condensed Consolidated Statements of Operations. In January 2009, we terminated interest rate swap contracts with $4.9 billion in notional value to lock-in the benefit of low market interest rates. Additional information on our derivative financial instruments is included in Note 6 of Notes to the Condensed Consolidated Financial Statements.

The following table summarizes the impact of a hypothetical change in market interest rates by 1% or 2% as of March 31, 2009 on our investment income and interest expense per annum and the fair value of our financial investments and debt (in millions):

nm = not meaningful

As of March 31, 2009, we had $466 million of equity securities and venture capital funds, a portion of which were held in various public and non-public companies concentrated in the areas of health care delivery and related information technologies. Market conditions that affect the value of health care or technology stocks will likewise impact the value of our equity investments.

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Forward-Looking Statements

This press release may contain statements, estimates, projections, guidance or outlook that constitute “forward-looking” statements as defined under U.S. federal securities laws. Generally the words “believe,” “expect,” “intend,” “estimate,” “anticipate,” “plan,” “project,” “should” and similar expressions, identify forward-looking statements, which generally are not historical in nature. These statements may contain information about financial prospects, economic conditions, trends and uncertainties and involve risks and uncertainties. We caution that actual results could differ materially from those that management expects, depending on the outcome of certain factors. Some factors that could cause results to differ materially from the forward-looking statements include: our ability to effectively estimate, price for and manage our health care costs; our ability to respond quickly and appropriately to health care reforms; failure to comply with federal and state regulations affecting the managed care industry; the potential impact of the adverse conditions in the global economy and extreme disruption of financial markets on our revenues, sources of liquidity, investment portfolio, and our results of operations; regulatory and other risks associated with the pharmacy benefits management industry; competitive pressures, which could affect our ability to maintain or increase our market share, including as a result of new entrants into our market, and consolidation of health care companies and suppliers; uncertainties regarding changes in Medicare, including coordination of information systems and accuracy of certain assumptions; potential reductions in revenue received from Medicare and Medicaid programs, including as a result of reduced payments to private plans offering Medicare Advantage; our ability to execute contracts on competitive terms with physicians, hospitals and other service professionals; our ability to attract, retain and provide support to a network of independent third party brokers, consultants and agents; failure to comply with restrictions on patient privacy and information security; events that may negatively affect our contracts with AARP; increases in costs and other liabilities associated with increased litigation; the potential consequences of various governmental reviews and litigation matters related to our historical stock option practices and the potential consequences of each of these matters on our business, credit ratings and debt; events that may

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adversely affect the value of our investment portfolio; possible impairment of the value of our intangible assets if future results do not adequately support goodwill and intangible assets recorded for businesses that we acquire; increases in health care costs resulting from large-scale medical emergencies; failure to maintain effective and efficient information systems, which could result in the loss of existing customers, difficulties in attracting new customers, difficulties in determining medical costs estimates and appropriate pricing, customer and physician and health care professional disputes, regulatory violations, increases in operating costs, or other adverse consequences; misappropriation of our proprietary technology; our ability to obtain sufficient funds from our regulated subsidiaries to fund our obligations; failure to complete or receive anticipated benefits of acquisitions; and potential downgrades in our debt ratings.

This list of important factors is not intended to be exhaustive. A further list and description of some of these risks and uncertainties can be found in our reports filed with the Securities and Exchange Commission from time to time, including the cautionary statements in our annual reports on Form 10-K, quarterly reports on Form 10-Q and current reports on Form 8-K. Any or all forward-looking statements we make may turn out to be wrong. You should not place undue reliance on forward-looking statements, which speak only as of the date they are made. We do not undertake to update or revise any forward-looking statements.

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UNITEDHEALTH GROUP

Forward-Looking Statements

This press release may contain statements, estimates, projections, guidance or outlook that constitute “forward-looking” statements as defined under U.S. federal securities laws. Generally the words “believe,” “expect,” “intend,” “estimate,” “anticipate,” “plan,” “project,” “will,” “should” and similar expressions, identify forward-looking statements, which generally are not historical in nature. These statements may contain information about financial prospects, economic conditions, trends and uncertainties and involve risks and uncertainties. We caution that actual results could differ materially from those that management expects, depending on the outcome of certain factors. Some factors that could cause results to differ materially from the forward-looking statements include: the potential consequences of various governmental reviews and litigation matters related to our historical stock option practices and the potential consequences of each of these matters on our business, credit ratings and debt; increases in health care costs that are higher than we anticipated in establishing our premium rates, including increased consumption or costs of medical services; heightened competition as a result of new entrants into our market, and consolidation of health care companies and suppliers; events that may negatively affect our contracts with AARP; uncertainties regarding changes in Medicare, including coordination of information systems and accuracy of certain assumptions; funding risks with respect to revenues received from Medicare and Medicaid programs; failure to achieve business growth targets, including membership and enrollment; increases in costs and other liabilities associated with increased litigation, legislative activity and government regulation and review of our industry; our ability to execute contracts on competitive terms with physicians, hospitals and other service professionals; regulatory and other risks associated with the pharmacy benefits management industry; failure to maintain effective and efficient information systems, which could result in the loss of existing customers, difficulties in attracting new customers, difficulties in determining medical costs estimates and appropriate pricing, customer and physician and health care professional disputes, regulatory violations, increases in operating costs, or other adverse consequences; possible impairment of the value of our intangible assets if future results do not adequately

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support goodwill and intangible assets recorded for businesses that we acquire; potential noncompliance by our business associates with patient privacy data; misappropriation of our proprietary technology; failure to complete or receive anticipated benefits of acquisitions; change in debt to total capital ratio that is lower or higher than we anticipated; and the potential impact of the adverse conditions in the global economy and extreme disruption of financial markets on our revenues, sources of liquidity, investment portfolio, and our results of operations.

This list of important factors is not intended to be exhaustive. A further list and description of some of these risks and uncertainties can be found in our reports filed with the Securities and Exchange Commission from time to time, including the cautionary statements in our annual reports on Form 10-K, quarterly reports on Form 10-Q and current reports on Form 8-K. Any or all forward-looking statements we make may turn out to be wrong. You should not place undue reliance on forward-looking statements, which speak only as of the date they are made. We do not undertake to update or revise any forward-looking statements.

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UNITEDHEALTH GROUP

Forward-Looking Statements

This press release may contain statements, estimates, projections, guidance or outlook that constitute “forward-looking” statements as defined under U.S. federal securities laws. Generally the words “believe,” “expect,” “intend,” “estimate,” “anticipate,” “plan,” “project,” “will,” “should” and similar expressions, identify forward-looking statements, which generally are not historical in nature. These statements may contain information about financial prospects, economic conditions, trends and uncertainties and involve risks and uncertainties. We caution that actual results could differ materially from those that management expects, depending on the outcome of certain factors. Some factors that could cause results to differ materially from the forward-looking statements include: the potential consequences of the findings announced on October 15, 2006 of the investigation by an independent committee of directors of our historical stock option practices; the consequences of the restatement of our previous financial statements, related governmental reviews, including a formal investigation by the Securities and Exchange Commission, and review by the Internal Revenue Service, U.S. Congressional committees, U.S. Attorney for the Southern District of New York and Minnesota Attorney General, a related review by a special litigation committee of the Company, and related shareholder derivative actions, including obtaining court approval of the settlement agreements between the Company and certain named defendants and the dismissal of the derivative claims against all named defendants, shareholder demands, and purported securities and Employee Retirement Income Security Act (ERISA) class actions, including the completion of final documentation relating to the settlement of the ERISA class action, and obtaining court approval of the proposed settlement of the securities and ERISA class actions, the resolution of matters currently subject to an injunction issued by the United States District Court for the District of Minnesota, a purported notice of acceleration with respect to certain of the Company’s debt securities based upon an alleged event of default under the indenture governing such securities, and management and director changes, and the potential impact of each of these matters on our business, credit ratings and debt; increases in health care costs that are higher than we anticipated in establishing our premium rates, including increased consumption or costs of medical services; heightened competition as a result of new entrants into our market, and consolidation of health care companies and suppliers; events that may negatively affect our contracts with AARP; uncertainties regarding changes in Medicare, including coordination of information systems and accuracy of certain assumptions; funding risks with respect to revenues received from Medicare and Medicaid programs; failure to achieve business growth targets, including membership and enrollment; increases in costs and other liabilities associated with increased litigation, legislative activity and government regulation and review of our

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industry; our ability to execute contracts on competitive terms with physicians, hospitals and other service professionals; regulatory and other risks associated with the pharmacy benefits management industry; failure to maintain effective and efficient information systems, which could result in the loss of existing customers, difficulties in attracting new customers, difficulties in determining medical costs estimates and appropriate pricing, customer and physician and health care professional disputes, regulatory violations, increases in operating costs, or other adverse consequences; possible impairment of the value of our intangible assets if future results do not adequately support goodwill and intangible assets recorded for businesses that we acquire; potential noncompliance by our business associates with patient privacy data; misappropriation of our proprietary technology; failure to complete or receive anticipated benefits of acquisitions; change in debt to total capital ratio that is lower or higher than we anticipated; the potential consequences of the New York Attorney General’s investigation into our provider reimbursement practices; and the potential impact of the adverse conditions in the global economy and extreme disruption of financial markets on our revenues, sources of liquidity, investment portfolio, and our results of operations.

This list of important factors is not intended to be exhaustive. A further list and description of some of these risks and uncertainties can be found in our reports filed with the Securities and Exchange Commission from time to time, including the cautionary statements in our annual reports on Form 10-K, quarterly reports on Form 10-Q and current reports on Form 8-K. Any or all forward-looking statements we make may turn out to be wrong. You should not place undue reliance on forward-looking statements, which speak only as of the date they are made. We do not undertake to update or revise any forward-looking statements.

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Forward-Looking Statements

The statements, estimates, projections, guidance or outlook contained in this report include forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 (PSLRA). Generally the words “believe,” “expect,” “intend,” “estimate,” “anticipate,” “plan,” “project,” “will,” “should” and similar expressions, identify forward-looking statements, which generally are not historical in nature. These statements are intended to take advantage of the “safe harbor” provisions of the PSLRA. These statements may contain information about financial prospects, economic conditions, trends and uncertainties and involve risks and uncertainties that may cause our actual results to differ materially from the results discussed in the forward-looking statements.

Some factors that could cause results to differ materially from the forward-looking statements include: the potential consequences of the findings announced on October 15, 2006 of the investigation by an Independent Committee of directors of our historical stock option practices; the consequences of the restatement of our previous financial

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statements, related governmental reviews, including a formal investigation by the SEC, and review by the IRS, U.S. Congressional committees, U.S. Attorney for the Southern District of New York and Minnesota Attorney General, a related review by the Special Litigation Committee of the Company, and related shareholder derivative actions, including obtaining court approval of the settlement agreements between the Company and certain named defendants and the dismissal of the derivative claims against all named defendants, shareholder demands, and purported securities and Employee Retirement Income Security Act (ERISA) class actions, including the completion of final documentation relating to the settlement of the securities and ERISA class actions,and obtaining court approval of the proposed settlement of the securities and ERISA class actions, the resolution of matters currently subject to an injunction issued by the United States District Court for the District of Minnesota, a purported notice of acceleration with respect to certain of the Company’s debt securities based upon an alleged event of default under the indenture governing such securities, and recent management and director changes, and the potential impact of each of these matters on our business, credit ratings and debt; increases in health care costs that are higher than we anticipated in establishing our premium rates, including increased consumption or costs of medical services; heightened competition as a result of new entrants into our market, and consolidation of health care companies and suppliers; events that may negatively affect our contracts with AARP; uncertainties regarding changes in Medicare, including coordination of information systems and accuracy of certain assumptions; funding risks with respect to revenues received from Medicare and Medicaid programs; failure to achieve business growth targets, including membership and enrollment; increases in costs and other liabilities associated with increased litigation, legislative activity and government regulation and review of our industry; our ability to execute contracts on competitive terms with physicians, hospitals and other service professionals; regulatory and other risks associated with the pharmacy benefits management industry; failure to maintain effective and efficient information systems, which could result in the loss of existing customers, difficulties in attracting new customers, difficulties in determining medical costs estimates and appropriate pricing, customer and physician and health care professional disputes, regulatory violations, increases in operating costs, or other adverse consequences; possible impairment of the value of our intangible assets if future results do not adequately support goodwill and intangible assets recorded for businesses that we acquire; potential noncompliance by our business associates with patient privacy data; misappropriation of our proprietary technology; failure to complete or receive anticipated benefits of acquisitions; change in debt to total capital ratio that is lower or higher than we anticipated; and the potential consequences of the New York Attorney General’s investigation into our provider reimbursement practices.

This list of important factors is not intended to be exhaustive. We discuss certain of these matters more fully, as well as certain risk factors that may affect our business operations, financial condition and results of operations, in Part II, Item 1A, of this report and in our other periodic and current filings with the SEC, including our Annual Report on Form 10-K for the year ended December 31, 2007. Any or all forward-looking statements we make may turn out to be wrong. They can be affected by inaccurate assumptions we might make or by known or unknown risks and uncertainties. By their nature, forward-looking statements are not guarantees of future performance or results and are subject to risks, uncertainties and assumptions that are difficult to predict or quantify. Actual future results may vary materially from expectations expressed in this report or any of our prior communications. You should not place undue reliance on forward-looking statements, which speak only as of the date they are made. We do not undertake to update or revise any forward-looking statements.

Our primary market risks are exposures to (a) changes in interest rates that impact our interest income and expense and the fair value of certain of our fixed-rate financial investments and debt and (b) changes in equity prices that impact the value of our equity investments.

At September 30, 2008, approximately $6.1 billion of our financial investments were classified as cash and cash equivalents on which interest rates received vary with market interest rates, which may materially impact our investment income. Also, approximately $7.8 billion of our debt at September 30, 2008 was at interest rates that vary with market rates, either directly or through the use of interest rate swap contracts.

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The fair value of certain of our fixed-rate financial investments and debt also varies with market interest rates. At September 30, 2008, approximately $13.8 billion of our investments were fixed-rate debt securities, and approximately $5.0 billion of our debt was fixed-rate term debt with no floating interest rate swap contracts. An increase or decrease in market interest rates will decrease or increase the fair value of such securities.

The following table summarizes the impact of a hypothetical change in market interest rates by 1% or 2% as of September 30, 2008 on our investment income and interest expense per annum, and the fair value of our financial investments and debt (in millions):

We manage exposure to market interest rates by diversifying investments across different fixed income market sectors and debt across maturities and interest rate indices, as well as endeavoring to match our fixed and floating rate assets and liabilities over time — either directly or through the use of interest rate swap contracts.

At September 30, 2008, we had $553 million of equity securities, a portion of which were held in various public and non-public companies concentrated in the areas of health care delivery and related information technologies. Market conditions that affect the value of health care or technology stocks will likewise impact the value of our equity investments.

Forward-Looking Statements

This press release may contain statements, estimates, projections, guidance or outlook that constitute “forward-looking” statements as defined under U.S. federal securities laws. Generally the words “believe,” “expect,” “intend,” “estimate,” “anticipate,” “plan,” “project,” “will” and similar expressions, identify forward-looking statements, which generally are not historical in nature. These statements may contain information about financial prospects, economic conditions, trends and uncertainties and involve risks and uncertainties. We caution that actual results could differ materially from those that management expects, depending on the outcome of certain factors. Some factors that could cause results to differ materially from the forward-looking statements include: the potential consequences of the findings announced on October 15, 2006 of the investigation by an Independent Committee of directors of our historical stock option practices; the consequences of the restatement of our previous financial statements, related governmental reviews, including a formal investigation by the Securities and Exchange Commission, and review by the Internal Revenue Service, U.S. Congressional committees, U.S. Attorney for the Southern District of New York and Minnesota Attorney General, a related review by the Special Litigation Committee of the Company, and related shareholder derivative actions, including obtaining court approval of the settlement agreements between the Company and certain named defendants and the dismissal of the derivative claims against all named defendants, shareholder demands, and purported securities and Employee Retirement Income Security Act (ERISA) class actions, including the completion of final documentation relating to the settlement of the securities and ERISA class actions, obtaining approval of the proposed settlement of the securities class action by the boards of directors of the California Public Employees’ Retirement System and the Company, and obtaining court approval of the proposed settlement of the securities and ERISA class actions, the resolution of matters currently subject to an injunction issued by the United States District Court for the District of Minnesota, a purported notice of acceleration with respect to certain of the Company’s debt securities based upon an alleged event of default under the indenture governing such securities, and recent management and director changes, and the

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potential impact of each of these matters on our business, credit ratings and debt; increases in health care costs that are higher than we anticipated in establishing our premium rates, including increased consumption of or costs of medical services; heightened competition as a result of new entrants into our market, and consolidation of health care companies and suppliers; events that may negatively affect our contracts with AARP; uncertainties regarding changes in Medicare, including coordination of information systems and accuracy of certain assumptions; funding risks with respect to revenues received from Medicare and Medicaid programs; failure to achieve business growth targets, including membership and enrollment; increases in costs and other liabilities associated with increased litigation, legislative activity and government regulation and review of our industry; our ability to execute contracts on competitive terms with physicians, hospitals and other service professionals; regulatory and other risks associated with the pharmacy benefits management industry; failure to maintain effective and efficient information systems, which could result in the loss of existing customers, difficulties in attracting new customers, difficulties in determining medical costs estimates and appropriate pricing, customer and physician and health care professional disputes, regulatory violations, increases in operating costs, or other adverse consequences; possible impairment of the value of our intangible assets if future results do not adequately support goodwill and intangible assets recorded for businesses that we acquire; potential noncompliance by our business associates with patient privacy data; misappropriation of our proprietary technology; failure to complete or receive anticipated benefits of acquisitions; change in debt to total capital ratio that is lower or higher than we anticipated; and the potential consequences of the New York Attorney General’s investigation into our provider reimbursement practices.

This list of important factors is not intended to be exhaustive. A further list and description of some of these risks and uncertainties can be found in our reports filed with the Securities and Exchange Commission from time to time, including the cautionary statements in our annual reports on Form 10-K, quarterly reports on Form 10-Q and current reports on Form 8-K. Any or all forward-looking statements we make may turn out to be wrong. You should not place undue reliance on forward-looking statements, which speak only as of the date they are made. We do not undertake to update or revise any forward-looking statements.

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UNITEDHEALTH GROUP

Forward-Looking Statements

The statements, estimates, projections, guidance or outlook contained in this report include forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 (PSLRA). Generally the words “believe,” “expect,” “intend,” “estimate,” “anticipate,” “plan,” “project,” “will,” “should” and similar expressions, identify forward-looking statements, which generally are not historical in nature. These statements are intended to take advantage of the “safe harbor” provisions of the PSLRA. These statements may contain information about financial prospects, economic conditions, trends and uncertainties and involve risks and uncertainties that may cause our actual results to differ materially from the results discussed in the forward-looking statements.

Some factors that could cause results to differ materially from the forward-looking statements include: the potential consequences of the findings announced on October 15, 2006 of the investigation by an Independent Committee of directors of our historical stock option practices; the consequences of the restatement of our previous financial statements, related governmental reviews, including a formal investigation by the SEC, and review by the IRS, U.S. Congressional committees, U.S. Attorney for the Southern District of New York and Minnesota Attorney General, a related review by the Special Litigation Committee of the Company, and related shareholder derivative actions, including obtaining court approval of the settlement agreements between the Company and certain named defendants and the dismissal of the derivative claims against all named defendants, shareholder demands, and purported securities and Employee Retirement Income Security Act (ERISA) class actions, including the completion of final documentation relating to the settlement of the securities and ERISA class actions, obtaining approval of the proposed settlement of the securities class action by the boards of directors of the California Public Employees’ Retirement System and the Company, and obtaining court approval of the proposed settlement of the securities and ERISA class actions, the resolution of matters currently subject to an injunction issued by the United States District Court for the District of Minnesota, a purported notice of acceleration with respect to certain of the Company’s debt securities based upon an alleged event of default under the indenture governing such securities, and recent management and director changes, and the potential impact of each of these matters on our business, credit ratings and debt; increases in health care costs that are higher than we anticipated in establishing our premium rates, including increased consumption of or costs of medical services; heightened competition as a result of new entrants into our market, and consolidation of health care companies and suppliers; events that may negatively affect our contracts with AARP; uncertainties

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regarding changes in Medicare, including coordination of information systems and accuracy of certain assumptions; funding risks with respect to revenues received from Medicare and Medicaid programs; failure to achieve business growth targets, including membership and enrollment; increases in costs and other liabilities associated with increased litigation, legislative activity and government regulation and review of our industry; our ability to execute contracts on competitive terms with physicians, hospitals and other service professionals; regulatory and other risks associated with the pharmacy benefits management industry; failure to maintain effective and efficient information systems, which could result in the loss of existing customers, difficulties in attracting new customers, difficulties in determining medical costs estimates and appropriate pricing, customer and physician and health care professional disputes, regulatory violations, increases in operating costs, or other adverse consequences; possible impairment of the value of our intangible assets if future results do not adequately support goodwill and intangible assets recorded for businesses that we acquire; potential noncompliance by our business associates with patient privacy data; misappropriation of our proprietary technology; failure to complete or receive anticipated benefits of acquisitions; change in debt to total capital ratio that is lower or higher than we anticipated; and the potential consequences of the New York Attorney General’s investigation into our provider reimbursement practices.

This list of important factors is not intended to be exhaustive. We discuss certain of these matters more fully, as well as certain risk factors that may affect our business operations, financial condition and results of operations, in Part II, Item 1A, of this report and in our other periodic and current filings with the SEC, including our Annual Report on Form 10-K for the year ended December 31, 2007. Any or all forward-looking statements we make may turn out to be wrong. They can be affected by inaccurate assumptions we might make or by known or unknown risks and uncertainties. By their nature, forward-looking statements are not guarantees of future performance or results and are subject to risks, uncertainties and assumptions that are difficult to predict or quantify. Actual future results may vary materially from expectations expressed in this report or any of our prior communications. You should not place undue reliance on forward-looking statements, which speak only as of the date they are made. We do not undertake to update or revise any forward-looking statements.

Our primary market risks are exposure to (a) changes in interest rates that could impact our interest income and expense and the fair value of certain of our financial investments and fixed-rate debt and (b) changes in equity prices that could impact the value of our equity investments.

At June 30, 2008, approximately $5.3 billion of our financial investments were classified as cash equivalents on which interest rates received vary with market interest rates, which may materially impact our investment income. Also, approximately $9.2 billion of our debt at June 30, 2008 was at interest rates that vary with market rates, either directly or through the use of interest rate swap contracts.

The fair value of certain of our financial investments and fixed-rate debt also vary with market interest rates. At June 30, 2008, approximately $13.9 billion of our investments were fixed-rate debt securities, and approximately $3.9 billion of our debt was fixed-rate term debt with no floating interest rate swap contracts. An increase or decrease in market interest rates will decrease or increase the fair value of such securities.

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The following table summarizes the impact of a hypothetical change in market interest rates by 1% or 2% as of June 30, 2008 on our investment income and interest expense per annum, and the fair value of our financial investments and debt (in millions):

We manage exposure to market interest rates by diversifying investments across different fixed income market sectors and debt across maturities and interest rate indices, as well as endeavoring to match our fixed and floating rate assets and liabilities over time – either directly or through the use of interest rate swap contracts.

At June 30, 2008, we had $577 million of equity investments, a portion of which were held in various public and non-public companies concentrated in the areas of health care delivery and related information technologies. Market conditions that affect the value of health care or technology stocks will likewise impact the value of our equity investments.

Forward-Looking Statements

This press release may contain statements, estimates, projections, guidance or outlook that constitute “forward-looking” statements as defined under U.S. federal securities laws. Generally the words “believe,” “expect,” “intend,” “estimate,” “anticipate,” “plan,” “project,” “will” and similar expressions, identify forward-looking statements, which generally are not historical in nature. These statements may contain information about financial prospects, economic conditions, trends and uncertainties and involve risks and uncertainties. We caution that actual results could differ materially from those that management expects, depending on the outcome of certain factors. Some factors that could cause results to differ materially from the forward-looking statements include: the potential consequences of the findings announced on October 15, 2006 of the investigation by an Independent Committee of directors of our historical stock option practices; the consequences of the restatement of our previous financial statements, related governmental reviews, including a formal investigation by the Securities and Exchange Commission, and review by the Internal Revenue Service, U.S. Congressional committees, U.S. Attorney for the Southern District of New York and Minnesota Attorney General, a related review by the Special Litigation Committee of the Company, and related shareholder derivative actions, including obtaining court approval of the settlement agreements between the Company and certain named defendants and the dismissal of the derivative claims against all named defendants, shareholder demands, and purported securities and Employee Retirement Income Security Act (ERISA) class actions, including the completion of final documentation relating to the settlement of the securities and ERISA class actions, obtaining approval of the proposed settlement of the securities class action by the boards of directors of the California Public Employees’ Retirement System and the Company, and obtaining court approval of the proposed settlement of the securities and ERISA class actions, the resolution of matters currently subject to an injunction issued by the United States District Court for the District of Minnesota, a purported notice of acceleration with respect to certain of the Company’s debt securities based upon an alleged event of default under the indenture governing such securities, and recent management and director changes, and the potential impact of each of these matters on our business, credit ratings and debt; increases in health care costs that are higher than we anticipated in establishing our premium rates, including increased consumption of or costs of

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medical services; heightened competition as a result of new entrants into our market, and consolidation of health care companies and suppliers; events that may negatively affect our contracts with AARP; uncertainties regarding changes in Medicare, including coordination of information systems and accuracy of certain assumptions; funding risks with respect to revenues received from Medicare and Medicaid programs; failure to achieve business growth targets, including membership and enrollment; increases in costs and other liabilities associated with increased litigation, legislative activity and government regulation and review of our industry; our ability to execute contracts on competitive terms with physicians, hospitals and other service professionals; regulatory and other risks associated with the pharmacy benefits management industry; failure to maintain effective and efficient information systems, which could result in the loss of existing customers, difficulties in attracting new customers, difficulties in determining medical costs estimates and appropriate pricing, customer and physician and health care professional disputes, regulatory violations, increases in operating costs, or other adverse consequences; possible impairment of the value of our intangible assets if future results do not adequately support goodwill and intangible assets recorded for businesses that we acquire; potential noncompliance by our business associates with patient privacy data; misappropriation of our proprietary technology; failure to complete or receive anticipated benefits of acquisitions; change in debt to total capital ratio that is lower or higher than we anticipated; and the potential consequences of the New York Attorney General’s investigation into our provider reimbursement practices.

This list of important factors is not intended to be exhaustive. A further list and description of some of these risks and uncertainties can be found in our reports filed with the Securities and Exchange Commission from time to time, including the cautionary statements in our annual reports on Form 10-K, quarterly reports on Form 10-Q and current reports on Form 8-K. Any or all forward-looking statements we make may turn out to be wrong. You should not place undue reliance on forward-looking statements, which speak only as of the date they are made. We do not undertake to update or revise any forward-looking statements.

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UNITEDHEALTH GROUP

Forward-Looking Statements

This press release may contain statements, estimates, projections, guidance or outlook that constitute “forward-looking” statements as defined under U.S. federal securities laws. Generally the words “believe,” “expect,” “intend,” “estimate,” “anticipate,” “plan,” “project,” “will” and similar expressions, identify forward-looking statements, which generally are not historical in nature. These statements may contain information about financial prospects, economic conditions, trends and uncertainties and involve risks and uncertainties. We caution that actual results could differ materially from those that management expects, depending on the outcome of certain factors, including the completion of final documentation relating to the settlement of the securities and ERISA class actions, obtaining approval of the proposed settlement of the securities class action by the boards of directors of CalPERS and the Company, and obtaining court approval of the proposed settlement of the securities and ERISA class actions.

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Forward-Looking Statements

The statements, estimates, projections, guidance or outlook contained in this report include forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 (PSLRA). Generally the words “believe,” “expect,” “intend,” “estimate,” “anticipate,” “plan,” “project,” “will” and similar expressions, identify forward-looking statements, which generally are not historical in nature. These statements are intended to take advantage of the “safe harbor” provisions of the PSLRA. These statements may contain information about financial prospects, economic conditions, trends and uncertainties and involve risks and uncertainties that may cause our actual results to differ materially from the results discussed in the forward-looking statements.

Some factors that could cause results to differ materially from the forward-looking statements include: the potential consequences of the findings announced on October 15, 2006 of the investigation by an Independent Committee of directors of our historical stock option practices; the consequences of the restatement of our previous financial statements, related governmental reviews, including a formal investigation by the SEC, and review by the IRS, U.S. Congressional committees, U.S. Attorney for the Southern District of New York and Minnesota Attorney General, a related review by the Special Litigation Committee of the Company, and related shareholder derivative actions, including whether court approval of the settlement agreements between the Company and certain named defendants and the dismissal of the derivative claims against all named defendants is obtained, shareholder demands and purported securities and Employee Retirement Income Security Act class actions, the resolution of matters currently subject to an injunction issued by the United States District Court for the District of Minnesota, a purported notice of acceleration with respect to certain of the Company’s debt securities based upon an alleged event of default under the indenture governing such securities, and recent management and director changes, and the potential impact of each of these matters on our business, credit ratings and debt; increases in health care costs that are higher than we anticipated in establishing our premium rates, including increased consumption of or costs of medical services; heightened competition as a result of new entrants into our market, and consolidation of health care companies and suppliers; events that may negatively affect our contracts with AARP; uncertainties regarding changes in Medicare, including coordination of information systems and accuracy of certain assumptions; funding risks with respect to revenues received from Medicare and Medicaid programs; failure to achieve business growth targets, including membership and enrollment; increases in costs and other liabilities associated with increased litigation, legislative activity and government regulation and review of our industry; our ability to execute contracts on competitive terms with physicians, hospitals and other service professionals; regulatory and other risks associated with the pharmacy benefits management industry; failure to maintain effective and efficient information systems, which could result in the loss of existing customers, difficulties in attracting new customers, difficulties in determining medical costs estimates and appropriate pricing, customer and physician and health care professional disputes, regulatory violations, increases in operating costs, or other adverse consequences; possible impairment of the value of our intangible assets if future results do not adequately support goodwill and intangible assets recorded for businesses that we acquire; potential noncompliance by our business associates with patient privacy data; misappropriation of our proprietary technology; failure to complete or receive anticipated benefits of acquisitions; change in debt to total capital ratio that is lower or higher than we anticipated; and the potential consequences of the New York Attorney General’s investigation into our provider reimbursement practices.

This list of important factors is not intended to be exhaustive. We discuss certain of these matters more fully, as well as certain risk factors that may affect our business operations, financial condition and results of operations, in Part II, Item 1A, of this report and in our other periodic and current filings with the SEC, including our Annual Report on Form 10-K for the year ended December 31, 2007. Any or all forward-looking statements we make

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may turn out to be wrong. They can be affected by inaccurate assumptions we might make or by known or unknown risks and uncertainties. By their nature, forward-looking statements are not guarantees of future performance or results and are subject to risks, uncertainties and assumptions that are difficult to predict or quantify. Actual future results may vary materially from expectations expressed in this report or any of our prior communications. You should not place undue reliance on forward-looking statements, which speak only as of the date they are made. We do not undertake to update or revise any forward-looking statements.

Market risk represents the risk of changes in the fair value of a financial instrument caused by changes in interest rates or equity prices. The Company’s primary market risk is exposure to changes in interest rates that could impact the fair value of our investments and long-term debt.

Approximately $13.7 billion of our investments at March 31, 2008 were debt securities. Assuming a hypothetical and immediate 1% increase or decrease in interest rates applicable to our fixed-income investment portfolio at March 31, 2008, the fair value of our fixed-income investments would decrease or increase by approximately $475 million. We manage our investment portfolio to limit our exposure to any one issuer or industry and largely limit our investments to U.S. Government and Agency securities, state and municipal securities, and corporate debt obligations that are investment grade.

To mitigate the financial impact of changes in interest rates, we have entered into interest rate swap agreements to more closely match the interest rates of our long-term debt with those of our cash equivalents and short-term investments. Including the impact of our interest rate swap agreements, approximately $9.3 billion of our commercial paper and debt had variable rates of interest and $3.9 billion had fixed rates as of March 31, 2008. A hypothetical 1% increase or decrease in interest rates would change the fair value of our debt by approximately $260 million.

At March 31, 2008, we had $436 million of equity investments, a portion of which were held in various public and non-public companies concentrated in the areas of health care delivery and related information technologies. Market conditions that affect the value of health care or technology stocks will likewise impact the value of our equity portfolio.