UnitedHealth Group (UNH)

FORM OF GLOBAL SECURITY

THIS NOTE IS A GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO BELOW AND IS REGISTERED IN THE NAME OF A DEPOSITORY OR A NOMINEE OF A DEPOSITORY. THIS NOTE IS EXCHANGEABLE FOR NOTES REGISTERED IN THE NAME OF A PERSON OTHER THAN THE DEPOSITORY OR ITS NOMINEE ONLY IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE, AND NO TRANSFER OF THIS NOTE (OTHER THAN A TRANSFER OF THIS NOTE AS A WHOLE BY THE DEPOSITORY TO A NOMINEE OF THE DEPOSITORY OR BY A NOMINEE OF THE DEPOSITORY TO THE DEPOSITORY OR ANOTHER NOMINEE OF THE DEPOSITORY) MAY BE REGISTERED EXCEPT IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE.

UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (55 WATER STREET, NEW YORK, NEW YORK) TO THE ISSUER OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR SUCH OTHER NAME AS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY AND ANY PAYMENT IS MADE TO CEDE & CO., ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL SINCE THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

UNITEDHEALTH GROUP INCORPORATED, a Minnesota corporation (hereinafter called the “Company,” which term includes any successor corporation under the Indenture referred to below), for value received, hereby promises to pay to CEDE & CO., or registered assigns, the principal sum of [                            ] Dollars ($[                    ]) on February 7, 2011 (the “Stated Maturity”), and to pay interest thereon from February 7, 2008 or from the most recent date to which interest has been paid or duly provided for, quarterly on February 7, May 7, August 7, and November 7 in each year (each, an “Interest Payment Date”), commencing May 7, 2008, and at Maturity, at the rate per annum determined in accordance with the provisions set forth on the reverse side hereof, until the principal hereof is paid or duly made available for payment. The interest so payable and punctually paid or duly provided for on any Interest Payment Date will, as provided in such Indenture, be paid to the Person in whose name this Note (or one or more Predecessor Securities) is registered at the close of business on the “Regular Record Date” for such interest, which shall be the January 23, April 22, July 23 or October 23 (whether or not a Business Day, as hereinafter defined) next preceding each such Interest Payment Date. Any such interest which is payable, but is not punctually paid or duly provided for, on any Interest Payment Date shall forthwith cease to be payable to the registered Holder hereof on the relevant Regular Record Date by virtue of having been such Holder, and may be paid (i)

to the Person in whose name this Note (or one or more Predecessor Securities) is registered at the close of business on a Special Record Date for the payment of such Defaulted Interest to be fixed by the Trustee, notice whereof shall be given to the Holder of this Note not less than 10 days prior to such Special Record Date or (ii) in any other lawful manner not inconsistent with the requirements of any securities exchange on which this Note may be listed, and upon such notice as may be required by such exchange, if, after notice given by the Company to the Trustee of the proposed payment pursuant to this clause (ii), such manner of payment shall be deemed practicable by the Trustee. In the event that a payment of principal or interest is due on a date that is not a Business Day (as defined below), the related payment of principal or interest shall be made on the next succeeding Business Day with the same force and effect as if made on the date such payment was due, and no interest shall accrue on the amount so payable for the period from and after such Interest Payment Date or date of Maturity, as the case may be. “Business Day” shall mean any day other than a Saturday, a Sunday or a day on which banking institutions in New York, New York or Minneapolis, Minnesota or at the place of payment are authorized or obligated by law, regulation or executive order to remain closed. “London Business Day” means any day on which dealings in United States dollars are transacted in the London interbank market.

Payment of the principal of and the interest on this Note will be made at the corporate trust office of U.S. Bank National Association, in St. Paul, Minnesota, in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private debts. The method of such payment shall be by wire transfer for a Note held in book-entry form or at the option of the Company by check mailed to the Person entitled thereto as shown on the Security Register. Payment of the principal of and interest on this Note due at Maturity will be made in immediately available funds upon presentation of this Note.

Reference is hereby made to the further provisions of this Note set forth on the reverse side hereof, which further provisions shall for all purposes have the same effect as if set forth at this place.

Unless the certificate of authentication hereon has been executed by or on behalf of the Trustee under the Indenture by the manual signature of one of its authorized signatories, this Note shall not be entitled to any benefits under the Indenture or be valid or obligatory for any purpose.

FORM OF GLOBAL SECURITY

THIS NOTE IS A GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO BELOW AND IS REGISTERED IN THE NAME OF A DEPOSITORY OR A NOMINEE OF A DEPOSITORY. THIS NOTE IS EXCHANGEABLE FOR NOTES REGISTERED IN THE NAME OF A PERSON OTHER THAN THE DEPOSITORY OR ITS NOMINEE ONLY IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE, AND NO TRANSFER OF THIS NOTE (OTHER THAN A TRANSFER OF THIS NOTE AS A WHOLE BY THE DEPOSITORY TO A NOMINEE OF THE DEPOSITORY OR BY A NOMINEE OF THE DEPOSITORY TO THE DEPOSITORY OR ANOTHER NOMINEE OF THE DEPOSITORY) MAY BE REGISTERED EXCEPT IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE.

UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (55 WATER STREET, NEW YORK, NEW YORK) TO THE ISSUER OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR SUCH OTHER NAME AS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY AND ANY PAYMENT IS MADE TO CEDE & CO., ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL SINCE THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

UNITEDHEALTH GROUP INCORPORATED, a Minnesota corporation (hereinafter called the “Company,” which term includes any successor corporation under the Indenture referred to below), for value received, hereby promises to pay to CEDE & CO., or registered assigns, the principal sum of [                    ] Dollars ($[        ]) on February 15, 2013 (the “Stated Maturity”), and to pay interest thereon from February 7, 2008 or from the most recent date to which interest has been paid or duly provided for, semi-annually on February 15 and August 15 in each year (each, an “Interest Payment Date”), commencing August 15, 2008, and at Maturity, at the rate of 4.875% per annum, until the principal hereof is paid or duly made available for payment. Interest on this Note shall be calculated on the basis of a 360-day year consisting of twelve 30-day months. The interest so payable and punctually paid or duly provided for on any Interest Payment Date will, as provided in such Indenture, be paid to the Person in whose name this Note (or one or more Predecessor Securities) is registered at the close of business on the “Regular Record Date” for such interest, which shall be the February 1 or August 1 (whether or not a Business Day, as hereinafter defined) next preceding each such Interest Payment Date. Any such interest which is payable, but is not punctually paid or duly provided for, on any Interest Payment Date shall forthwith cease to be payable to the registered Holder hereof on the relevant Regular Record Date by virtue of having been such Holder, and may

be paid (i) to the Person in whose name this Note (or one or more Predecessor Securities) is registered at the close of business on a Special Record Date for the payment of such Defaulted Interest to be fixed by the Trustee, notice whereof shall be given to the Holder of this Note not less than 10 days prior to such Special Record Date or (ii) in any other lawful manner not inconsistent with the requirements of any securities exchange on which this Note may be listed, and upon such notice as may be required by such exchange, if, after notice given by the Company to the Trustee of the proposed payment pursuant to this clause (ii), such manner of payment shall be deemed practicable by the Trustee. In the event that a payment of principal or interest is due on a date that is not a Business Day (as defined below), the related payment of principal or interest shall be made on the next succeeding Business Day with the same force and effect as if made on the date such payment was due, and no interest shall accrue on the amount so payable for the period from and after such Interest Payment Date or date of Maturity, as the case may be. “Business Day” shall mean any day other than a Saturday, a Sunday or a day on which banking institutions in New York, New York or Minneapolis, Minnesota or at the place of payment are authorized or obligated by law, regulation or executive order to remain closed.

Payment of the principal of and the interest on this Note will be made at the corporate trust office of U.S. Bank National Association, in St. Paul, Minnesota, in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private debts. The method of such payment shall be by wire transfer for a Note held in book-entry form or at the option of the Company by check mailed to the Person entitled thereto as shown on the Security Register. Payment of the principal of and interest on this Note due at Maturity will be made in immediately available funds upon presentation of this Note.

Reference is hereby made to the further provisions of this Note set forth on the reverse side hereof, which further provisions shall for all purposes have the same effect as if set forth at this place.

Unless the certificate of authentication hereon has been executed by or on behalf of the Trustee under the Indenture by the manual signature of one of its authorized signatories, this Note shall not be entitled to any benefits under the Indenture or be valid or obligatory for any purpose.

FORM OF GLOBAL SECURITY

THIS NOTE IS A GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO BELOW AND IS REGISTERED IN THE NAME OF A DEPOSITORY OR A NOMINEE OF A DEPOSITORY. THIS NOTE IS EXCHANGEABLE FOR NOTES REGISTERED IN THE NAME OF A PERSON OTHER THAN THE DEPOSITORY OR ITS NOMINEE ONLY IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE, AND NO TRANSFER OF THIS NOTE (OTHER THAN A TRANSFER OF THIS NOTE AS A WHOLE BY THE DEPOSITORY TO A NOMINEE OF THE DEPOSITORY OR BY A NOMINEE OF THE DEPOSITORY TO THE DEPOSITORY OR ANOTHER NOMINEE OF THE DEPOSITORY) MAY BE REGISTERED EXCEPT IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE.

UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (55 WATER STREET, NEW YORK, NEW YORK) TO THE ISSUER OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR SUCH OTHER NAME AS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY AND ANY PAYMENT IS MADE TO CEDE & CO., ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL SINCE THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

UNITEDHEALTH GROUP INCORPORATED, a Minnesota corporation (hereinafter called the “Company,” which term includes any successor corporation under the Indenture referred to below), for value received, hereby promises to pay to CEDE & CO., or registered assigns, the principal sum of [                            ] Dollars ($[            ]) on February 15, 2018 (the “Stated Maturity”), and to pay interest thereon from February 7, 2008 or from the most recent date to which interest has been paid or duly provided for, semi-annually on February 15 and August 15 in each year (each, an “Interest Payment Date”), commencing August 15, 2008, and at Maturity, at the rate of 6.000% per annum, until the principal hereof is paid or duly made available for payment. Interest on this Note shall be calculated on the basis of a 360-day year consisting of twelve 30-day months. The interest so payable and punctually paid or duly provided for on any Interest Payment Date will, as provided in such Indenture, be paid to the Person in whose name this Note (or one or more Predecessor Securities) is registered at the close of business on the “Regular Record Date” for such interest, which shall be the February 1 or August 1 (whether or not a Business Day, as hereinafter defined) next preceding each such Interest Payment Date. Any such interest which is payable, but is not punctually paid or duly provided for, on any Interest Payment Date shall forthwith cease to be payable to the registered Holder hereof on the relevant Regular Record Date by virtue of having been such Holder, and may be paid (i) to

the Person in whose name this Note (or one or more Predecessor Securities) is registered at the close of business on a Special Record Date for the payment of such Defaulted Interest to be fixed by the Trustee, notice whereof shall be given to the Holder of this Note not less than 10 days prior to such Special Record Date or (ii) in any other lawful manner not inconsistent with the requirements of any securities exchange on which this Note may be listed, and upon such notice as may be required by such exchange, if, after notice given by the Company to the Trustee of the proposed payment pursuant to this clause (ii), such manner of payment shall be deemed practicable by the Trustee. In the event that a payment of principal or interest is due on a date that is not a Business Day (as defined below), the related payment of principal or interest shall be made on the next succeeding Business Day with the same force and effect as if made on the date such payment was due, and no interest shall accrue on the amount so payable for the period from and after such Interest Payment Date or date of Maturity, as the case may be. “Business Day” shall mean any day other than a Saturday, a Sunday or a day on which banking institutions in New York, New York or Minneapolis, Minnesota or at the place of payment are authorized or obligated by law, regulation or executive order to remain closed.

Payment of the principal of and the interest on this Note will be made at the corporate trust office of U.S. Bank National Association, in St. Paul, Minnesota, in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private debts. The method of such payment shall be by wire transfer for a Note held in book-entry form or at the option of the Company by check mailed to the Person entitled thereto as shown on the Security Register. Payment of the principal of and interest on this Note due at Maturity will be made in immediately available funds upon presentation of this Note.

Reference is hereby made to the further provisions of this Note set forth on the reverse side hereof, which further provisions shall for all purposes have the same effect as if set forth at this place.

Unless the certificate of authentication hereon has been executed by or on behalf of the Trustee under the Indenture by the manual signature of one of its authorized signatories, this Note shall not be entitled to any benefits under the Indenture or be valid or obligatory for any purpose.

FORM OF GLOBAL SECURITY

THIS NOTE IS A GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO BELOW AND IS REGISTERED IN THE NAME OF A DEPOSITORY OR A NOMINEE OF A DEPOSITORY. THIS NOTE IS EXCHANGEABLE FOR NOTES REGISTERED IN THE NAME OF A PERSON OTHER THAN THE DEPOSITORY OR ITS NOMINEE ONLY IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE, AND NO TRANSFER OF THIS NOTE (OTHER THAN A TRANSFER OF THIS NOTE AS A WHOLE BY THE DEPOSITORY TO A NOMINEE OF THE DEPOSITORY OR BY A NOMINEE OF THE DEPOSITORY TO THE DEPOSITORY OR ANOTHER NOMINEE OF THE DEPOSITORY) MAY BE REGISTERED EXCEPT IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE.

UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (55 WATER STREET, NEW YORK, NEW YORK) TO THE ISSUER OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR SUCH OTHER NAME AS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY AND ANY PAYMENT IS MADE TO CEDE & CO., ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL SINCE THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

UNITEDHEALTH GROUP INCORPORATED, a Minnesota corporation (hereinafter called the “Company,” which term includes any successor corporation under the Indenture referred to below), for value received, hereby promises to pay to CEDE & CO., or registered assigns, the principal sum of [                                        ] Dollars ($[                    ]) on February 15, 2038 (the “Stated Maturity”), and to pay interest thereon from February 7, 2008 or from the most recent date to which interest has been paid or duly provided for, semi-annually on February 15 and August 15 in each year (each, an “Interest Payment Date”), commencing August 15, 2008, and at Maturity, at the rate of 6.875% per annum, until the principal hereof is paid or duly made available for payment. Interest on this Note shall be calculated on the basis of a 360-day year consisting of twelve 30-day months. The interest so payable and punctually paid or duly provided for on any Interest Payment Date will, as provided in such Indenture, be paid to the Person in whose name this Note (or one or more Predecessor Securities) is registered at the close of business on the “Regular Record Date” for such interest, which shall be the February 1 or August 1 (whether or not a Business Day, as hereinafter defined) next preceding each such Interest Payment Date. Any such interest which is payable, but is not punctually paid or duly provided for, on any Interest Payment Date shall forthwith cease to be payable to the registered Holder hereof on the relevant Regular Record Date by virtue of having been such Holder, and may be paid (i) to

the Person in whose name this Note (or one or more Predecessor Securities) is registered at the close of business on a Special Record Date for the payment of such Defaulted Interest to be fixed by the Trustee, notice whereof shall be given to the Holder of this Note not less than 10 days prior to such Special Record Date or (ii) in any other lawful manner not inconsistent with the requirements of any securities exchange on which this Note may be listed, and upon such notice as may be required by such exchange, if, after notice given by the Company to the Trustee of the proposed payment pursuant to this clause (ii), such manner of payment shall be deemed practicable by the Trustee. In the event that a payment of principal or interest is due on a date that is not a Business Day (as defined below), the related payment of principal or interest shall be made on the next succeeding Business Day with the same force and effect as if made on the date such payment was due, and no interest shall accrue on the amount so payable for the period from and after such Interest Payment Date or date of Maturity, as the case may be. “Business Day” shall mean any day other than a Saturday, a Sunday or a day on which banking institutions in New York, New York or Minneapolis, Minnesota or at the place of payment are authorized or obligated by law, regulation or executive order to remain closed.

Payment of the principal of and the interest on this Note will be made at the corporate trust office of U.S. Bank National Association, in St. Paul, Minnesota, in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private debts. The method of such payment shall be by wire transfer for a Note held in book-entry form or at the option of the Company by check mailed to the Person entitled thereto as shown on the Security Register. Payment of the principal of and interest on this Note due at Maturity will be made in immediately available funds upon presentation of this Note.

Reference is hereby made to the further provisions of this Note set forth on the reverse side hereof, which further provisions shall for all purposes have the same effect as if set forth at this place.

Unless the certificate of authentication hereon has been executed by or on behalf of the Trustee under the Indenture by the manual signature of one of its authorized signatories, this Note shall not be entitled to any benefits under the Indenture or be valid or obligatory for any purpose.