AETNA INC. Certificate of Designated Officers June 9, 2006

EX-4.1 4 dp02798_ex0401.htm

Exhibit 4.1

AETNA INC.

Certificate of Designated Officers

June 9, 2006

     Alan M. Bennett, Senior Vice President and Chief Financial Officer, and Alfred P. Quirk, Jr., Vice President, Finance and Treasurer, each of Aetna Inc., a Pennsylvania corporation (the “Company”), pursuant to Sections 201 and 301 of the Senior Indenture, dated as of March 2, 2001 (the “Indenture”), between the Company, as issuer, and U.S. Bank National Association, successor in interest to State Street Bank and Trust Company, as trustee (the “Trustee”), and pursuant to resolutions adopted by the Board of Directors of the Company on December 2, 2005 and the Delegation of Authority of Ronald A. Williams, Chief Executive Officer and President of the Company, dated as of June 5, 2006 (the “Company Resolutions”), hereby certify that there are hereby approved and established pursuant to the Indenture three series of securities (the “Securities”) of the Company under the Indenture whose terms shall be as set forth in Annexes A, B and C attached hereto.

     The undersigned officers (i) have read the applicable provisions of the Indenture, (ii) have reviewed the forms and terms of the Securities, (iii) in the opinion of the undersigned, have made such examination or investigation as is necessary to enable the undersigned to express an informed opinion as to whether or not the applicable covenants and conditions of the Indenture have been complied with, (iv) hereby certify that the applicable covenants and conditions of the Indenture have been complied with and (v) hereby certify that the forms and terms of the Securities comply with the Indenture.

     Capitalized terms used but not defined herein have the meanings ascribed thereto in the Indenture.






     IN WITNESS WHEREOF, we have hereunto signed our names as of the date first written above.

   
/s/ Alan M. Bennett

Name: Alan M. Bennett 
Title: Senior Vice President and Chief
Financial Officer 


   
/s/ Alfred P. Quirk, Jr.

Name: Alfred P. Quirk, Jr. 
Title: Vice President, Finance and
Treasurer 

 

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ANNEX A

5.750% Senior Notes due 2011

     1. One series of the Securities shall be known and designated as the “5.750% Senior Notes due 2011” of the Company (the “2011 Notes”).

     2. The aggregate principal amount of 2011 Notes which may be authenticated and delivered under the Indenture is initially limited to $450,000,000 (except for such Securities authenticated and delivered upon registration of transfer of, or in exchange for, or in lieu of, other 2011 Notes pursuant to Sections 304, 305, 306, 906 or 1107 of the Indenture and except for any Securities which, pursuant to Section 303 of the Indenture, are deemed never to have been authenticated and delivered thereunder). Additional 2011 Notes may be authenticated and delivered from time to time as contemplated in Section 301 of the Indenture.

     3. The Stated Maturity of the principal of the 2011 Notes shall be June 15, 2011.

     4. The 2011 Notes shall bear interest at the rate of 5.750% per annum, which will accrue from June 9, 2006, or from the most recent Interest Payment Date to which interest has been paid or duly provided for, as the case may be, payable semi-annually on June 15 and December 15 in each year, commencing December 15, 2006, to the Person in whose name such 2011 Notes (or one or more predecessor 2011 Notes) are registered at the close of business on the Regular Record Date next preceding the Interest Payment Date. Each June 15 and December 15 shall be an “Interest Payment Date” for such 2011 Notes, and the May 31 or November 30 (whether or not a Business Day), as the case may be, next preceding an Interest Payment Date shall be the “Regular Record Date” for the interest payable on such Interest Payment Date.

     5. The 2011 Notes are unsecured.

     6. Payment of the principal of and interest on the 2011 Notes will be made at the office or agency of the Company maintained for that purpose in the Borough of Manhattan, City of New York; provided, however, that at any time that the 2011 Notes are not represented by Global Securities, at the option of the Company, payment of interest may be made by check mailed to the address of the Person entitled thereto as such address shall appear in the Security Register.

     7. The 2011 Notes will be redeemable upon not less than 30 calendar days’ nor more than 60 calendar days’ notice by mail, at any time, in whole or in part, at the election of the Company, at a Redemption Price equal to the greater of:

  • 100% of the principal amount of the 2011 Notes to be redeemed, or

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  • the sum of the present values of the remaining scheduled payments of principal and interest on the 2011 Notes to be redeemed from the Redemption Date to the date of Maturity for the 2011 Notes discounted to the Redemption Date on a semiannual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate (as defined below) plus 15 basis points,

     plus any interest accrued but not paid to the Redemption Date.

      “Treasury Rate” means, with respect to any Redemption Date for any portion of the 2011 Notes,

  • the yield, under the heading which represents the average for the immediately preceding week, appearing in the most recently published statistical release designated “H.15(519)” or any successor publication which is published weekly by the Board of Governors of the Federal Reserve System and which establishes yields on actively traded United States Treasury securities adjusted to constant maturity under the caption “Treasury Constant Maturities,” for the maturity corresponding to the Comparable Treasury Issue (if no maturity is within three months before or after the date of Maturity for the 2011 Notes, yields for the two published maturities most closely corresponding to the Comparable Treasury Issue will be determined and the Treasury Rate shall be interpolated or extrapolated from those yields on a straight line basis, rounding to the nearest month) or

  • if the release referred to in the previous bullet (or any successor release) is not published during the week preceding the calculation date or does not contain the yields referred to above, the rate per annum equal to the semi- annual equivalent yield to maturity of the Comparable Treasury Issue, calculated using a price for the Comparable Treasury Issue (expressed as a percentage of its principal amount) equal to the Comparable Treasury Price for that Redemption Date.

The Treasury Rate will be calculated on the third Business Day preceding the Redemption Date.

      “Comparable Treasury Issue” means the United States Treasury security selected by an “Independent Investment Banker” as having a maturity comparable to the remaining term of the 2011 Notes that would be utilized, at the time of selection and in accordance with customary financial practice, in pricing new issues of corporate debt securities of comparable maturity to the remaining term of the 2011 Notes.

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      “Comparable Treasury Price” means, with respect to any Redemption Date for any 2011 Notes, the average of all Reference Treasury Dealer Quotations (as defined below) obtained.

      “Independent Investment Banker” means one of the Reference Treasury Dealers appointed by the Trustee after consultation with the Company.

      “Reference Treasury Dealer” means each of Citigroup Global Markets Inc., Goldman, Sachs & Co. and J.P. Morgan Securities Inc. If any Reference Treasury Dealer ceases to be a primary U.S. government securities dealer in New York City (a “Primary Treasury Dealer”), the Company shall substitute another Primary Treasury Dealer for that dealer.

      “Reference Treasury Dealer Quotations” means, with respect to each Reference Treasury Dealer and any Redemption Date, the average, as determined by the Trustee, of the bid and asked prices for the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) quoted in writing to the Trustee by that Reference Treasury Dealer at 5:00 p.m. on the third Business Day preceding the Redemption Date.

      Notice of any redemption will be mailed at least 30 calendar days but no more than 60 calendar days before the Redemption Date to each holder of the 2011 Notes.

      Unless the Company defaults in payment of the Redemption Price, interest will cease to accrue on the 2011 Notes called for redemption on and after the Redemption Date.

     8. The Company shall not be obligated to redeem or purchase the 2011 Notes pursuant to any sinking fund or analogous provision, or at the option of any Holder thereof.

     9. The 2011 Notes shall be issued in the form of one or more Global Securities registered in the name of The Depository Trust Company (“DTC”) or its nominee, to be deposited with, or on behalf of, The Depository Trust Company, New York, New York.

     10. U.S. Bank National Association shall act as paying agent and registrar with respect to the 2011 Notes.

     11. The 2011 Notes shall be in such form or forms as may be approved by the officers of the Company as provided in the Company Resolutions, such approval to be evidenced by any such officer’s manual or facsimile signature on the 2011 Notes, provided that such form or forms of the 2011 Notes are not inconsistent with the requirements of the Indenture or the Company Resolutions and are substantially in the form or forms attached hereto as Exhibit A-1.

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ANNEX B

6.000% Senior Notes due 2016

     1. One series of the Securities shall be known and designated as the “6.000% Senior Notes due 2016” of the Company (the “2016 Notes”).

     2. The aggregate principal amount of 2016 Notes which may be authenticated and delivered under the Indenture is initially limited to $750,000,000 (except for such Securities authenticated and delivered upon registration of transfer of, or in exchange for, or in lieu of, other 2016 Notes pursuant to Sections 304, 305, 306, 906 or 1107 of the Indenture and except for any Securities which, pursuant to Section 303 of the Indenture, are deemed never to have been authenticated and delivered thereunder). Additional 2016 Notes may be authenticated and delivered from time to time as contemplated in Section 301 of the Indenture.

     3. The Stated Maturity of the principal of the 2016 Notes shall be June 15, 2016.

     4. The 2016 Notes shall bear interest at the rate of 6.000% per annum, which will accrue from June 9, 2006, or from the most recent Interest Payment Date to which interest has been paid or duly provided for, as the case may be, payable semi-annually on June 15 and December 15 in each year, commencing December 15, 2006, to the Person in whose name such 2016 Notes (or one or more predecessor 2016 Notes) are registered at the close of business on the Regular Record Date next preceding the Interest Payment Date. Each June 15 and December 15 shall be an “Interest Payment Date” for such 2016 Notes, and the May 31 or November 30 (whether or not a Business Day), as the case may be, next preceding an Interest Payment Date shall be the “Regular Record Date” for the interest payable on such Interest Payment Date.

     5. The 2016 Notes are unsecured.

     6. Payment of the principal of and interest on the 2016 Notes will be made at the office or agency of the Company maintained for that purpose in the Borough of Manhattan, City of New York; provided, however, that at any time that the 2016 Notes are not represented by Global Securities, at the option of the Company, payment of interest may be made by check mailed to the address of the Person entitled thereto as such address shall appear in the Security Register.

     7. The 2016 Notes will be redeemable upon not less than 30 calendar days’ nor more than 60 calendar days’ notice by mail, at any time, in whole or in part, at the election of the Company, at a Redemption Price equal to the greater of:

  • 100% of the principal amount of the 2016 Notes to be redeemed, or

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  • the sum of the present values of the remaining scheduled payments of principal and interest on the 2016 Notes to be redeemed from the Redemption Date to the date of Maturity for the 2016 Notes discounted to the Redemption Date on a semiannual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate (as defined below) plus 20 basis points,

     plus any interest accrued but not paid to the Redemption Date.

      “Treasury Rate” means, with respect to any Redemption Date for any portion of the 2016 Notes,

  • the yield, under the heading which represents the average for the immediately preceding week, appearing in the most recently published statistical release designated “H.15(519)” or any successor publication which is published weekly by the Board of Governors of the Federal Reserve System and which establishes yields on actively traded United States Treasury securities adjusted to constant maturity under the caption “Treasury Constant Maturities,” for the maturity corresponding to the Comparable Treasury Issue (if no maturity is within three months before or after the date of Maturity for the 2016 Notes, yields for the two published maturities most closely corresponding to the Comparable Treasury Issue will be determined and the Treasury Rate shall be interpolated or extrapolated from those yields on a straight line basis, rounding to the nearest month) or

  • if the release referred to in the previous bullet (or any successor release) is not published during the week preceding the calculation date or does not contain the yields referred to above, the rate per annum equal to the semi- annual equivalent yield to maturity of the Comparable Treasury Issue, calculated using a price for the Comparable Treasury Issue (expressed as a percentage of its principal amount) equal to the Comparable Treasury Price for that Redemption Date.

The Treasury Rate will be calculated on the third Business Day preceding the Redemption Date.

      “Comparable Treasury Issue” means the United States Treasury security selected by an “Independent Investment Banker” as having a maturity comparable to the remaining term of the 2016 Notes that would be utilized, at the time of selection and in accordance with customary financial practice, in pricing new issues of corporate debt securities of comparable maturity to the remaining term of the 2016 Notes.

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      “Comparable Treasury Price” means, with respect to any Redemption Date for any 2016 Notes, the average of all Reference Treasury Dealer Quotations (as defined below) obtained.

      “Independent Investment Banker” means one of the Reference Treasury Dealers appointed by the Trustee after consultation with the Company.

      “Reference Treasury Dealer” means each of Citigroup Global Markets Inc., Goldman, Sachs & Co. and J.P. Morgan Securities Inc. If any Reference Treasury Dealer ceases to be a primary U.S. government securities dealer in New York City (a “Primary Treasury Dealer”), the Company shall substitute another Primary Treasury Dealer for that dealer.

      “Reference Treasury Dealer Quotations” means, with respect to each Reference Treasury Dealer and any Redemption Date, the average, as determined by the Trustee, of the bid and asked prices for the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) quoted in writing to the Trustee by that Reference Treasury Dealer at 5:00 p.m. on the third Business Day preceding the Redemption Date.

      Notice of any redemption will be mailed at least 30 calendar days but no more than 60 calendar days before the Redemption Date to each holder of the 2016 Notes.

      Unless the Company defaults in payment of the Redemption Price, interest will cease to accrue on the 2016 Notes called for redemption on and after the Redemption Date.

     8. The Company shall not be obligated to redeem or purchase the 2016 Notes pursuant to any sinking fund or analogous provision, or at the option of any Holder thereof.

     9. The 2016 Notes shall be issued in the form of one or more Global Securities registered in the name of The Depository Trust Company (“DTC”) or its nominee, to be deposited with, or on behalf of, The Depository Trust Company, New York, New York.

     10. U.S. Bank National Association shall act as paying agent and registrar with respect to the 2016 Notes.

     11. The 2016 Notes shall be in such form or forms as may be approved by the officers of the Company as provided in the Company Resolutions, such approval to be evidenced by s any such officer’s manual or facsimile signature on the 2016 Notes, provided that such form or forms of the 2016 Notes are not inconsistent with the requirements of the Indenture or the Company Resolutions and are substantially in the form or forms attached hereto as Exhibit B-1.

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ANNEX C

6.625% Senior Notes due 2036

     1. One series of the Securities shall be known and designated as the “6.625% Senior Notes due 2036” of the Company (the “2036 Notes”).

     2. The aggregate principal amount of 2036 Notes which may be authenticated and delivered under the Indenture is initially limited to $800,000,000 (except for such Securities authenticated and delivered upon registration of transfer of, or in exchange for, or in lieu of, other 2036 Notes pursuant to Sections 304, 305, 306, 906 or 1107 of the Indenture and except for any Securities which, pursuant to Section 303 of the Indenture, are deemed never to have been authenticated and delivered thereunder). Additional 2036 Notes may be authenticated and delivered from time to time as contemplated in Section 301 of the Indenture.

     3. The Stated Maturity of the principal of the 2036 Notes shall be June 15, 2036.

     4. The 2036 Notes shall bear interest at the rate of 6.625% per annum, which will accrue from June 9, 2006, or from the most recent Interest Payment Date to which interest has been paid or duly provided for, as the case may be, payable semi-annually on June 15 and December 15 in each year, commencing December 15, 2006, to the Person in whose name such 2036 Notes (or one or more predecessor 2036 Notes) are registered at the close of business on the Regular Record Date next preceding the Interest Payment Date. Each June 15 and December 15 shall be an “Interest Payment Date” for such 2036 Notes, and the May 31 or November 30 (whether or not a Business Day), as the case may be, next preceding an Interest Payment Date shall be the “Regular Record Date” for the interest payable on such Interest Payment Date.

     5. The 2036 Notes are unsecured.

     6. Payment of the principal of and interest on the 2036 Notes will be made at the office or agency of the Company maintained for that purpose in the Borough of Manhattan, City of New York; provided, however, that at any time that the 2036 Notes are not represented by Global Securities, at the option of the Company, payment of interest may be made by check mailed to the address of the Person entitled thereto as such address shall appear in the Security Register.

     7. The 2036 Notes will be redeemable upon not less than 30 calendar days’ nor more than 60 calendar days’ notice by mail, at any time, in whole or in part, at the election of the Company, at a Redemption Price equal to the greater of:

  • 100% of the principal amount of the 2036 Notes to be redeemed, or

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  • the sum of the present values of the remaining scheduled payments of principal and interest on the 2036 Notes to be redeemed from the Redemption Date to the date of Maturity for the 2036 Notes discounted to the Redemption Date on a semiannual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate (as defined below) plus 25 basis points,

     plus any interest accrued but not paid to the Redemption Date.

      “Treasury Rate” means, with respect to any Redemption Date for any portion of the 2036 Notes,

  • the yield, under the heading which represents the average for the immediately preceding week, appearing in the most recently published statistical release designated “H.15(519)” or any successor publication which is published weekly by the Board of Governors of the Federal Reserve System and which establishes yields on actively traded United States Treasury securities adjusted to constant maturity under the caption “Treasury Constant Maturities,” for the maturity corresponding to the Comparable Treasury Issue (if no maturity is within three months before or after the date of Maturity for the 2036 Notes, yields for the two published maturities most closely corresponding to the Comparable Treasury Issue will be determined and the Treasury Rate shall be interpolated or extrapolated from those yields on a straight line basis, rounding to the nearest month) or

  • if the release referred to in the previous bullet (or any successor release) is not published during the week preceding the calculation date or does not contain the yields referred to above, the rate per annum equal to the semi- annual equivalent yield to maturity of the Comparable Treasury Issue, calculated using a price for the Comparable Treasury Issue (expressed as a percentage of its principal amount) equal to the Comparable Treasury Price for that Redemption Date.

The Treasury Rate will be calculated on the third Business Day preceding the Redemption Date.

      “Comparable Treasury Issue” means the United States Treasury security selected by an “Independent Investment Banker” as having a maturity comparable to the remaining term of the 2036 Notes that would be utilized, at the time of selection and in accordance with customary financial practice, in pricing new issues of corporate debt securities of comparable maturity to the remaining term of the 2036 Notes.

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      “Comparable Treasury Price” means, with respect to any Redemption Date for any 2036 Notes, the average of all Reference Treasury Dealer Quotations (as defined below) obtained.

      “Independent Investment Banker” means one of the Reference Treasury Dealers appointed by the Trustee after consultation with the Company.

      “Reference Treasury Dealer” means each of Citigroup Global Markets Inc., Goldman, Sachs & Co. and J.P. Morgan Securities Inc. If any Reference Treasury Dealer ceases to be a primary U.S. government securities dealer in New York City (a “Primary Treasury Dealer”), the Company shall substitute another Primary Treasury Dealer for that dealer.

      “Reference Treasury Dealer Quotations” means, with respect to each Reference Treasury Dealer and any Redemption Date, the average, as determined by the Trustee, of the bid and asked prices for the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) quoted in writing to the Trustee by that Reference Treasury Dealer at 5:00 p.m. on the third Business Day preceding the Redemption Date.

      Notice of any redemption will be mailed at least 30 calendar days but no more than 60 calendar days before the Redemption Date to each holder of the 2036 Notes.

      Unless the Company defaults in payment of the Redemption Price, interest will cease to accrue on the 2036 Notes called for redemption on and after the Redemption Date.

     8. The Company shall not be obligated to redeem or purchase the 2036 Notes pursuant to any sinking fund or analogous provision, or at the option of any Holder thereof.

     9. The 2036 Notes shall be issued in the form of one or more Global Securities registered in the name of The Depository Trust Company (“DTC”) or its nominee, to be deposited with, or on behalf of, The Depository Trust Company, New York, New York.

     10. U.S. Bank National Association shall act as paying agent and registrar with respect to the 2036 Notes.

     11. The 2036 Notes shall be in such form or forms as may be approved by the officers of the Company as provided in the Company Resolutions, such approval to be evidenced by any such officer’s manual or facsimile signature on the 2036 Notes, provided that such form or forms of the 2036 Notes are not inconsistent with the requirements of the Indenture or the Company Resolutions and are substantially in the form or forms attached hereto as Exhibit C-1.

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Exhibit A-1

Form of 2011 Note

THIS SECURITY IS A GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITARY OR A NOMINEE THEREOF. THIS SECURITY MAY NOT BE TRANSFERRED TO, OR REGISTERED OR EXCHANGED FOR SECURITIES REGISTERED IN THE NAME OF, ANY PERSON OTHER THAN THE DEPOSITARY OR A NOMINEE THEREOF, AND NO SUCH TRANSFER MAY BE REGISTERED EXCEPT IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE. EVERY SECURITY AUTHENTICATED AND DELIVERED UPON REGISTRATION OF TRANSFER OF, OR IN EXCHANGE FOR OR IN LIEU OF, THIS SECURITY SHALL BE A GLOBAL SECURITY SUBJECT TO THE FOREGOING, EXCEPT IN SUCH LIMITED CIRCUMSTANCES.

Unless this certificate is presented by an authorized representative of The Depository Trust Company, a New York corporation ("DTC"), to Aetna Inc. or its agent for registration of transfer, exchange or payment, and any certificate issued is registered in the name of Cede & Co. or in such other name as is requested by an authorized representative of DTC (and any payment is made to Cede & Co. or to such other entity as is requested by an authorized representative of DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL inasmuch as the registered owner hereof, Cede & Co., has an interest herein.

AETNA INC.

5.750% SENIOR NOTE DUE 2011

CUSIP: 00817Y AD 0  
   
No. 2011-1 $450,000,000

      AETNA INC., a Pennsylvania corporation (herein called the “Company”), which term includes any successor Person under the Indenture hereinafter referred to, for value received, hereby promises to pay to Cede & Co., or registered assigns, the principal sum of FOUR HUNDRED FIFTY MILLION Dollars ($450,000,000) upon presentation and surrender of this Security on June 15, 2011, and to pay interest thereon from June 9, 2006 or from the most recent Interest Payment Date to which interest has been paid or duly provided for, semi-annually on June 15 and December 15 in each year, commencing December 15, 2006, at the rate of 5.750% per annum until the principal hereof is paid or made available for payment. The interest so payable, and punctually paid or duly

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provided for, on any Interest Payment Date will, as provided in such Indenture, be paid to the Person in whose name this Security (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 May 31 or November 30 (whether or not a Business Day), as the case may be, next preceding such Interest Payment Date. Any such interest not so punctually paid or duly provided for will forthwith cease to be payable to the Holder on such Regular Record Date and may either be paid to the Person in whose name this Security (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 Holders of Securities of this series not less than 10 calendar days prior to such Special Record Date, or be paid at any time in any other lawful manner not inconsistent with the requirements of any securities exchange on which the Securities of this series may be listed, and upon such notice as may be required by such exchange, all as more fully provided in said Indenture.

      Payment of the principal of and premium, if any, and interest on this Security will be made at the office or agency of the Company maintained for that purpose in the Borough of Manhattan, City of New York, 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.

      Reference is hereby made to the further provisions of this Security set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. Such provisions include, without limitation, provisions relating to redemption of this Security by the Company.

      Unless the certificate of authentication hereon has been executed by the Trustee referred to on the reverse hereof by manual signature, this Security shall not be entitled to any benefit under the Indenture or be valid or obligatory for any purpose.

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      IN WITNESS WHEREOF, the Company has caused this instrument to be duly executed under its corporate seal.

Dated: June 9, 2006

AETNA INC.
     
By:  
 
  Name: Alfred P. Quirk, Jr. 
  Title: Vice President, Finance and
Treasurer 


[SEAL]
 
Attest:
 

William C. Baskin III

 

TRUSTEE'S CERTIFICATE OF AUTHENTICATION

This is one of the Securities of the series designated under, and referred to in, the within-mentioned Indenture.

U.S. BANK NATIONAL ASSOCIATION, as Trustee 
   
By:  
 
  Authorized Officer
   

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(Back of Note)

      This Security is one of a duly authorized issue of securities of the Company (herein called the “Securities”), issued and to be issued in one or more series under a Senior Indenture, dated as of March 2, 2001 (herein called the “Indenture”), between the Company, as issuer, and U.S. Bank National Association (as successor in interest to State Street Bank and Trust Company), as Trustee (herein called the “Trustee”, which term includes any successor trustee under the Indenture), to which Indenture and all indentures supplemental thereto reference is hereby made for a statement of the respective rights, limitations of rights, duties and immunities thereunder of the Company, the Trustee and the Holders of the Securities and of the terms upon which the Securities are, and are to be, authenticated and delivered. This Security is one of the series designated on the face hereof, initially limited in aggregate principal amount to $450,000,000, subject to future issuances of additional Securities pursuant to Section 301 of the Indenture.

      The Securities of this series are subject to redemption upon not less than 30 calendar days’ nor more than 60 calendar days’ notice by mail, at any time, in whole or in part, at the election of the Company, at a Redemption Price equal to the greater of:

    • 100% of the principal amount of the Securities to be redeemed, or

    • the sum of the present values of the remaining scheduled payments of principal and interest on the Securities to be redeemed from the Redemption Date to the date of Maturity for such Securities discounted to the Redemption Date on a semiannual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate (as defined below) plus 15 basis points,

      plus any interest accrued but not paid to the Redemption Date.

      “Treasury Rate” means, with respect to any Redemption Date for any portion of the Securities,

    • the yield, under the heading which represents the average for the immediately preceding week, appearing in the most recently published statistical release designated “H.15(519)” or any successor publication which is published weekly by the Board of Governors of the Federal Reserve System and which establishes yields on actively traded United States Treasury securities adjusted to constant maturity under the caption

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“Treasury Constant Maturities,” for the maturity corresponding to the Comparable Treasury Issue (if no maturity is within three months before or after the date of Maturity for the Securities to be redeemed, yields for the two published maturities most closely corresponding to the Comparable Treasury Issue will be determined and the Treasury Rate shall be interpolated or extrapolated from those yields on a straight line basis, rounding to the nearest month) or

  • if the release referred to in the previous bullet (or any successor release) is not published during the week preceding the calculation date or does not contain the yields referred to above, the rate per annum equal to the semi-annual equivalent yield to maturity of the Comparable Treasury Issue, calculated using a price for the Comparable Treasury Issue (expressed as a percentage of its principal amount) equal to the Comparable Treasury Price for that Redemption Date.

The Treasury Rate will be calculated on the third Business Day preceding the Redemption Date.

      “Comparable Treasury Issue” means the United States Treasury security selected by an “Independent Investment Banker” as having a maturity comparable to the remaining term of the Securities to be redeemed that would be utilized, at the time of selection and in accordance with customary financial practice, in pricing new issues of corporate debt securities of comparable maturity to the remaining term of the Securities to be redeemed.

      “Comparable Treasury Price” means, with respect to any Redemption Date for any Securities, the average of all Reference Treasury Dealer Quotations (as defined below) obtained.

      “Independent Investment Banker” means one of the Reference Treasury Dealers appointed by the Trustee after consultation with the Company.

      “Reference Treasury Dealer” means each of Citigroup Global Markets Inc., Goldman, Sachs & Co. and J.P. Morgan Securities Inc. If any Reference Treasury Dealer ceases to be a primary U.S. government securities dealer in New York City (a “Primary Treasury Dealer”), the Company shall substitute another Primary Treasury Dealer for that dealer.

      “Reference Treasury Dealer Quotations” means, with respect to each Reference Treasury Dealer and any Redemption Date, the average, as determined by the Trustee, of the bid and asked prices for the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) quoted in writing to the Trustee by that Reference Treasury Dealer at 5:00 p.m. on the third Business Day preceding the Redemption Date.

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      Notice of any redemption will be mailed at least 30 calendar days but no more than 60 calendar days before the Redemption Date to each holder of the Securities of this series.

      Unless the Company defaults in payment of the Redemption Price, interest will cease to accrue on the Securities of this series called for redemption on and after the Redemption Date.

      If this Security is redeemed in part only, a new Security or Securities of this series and of like tenor for the unredeemed portion hereof will be issued in the name of the Holder hereof upon the cancellation hereof.

      If an Event of Default with respect to Securities of this series shall occur and be continuing, the principal of the Securities of this series may be declared due and payable in the manner and with the effect provided in the Indenture.

      The Indenture permits, with certain exceptions as therein provided, the amendment thereof and the modification of the rights and obligations of the Company and the rights of the Holders of the Securities of each series to be affected under the Indenture at any time by the Company and the Trustee with the consent of the Holders of a majority in principal amount of the Securities at the time Outstanding of each series to be affected. The Indenture also contains provisions permitting the Holders of specified percentages in principal amount of the Securities of each series at the time Outstanding, on behalf of the Holders of all Securities of such series, to waive compliance by the Company with certain provisions of the Indenture and certain past defaults under the Indenture and their consequences. Any such consent or waiver by the Holder of this Security shall be conclusive and binding upon such Holder and upon all future Holders of this Security and of any Security issued upon the registration of transfer hereof or in exchange hereof or in lieu hereof, whether or not notation of such consent or waiver is made upon this Security.

      No reference herein to the Indenture and no provision of this Security or of the Indenture shall alter or impair the obligation of the Company, which is absolute and unconditional, to pay the principal of and any premium and interest on this Security at the times, place and rate, and in the coin or currency, herein prescribed.

      As provided in the Indenture and subject to certain limitations therein set forth, the transfer of this Security is registrable in the Security Register upon surrender of this Security for registration of transfer at the office or agency of the Company in any place where the principal of and any premium and interest on this Security are payable, duly endorsed by, or accompanied by a written instrument of transfer in form satisfactory to the Company and the Security Registrar duly executed by, the Holder hereof or such Holder’s attorney duly authorized in writing, and thereupon one or more new Securities

17






of this series and of like tenor, of authorized denominations and for the same aggregate principal amount, will be issued to the designated transferee or transferees.

      The Securities of this series are issuable only in registered form without coupons in denominations of $2,000 and any multiple of $1,000 in excess thereof. As provided in the Indenture and subject to certain limitations therein set forth, Securities of this series are exchangeable for a like aggregate principal amount of Securities of this series and of like tenor of a different authorized denomination, as requested by the Holder surrendering the same.

      No service charge shall be made for any such registration of transfer or exchange of Securities, but the Company or the Trustee may require payment of a sum sufficient to cover any tax or other governmental charge that may be imposed in connection with any registration of transfer or exchange of Securities, other than exchanges pursuant to Section 304, 906 or 1107 of the Indenture not involving any transfer.

      Prior to due and proper presentment of this Security for registration of transfer, the Company, the Trustee and any agent of the Company or the Trustee may treat the Person in whose name this Security is registered as the owner hereof for all purposes, whether or not this Security is overdue, and neither the Company, the Trustee nor any such agent shall be affected by notice to the contrary.

      The Indenture provides that the Company, at the Company’s option, (a) will be discharged from any and all obligations in respect of the Securities (except for certain obligations to register the transfer or exchange of Securities, replace stolen, lost or mutilated Securities, maintain paying agencies and hold moneys for payment in trust) or (b) need not comply with certain restrictive covenants of the Indenture, in each case if the Company deposits, in trust, with the Trustee money or U.S. Government Obligations which through the payment of interest thereon and principal thereof in accordance with their terms will provide money, in an amount sufficient to pay all the principal of and premium, if any, and interest on, the Securities on the dates such payments are due in accordance with the terms of such Securities, and certain other conditions are satisfied.

      No recourse shall be had for the payment of the principal of and premium, if any, or interest on this Security, or for any claim based hereon, or otherwise in respect hereof, or based on or in respect of the Indenture or any indenture supplemental thereto, against any incorporator, stockholder, officer, employee, agent or director, as such, past, present or future, of the Company or of any successor corporation, whether by virtue of any constitution, statute or rule of law, or by the enforcement of any assessment or penalty or otherwise, all such liability being, by the acceptance hereof and as part of the consideration for the issue hereof, expressly waived and released.

18






      All terms used in this Security which are defined in the Indenture shall have the meanings assigned to them in the Indenture.

19






Exhibit B-1

Forms of 2016 Notes

THIS SECURITY IS A GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITARY OR A NOMINEE THEREOF. THIS SECURITY MAY NOT BE TRANSFERRED TO, OR REGISTERED OR EXCHANGED FOR SECURITIES REGISTERED IN THE NAME OF, ANY PERSON OTHER THAN THE DEPOSITARY OR A NOMINEE THEREOF, AND NO SUCH TRANSFER MAY BE REGISTERED EXCEPT IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE. EVERY SECURITY AUTHENTICATED AND DELIVERED UPON REGISTRATION OF TRANSFER OF, OR IN EXCHANGE FOR OR IN LIEU OF, THIS SECURITY SHALL BE A GLOBAL SECURITY SUBJECT TO THE FOREGOING, EXCEPT IN SUCH LIMITED CIRCUMSTANCES.

Unless this certificate is presented by an authorized representative of The Depository Trust Company, a New York corporation ("DTC"), to Aetna Inc. or its agent for registration of transfer, exchange or payment, and any certificate issued is registered in the name of Cede & Co. or in such other name as is requested by an authorized representative of DTC (and any payment is made to Cede & Co. or to such other entity as is requested by an authorized representative of DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL inasmuch as the registered owner hereof, Cede & Co., has an interest herein.

AETNA INC.

6.000% SENIOR NOTE DUE 2016

CUSIP: 00817Y AE 8  
   
No. 2016-1 $500,000,000

      AETNA INC., a Pennsylvania corporation (herein called the “Company”), which term includes any successor Person under the Indenture hereinafter referred to, for value received, hereby promises to pay to Cede & Co., or registered assigns, the principal sum of FIVE HUNDRED MILLION Dollars ($500,000,000) upon presentation and surrender of this Security on June 15, 2016, and to pay interest thereon from June 9, 2006 or from the most recent Interest Payment Date to which interest has been paid or duly provided for, semi-annually on June 15 and December 15 in each year, commencing December 15, 2006, at the rate of 6.000% per annum until the principal hereof is paid or made available for payment. The interest so payable, and punctually paid or duly provided for, on any

20






Interest Payment Date will, as provided in such Indenture, be paid to the Person in whose name this Security (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 May 31 or November 30 (whether or not a Business Day), as the case may be, next preceding such Interest Payment Date. Any such interest not so punctually paid or duly provided for will forthwith cease to be payable to the Holder on such Regular Record Date and may either be paid to the Person in whose name this Security (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 Holders of Securities of this series not less than 10 calendar days prior to such Special Record Date, or be paid at any time in any other lawful manner not inconsistent with the requirements of any securities exchange on which the Securities of this series may be listed, and upon such notice as may be required by such exchange, all as more fully provided in said Indenture.

      Payment of the principal of and premium, if any, and interest on this Security will be made at the office or agency of the Company maintained for that purpose in the Borough of Manhattan, City of New York, 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.

      Reference is hereby made to the further provisions of this Security set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. Such provisions include, without limitation, provisions relating to redemption of this Security by the Company.

      Unless the certificate of authentication hereon has been executed by the Trustee referred to on the reverse hereof by manual signature, this Security shall not be entitled to any benefit under the Indenture or be valid or obligatory for any purpose.

21






      IN WITNESS WHEREOF, the Company has caused this instrument to be duly executed under its corporate seal.

Dated: June 9, 2006

AETNA INC.
     
By:  
 
  Name: Alfred P. Quirk, Jr. 
  Title: Vice President, Finance and
Treasurer 

[SEAL]
 
Attest:
 

William C. Baskin III

TRUSTEE'S CERTIFICATE OF AUTHENTICATION

This is one of the Securities of the series designated under, and referred to in, the within-mentioned Indenture.

U.S. BANK NATIONAL ASSOCIATION, as Trustee 
   
By:  
 
  Authorized Officer
   

22






(Back of Note)

      This Security is one of a duly authorized issue of securities of the Company (herein called the “Securities”), issued and to be issued in one or more series under a Senior Indenture, dated as of March 2, 2001 (herein called the “Indenture”), between the Company, as issuer, and U.S. Bank National Association (as successor in interest to State Street Bank and Trust Company), as Trustee (herein called the “Trustee”, which term includes any successor trustee under the Indenture), to which Indenture and all indentures supplemental thereto reference is hereby made for a statement of the respective rights, limitations of rights, duties and immunities thereunder of the Company, the Trustee and the Holders of the Securities and of the terms upon which the Securities are, and are to be, authenticated and delivered. This Security is one of the series designated on the face hereof, initially limited in aggregate principal amount to $750,000,000, subject to future issuances of additional Securities pursuant to Section 301 of the Indenture.

      The Securities of this series are subject to redemption upon not less than 30 calendar days’ nor more than 60 calendar days’ notice by mail, at any time, in whole or in part, at the election of the Company, at a Redemption Price equal to the greater of:

    • 100% of the principal amount of the Securities to be redeemed, or

    • the sum of the present values of the remaining scheduled payments of principal and interest on the Securities to be redeemed from the Redemption Date to the date of Maturity for such Securities discounted to the Redemption Date on a semiannual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate (as defined below) plus 20 basis points,

      plus any interest accrued but not paid to the Redemption Date.

      “Treasury Rate” means, with respect to any Redemption Date for any portion of the Securities,

    • the yield, under the heading which represents the average for the immediately preceding week, appearing in the most recently published statistical release designated “H.15(519)” or any successor publication which is published weekly by the Board of Governors of the Federal Reserve System and which establishes yields on actively traded United States Treasury securities adjusted to constant maturity under the caption 23





“Treasury Constant Maturities,” for the maturity corresponding to the Comparable Treasury Issue (if no maturity is within three months before or after the date of Maturity for the Securities to be redeemed, yields for the two published maturities most closely corresponding to the Comparable Treasury Issue will be determined and the Treasury Rate shall be interpolated or extrapolated from those yields on a straight line basis, rounding to the nearest month) or

  • if the release referred to in the previous bullet (or any successor release) is not published during the week preceding the calculation date or does not contain the yields referred to above, the rate per annum equal to the semi-annual equivalent yield to maturity of the Comparable Treasury Issue, calculated using a price for the Comparable Treasury Issue (expressed as a percentage of its principal amount) equal to the Comparable Treasury Price for that Redemption Date.

The Treasury Rate will be calculated on the third Business Day preceding the Redemption Date.

      “Comparable Treasury Issue” means the United States Treasury security selected by an “Independent Investment Banker” as having a maturity comparable to the remaining term of the Securities to be redeemed that would be utilized, at the time of selection and in accordance with customary financial practice, in pricing new issues of corporate debt securities of comparable maturity to the remaining term of the Securities to be redeemed.

      “Comparable Treasury Price” means, with respect to any Redemption Date for any Securities, the average of all Reference Treasury Dealer Quotations (as defined below) obtained.

      “Independent Investment Banker” means one of the Reference Treasury Dealers appointed by the Trustee after consultation with the Company.

      “Reference Treasury Dealer” means each of Citigroup Global Markets Inc., Goldman, Sachs & Co. and J.P. Morgan Securities Inc. If any Reference Treasury Dealer ceases to be a primary U.S. government securities dealer in New York City (a “Primary Treasury Dealer”), the Company shall substitute another Primary Treasury Dealer for that dealer.

      “Reference Treasury Dealer Quotations” means, with respect to each Reference Treasury Dealer and any Redemption Date, the average, as determined by the Trustee, of the bid and asked prices for the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) quoted in writing to the Trustee by that Reference Treasury Dealer at 5:00 p.m. on the third Business Day preceding the Redemption Date.

24






      Notice of any redemption will be mailed at least 30 calendar days but no more than 60 calendar days before the Redemption Date to each holder of the Securities of this series.

      Unless the Company defaults in payment of the Redemption Price, interest will cease to accrue on the Securities of this series called for redemption on and after the Redemption Date.

      If this Security is redeemed in part only, a new Security or Securities of this series and of like tenor for the unredeemed portion hereof will be issued in the name of the Holder hereof upon the cancellation hereof.

      If an Event of Default with respect to Securities of this series shall occur and be continuing, the principal of the Securities of this series may be declared due and payable in the manner and with the effect provided in the Indenture.

      The Indenture permits, with certain exceptions as therein provided, the amendment thereof and the modification of the rights and obligations of the Company and the rights of the Holders of the Securities of each series to be affected under the Indenture at any time by the Company and the Trustee with the consent of the Holders of a majority in principal amount of the Securities at the time Outstanding of each series to be affected. The Indenture also contains provisions permitting the Holders of specified percentages in principal amount of the Securities of each series at the time Outstanding, on behalf of the Holders of all Securities of such series, to waive compliance by the Company with certain provisions of the Indenture and certain past defaults under the Indenture and their consequences. Any such consent or waiver by the Holder of this Security shall be conclusive and binding upon such Holder and upon all future Holders of this Security and of any Security issued upon the registration of transfer hereof or in exchange hereof or in lieu hereof, whether or not notation of such consent or waiver is made upon this Security.

      No reference herein to the Indenture and no provision of this Security or of the Indenture shall alter or impair the obligation of the Company, which is absolute and unconditional, to pay the principal of and any premium and interest on this Security at the times, place and rate, and in the coin or currency, herein prescribed.

      As provided in the Indenture and subject to certain limitations therein set forth, the transfer of this Security is registrable in the Security Register upon surrender of this Security for registration of transfer at the office or agency of the Company in any place where the principal of and any premium and interest on this Security are payable, duly endorsed by, or accompanied by a written instrument of transfer in form satisfactory to the Company and the Security Registrar duly executed by, the Holder hereof or such Holder’s attorney duly authorized in writing, and thereupon one or more new Securities

25






of this series and of like tenor, of authorized denominations and for the same aggregate principal amount, will be issued to the designated transferee or transferees.

      The Securities of this series are issuable only in registered form without coupons in denominations of $2,000 and any multiple of $1,000 in excess thereof. As provided in the Indenture and subject to certain limitations therein set forth, Securities of this series are exchangeable for a like aggregate principal amount of Securities of this series and of like tenor of a different authorized denomination, as requested by the Holder surrendering the same.

      No service charge shall be made for any such registration of transfer or exchange of Securities, but the Company or the Trustee may require payment of a sum sufficient to cover any tax or other governmental charge that may be imposed in connection with any registration of transfer or exchange of Securities, other than exchanges pursuant to Section 304, 906 or 1107 of the Indenture not involving any transfer.

      Prior to due and proper presentment of this Security for registration of transfer, the Company, the Trustee and any agent of the Company or the Trustee may treat the Person in whose name this Security is registered as the owner hereof for all purposes, whether or not this Security is overdue, and neither the Company, the Trustee nor any such agent shall be affected by notice to the contrary.

      The Indenture provides that the Company, at the Company’s option, (a) will be discharged from any and all obligations in respect of the Securities (except for certain obligations to register the transfer or exchange of Securities, replace stolen, lost or mutilated Securities, maintain paying agencies and hold moneys for payment in trust) or (b) need not comply with certain restrictive covenants of the Indenture, in each case if the Company deposits, in trust, with the Trustee money or U.S. Government Obligations which through the payment of interest thereon and principal thereof in accordance with their terms will provide money, in an amount sufficient to pay all the principal of and premium, if any, and interest on, the Securities on the dates such payments are due in accordance with the terms of such Securities, and certain other conditions are satisfied.

      No recourse shall be had for the payment of the principal of and premium, if any, or interest on this Security, or for any claim based hereon, or otherwise in respect hereof, or based on or in respect of the Indenture or any indenture supplemental thereto, against any incorporator, stockholder, officer, employee, agent or director, as such, past, present or future, of the Company or of any successor corporation, whether by virtue of any constitution, statute or rule of law, or by the enforcement of any assessment or penalty or otherwise, all such liability being, by the acceptance hereof and as part of the consideration for the issue hereof, expressly waived and released.

26






      All terms used in this Security which are defined in the Indenture shall have the meanings assigned to them in the Indenture.

27






THIS SECURITY IS A GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITARY OR A NOMINEE THEREOF. THIS SECURITY MAY NOT BE TRANSFERRED TO, OR REGISTERED OR EXCHANGED FOR SECURITIES REGISTERED IN THE NAME OF, ANY PERSON OTHER THAN THE DEPOSITARY OR A NOMINEE THEREOF, AND NO SUCH TRANSFER MAY BE REGISTERED EXCEPT IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE. EVERY SECURITY AUTHENTICATED AND DELIVERED UPON REGISTRATION OF TRANSFER OF, OR IN EXCHANGE FOR OR IN LIEU OF, THIS SECURITY SHALL BE A GLOBAL SECURITY SUBJECT TO THE FOREGOING, EXCEPT IN SUCH LIMITED CIRCUMSTANCES.

Unless this certificate is presented by an authorized representative of The Depository Trust Company, a New York corporation ("DTC"), to Aetna Inc. or its agent for registration of transfer, exchange or payment, and any certificate issued is registered in the name of Cede & Co. or in such other name as is requested by an authorized representative of DTC (and any payment is made to Cede & Co. or to such other entity as is requested by an authorized representative of DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL inasmuch as the registered owner hereof, Cede & Co., has an interest herein.

AETNA INC.

6.000% SENIOR NOTE DUE 2016

CUSIP: 00817Y AE 8  
   
No. 2016-2 $250,000,000

      AETNA INC., a Pennsylvania corporation (herein called the “Company”), which term includes any successor Person under the Indenture hereinafter referred to, for value received, hereby promises to pay to Cede & Co., or registered assigns, the principal sum of TWO HUNDRED FIFTY MILLION Dollars ($250,000,000) upon presentation and surrender of this Security on June 15, 2016, and to pay interest thereon from June 9, 2006 or from the most recent Interest Payment Date to which interest has been paid or duly provided for, semi-annually on June 15 and December 15 in each year, commencing December 15, 2006, at the rate of 6.000% per annum until the principal hereof is paid or 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 Security (or one or more Predecessor Securities) is registered at the close of business on the Regular Record Date for such interest, which

28






shall be the May 31 or November 30 (whether or not a Business Day), as the case may be, next preceding such Interest Payment Date. Any such interest not so punctually paid or duly provided for will forthwith cease to be payable to the Holder on such Regular Record Date and may either be paid to the Person in whose name this Security (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 Holders of Securities of this series not less than 10 calendar days prior to such Special Record Date, or be paid at any time in any other lawful manner not inconsistent with the requirements of any securities exchange on which the Securities of this series may be listed, and upon such notice as may be required by such exchange, all as more fully provided in said Indenture.

      Payment of the principal of and premium, if any, and interest on this Security will be made at the office or agency of the Company maintained for that purpose in the Borough of Manhattan, City of New York, 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.

      Reference is hereby made to the further provisions of this Security set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. Such provisions include, without limitation, provisions relating to redemption of this Security by the Company.

      Unless the certificate of authentication hereon has been executed by the Trustee referred to on the reverse hereof by manual signature, this Security shall not be entitled to any benefit under the Indenture or be valid or obligatory for any purpose.

29






      IN WITNESS WHEREOF, the Company has caused this instrument to be duly executed under its corporate seal.

Dated: June 9, 2006

AETNA INC.
     
By:  
 
  Name: Alfred P. Quirk, Jr. 
  Title: Vice President, Finance and
Treasurer 


[SEAL]
 
Attest:
 

William C. Baskin III

TRUSTEE'S CERTIFICATE OF AUTHENTICATION

This is one of the Securities of the series designated under, and referred to in, the within-mentioned Indenture.

U.S. BANK NATIONAL ASSOCIATION, as Trustee 
   
By:  
 
  Authorized Officer
   

30






(Back of Note)

      This Security is one of a duly authorized issue of securities of the Company (herein called the “Securities”), issued and to be issued in one or more series under a Senior Indenture, dated as of March 2, 2001 (herein called the “Indenture”), between the Company, as issuer, and U.S. Bank National Association (as successor in interest to State Street Bank and Trust Company), as Trustee (herein called the “Trustee”, which term includes any successor trustee under the Indenture), to which Indenture and all indentures supplemental thereto reference is hereby made for a statement of the respective rights, limitations of rights, duties and immunities thereunder of the Company, the Trustee and the Holders of the Securities and of the terms upon which the Securities are, and are to be, authenticated and delivered. This Security is one of the series designated on the face hereof, initially limited in aggregate principal amount to $750,000,000, subject to future issuances of additional Securities pursuant to Section 301 of the Indenture.

      The Securities of this series are subject to redemption upon not less than 30 calendar days’ nor more than 60 calendar days’ notice by mail, at any time, in whole or in part, at the election of the Company, at a Redemption Price equal to the greater of:

    • 100% of the principal amount of the Securities to be redeemed, or

    • the sum of the present values of the remaining scheduled payments of principal and interest on the Securities to be redeemed from the Redemption Date to the date of Maturity for such Securities discounted to the Redemption Date on a semiannual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate (as defined below) plus 20 basis points,

     plus any interest accrued but not paid to the Redemption Date.

      “Treasury Rate” means, with respect to any Redemption Date for any portion of the Securities,

    • the yield, under the heading which represents the average for the immediately preceding week, appearing in the most recently published statistical release designated “H.15(519)” or any successor publication which is published weekly by the Board of Governors of the Federal Reserve System and which establishes yields on actively traded United States Treasury securities adjusted to constant maturity under the caption

31






“Treasury Constant Maturities,” for the maturity corresponding to the Comparable Treasury Issue (if no maturity is within three months before or after the date of Maturity for the Securities to be redeemed, yields for the two published maturities most closely corresponding to the Comparable Treasury Issue will be determined and the Treasury Rate shall be interpolated or extrapolated from those yields on a straight line basis, rounding to the nearest month) or

  • if the release referred to in the previous bullet (or any successor release) is not published during the week preceding the calculation date or does not contain the yields referred to above, the rate per annum equal to the semi-annual equivalent yield to maturity of the Comparable Treasury Issue, calculated using a price for the Comparable Treasury Issue (expressed as a percentage of its principal amount) equal to the Comparable Treasury Price for that Redemption Date.

The Treasury Rate will be calculated on the third Business Day preceding the Redemption Date.

      “Comparable Treasury Issue” means the United States Treasury security selected by an “Independent Investment Banker” as having a maturity comparable to the remaining term of the Securities to be redeemed that would be utilized, at the time of selection and in accordance with customary financial practice, in pricing new issues of corporate debt securities of comparable maturity to the remaining term of the Securities to be redeemed.

      “Comparable Treasury Price” means, with respect to any Redemption Date for any Securities, the average of all Reference Treasury Dealer Quotations (as defined below) obtained.

      “Independent Investment Banker” means one of the Reference Treasury Dealers appointed by the Trustee after consultation with the Company.

      “Reference Treasury Dealer” means each of Citigroup Global Markets Inc., Goldman, Sachs & Co. and J.P. Morgan Securities Inc. If any Reference Treasury Dealer ceases to be a primary U.S. government securities dealer in New York City (a “Primary Treasury Dealer”), the Company shall substitute another Primary Treasury Dealer for that dealer.

      “Reference Treasury Dealer Quotations” means, with respect to each Reference Treasury Dealer and any Redemption Date, the average, as determined by the Trustee, of the bid and asked prices for the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) quoted in writing to the Trustee by that Reference Treasury Dealer at 5:00 p.m. on the third Business Day preceding the Redemption Date.

32






      Notice of any redemption will be mailed at least 30 calendar days but no more than 60 calendar days before the Redemption Date to each holder of the Securities of this series.

      Unless the Company defaults in payment of the Redemption Price, interest will cease to accrue on the Securities of this series called for redemption on and after the Redemption Date.

      If this Security is redeemed in part only, a new Security or Securities of this series and of like tenor for the unredeemed portion hereof will be issued in the name of the Holder hereof upon the cancellation hereof.

      If an Event of Default with respect to Securities of this series shall occur and be continuing, the principal of the Securities of this series may be declared due and payable in the manner and with the effect provided in the Indenture.

      The Indenture permits, with certain exceptions as therein provided, the amendment thereof and the modification of the rights and obligations of the Company and the rights of the Holders of the Securities of each series to be affected under the Indenture at any time by the Company and the Trustee with the consent of the Holders of a majority in principal amount of the Securities at the time Outstanding of each series to be affected. The Indenture also contains provisions permitting the Holders of specified percentages in principal amount of the Securities of each series at the time Outstanding, on behalf of the Holders of all Securities of such series, to waive compliance by the Company with certain provisions of the Indenture and certain past defaults under the Indenture and their consequences. Any such consent or waiver by the Holder of this Security shall be conclusive and binding upon such Holder and upon all future Holders of this Security and of any Security issued upon the registration of transfer hereof or in exchange hereof or in lieu hereof, whether or not notation of such consent or waiver is made upon this Security.

      No reference herein to the Indenture and no provision of this Security or of the Indenture shall alter or impair the obligation of the Company, which is absolute and unconditional, to pay the principal of and any premium and interest on this Security at the times, place and rate, and in the coin or currency, herein prescribed.

      As provided in the Indenture and subject to certain limitations therein set forth, the transfer of this Security is registrable in the Security Register upon surrender of this Security for registration of transfer at the office or agency of the Company in any place where the principal of and any premium and interest on this Security are payable, duly endorsed by, or accompanied by a written instrument of transfer in form satisfactory to the Company and the Security Registrar duly executed by, the Holder hereof or such Holder’s attorney duly authorized in writing, and thereupon one or more new Securities

33






of this series and of like tenor, of authorized denominations and for the same aggregate principal amount, will be issued to the designated transferee or transferees.

      The Securities of this series are issuable only in registered form without coupons in denominations of $2,000 and any multiple of $1,000 in excess thereof. As provided in the Indenture and subject to certain limitations therein set forth, Securities of this series are exchangeable for a like aggregate principal amount of Securities of this series and of like tenor of a different authorized denomination, as requested by the Holder surrendering the same.

      No service charge shall be made for any such registration of transfer or exchange of Securities, but the Company or the Trustee may require payment of a sum sufficient to cover any tax or other governmental charge that may be imposed in connection with any registration of transfer or exchange of Securities, other than exchanges pursuant to Section 304, 906 or 1107 of the Indenture not involving any transfer.

      Prior to due and proper presentment of this Security for registration of transfer, the Company, the Trustee and any agent of the Company or the Trustee may treat the Person in whose name this Security is registered as the owner hereof for all purposes, whether or not this Security is overdue, and neither the Company, the Trustee nor any such agent shall be affected by notice to the contrary.

      The Indenture provides that the Company, at the Company’s option, (a) will be discharged from any and all obligations in respect of the Securities (except for certain obligations to register the transfer or exchange of Securities, replace stolen, lost or mutilated Securities, maintain paying agencies and hold moneys for payment in trust) or (b) need not comply with certain restrictive covenants of the Indenture, in each case if the Company deposits, in trust, with the Trustee money or U.S. Government Obligations which through the payment of interest thereon and principal thereof in accordance with their terms will provide money, in an amount sufficient to pay all the principal of and premium, if any, and interest on, the Securities on the dates such payments are due in accordance with the terms of such Securities, and certain other conditions are satisfied.

      No recourse shall be had for the payment of the principal of and premium, if any, or interest on this Security, or for any claim based hereon, or otherwise in respect hereof, or based on or in respect of the Indenture or any indenture supplemental thereto, against any incorporator, stockholder, officer, employee, agent or director, as such, past, present or future, of the Company or of any successor corporation, whether by virtue of any constitution, statute or rule of law, or by the enforcement of any assessment or penalty or otherwise, all such liability being, by the acceptance hereof and as part of the consideration for the issue hereof, expressly waived and released.

34






      All terms used in this Security which are defined in the Indenture shall have the meanings assigned to them in the Indenture.

35






Exhibit C-1

Forms of 2036 Notes

THIS SECURITY IS A GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITARY OR A NOMINEE THEREOF. THIS SECURITY MAY NOT BE TRANSFERRED TO, OR REGISTERED OR EXCHANGED FOR SECURITIES REGISTERED IN THE NAME OF, ANY PERSON OTHER THAN THE DEPOSITARY OR A NOMINEE THEREOF, AND NO SUCH TRANSFER MAY BE REGISTERED EXCEPT IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE. EVERY SECURITY AUTHENTICATED AND DELIVERED UPON REGISTRATION OF TRANSFER OF, OR IN EXCHANGE FOR OR IN LIEU OF, THIS SECURITY SHALL BE A GLOBAL SECURITY SUBJECT TO THE FOREGOING, EXCEPT IN SUCH LIMITED CIRCUMSTANCES.

Unless this certificate is presented by an authorized representative of The Depository Trust Company, a New York corporation ("DTC"), to Aetna Inc. or its agent for registration of transfer, exchange or payment, and any certificate issued is registered in the name of Cede & Co. or in such other name as is requested by an authorized representative of DTC (and any payment is made to Cede & Co. or to such other entity as is requested by an authorized representative of DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL inasmuch as the registered owner hereof, Cede & Co., has an interest herein.

AETNA INC.

6.625% SENIOR NOTE DUE 2036

CUSIP: 00817Y AF 5  
   
No. 2036-1 $500,000,000

      AETNA INC., a Pennsylvania corporation (herein called the “Company”), which term includes any successor Person under the Indenture hereinafter referred to, for value received, hereby promises to pay to Cede & Co., or registered assigns, the principal sum of FIVE HUNDRED MILLION Dollars ($500,000,000) upon presentation and surrender of this Security on June 15, 2036, and to pay interest thereon from June 9, 2006 or from the most recent Interest Payment Date to which interest has been paid or duly provided for, semi-annually on June 15 and December 15 in each year, commencing December 15, 2006, at the rate of 6.625% per annum until the principal hereof is paid or made available for payment. The interest so payable, and punctually paid or duly provided for, on any

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Interest Payment Date will, as provided in such Indenture, be paid to the Person in whose name this Security (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 May 31 or November 30 (whether or not a Business Day), as the case may be, next preceding such Interest Payment Date. Any such interest not so punctually paid or duly provided for will forthwith cease to be payable to the Holder on such Regular Record Date and may either be paid to the Person in whose name this Security (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 Holders of Securities of this series not less than 10 calendar days prior to such Special Record Date, or be paid at any time in any other lawful manner not inconsistent with the requirements of any securities exchange on which the Securities of this series may be listed, and upon such notice as may be required by such exchange, all as more fully provided in said Indenture.

      Payment of the principal of and premium, if any, and interest on this Security will be made at the office or agency of the Company maintained for that purpose in the Borough of Manhattan, City of New York, 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.

      Reference is hereby made to the further provisions of this Security set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. Such provisions include, without limitation, provisions relating to redemption of this Security by the Company.

      Unless the certificate of authentication hereon has been executed by the Trustee referred to on the reverse hereof by manual signature, this Security shall not be entitled to any benefit under the Indenture or be valid or obligatory for any purpose.

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      IN WITNESS WHEREOF, the Company has caused this instrument to be duly executed under its corporate seal.

Dated: June 9, 2006

AETNA INC.
     
By:  
 
  Name: Alfred P. Quirk, Jr. 
  Title: Vice President, Finance and
Treasurer 


[SEAL]
 
Attest:
 

William C. Baskin III

TRUSTEE'S CERTIFICATE OF AUTHENTICATION

This is one of the Securities of the series designated under, and referred to in, the within-mentioned Indenture.

U.S. BANK NATIONAL ASSOCIATION, as Trustee 
   
By:  
 
  Authorized Officer
   

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(Back of Note)

      This Security is one of a duly authorized issue of securities of the Company (herein called the “Securities”), issued and to be issued in one or more series under a Senior Indenture, dated as of March 2, 2001 (herein called the “Indenture”), between the Company, as issuer, and U.S. Bank National Association (as successor in interest to State Street Bank and Trust Company), as Trustee (herein called the “Trustee”, which term includes any successor trustee under the Indenture), to which Indenture and all indentures supplemental thereto reference is hereby made for a statement of the respective rights, limitations of rights, duties and immunities thereunder of the Company, the Trustee and the Holders of the Securities and of the terms upon which the Securities are, and are to be, authenticated and delivered. This Security is one of the series designated on the face hereof, initially limited in aggregate principal amount to $800,000,000, subject to future issuances of additional Securities pursuant to Section 301 of the Indenture.

      The Securities of this series are subject to redemption upon not less than 30 calendar days’ nor more than 60 calendar days’ notice by mail, at any time, in whole or in part, at the election of the Company, at a Redemption Price equal to the greater of:

  • 100% of the principal amount of the Securities to be redeemed, or

  • the sum of the present values of the remaining scheduled payments of principal and interest on the Securities to be redeemed from the Redemption Date to the date of Maturity for such Securities discounted to the Redemption Date on a semiannual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate (as defined below) plus 25 basis points,

     plus any interest accrued but not paid to the Redemption Date.

      “Treasury Rate” means, with respect to any Redemption Date for any portion of the Securities,

  • the yield, under the heading which represents the average for the immediately preceding week, appearing in the most recently published statistical release designated “H.15(519)” or any successor publication which is published weekly by the Board of Governors of the Federal Reserve System and which establishes yields on actively traded United States Treasury securities adjusted to constant maturity under the caption “Treasury Constant Maturities,” for the maturity corresponding to the

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Comparable Treasury Issue (if no maturity is within three months before or after the date of Maturity for the Securities to be redeemed, yields for the two published maturities most closely corresponding to the Comparable Treasury Issue will be determined and the Treasury Rate shall be interpolated or extrapolated from those yields on a straight line basis, rounding to the nearest month) or

  • if the release referred to in the previous bullet (or any successor release) is not published during the week preceding the calculation date or does not contain the yields referred to above, the rate per annum equal to the semi-annual equivalent yield to maturity of the Comparable Treasury Issue, calculated using a price for the Comparable Treasury Issue (expressed as a percentage of its principal amount) equal to the Comparable Treasury Price for that Redemption Date.

The Treasury Rate will be calculated on the third Business Day preceding the Redemption Date.

      “Comparable Treasury Issue” means the United States Treasury security selected by an “Independent Investment Banker” as having a maturity comparable to the remaining term of the Securities to be redeemed that would be utilized, at the time of selection and in accordance with customary financial practice, in pricing new issues of corporate debt securities of comparable maturity to the remaining term of the Securities to be redeemed.

      “Comparable Treasury Price” means, with respect to any Redemption Date for any Securities, the average of all Reference Treasury Dealer Quotations (as defined below) obtained.

      “Independent Investment Banker” means one of the Reference Treasury Dealers appointed by the Trustee after consultation with the Company.

      “Reference Treasury Dealer” means each of Citigroup Global Markets Inc., Goldman, Sachs & Co. and J.P. Morgan Securities Inc. If any Reference Treasury Dealer ceases to be a primary U.S. government securities dealer in New York City (a “Primary Treasury Dealer”), the Company shall substitute another Primary Treasury Dealer for that dealer.

      “Reference Treasury Dealer Quotations” means, with respect to each Reference Treasury Dealer and any Redemption Date, the average, as determined by the Trustee, of the bid and asked prices for the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) quoted in writing to the Trustee by that Reference Treasury Dealer at 5:00 p.m. on the third Business Day preceding the Redemption Date.

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      Notice of any redemption will be mailed at least 30 calendar days but no more than 60 calendar days before the Redemption Date to each holder of the Securities of this series.

      Unless the Company defaults in payment of the Redemption Price, interest will cease to accrue on the Securities of this series called for redemption on and after the Redemption Date.

      If this Security is redeemed in part only, a new Security or Securities of this series and of like tenor for the unredeemed portion hereof will be issued in the name of the Holder hereof upon the cancellation hereof.

      If an Event of Default with respect to Securities of this series shall occur and be continuing, the principal of the Securities of this series may be declared due and payable in the manner and with the effect provided in the Indenture.

      The Indenture permits, with certain exceptions as therein provided, the amendment thereof and the modification of the rights and obligations of the Company and the rights of the Holders of the Securities of each series to be affected under the Indenture at any time by the Company and the Trustee with the consent of the Holders of a majority in principal amount of the Securities at the time Outstanding of each series to be affected. The Indenture also contains provisions permitting the Holders of specified percentages in principal amount of the Securities of each series at the time Outstanding, on behalf of the Holders of all Securities of such series, to waive compliance by the Company with certain provisions of the Indenture and certain past defaults under the Indenture and their consequences. Any such consent or waiver by the Holder of this Security shall be conclusive and binding upon such Holder and upon all future Holders of this Security and of any Security issued upon the registration of transfer hereof or in exchange hereof or in lieu hereof, whether or not notation of such consent or waiver is made upon this Security.

      No reference herein to the Indenture and no provision of this Security or of the Indenture shall alter or impair the obligation of the Company, which is absolute and unconditional, to pay the principal of and any premium and interest on this Security at the times, place and rate, and in the coin or currency, herein prescribed.

      As provided in the Indenture and subject to certain limitations therein set forth, the transfer of this Security is registrable in the Security Register upon surrender of this Security for registration of transfer at the office or agency of the Company in any place where the principal of and any premium and interest on this Security are payable, duly endorsed by, or accompanied by a written instrument of transfer in form satisfactory to the Company and the Security Registrar duly executed by, the Holder hereof or such Holder’s attorney duly authorized in writing, and thereupon one or more new Securities

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of this series and of like tenor, of authorized denominations and for the same aggregate principal amount, will be issued to the designated transferee or transferees.

      The Securities of this series are issuable only in registered form without coupons in denominations of $2,000 and any multiple of $1,000 in excess thereof. As provided in the Indenture and subject to certain limitations therein set forth, Securities of this series are exchangeable for a like aggregate principal amount of Securities of this series and of like tenor of a different authorized denomination, as requested by the Holder surrendering the same.

      No service charge shall be made for any such registration of transfer or exchange of Securities, but the Company or the Trustee may require payment of a sum sufficient to cover any tax or other governmental charge that may be imposed in connection with any registration of transfer or exchange of Securities, other than exchanges pursuant to Section 304, 906 or 1107 of the Indenture not involving any transfer.

      Prior to due and proper presentment of this Security for registration of transfer, the Company, the Trustee and any agent of the Company or the Trustee may treat the Person in whose name this Security is registered as the owner hereof for all purposes, whether or not this Security is overdue, and neither the Company, the Trustee nor any such agent shall be affected by notice to the contrary.

      The Indenture provides that the Company, at the Company’s option, (a) will be discharged from any and all obligations in respect of the Securities (except for certain obligations to register the transfer or exchange of Securities, replace stolen, lost or mutilated Securities, maintain paying agencies and hold moneys for payment in trust) or (b) need not comply with certain restrictive covenants of the Indenture, in each case if the Company deposits, in trust, with the Trustee money or U.S. Government Obligations which through the payment of interest thereon and principal thereof in accordance with their terms will provide money, in an amount sufficient to pay all the principal of and premium, if any, and interest on, the Securities on the dates such payments are due in accordance with the terms of such Securities, and certain other conditions are satisfied.

      No recourse shall be had for the payment of the principal of and premium, if any, or interest on this Security, or for any claim based hereon, or otherwise in respect hereof, or based on or in respect of the Indenture or any indenture supplemental thereto, against any incorporator, stockholder, officer, employee, agent or director, as such, past, present or future, of the Company or of any successor corporation, whether by virtue of any constitution, statute or rule of law, or by the enforcement of any assessment or penalty or otherwise, all such liability being, by the acceptance hereof and as part of the consideration for the issue hereof, expressly waived and released.

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      All terms used in this Security which are defined in the Indenture shall have the meanings assigned to them in the Indenture.

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THIS SECURITY IS A GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITARY OR A NOMINEE THEREOF. THIS SECURITY MAY NOT BE TRANSFERRED TO, OR REGISTERED OR EXCHANGED FOR SECURITIES REGISTERED IN THE NAME OF, ANY PERSON OTHER THAN THE DEPOSITARY OR A NOMINEE THEREOF, AND NO SUCH TRANSFER MAY BE REGISTERED EXCEPT IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE. EVERY SECURITY AUTHENTICATED AND DELIVERED UPON REGISTRATION OF TRANSFER OF, OR IN EXCHANGE FOR OR IN LIEU OF, THIS SECURITY SHALL BE A GLOBAL SECURITY SUBJECT TO THE FOREGOING, EXCEPT IN SUCH LIMITED CIRCUMSTANCES.

Unless this certificate is presented by an authorized representative of The Depository Trust Company, a New York corporation ("DTC"), to Aetna Inc. or its agent for registration of transfer, exchange or payment, and any certificate issued is registered in the name of Cede & Co. or in such other name as is requested by an authorized representative of DTC (and any payment is made to Cede & Co. or to such other entity as is requested by an authorized representative of DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL inasmuch as the registered owner hereof, Cede & Co., has an interest herein.

AETNA INC.

6.625% SENIOR NOTE DUE 2036

CUSIP: 00817Y AF 5  
   
No. 2036-2 $300,000,000

      AETNA INC., a Pennsylvania corporation (herein called the “Company”), which term includes any successor Person under the Indenture hereinafter referred to, for value received, hereby promises to pay to Cede & Co., or registered assigns, the principal sum of THREE HUNDRED MILLION Dollars ($300,000,000) upon presentation and surrender of this Security on June 15, 2036, and to pay interest thereon from June 9, 2006 or from the most recent Interest Payment Date to which interest has been paid or duly provided for, semi-annually on June 15 and December 15 in each year, commencing December 15, 2006, at the rate of 6.625% per annum until the principal hereof is paid or 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 Security (or one or more Predecessor Securities) is registered at the close of business on the Regular Record Date for such interest, which

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shall be the May 31 or November 30 (whether or not a Business Day), as the case may be, next preceding such Interest Payment Date. Any such interest not so punctually paid or duly provided for will forthwith cease to be payable to the Holder on such Regular Record Date and may either be paid to the Person in whose name this Security (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 Holders of Securities of this series not less than 10 calendar days prior to such Special Record Date, or be paid at any time in any other lawful manner not inconsistent with the requirements of any securities exchange on which the Securities of this series may be listed, and upon such notice as may be required by such exchange, all as more fully provided in said Indenture.

      Payment of the principal of and premium, if any, and interest on this Security will be made at the office or agency of the Company maintained for that purpose in the Borough of Manhattan, City of New York, 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.

      Reference is hereby made to the further provisions of this Security set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. Such provisions include, without limitation, provisions relating to redemption of this Security by the Company.

      Unless the certificate of authentication hereon has been executed by the Trustee referred to on the reverse hereof by manual signature, this Security shall not be entitled to any benefit under the Indenture or be valid or obligatory for any purpose.

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      IN WITNESS WHEREOF, the Company has caused this instrument to be duly executed under its corporate seal.

Dated: June 9, 2006

AETNA INC.
     
By:  
 
  Name: Alfred P. Quirk, Jr. 
  Title: Vice President, Finance and
Treasurer 


[SEAL]
 
Attest:
 

William C. Baskin III

TRUSTEE'S CERTIFICATE OF AUTHENTICATION

This is one of the Securities of the series designated under, and referred to in, the within-mentioned Indenture.

U.S. BANK NATIONAL ASSOCIATION, as Trustee 
   
By:  
 
  Authorized Officer
   

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(Back of Note)

      This Security is one of a duly authorized issue of securities of the Company (herein called the “Securities”), issued and to be issued in one or more series under a Senior Indenture, dated as of March 2, 2001 (herein called the “Indenture”), between the Company, as issuer, and U.S. Bank National Association (as successor in interest to State Street Bank and Trust Company), as Trustee (herein called the “Trustee”, which term includes any successor trustee under the Indenture), to which Indenture and all indentures supplemental thereto reference is hereby made for a statement of the respective rights, limitations of rights, duties and immunities thereunder of the Company, the Trustee and the Holders of the Securities and of the terms upon which the Securities are, and are to be, authenticated and delivered. This Security is one of the series designated on the face hereof, initially limited in aggregate principal amount to $800,000,000, subject to future issuances of additional Securities pursuant to Section 301 of the Indenture.

      The Securities of this series are subject to redemption upon not less than 30 calendar days’ nor more than 60 calendar days’ notice by mail, at any time, in whole or in part, at the election of the Company, at a Redemption Price equal to the greater of:

  • 100% of the principal amount of the Securities to be redeemed, or

  • the sum of the present values of the remaining scheduled payments of principal and interest on the Securities to be redeemed from the Redemption Date to the date of Maturity for such Securities discounted to the Redemption Date on a semiannual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate (as defined below) plus 25 basis points,

     plus any interest accrued but not paid to the Redemption Date.

      “Treasury Rate” means, with respect to any Redemption Date for any portion of the Securities,

  • the yield, under the heading which represents the average for the immediately preceding week, appearing in the most recently published statistical release designated “H.15(519)” or any successor publication which is published weekly by the Board of Governors of the Federal Reserve System and which establishes yields on actively traded United States Treasury securities adjusted to constant maturity under the caption

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“Treasury Constant Maturities,” for the maturity corresponding to the Comparable Treasury Issue (if no maturity is within three months before or after the date of Maturity for the Securities to be redeemed, yields for the two published maturities most closely corresponding to the Comparable Treasury Issue will be determined and the Treasury Rate shall be interpolated or extrapolated from those yields on a straight line basis, rounding to the nearest month) or

  • if the release referred to in the previous bullet (or any successor release) is not published during the week preceding the calculation date or does not contain the yields referred to above, the rate per annum equal to the semi-annual equivalent yield to maturity of the Comparable Treasury Issue, calculated using a price for the Comparable Treasury Issue (expressed as a percentage of its principal amount) equal to the Comparable Treasury Price for that Redemption Date.

The Treasury Rate will be calculated on the third Business Day preceding the Redemption Date.

      “Comparable Treasury Issue” means the United States Treasury security selected by an “Independent Investment Banker” as having a maturity comparable to the remaining term of the Securities to be redeemed that would be utilized, at the time of selection and in accordance with customary financial practice, in pricing new issues of corporate debt securities of comparable maturity to the remaining term of the Securities to be redeemed.

      “Comparable Treasury Price” means, with respect to any Redemption Date for any Securities, the average of all Reference Treasury Dealer Quotations (as defined below) obtained.

      “Independent Investment Banker” means one of the Reference Treasury Dealers appointed by the Trustee after consultation with the Company.

      “Reference Treasury Dealer” means each of Citigroup Global Markets Inc., Goldman, Sachs & Co. and J.P. Morgan Securities Inc. If any Reference Treasury Dealer ceases to be a primary U.S. government securities dealer in New York City (a “Primary Treasury Dealer”), the Company shall substitute another Primary Treasury Dealer for that dealer.

      “Reference Treasury Dealer Quotations” means, with respect to each Reference Treasury Dealer and any Redemption Date, the average, as determined by the Trustee, of the bid and asked prices for the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) quoted in writing to the Trustee by that Reference Treasury Dealer at 5:00 p.m. on the third Business Day preceding the Redemption Date.

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      Notice of any redemption will be mailed at least 30 calendar days but no more than 60 calendar days before the Redemption Date to each holder of the Securities of this series.

      Unless the Company defaults in payment of the Redemption Price, interest will cease to accrue on the Securities of this series called for redemption on and after the Redemption Date.

      If this Security is redeemed in part only, a new Security or Securities of this series and of like tenor for the unredeemed portion hereof will be issued in the name of the Holder hereof upon the cancellation hereof.

      If an Event of Default with respect to Securities of this series shall occur and be continuing, the principal of the Securities of this series may be declared due and payable in the manner and with the effect provided in the Indenture.

      The Indenture permits, with certain exceptions as therein provided, the amendment thereof and the modification of the rights and obligations of the Company and the rights of the Holders of the Securities of each series to be affected under the Indenture at any time by the Company and the Trustee with the consent of the Holders of a majority in principal amount of the Securities at the time Outstanding of each series to be affected. The Indenture also contains provisions permitting the Holders of specified percentages in principal amount of the Securities of each series at the time Outstanding, on behalf of the Holders of all Securities of such series, to waive compliance by the Company with certain provisions of the Indenture and certain past defaults under the Indenture and their consequences. Any such consent or waiver by the Holder of this Security shall be conclusive and binding upon such Holder and upon all future Holders of this Security and of any Security issued upon the registration of transfer hereof or in exchange hereof or in lieu hereof, whether or not notation of such consent or waiver is made upon this Security.

      No reference herein to the Indenture and no provision of this Security or of the Indenture shall alter or impair the obligation of the Company, which is absolute and unconditional, to pay the principal of and any premium and interest on this Security at the times, place and rate, and in the coin or currency, herein prescribed.

      As provided in the Indenture and subject to certain limitations therein set forth, the transfer of this Security is registrable in the Security Register upon surrender of this Security for registration of transfer at the office or agency of the Company in any place where the principal of and any premium and interest on this Security are payable, duly endorsed by, or accompanied by a written instrument of transfer in form satisfactory to the Company and the Security Registrar duly executed by, the Holder hereof or such Holder’s attorney duly authorized in writing, and thereupon one or more new Securities

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of this series and of like tenor, of authorized denominations and for the same aggregate principal amount, will be issued to the designated transferee or transferees.

      The Securities of this series are issuable only in registered form without coupons in denominations of $2,000 and any multiple of $1,000 in excess thereof. As provided in the Indenture and subject to certain limitations therein set forth, Securities of this series are exchangeable for a like aggregate principal amount of Securities of this series and of like tenor of a different authorized denomination, as requested by the Holder surrendering the same.

      No service charge shall be made for any such registration of transfer or exchange of Securities, but the Company or the Trustee may require payment of a sum sufficient to cover any tax or other governmental charge that may be imposed in connection with any registration of transfer or exchange of Securities, other than exchanges pursuant to Section 304, 906 or 1107 of the Indenture not involving any transfer.

      Prior to due and proper presentment of this Security for registration of transfer, the Company, the Trustee and any agent of the Company or the Trustee may treat the Person in whose name this Security is registered as the owner hereof for all purposes, whether or not this Security is overdue, and neither the Company, the Trustee nor any such agent shall be affected by notice to the contrary.

      The Indenture provides that the Company, at the Company’s option, (a) will be discharged from any and all obligations in respect of the Securities (except for certain obligations to register the transfer or exchange of Securities, replace stolen, lost or mutilated Securities, maintain paying agencies and hold moneys for payment in trust) or (b) need not comply with certain restrictive covenants of the Indenture, in each case if the Company deposits, in trust, with the Trustee money or U.S. Government Obligations which through the payment of interest thereon and principal thereof in accordance with their terms will provide money, in an amount sufficient to pay all the principal of and premium, if any, and interest on, the Securities on the dates such payments are due in accordance with the terms of such Securities, and certain other conditions are satisfied.

      No recourse shall be had for the payment of the principal of and premium, if any, or interest on this Security, or for any claim based hereon, or otherwise in respect hereof, or based on or in respect of the Indenture or any indenture supplemental thereto, against any incorporator, stockholder, officer, employee, agent or director, as such, past, present or future, of the Company or of any successor corporation, whether by virtue of any constitution, statute or rule of law, or by the enforcement of any assessment or penalty or otherwise, all such liability being, by the acceptance hereof and as part of the consideration for the issue hereof, expressly waived and released.

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      All terms used in this Security which are defined in the Indenture shall have the meanings assigned to them in the Indenture.

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