exhibit 4. 2 affiliated managers group, inc. and the bank of new york, as purchase contract agent purchase contract agreement dated as of february 12, 2004 table of contents page article i definitions and other provisions of general application section 1. 1. definitions. 1 section 1. 2. compliance certificates and opinions. 11 section 1. 3. form of documents delivered to agent. 12 section 1. 4. acts of holders ; record dates. 12 section 1. 5. notices. 14 section 1. 6. notice to holders ; waiver. 14 section 1. 7. effect of headings and table of contents. 15 section 1. 8. successors and assigns. 15 section 1. 9. separability clause. 15 section 1. 10. benefits of agreement. 15 section 1. 11. governing law. 15 section 1. 12. legal holidays. 15 section 1. 13. counterparts. 16 section 1. 14. inspection of agreement. 16 article ii certificate forms section 2. 1. forms of certificates generally. 16 section 2. 2. form of agent ’ s certificate of authentication. 17 article iii the securities section 3. 1. title and terms ; denominations. 17 section 3. 2. rights and obligations evidenced by the certificates. 17 section 3. 3. execution, authentication, delivery and dating. 18 section 3. 4. temporary certificates. 19 section 3. 5. registration ; registration of transfer and exchange. 19 section 3. 6. certificated prides. 20 section 3. 7. notices to holders. 21 section 3. 8. mutilated, destroyed, lost and stolen certificates. 21 section 3. 9. persons deemed owners. 22 section 3. 10. cancellation. 22 section 3. 11. establishment of growth prides. 22 section 3. 12. reestablishment of income prides. 24 section 3. 13. transfer of collateral upon occurrence of termination event. 25 section 3. 14. cusip numbers. 26 article iv the senior notes i section 4. 1. interest and other payments ; rights to payments preserved ; interest rate reset ; notice. 26 section 4. 2. notice and voting. 27 section 4. 3. tax event redemption. 28 section 4. 4. consent to treatment for tax purposes. 28 article v the purchase contracts section 5. 1. purchase of common stock. 29 section 5. 2. contract adjustment payments. 30 section 5. 3. initial remarketing. 31 section 5