SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1(b)(c), AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(b) (Amendment No. 4)* Packaging Corporation of America ----------------------------------------------------- (Name of Issuer) common stock ----------------------------------------------------- (Title of Class of Securities) 695156109 ----------------------------------------------------- (CUSIP Number) December 31, 2006 ----------------------------------------------------- (Date of Event Which requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [X] Rule 13d-1(b) [_] Rule 13d-(c) [_] Rule 13d-1(d) - ---------- *The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page. The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). Page 1 of 9 PagesCUSIP No. 695156109 Schedule 13G Page 2 of 9 Pages ________________________________________________________________________________ 1. NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY) Iridian Asset Management LLC ________________________________________________________________________________ 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [X] ________________________________________________________________________________ 3. SEC USE ONLY ________________________________________________________________________________ 4. CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ________________________________________________________________________________ NUMBER OF 5. SOLE VOTING POWER SHARES N/A _________________________________________________________________ BENEFICIALLY 6. SHARED VOTING POWER OWNED BY N/A _________________________________________________________________ EACH 7. SOLE DISPOSITIVE POWER REPORTING N/A _________________________________________________________________ PERSON 8. SHARED DISPOSITIVE POWER WITH N/A ________________________________________________________________________________ 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON N/A ________________________________________________________________________________ 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [_] ________________________________________________________________________________ 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) N/A ________________________________________________________________________________ 12. TYPE OF REPORTING PERSON* IA ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT! CUSIP No. 695156109 Schedule 13G Page 3 of 9 Pages ________________________________________________________________________________ 1. NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY) The Governor and Company of the Bank of Ireland ________________________________________________________________________________ 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [X] ________________________________________________________________________________ 3. SEC USE ONLY ________________________________________________________________________________ 4. CITIZENSHIP OR PLACE OF ORGANIZATION Republic of Ireland ________________________________________________________________________________ NUMBER OF 5. SOLE VOTING POWER SHARES N/A _________________________________________________________________ BENEFICIALLY 6. SHARED VOTING POWER OWNED BY N/A _________________________________________________________________ EACH 7. SOLE DISPOSITIVE POWER REPORTING N/A _________________________________________________________________ PERSON 8. SHARED DISPOSITIVE POWER WITH N/A ________________________________________________________________________________ 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON N/A ________________________________________________________________________________ 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [_] ________________________________________________________________________________ 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) N/A ________________________________________________________________________________ 12. TYPE OF REPORTING PERSON* CO ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT! CUSIP No. 695156109 Schedule 13G Page 4 of 9 Pages ________________________________________________________________________________ 1. NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY) IBI Interfunding ________________________________________________________________________________ 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [X] ________________________________________________________________________________ 3. SEC USE ONLY ________________________________________________________________________________ 4. CITIZENSHIP OR PLACE OF ORGANIZATION Republic of Ireland ________________________________________________________________________________ NUMBER OF 5. SOLE VOTING POWER SHARES N/A _________________________________________________________________ BENEFICIALLY 6. SHARED VOTING POWER OWNED BY N/A _________________________________________________________________ EACH 7. SOLE DISPOSITIVE POWER REPORTING N/A _________________________________________________________________ PERSON 8. SHARED DISPOSITIVE POWER WITH N/A ________________________________________________________________________________ 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON N/A ________________________________________________________________________________ 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [_] ________________________________________________________________________________ 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) N/A ________________________________________________________________________________ 12. TYPE OF REPORTING PERSON* CO ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT! CUSIP No. 695156109 Schedule 13G Page 5 of 9 Pages ________________________________________________________________________________ 1. NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY) BancIreland/First Financial, Inc. ________________________________________________________________________________ 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [X] ________________________________________________________________________________ 3. SEC USE ONLY ________________________________________________________________________________ 4. CITIZENSHIP OR PLACE OF ORGANIZATION New Hampshire ________________________________________________________________________________ NUMBER OF 5. SOLE VOTING POWER SHARES N/A _________________________________________________________________ BENEFICIALLY 6. SHARED VOTING POWER OWNED BY N/A _________________________________________________________________ EACH 7. SOLE DISPOSITIVE POWER REPORTING N/A _________________________________________________________________ PERSON 8. SHARED DISPOSITIVE POWER WITH N/A ________________________________________________________________________________ 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON N/A ________________________________________________________________________________ 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [_] ________________________________________________________________________________ 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) N/A ________________________________________________________________________________ 12. TYPE OF REPORTING PERSON* CO ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT! CUSIP No. 695156109 Schedule 13G Page 6 of 9 Pages ________________________________________________________________________________ 1. NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY) BIAM (US) Inc. ________________________________________________________________________________ 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [X] ________________________________________________________________________________ 3. SEC USE ONLY ________________________________________________________________________________ 4. CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ________________________________________________________________________________ NUMBER OF 5. SOLE VOTING POWER SHARES N/A _________________________________________________________________ BENEFICIALLY 6. SHARED VOTING POWER OWNED BY N/A _________________________________________________________________ EACH 7. SOLE DISPOSITIVE POWER REPORTING N/A _________________________________________________________________ PERSON 8. SHARED DISPOSITIVE POWER WITH N/A ________________________________________________________________________________ 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON N/A ________________________________________________________________________________ 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [_] ________________________________________________________________________________ 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) N/A ________________________________________________________________________________ 12. TYPE OF REPORTING PERSON* CO ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT! CUSIP No. 695156109 SCHEDULE 13G Page 7 of 9 Pages This Amendment amends in its entirety the Schedule 13G previously filed for the month ended December 31, 2005. ________________________________________________________________________________ Item 1(a). Name of Issuer: Packaging Corporation of America ________________________________________________________________________________ Item 1(b). Address of Issuer's Principal Executive Offices: 1900 West Field Court Lake Forest, Illinois 60045 ________________________________________________________________________________ Item 2. (a) Name of Person Filing. This Statement is being filed by and on behalf of Iridian Asset Management LLC ("Iridian"), The Governor and Company of the Bank of Ireland (the "Bank of Ireland"), BIAM Holdings ("Holdings"), BancIreland (US) Holdings, Inc. ("BancIreland"), and BIAM (US) Inc. (collectively, the "Reporting Persons"). (b) Address of Principal Business Office: The principal business address of Iridian is 276 Post Road West, Westport, CT 06880-4704. The principal business address of Bank of Ireland and Holdings is Head Office, Lower Baggot Street, Dublin 2, Ireland. The principal business address of BancIreland and BIAM (US) Inc. is Liberty Park #15, 282 Route 101, Amherst, NH 03110. (c) Citizenship or Place of Organization: Iridian is a limited liability company. Bank of Ireland and Holdings are Ireland corporations. BancIreland is a New Hampshire corporation. BIAM (US) Inc. is a Delaware corporation. d) Title of Class of Securities: This Statement relates to the shares of common stock, $.01 par value, of Packaging Corporation of America. (e) CUSIP Number: The CUSIP number is 695156109. CUSIP No. 695156109 SCHEDULE 13G Page 8 of 9 Pages _______________________________________________________________________________ Item 3. If This Statement is Filed Pursuant to Rule 13d-1(b), or 13d-2(b) or (c), Check Whether the Person Filing is a: (a) [_] Broker or dealer registered under Section 15 of the Exchange Act. (b) [_] Bank as defined in Section 3(a)(6) of the Exchange Act. (c) [_] Insurance company as defined in Section 3(a)(19) of the Exchange Act. (d) [_] Investment company registered under Section 8 of the Investment Company Act. (e) [X] An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E); (f) [_] An employee benefit plan or endowment fund in accordance with Rule 13d-1(b)(1)(ii)(F); (g) [X] A parent holding company or control person in accordance with Rule 13d-1(b)(1)(ii)(G); (h) [_] A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act; (i) [_] A church plan that is excluded from the definition of an investment company under Section 3(c)(14) of the Investment Company Act; (j) [_] Group, in accordance with Rule 13d-1(b)(1)(ii)(J). If this statement is filed pursuant to Rule 13d-1(c), check this box. [_] _______________________________________________________________________________ Item 4. Ownership. Not Applicable. ________________________________________________________________________________ Item 5. Ownership of Five Percent or Less of a Class. If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following: X ________________________________________________________________________________ Item 6. Ownership of More Than Five Percent on Behalf of Another Person. Not Applicable. ________________________________________________________________________________ Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company. Not Applicable. ________________________________________________________________________________ Item 8. Identification and Classification of Members of the Group. Not Applicable ________________________________________________________________________________ Item 9. Notice of Dissolution of Group. Not Applicable. ________________________________________________________________________________ Item 10. Certifications. By signing below the undersigned certifies that, to the best of its or his knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of and do not have the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having such purpose or effect. CUSIP No. 695156109 SCHEDULE 13-G Page 9 of 9 Pages SIGNATURE. After reasonable inquiry and to the best of its or his knowledge and belief, we certify that the information set forth in this statement is true, complete and correct. Date: February 5, 2007 IRIDIAN ASSET MANAGEMENT LLC By: /s/ Jeffrey M. Elliott ---------------------------------- Jeffrey M. Elliott Executive Vice President THE GOVERNOR AND COMPANY OF THE BANK OF IRELAND By: /s/ John Clifford ---------------------------------- John Clifford Group Secretary BIAM HOLDINGS By: /s/ Sean O'Dwyer ---------------------------------- Sean O'Dwyer Director BANCIRELAND (US) HOLDINGS, INC. By: /s/ Diane Morrison ---------------------------------- Diane Morrison Director BIAM (US) INC. By: /s/ Diane Morrison ---------------------------------- Diane Morrison Director
JOINT FILING AGREEMENT This JOINT FILING AGREEMENT is made and entered into by and among Iridian Asset Management LLC, The Governor and Company of the Bank of Ireland, IBI Interfunding, BancIreland/First Financial, Inc., and BIAM (US) Inc. The parties to this Agreement hereby agree to prepare jointly and file timely (or otherwise deliver as appropriate) all filings on Schedule 13D and Schedule 13G (the "Filings") required to be filed by them pursunat to Section 13(d) or 13(g) under the Securities Exchange Act of 1934, as amended, with respect to their respective ownership of any securities of Packaging Corporation of America that are requireed to be reportd on any Filings. Each party to this Agreement further agrees and covenants to the other parties that it will fully cooperate with such other parties in the preparation and timely filing (and other delivery) of all such Filings. Date: February 5, 2007 IRIDIAN ASSET MANAGEMENT LLC By: /s/ Jeffrey M. Elliott ---------------------------------- Jeffrey M. Elliott Executive Vice President THE GOVERNOR AND COMPANY OF THE BANK OF IRELAND By: /s/ John Clifford ---------------------------------- John Clifford Group Secretary BIAM HOLDINGS By: /s/ Sean O'Dwyer ---------------------------------- Sean O'Dwyer Director BANCIRELAND (US) HOLDINGS, INC. By: /s/ Diane Morrison ---------------------------------- Diane Morrison Director BIAM (US) INC. By: /s/ Diane Morrison ---------------------------------- Diane Morrison Director