============================================================================= UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities and Exchange Act of 1934 (Amendment No. 4) Advanced Medical Optics, Inc. ------------------------------------------------ (Name of Issuer) Common Stock, $0.01 par value per share ------------------------------------------------ (Title of Class of Securities) 00763M108 ------------------------------------------------ (CUSIP Number) Allison Bennington, Esq. ValueAct Capital 435 Pacific Avenue, Fourth Floor San Francisco, CA 94133 (415) 362-3700 ------------------------------------------------ (Name, address and telephone number of Person Authorized to Receive Notices and Communications) Christopher G. Karras, Esq. Dechert LLP Cira Centre 2929 Arch Street Philadelphia, PA 19104-2808 (215) 994-4000 January 11, 2009 ------------------------------------------------ (Date of Event which Requires Filing of this Statement) If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box [ ]. Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 240.13d-7 for other parties to whom copies are to be sent. *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 disclosures provided in a prior cover page. This information required on 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). ============================================================================= SCHEDULE 13D -------------------------- ------------------------- CUSIP NO. 00763M108 Page 2 of 17 ----------------------------------------------------------------------------- 1. NAME OF REPORTING PERSON/S.S. OR I.R.S. INDENTIFICATION NO. OF ABOVE PERSON (entities only) ValueAct Capital Master Fund, L.P. ----------------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [X] (b) [ ] ----------------------------------------------------------------------------- 3. SEC USE ONLY ----------------------------------------------------------------------------- 4. SOURCE OF FUNDS (See Instructions)* WC* ----------------------------------------------------------------------------- 5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) [ ] ----------------------------------------------------------------------------- 6. CITIZENSHIP OR PLACE OF ORGANIZATION British Virgin Islands ----------------------------------------------------------------------------- 7. SOLE VOTING POWER 0 NUMBER OF ---------------------------------------------------------- SHARES 8. SHARED VOTING POWER BENEFICIALLY 8,168,832** OWNED BY EACH ---------------------------------------------------------- PERSON WITH 9. SOLE DISPOSITIVE POWER 0 ---------------------------------------------------------- 10. SHARED DISPOSITIVE POWER 8,168,832** ----------------------------------------------------------------------------- 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 8,168,832** ----------------------------------------------------------------------------- 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES [ ] ----------------------------------------------------------------------------- 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 13.3% ----------------------------------------------------------------------------- 14. TYPE OF REPORTING PERSON PN ----------------------------------------------------------------------------- *See Item 3 **See Item 2 and 5 SCHEDULE 13D -------------------------- ------------------------- CUSIP NO. 00763M108 Page 3 of 17 ----------------------------------------------------------------------------- 1. NAME OF REPORTING PERSON/S.S. OR I.R.S. INDENTIFICATION NO. OF ABOVE PERSON (entities only) ValueAct Capital Master Fund III, L.P. ----------------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [X] (b) [ ] ----------------------------------------------------------------------------- 3. SEC USE ONLY ----------------------------------------------------------------------------- 4. SOURCE OF FUNDS (See Instructions)* WC* ----------------------------------------------------------------------------- 5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) [ ] ----------------------------------------------------------------------------- 6. CITIZENSHIP OR PLACE OF ORGANIZATION British Virgin Islands ----------------------------------------------------------------------------- 7. SOLE VOTING POWER 0 NUMBER OF ---------------------------------------------------------- SHARES 8. SHARED VOTING POWER BENEFICIALLY 642,803** OWNED BY EACH ---------------------------------------------------------- PERSON WITH 9. SOLE DISPOSITIVE POWER 0 ---------------------------------------------------------- 10. SHARED DISPOSITIVE POWER 642,803** ----------------------------------------------------------------------------- 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 642,803** ----------------------------------------------------------------------------- 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES [ ] ----------------------------------------------------------------------------- 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 1.0% ----------------------------------------------------------------------------- 14. TYPE OF REPORTING PERSON PN ----------------------------------------------------------------------------- *See Item 3 **See Item 2 and 5 SCHEDULE 13D -------------------------- ------------------------- CUSIP NO. 00763M108 Page 4 of 17 ---------------------------------------------------------------------------- 1. NAME OF REPORTING PERSON/S.S. OR I.R.S. INDENTIFICATION NO. OF ABOVE PERSON (entities only) VA Partners I, LLC ----------------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [X] (b) [ ] ----------------------------------------------------------------------------- 3. SEC USE ONLY ----------------------------------------------------------------------------- 4. SOURCE OF FUNDS* 00* ----------------------------------------------------------------------------- 5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) [ ] ----------------------------------------------------------------------------- 6. CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ----------------------------------------------------------------------------- 7. SOLE VOTING POWER 0 NUMBER OF ---------------------------------------------------------- SHARES 8. SHARED VOTING POWER BENEFICIALLY 8,168,832** OWNED BY EACH ---------------------------------------------------------- PERSON WITH 9. SOLE DISPOSITIVE POWER 0 ---------------------------------------------------------- 10. SHARED DISPOSITIVE POWER 8,168,832** ----------------------------------------------------------------------------- 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 8,168,832** ----------------------------------------------------------------------------- 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES [ ] ----------------------------------------------------------------------------- 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 13.3% ----------------------------------------------------------------------------- 14. TYPE OF REPORTING PERSON 00 (LLC) ----------------------------------------------------------------------------- *See Item 3 **See Item 2 and 5 SCHEDULE 13D -------------------------- ------------------------- CUSIP NO. 00763M108 Page 5 of 17 ---------------------------------------------------------------------------- 1. NAME OF REPORTING PERSON/S.S. OR I.R.S. INDENTIFICATION NO. OF ABOVE PERSON (entities only) VA Partners III, LLC ----------------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [X] (b) [ ] ----------------------------------------------------------------------------- 3. SEC USE ONLY ----------------------------------------------------------------------------- 4. SOURCE OF FUNDS* 00* ----------------------------------------------------------------------------- 5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) [ ] ----------------------------------------------------------------------------- 6. CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ----------------------------------------------------------------------------- 7. SOLE VOTING POWER 0 NUMBER OF ---------------------------------------------------------- SHARES 8. SHARED VOTING POWER BENEFICIALLY 642,803** OWNED BY EACH ---------------------------------------------------------- PERSON WITH 9. SOLE DISPOSITIVE POWER 0 ---------------------------------------------------------- 10. SHARED DISPOSITIVE POWER 642,803** ----------------------------------------------------------------------------- 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 642,803** ----------------------------------------------------------------------------- 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES [ ] ----------------------------------------------------------------------------- 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 1.0% ----------------------------------------------------------------------------- 14. TYPE OF REPORTING PERSON 00 (LLC) ----------------------------------------------------------------------------- *See Item 3 **See Item 2 and 5 SCHEDULE 13D -------------------------- ------------------------- CUSIP NO. 00763M108 Page 6 of 17 ---------------------------------------------------------------------------- 1. NAME OF REPORTING PERSON/S.S. OR I.R.S. INDENTIFICATION NO. OF ABOVE PERSON (entities only) ValueAct Capital Management, L.P. ----------------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [X] (b) [ ] ----------------------------------------------------------------------------- 3. SEC USE ONLY ----------------------------------------------------------------------------- 4. SOURCE OF FUNDS* 00* ----------------------------------------------------------------------------- 5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) [ ] ----------------------------------------------------------------------------- 6. CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ----------------------------------------------------------------------------- 7. SOLE VOTING POWER 0 NUMBER OF ---------------------------------------------------------- SHARES 8. SHARED VOTING POWER BENEFICIALLY 8,811,635** OWNED BY EACH ---------------------------------------------------------- PERSON WITH 9. SOLE DISPOSITIVE POWER 0 ---------------------------------------------------------- 10. SHARED DISPOSITIVE POWER 8,811,635** ----------------------------------------------------------------------------- 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 8,811,635** ----------------------------------------------------------------------------- 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES [ ] ----------------------------------------------------------------------------- 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 14.3% ----------------------------------------------------------------------------- 14. TYPE OF REPORTING PERSON PN ----------------------------------------------------------------------------- *See Item 3 **See Item 2 and 5 SCHEDULE 13D -------------------------- ------------------------- CUSIP NO. 00763M108 Page 7 of 17 ---------------------------------------------------------------------------- 1. NAME OF REPORTING PERSON/S.S. OR I.R.S. INDENTIFICATION NO. OF ABOVE PERSON (entities only) ValueAct Capital Management, LLC ----------------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [X] (b) [ ] ----------------------------------------------------------------------------- 3. SEC USE ONLY ----------------------------------------------------------------------------- 4. SOURCE OF FUNDS* 00* ----------------------------------------------------------------------------- 5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) [ ] ----------------------------------------------------------------------------- 6. CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ----------------------------------------------------------------------------- 7. SOLE VOTING POWER 0 NUMBER OF ---------------------------------------------------------- SHARES 8. SHARED VOTING POWER BENEFICIALLY 8,811,635** OWNED BY EACH ---------------------------------------------------------- PERSON WITH 9. SOLE DISPOSITIVE POWER 0 ---------------------------------------------------------- 10. SHARED DISPOSITIVE POWER 8,811,635** ----------------------------------------------------------------------------- 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 8,811,635** ----------------------------------------------------------------------------- 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES [ ] ----------------------------------------------------------------------------- 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 14.3% ----------------------------------------------------------------------------- 14. TYPE OF REPORTING PERSON 00 (LLC) ----------------------------------------------------------------------------- *See Item 3 **See Item 2 and 5 SCHEDULE 13D -------------------------- ------------------------- CUSIP NO. 55269P302 Page 8 of 17 ----------------------------------------------------------------------------- 1. NAME OF REPORTING PERSON/S.S. OR I.R.S. INDENTIFICATION NO. OF ABOVE PERSON (entities only) ValueAct Holdings, L.P. --------------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [X] (b) [ ] ----------------------------------------------------------------------------- 3. SEC USE ONLY --------------------------------------------------------------------------- 4. SOURCE OF FUNDS* 00* ----------------------------------------------------------------------------- 5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) [ ] ----------------------------------------------------------------------------- 6. CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ----------------------------------------------------------------------------- 7. SOLE VOTING POWER 0 NUMBER OF ---------------------------------------------------------- SHARES 8. SHARED VOTING POWER BENEFICIALLY 8,811,635** OWNED BY EACH ---------------------------------------------------------- PERSON WITH 9. SOLE DISPOSITIVE POWER 0 ---------------------------------------------------------- 10. SHARED DISPOSITIVE POWER 8,811,635** ----------------------------------------------------------------------------- 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 8,811,635** ----------------------------------------------------------------------------- 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES [ ] ----------------------------------------------------------------------------- 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 14.3% ----------------------------------------------------------------------------- 14. TYPE OF REPORTING PERSON PN ----------------------------------------------------------------------------- *See Item 3 **See Items 2 and 5 SCHEDULE 13D -------------------------- ------------------------- CUSIP NO. 55269P302 Page 9 of 17 ----------------------------------------------------------------------------- 1. NAME OF REPORTING PERSON/S.S. OR I.R.S. INDENTIFICATION NO. OF ABOVE PERSON (entities only) ValueAct Holdings GP, LLC --------------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [X] (b) [ ] ----------------------------------------------------------------------------- 3. SEC USE ONLY ----------------------------------------------------------------------------- 4. SOURCE OF FUNDS* 00* ----------------------------------------------------------------------------- 5. CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) [ ] ----------------------------------------------------------------------------- 6. CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ----------------------------------------------------------------------------- 7. SOLE VOTING POWER 0 NUMBER OF ---------------------------------------------------------- SHARES 8. SHARED VOTING POWER BENEFICIALLY 8,811,635** OWNED BY EACH ---------------------------------------------------------- PERSON WITH 9. SOLE DISPOSITIVE POWER 0 ---------------------------------------------------------- 10. SHARED DISPOSITIVE POWER 8,811,635** ----------------------------------------------------------------------------- 11. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 8,811,635** ----------------------------------------------------------------------------- 12. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES [ ] ----------------------------------------------------------------------------- 13. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 14.3% ----------------------------------------------------------------------------- 14. TYPE OF REPORTING PERSON 00 (LLC) ----------------------------------------------------------------------------- *See Item 3 **See Items 2 and 5 -------------------------- ------------------------- CUSIP NO. 00763M108 Page 10 of 17 ----------------------------------------------------------------------------- THE PURPOSE OF THIS AMENDMENT NO. 4 TO SCHEDULE 13D IS TO AMEND THE OWNERSHIP REPORTS OF THE REPORTING PERSONS AND TO AMEND THE PURPOSE OF TRANSACTION SECTION. THE INFORMATION BELOW SUPPLEMENTS THE INFORMATION PREVIOUSLY PROVIDED. Item 1. Security and Issuer This Schedule 13D relates to the Common Stock, par value $0.01 per share (the "Common Stock"), of Advanced Medical Optics, Inc., a Delaware corporation (the "Issuer"). The address of the principal executive offices of the Issuer is 1700 E. St. Andrew Place, Santa Ana, California 92705. Item 2. Identity and Background This statement is filed jointly by (a) ValueAct Capital Master Fund, L.P. ("ValueAct Master Fund"), (b) ValueAct Capital Master Fund III, L.P. ("ValueAct Master Fund III"), (c) VA Partners I, LLC ("VA Partners I"), (d) VA Partners III, LLC ("VA Partners III"), (e) ValueAct Capital Management, L.P. ("ValueAct Management L.P."), (f) ValueAct Capital Management, LLC ("ValueAct Management LLC"), (g) ValueAct Holdings, L.P. ("ValueAct Holdings") and (h) ValueAct Holdings GP, LLC ("ValueAct Holdings GP") (collectively, the "Reporting Persons"). ValueAct Master Fund and ValueAct Master Fund III are limited partnerships organized under the laws of the British Virgin Islands. Each has a principal business address of 435 Pacific Avenue, Fourth Floor, San Francisco, CA 94133. VA Partners I is a Delaware limited liability company, the principal business of which is to serve as the General Partner to ValueAct Master Fund. VA Partners III is a Delaware limited partnership, the principal business of which is to serve as the General Partner to ValueAct Master Fund III. Each has a principal business address of 435 Pacific Avenue, Fourth Floor, San Francisco, CA 94133. ValueAct Management L.P. is a Delaware limited partnership which renders management services to ValueAct Master Fund and ValueAct Master Fund III. ValueAct Management LLC is a Delaware limited liability company, the principal business of which is to serve as the General Partner to ValueAct Management L.P. Each has a principal business address of 435 Pacific Avenue, Fourth Floor, San Francisco, CA 94133. ValueAct Holdings is a Delaware limited partnership and is the sole owner of the limited partnership interests of ValueAct Management L.P. and the membership interests of ValueAct Management LLC and is the majority owner of the membership interests of VA Partners I and VA Partners III. ValueAct Holdings GP is a Delaware limited liability company, the principal business of which is to serve as the General Partner to ValueAct Holdings. Each has a principal business address of 435 Pacific Avenue, Fourth Floor, San Francisco, CA 94133. (d) and (e). None of the entities or persons identified in this Item 2 has during the past five years been convicted of any criminal proceeding (excluding traffic violations or similar misdemeanors), nor been a party to a civil proceeding of a judicial or administrative body of competent judgment, decree or final order enjoining future violations of, or prohibiting or -------------------------- ------------------------- CUSIP NO. 00763M108 Page 11 of 17 ----------------------------------------------------------------------------- mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws. Item 3. Source and Amount of Funds or Other Consideration The source of funds used for the purchase of the Issuer's securities was the working capital of ValueAct Master Fund. The funds used by these Reporting Persons to make the purchase reported in Item 5(c) below were $1,795,300.00. Item 4. Purpose of Transaction Item 4 to Schedule 13D is amended, in pertinent part as follows: On January 11, 2009, ValueAct Master Fund, ValueAct Master Fund III, Abbott Laboratories, an Illinois corporation ("Abbott"), and Rainforest Acquisition Inc., a Delaware corporation and wholly owned Subsidiary of Abbott ("Rainforest"), entered into a Tender and Support Agreement (the "Tender and Support Agreement") as an inducement to Abbott entering into the Agreement and Plan of Merger (the "Merger Agreement") dated January 11, 2009, by and among Abbott, Rainforest, and the Issuer. Rainforest agreed in the Merger Agreement to commence a tender offer (the "Offer") to acquire all of the outstanding shares of Common Stock and the associated preferred stock purchase rights of the Issuer, at a price per share of $22.00, in cash without interest, subject to the satisfaction or waiver of the conditions to the Offer. ValueAct Master Fund and ValueAct Master Fund III agreed in the Tender and Support Agreement to tender all of their shares in the Offer, and not withdraw them unless the Offer shall have been terminated in accordance with its terms. In addition, pursuant to the Tender and Support Agreement, ValueAct Master Fund and ValueAct Master Fund III granted to Abbott, and any individual designated in writing by Abbott, an irrevocable proxy to, at any meeting of the stockholders of the Issuer called to vote on the merger under the Merger Agreement (the "Merger") and the Merger Agreement, and at any adjournment thereof, or in any other circumstances upon which a vote, consent or other approval with respect to the Merger and the Merger Agreement is sought, vote and exercise all voting and related rights of such person of its shares of Common Stock in favor of the adoption by the Issuer of the Merger and the approval of the Merger Agreement and each of the transactions contemplated thereby. Furthermore, pursuant to the Tender and Support Agreement, ValueAct Master Fund and ValueAct Master Fund III agreed to not transfer any of their shares of Common Stock during the term of the Tender and Support Agreement, subject to certain exceptions, and agreed to vote against (or execute a consent with respect to) any action or agreement that would result in a breach of any covenant, representations or warranty or any other obligation or other agreement of the Issuer under the Merger Agreement and to vote against any action or agreement (other than the Merger Agreement) that would, directly or indirectly, impede, interfere with, delay, postpone or directly or indirectly, discourage the Offer or the Merger. A copy of the Merger Agreement has been previously filed as Exhibit 2.1 to the Issuer's Current Report on Form 8-K dated January 13, 2009 and is incorporated by reference herein. A copy of the Tender and Support -------------------------- ------------------------- CUSIP NO. 00763M108 Page 12 of 17 ----------------------------------------------------------------------------- Agreement has been previously filed as Exhibit 10.1 to the Issuer's Current Report on Form 8-K dated January 13, 2009 and is incorporated by reference herein. Except as set forth in this Report and in connection with the Tender and Support Agreement described above, the Reporting Persons have no plan or proposals that relate to or would result in any of the transactions described in subpararaphs (a) through (j) of Item 4 of Schedule 13D. The Reporting Persons may at any time reconsider and change their plans or proposals relating to the foregoing. Item 5. Interest in Securities of the Issuer (a) and (b). Set forth below is the beneficial ownership of shares of Common Stock of the Issuer for each person named in Item 2. Shares reported as beneficially owned by ValueAct Master Fund and ValueAct Master Fund III are also reported as beneficially owned by (i) ValueAct Management L.P. as the manager of each such investment partnership, (ii) ValueAct Management LLC, as General Partner of ValueAct Management L.P., (iii) ValueAct Holdings, as the sole owner of the limited partnership interests of ValueAct Management L.P. and the membership interests of ValueAct Management LLC and as the majority owner of the membership interests of VA Partners I and VA Partners III and (iv) ValueAct Holdings GP, as General Partner of ValueAct Holdings. Shares reported as beneficially owned by ValueAct Master Fund are also reported as beneficially owned by VA Partners I, as General Partner of ValueAct Master Fund. Shares reported as beneficially owned by ValueAct Master Fund III are also reported as beneficially owned by VA Partners III, as General Partner of ValueAct Master Fund III. VA Partners I, VA Partners III, ValueAct Management L.P., ValueAct Management LLC, ValueAct Holdings and ValueAct Holdings GP also, directly or indirectly, may own interests in one or more than one of the partnerships from time to time. Unless otherwise indicated below, by reason of such relationships each of the ValueAct Master Fund and ValueAct Master Fund III is reported as having shared power to vote or to direct the vote, and shared power to dispose or direct the disposition of, such shares of Common Stock, with VA Partners I (only with respect to ValueAct Master Fund), VA Partners III (only with respect to ValueAct Master Fund III), ValueAct Management L.P., ValueAct Management LLC, ValueAct Holdings and ValueAct Holdings GP. As of the date hereof, ValueAct Master Fund is the beneficial owner of 8,168,832 shares of Common Stock, representing approximately 13.3% of the Issuer's outstanding Common Stock (which shares may also be deemed to be beneficially owned by VA Partners I). As of the date hereof, ValueAct Master Fund III is the beneficial owner of 642,803 shares of Common Stock, representing approximately 1.0% of the Issuer's outstanding Common Stock (which shares may also be deemed to be beneficially owned by VA Partners III). ValueAct Management L.P., ValueAct Management LLC, ValueAct Holdings and ValueAct Holdings GP may each be deemed the beneficial owner of an aggregate of 8,811,635 shares of Common Stock, representing approximately 14.3% of the Issuer's outstanding Common Stock. -------------------------- ------------------------- CUSIP NO. 00763M108 Page 13 of 17 ----------------------------------------------------------------------------- All percentages set forth in this Schedule 13D are based upon the Issuer's reported 61,281,853 outstanding shares of Common Stock as reported in the Issuer's Form 10-Q for the quarterly period ended September 26, 2008. (c) On October 15, 2008 ValueAct Master Fund purchased 260,000 shares of Common Stock from ValueAct Master Fund III at a price of $6.90 per share. Except for the agreements described above, no transactions in the class of securities reported have been effected during the past sixty (60) days preceding the date of this report by any person named in Item 5(a) and (b). (d) and (e) Not applicable. Item 6. Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer Other than as described elsewhere in this Report and as previously reported, the Reporting Persons have no understandings, arrangements, relationships or contracts relating to the Issuer's Common Stock which are required to be described hereunder. Item 7. Material to Be Filed as Exhibits (1) Joint Filing Agreement. (2) Tender and Support Agreement, dated as of January 11, 2009, by and among G. Mason Morfit, ValueAct Capital Master Fund L.P., ValueAct Capital Master Fund III, L.P., Abbott Laboratories and Rainforest Acquisition Inc. previously filed as Exhibit 10.1 to the Current Report on Form 8-K filed by the Issuer on January 13, 2009 and incorporated herein by reference. -------------------------- ------------------------- CUSIP NO. 00763M108 Page 14 of 17 ----------------------------------------------------------------------------- SIGNATURE After reasonable inquiry and to the best of his knowledge and belief, the undersigned certifies that the information set forth in this statement is true, complete and correct. POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below on this Schedule 13D hereby constitutes and appoints Jeffrey W. Ubben, George F. Hamel, Jr., G. Mason Morfit and Allison Bennington, and each of them, with full power to act without the other, his or its true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for him or it and in his or its name, place and stead, in any and all capacities (until revoked in writing) to sign any and all amendments to this Schedule 13D, and to file the same, with all exhibits thereto and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary fully to all intents and purposes as he or it might or could do in person, thereby ratifying and confirming all that said attorneys-in-fact and agents or any of them, or their or his substitute or substitutes, may lawfully do or cause to be done by virtue hereof. ValueAct Capital Master Fund L.P., by VA Partners I, LLC, its General Partner By: /s/ George F. Hamel, Jr. -------------------------------------- Dated: January 14, 2009 George F. Hamel, Jr., Chief Operating Officer ValueAct Capital Master Fund III L.P., by VA Partners III, LLC, its General Partner By: /s/ George F. Hamel, Jr. -------------------------------------- Dated: January 14, 2009 George F. Hamel, Jr., Chief Operating Officer VA Partners I, LLC By: /s/ George F. Hamel, Jr. -------------------------------------- Dated: January 14, 2009 George F. Hamel, Jr., Chief Operating Officer VA Partners III, LLC By: /s/ George F. Hamel, Jr. -------------------------------------- Dated: January 14, 2009 George F. Hamel, Jr., Chief Operating Officer -------------------------- ------------------------- CUSIP NO. 00763M108 Page 15 of 17 ----------------------------------------------------------------------------- ValueAct Capital Management, L.P., by ValueAct Capital Management, LLC its General Partner By: /s/ George F. Hamel, Jr. -------------------------------------- Dated: January 14, 2009 George F. Hamel, Jr., Chief Operating Officer ValueAct Capital Management, LLC By: /s/ George F. Hamel, Jr. -------------------------------------- Dated: January 14, 2009 George F. Hamel, Jr., Chief Operating Officer ValueAct Holdings, L.P., by ValueAct Holdings GP, LLC, its General Partner By: /s/ George F. Hamel, Jr. -------------------------------------- Dated: January 14, 2009 George F. Hamel, Jr., Chief Operating Officer ValueAct Holdings GP, LLC By: /s/ George F. Hamel, Jr. -------------------------------------- Dated: January 14, 2009 George F. Hamel, Jr., Chief Operating Officer -------------------------- ------------------------- CUSIP NO. 00763M108 Page 16 of 17 ----------------------------------------------------------------------------- Exhibit 1 JOINT FILING UNDERTAKING The undersigned parties hereby agree that the Schedule 13D filed herewith (and any amendments thereto) relating to the Common Stock of Advanced Medical Optics, Inc. is being filed jointly on behalf of each of them with the Securities and Exchange Commission pursuant to Section 13(d) of the Securities Exchange Act of 1834, as amended. ValueAct Capital Master Fund L.P., by VA Partners I, LLC, its General Partner By: /s/ George F. Hamel, Jr. -------------------------------------- Dated: January 14, 2009 George F. Hamel, Jr., Chief Operating Officer ValueAct Capital Master Fund III L.P., by VA Partners III, LLC, its General Partner By: /s/ George F. Hamel, Jr. -------------------------------------- Dated: January 14, 2009 George F. Hamel, Jr., Chief Operating Officer VA Partners I, LLC By: /s/ George F. Hamel, Jr. -------------------------------------- Dated: January 14, 2009 George F. Hamel, Jr., Chief Operating Officer VA Partners III, LLC By: /s/ George F. Hamel, Jr. -------------------------------------- Dated: January 14, 2009 George F. Hamel, Jr., Chief Operating Officer ValueAct Capital Management, L.P., by ValueAct Capital Management, LLC its General Partner By: /s/ George F. Hamel, Jr. -------------------------------------- Dated: January 14, 2009 George F. Hamel, Jr., Chief Operating Officer ValueAct Capital Management, LLC By: /s/ George F. Hamel, Jr. -------------------------------------- Dated: January 14, 2009 George F. Hamel, Jr., Chief Operating Officer -------------------------- ------------------------- CUSIP NO. 00763M108 Page 17 of 17 ----------------------------------------------------------------------------- ValueAct Holdings, L.P., by ValueAct Holdings GP, LLC, its General Partner By: /s/ George F. Hamel, Jr. -------------------------------------- Dated: January 14, 2009 George F. Hamel, Jr., Chief Operating Officer ValueAct Holdings GP, LLC By: /s/ George F. Hamel, Jr. -------------------------------------- Dated: January 14, 2009 George F. Hamel, Jr., Chief Operating Officer