UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 4)* Coherent, Inc. -------------------------------------------------------------------------------- (Name of Issuer) Common Stock, par value $0.01 per share -------------------------------------------------------------------------------- (Title of Class of Securities) 192479103 -------------------------------------------------------------------------------- (CUSIP Number) with a copy to: Augustus K. Oliver Allen B. Levithan, Esq. Oliver Press Partners, LLC Lowenstein Sandler PC 152 West 57th Street 65 Livingston Avenue New York, New York 10019 Roseland, New Jersey 07068 (212) 277-5654 (973) 597-2406 -------------------------------------------------------------------------------- (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) August 28, 2008 -------------------------------------------------------------------------------- (Date of Event which Requires Filing of this Statement) If the filing person has previously filed a statement on Schedule l3G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of Sections 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 Section 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. The 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). Cusip No. 192479103 -------------------------------------------------------------------------------- 1. Names of Reporting Persons: Oliver Press Partners, LLC I.R.S. Identification Nos. of above persons (entities only): 20-2688930 -------------------------------------------------------------------------------- 2. Check the Appropriate Box if a Member of a Group (See Instructions): (a) (b) X -------------------------------------------------------------------------------- 3. SEC Use Only -------------------------------------------------------------------------------- 4. Source of Funds (See Instructions): OO -------------------------------------------------------------------------------- 5. Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e): -------------------------------------------------------------------------------- 6. Citizenship or Place of Organization: Delaware -------------------------------------------------------------------------------- Number of 7. Sole Voting Power: 0 --------------------------------------- Shares Beneficially 8. Shared Voting Power: 2,581,097* --------------------------------------- Owned by Each Reporting 9. Sole Dispositive Power: 0 --------------------------------------- Person With 10. Shared Dispositive Power: 2,581,097* --------------------------------------- -------------------------------------------------------------------------------- 11. Aggregate Amount Beneficially Owned by Each Reporting Person: 2,581,097* -------------------------------------------------------------------------------- 12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions): -------------------------------------------------------------------------------- 13. Percent of Class Represented by Amount in Row (11): 10.9%* -------------------------------------------------------------------------------- 14. Type of Reporting Person (See Instructions): IA -------------------------------------------------------------------------------- * This is a joint filing by Oliver Press Partners, LLC, Oliver Press Investors, LLC, Augustus K. Oliver and Clifford Press, who share the power to vote and the power to direct the disposition of the 244,118 shares of common stock, par value $0.01 per share (the "Shares"), of Coherent, Inc., a Delaware corporation (the "Company"), owned, as of August 28, 2008, by Davenport Partners, L.P., a Delaware limited partnership, the 2,280,771 Shares owned by JE Partners, a Bermuda partnership, and the 56,208 Shares owned by Oliver Press Master Fund LP, a Cayman limited partnership. Cusip No. 192479103 -------------------------------------------------------------------------------- 1. Names of Reporting Persons: Oliver Press Investors, LLC I.R.S. Identification Nos. of above persons (entities only): 20-2688868 -------------------------------------------------------------------------------- 2. Check the Appropriate Box if a Member of a Group (See Instructions): (a) (b) X -------------------------------------------------------------------------------- 3. SEC Use Only -------------------------------------------------------------------------------- 4. Source of Funds (See Instructions): OO -------------------------------------------------------------------------------- 5. Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e): -------------------------------------------------------------------------------- 6. Citizenship or Place of Organization: Delaware -------------------------------------------------------------------------------- Number of 7. Sole Voting Power: 0 --------------------------------------- Shares Beneficially 8. Shared Voting Power: 2,581,097* --------------------------------------- Owned by Each Reporting 9. Sole Dispositive Power: 0 --------------------------------------- Person With 10. Shared Dispositive Power: 2,581,097* --------------------------------------- -------------------------------------------------------------------------------- 11. Aggregate Amount Beneficially Owned by Each Reporting Person: 2,581,097* -------------------------------------------------------------------------------- 12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions): -------------------------------------------------------------------------------- 13. Percent of Class Represented by Amount in Row (11): 10.9%* -------------------------------------------------------------------------------- 14. Type of Reporting Person (See Instructions): PN -------------------------------------------------------------------------------- * This is a joint filing by Oliver Press Partners, LLC, Oliver Press Investors, LLC, Augustus K. Oliver and Clifford Press, who share the power to vote and the power to direct the disposition of the 244,118 shares of common stock, par value $0.01 per share (the "Shares"), of Coherent, Inc., a Delaware corporation (the "Company"), owned, as of August 28, 2008, by Davenport Partners, L.P., a Delaware limited partnership, the 2,280,771 Shares owned by JE Partners, a Bermuda partnership, and the 56,208 Shares owned by Oliver Press Master Fund LP, a Cayman limited partnership. Cusip No. 192479103 -------------------------------------------------------------------------------- 1. Names of Reporting Persons: Augustus K. Oliver I.R.S. Identification Nos. of above persons (entities only): -------------------------------------------------------------------------------- 2. Check the Appropriate Box if a Member of a Group (See Instructions): (a) (b) X -------------------------------------------------------------------------------- 3. SEC Use Only -------------------------------------------------------------------------------- 4. Source of Funds (See Instructions): OO -------------------------------------------------------------------------------- 5. Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e): -------------------------------------------------------------------------------- 6. Citizenship or Place of Organization: United States -------------------------------------------------------------------------------- Number of 7. Sole Voting Power: 0 --------------------------------------- Shares Beneficially 8. Shared Voting Power: 2,581,097* --------------------------------------- Owned by Each Reporting 9. Sole Dispositive Power: 0 --------------------------------------- Person With 10. Shared Dispositive Power: 2,581,097* --------------------------------------- -------------------------------------------------------------------------------- 11. Aggregate Amount Beneficially Owned by Each Reporting Person: 2,581,097* -------------------------------------------------------------------------------- 12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions): -------------------------------------------------------------------------------- 13. Percent of Class Represented by Amount in Row (11): 10.9%* -------------------------------------------------------------------------------- 14. Type of Reporting Person (See Instructions): IN -------------------------------------------------------------------------------- * This is a joint filing by Oliver Press Partners, LLC, Oliver Press Investors, LLC, Augustus K. Oliver and Clifford Press, who share the power to vote and the power to direct the disposition of the 244,118 shares of common stock, par value $0.01 per share (the "Shares"), of Coherent, Inc., a Delaware corporation (the "Company"), owned, as of August 28, 2008, by Davenport Partners, L.P., a Delaware limited partnership, the 2,280,771 Shares owned by JE Partners, a Bermuda partnership, and the 56,208 Shares owned by Oliver Press Master Fund LP, a Cayman limited partnership. Cusip No. 192479103 -------------------------------------------------------------------------------- 1. Names of Reporting Persons: Clifford Press I.R.S. Identification Nos. of above persons (entities only): -------------------------------------------------------------------------------- 2. Check the Appropriate Box if a Member of a Group (See Instructions): (a) (b) X -------------------------------------------------------------------------------- 3. SEC Use Only -------------------------------------------------------------------------------- 4. Source of Funds (See Instructions): OO -------------------------------------------------------------------------------- 5. Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e): -------------------------------------------------------------------------------- 6. Citizenship or Place of Organization: United States -------------------------------------------------------------------------------- Number of 7. Sole Voting Power: 0 --------------------------------------- Shares Beneficially 8. Shared Voting Power: 2,581,097* --------------------------------------- Owned by Each Reporting 9. Sole Dispositive Power: 0 --------------------------------------- Person With 10. Shared Dispositive Power: 2,581,097* --------------------------------------- -------------------------------------------------------------------------------- 11. Aggregate Amount Beneficially Owned by Each Reporting Person: 2,581,097* -------------------------------------------------------------------------------- 12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions): -------------------------------------------------------------------------------- 13. Percent of Class Represented by Amount in Row (11): 10.9%* -------------------------------------------------------------------------------- 14. Type of Reporting Person (See Instructions): IN -------------------------------------------------------------------------------- * This is a joint filing by Oliver Press Partners, LLC, Oliver Press Investors, LLC, Augustus K. Oliver and Clifford Press, who share the power to vote and the power to direct the disposition of the 244,118 shares of common stock, par value $0.01 per share (the "Shares"), of Coherent, Inc., a Delaware corporation (the "Company"), owned, as of August 28, 2008, by Davenport Partners, L.P., a Delaware limited partnership, the 2,280,771 Shares owned by JE Partners, a Bermuda partnership, and the 56,208 Shares owned by Oliver Press Master Fund LP, a Cayman limited partnership. Item 5. Interest in Securities of the Issuer. ------------------------------------- Item 5 is hereby deleted in its entirety and replaced with the following: "As of the close of business on August 28, 2008, Davenport owned 244,118 Shares, JE owned 2,280,771 Shares, and Master Fund owned 56,208 Shares, constituting 1.0%, 9.6% and 0.2%, respectively, and 10.9% in the aggregate, of the 23,729,545 Shares outstanding as of July 31, 2008, as disclosed in the Company's quarterly report on Form 10-Q for the quarter ended June 28, 2008. OPP, as the investment adviser to the Partnerships, has the power to vote and the power to direct the disposition of such Shares. OPI, as the general partner of the Partnerships, and Messrs. Oliver and Press, as the Managing Members of OPP and OPI, share the power to vote and the power to direct the disposition of such Shares. On August 28, 2008, Master Fund sold 22,992 Shares at a price of $36.6396 per share in an ordinary course brokerage transaction. No other filing person had any transactions in Shares in the last sixty (60) days, or from August 28, 2008 through and including August 29, 2008." Item 7. Exhibits. -------- Exhibit A - Joint Filing Agreement, dated as of August 29, 2008, by and among Oliver Press Investors, LLC, Oliver Press Partners, LLC, Augustus K. Oliver and Clifford Press. Signature --------- After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. August 29, 2008 OLIVER PRESS INVESTORS, LLC By: /s/ Augustus K. Oliver --------------------------------- Augustus K. Oliver Managing Member OLIVER PRESS PARTNERS, LLC By: /s/ Clifford Press --------------------------------- Clifford Press Managing Member /s/ Augustus K. Oliver ------------------------------------ Augustus K. Oliver /s/ Clifford Press ------------------------------------ Clifford Press Attention: Intentional misstatements or omissions of fact constitute Federal criminal violations (See 18 U.S.C. 1001). Exhibit A JOINT FILING AGREEMENT ---------------------- The undersigned agree that this Schedule 13D Amendment No. 4 relating to the shares of common stock of Coherent, Inc. is filed jointly on behalf of each of the undersigned pursuant to Rule 13d-1(k). August 29, 2008 OLIVER PRESS INVESTORS, LLC By: /s/ Augustus K. Oliver --------------------------------- Augustus K. Oliver Managing Member OLIVER PRESS PARTNERS, LLC By: /s/ Clifford Press --------------------------------- Clifford Press Managing Member /s/ Augustus K. Oliver ------------------------------------ Augustus K. Oliver /s/ Clifford Press ------------------------------------ Clifford Press