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             Coherent, Inc. 
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             (Name of Issuer) 
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             Common Stock, par value $0.01 per share 
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             (Title of Class of Securities) 
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             192479103 
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             (CUSIP Number) 
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             December 31, 2021 
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             (Date of Event Which Requires Filing of this Statement) 
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| ✓ | 
             Rule 13d-1(b) 
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| ☐ | 
             Rule 13d-1(c) 
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| ☐ | 
               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. 
           | 
        
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               1 
             | 
            
               NAMES OF REPORTING PERSONS 
             | 
            
               | 
            
               | 
          |
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               Pentwater Capital Management LP 
             | 
            
               | 
            
               | 
          ||
| 
               | 
            
               | 
          |||
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               2 
             | 
            
               CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* 
             | 
            |||
| 
               (a)☐ 
             | 
            ||||
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               (b)☒ 
             | 
            
               | 
            
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          ||
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               3 
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               SEC USE ONLY 
             | 
            
               | 
            
               | 
          |
|   | 
            
               | 
            
               | 
          ||
| 
               | 
            
               | 
          |||
| 
               4 
             | 
            
               CITIZENSHIP OR PLACE OF ORGANIZATION 
             | 
            
               | 
            
               | 
          |
| 
               Delaware USA 
             | 
            
               | 
            
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          ||
| 
               | 
            
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          |||
| 
               NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH 
             | 
            
               5 
             | 
            
               SOLE VOTING POWER 
             | 
            
               | 
            
               | 
          
| 
               1,402,000 
             | 
            
               | 
            
               | 
          ||
| 
               | 
            
               | 
          |||
| 
               6 
             | 
            
               SHARED VOTING POWER 
             | 
            
               | 
            
               | 
          |
|   | 
            
               | 
            
               | 
          ||
| 
               | 
            
               | 
          |||
| 
               7 
             | 
            
               SOLE DISPOSITIVE POWER 
             | 
            
               | 
            
               | 
          |
| 
               1,402,000 
             | 
            
               | 
            
               | 
          ||
| 
               | 
            
               | 
          |||
| 
               8 
             | 
            
               SHARED DISPOSITIVE POWER 
             | 
            
               | 
            
               | 
          |
|   | 
            
               | 
            
               | 
          ||
| 
               | 
            
               | 
          |||
| 
               9 
             | 
            
               AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 
             | 
            
               | 
            
               | 
          |
| 1,402,000 | 
               | 
            
               | 
          ||
| 
               | 
            
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          |||
| 
               10 
             | 
            
               CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* 
             | 
            
               | 
            
               | 
          |
| 
               ☐ 
             | 
            
               | 
            
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          ||
| 
               | 
            
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          |||
| 
               11 
             | 
            
               PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 
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| 
               (1) 5.66% 
             | 
            
               | 
            
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          ||
| 
               | 
            
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          |||
| 
               12 
             | 
            
               TYPE OF REPORTING PERSON* 
             | 
            
               | 
            
               | 
          |
| 
               IA 
             | 
            
               | 
            
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          ||
| 
               | 
            
               | 
          |||
| (1) | 
             The percentage reported is based on 24,763,638 shares of Common Stock, par value $0.01 per share outstanding. 
           | 
        
| Item 1(a). | 
             Name of Issuer: 
           | 
        
| Item 1(b). | 
             Address of Issuer’s Principal Executive Offices: 
           | 
        
| Item 2(a). | 
             Name of Person Filing: 
           | 
        
| Item 2(b). | 
             Address of Principal Business Office, or if None, Residence: 
           | 
        
| Item 2(c). | 
             Citizenship: 
           | 
        
| Item 2(d). | 
             Title of Class of Securities: 
           | 
        
| Item 2(e). | 
             CUSIP Number: 192479103 
           | 
        
| 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) 
           | 
          ✓ | 
             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) 
           | 
          ☐ | 
             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 
           | 
        
| Item 4. | 
             Ownership. 
           | 
        
| (a) | 
             Amount beneficially owned: 1,402,000 
           | 
        
| (b) | 
             Percent of class:  5.66% 
           | 
        
| (c) | 
             Number of shares as to which such person has: 
           | 
        
| (i) | 
             Sole power to vote or to direct the vote 
           | 
        
| (ii) | 
             Shared power to vote or to direct the vote 
           | 
        
| (iii) | 
             Sole power to dispose or to direct the disposition of 
           | 
        
| (iv) | 
             Shared power to dispose or to direct the disposition of 
           | 
        
| Item 5. | 
             Ownership of Five Percent or Less of a Class. 
           | 
        
| Item 6. | 
             Ownership of More Than Five Percent on Behalf of Another Person. 
           | 
        
| Item 7. | 
             Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person. 
           | 
        
| Item 8. | 
             Identification and Classification of Members of the Group. 
           | 
        
| Item 9. | 
             Notice of Dissolution of Group. 
           | 
        
| Item 10. | 
             Certifications. 
           | 
        
| 
             February 11, 2021 
           | 
        |
| 
             (Date) 
           | 
        |
| /s/ Neal Nenadovic | |
| 
             (Signature) 
           | 
        |
| 
             Neal Nenadovic/Chief Financial Officer 
           | 
        |
| 
             (Name/Title) 
           |