Schedule 13G

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   3235-0145

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

 

 

SCHEDULE 13G

 

Under the Securities Exchange Act of 1934

(Amendment No.         )*

 

 

 

 

IPG Photonics Corp.


(Name of Issuer)

 

Common Stock Par Value $.01


(Title of Class of Securities)

 

 

44980X109

                                (CUSIP Number)                                

 

12/31/06


(Date of Event Which Requires Filing of this Statement)

 

This schedule is being filed pursuant to 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


CUSIP No.   44980X109    13G    Page 2

 

  1.  

Name of Reporting Person

S.S. or I.R.S. Identification No. of above person

 

TA IX L.P.                                                                      04-3520503

TA/Advent VIII L.P.                                                      04-3334380

TA/Atlantic and Pacific IV L.P.                                    04-3465628

TA Executives Fund LLC                                               04-3398534

TA Investors LLC                                                           04-3395404

   
  2.  

Check the Box if a Member of a Group*

(a)  x

(b)  ¨

   
  3.  

SEC Use Only

 

   
  4.  

Citizenship or Place of Organization

 

TA IX L.P.                                                                      Delaware

TA/Advent VIII L.P.                                                      Delaware

TA/Atlantic and Pacific IV L.P.                                    Delaware

TA Executives Fund LLC                                               Delaware

TA Investors LLC                                                           Delaware

   

NUMBER OF

SHARES

BENEFICIALLY

OWNED BY

EACH

REPORTING

PERSON

WITH

 

  5.    Sole Voting Power

 

        TA IX L.P.                                                1,962,108

        TA/Advent VIII L.P.                                  916,160

        TA/Atlantic and Pacific IV L.P.                 848,364

        TA Executives Fund LLC                            33,134

        TA Investors LLC                                         57,564


  6.    Shared Voting Power

 

        N/A


  7.    Sole Dispositive Power

 

        TA IX L.P.                                               1,962,108

        TA/Advent VIII L.P.                                 916,160

        TA/Atlantic and Pacific IV L.P.                848,364

        TA Executives Fund LLC                           33,134

        TA Investors LLC                                        57,564


  8.    Shared Dispositive Power

 

        N/A

  9.  

Aggregate Amount Beneficially Owned by Each Reporting Person

 

TA IX L.P.                                                                        1,962,108

TA/Advent VIII L.P.                                                           916,160

TA/Atlantic and Pacific IV L.P.                                          848,364

TA Executives Fund LLC                                                     33,134

TA Investors LLC                                                                 57,564

   
10.  

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares*

 

¨

   
11.  

Percent of Class Represented by Amount in Row 9

 

TA IX L.P.                                                                               3.49%

TA/Advent VIII L.P.                                                               1.63%

TA/Atlantic and Pacific IV L.P.                                              1.51%

TA Executives Fund LLC                                                       0.06%

TA Investors LLC                                                                   0.10%

   
12.  

Type of Reporting Person

 

Three Partnerships

Two Limited Liability Companies

   

 

SEE INSTRUCTION BEFORE FILLING OUT!


Attachment to Form 13G   Page 3

 

Item 1 (a) Name of Issuer: IPG Photonics Corp.

 

Item 1 (b) Address of Issuer’s Principal Executive Offices:

 

    

50 Old Webster Road

      
    

Oxford, MA 01540

      
Item 2 (a) Name of Person Filing:       
     TA IX L.P.       
     TA/Advent VIII L.P       
     TA/Atlantic and Pacific IV L.P.       
    

TA Executives Fund LLC

      
     TA Investors LLC       
Item 2 (b) Address of Principal Business Office:       
     c/o TA Associates       
    

John Hancock Tower

      
    

200 Clarendon St 56th Floor

      
    

Boston, MA 02116

      
Item 2 (c) Citizenship: Not Applicable       
Item 2 (d) Title and Class of Securities: Common       
Item 2 (e) CUSIP Number: 44980X109       
Item 3   

If this statement is filed pursuant to Rules 13d-1 (b) or 13d-2 (b), check whether the person filing is a:

 

Not Applicable

 

 

Item 4    Ownership       

Item 4 (a)

   Amount Beneficially Owned:    Common Stock  
     TA IX L.P.    1,962,108  
     TA/Advent VIII L.P    916,160  
     TA/Atlantic and Pacific IV L.P.    848,364  
    

TA Executives Fund LLC

TA Investors LLC

   33,134
57,564
 
 
Item 4 (b)    Percent of Class    Percentage  
     TA IX L.P.    3.49 %
     TA/Advent VIII L.P    1.63 %
     TA/Atlantic and Pacific IV L.P.    1.51 %
    

TA Executives Fund LLC

TA Investors LLC

   0.06
0.10
%
%
Item 4 (c)    Number of shares as to which such person has:       
     (i) sole power to vote or direct the vote:    Common Stock  
     TA IX L.P.    1,962,108  
     TA/Advent VIII L.P    916,160  
     TA/Atlantic and Pacific IV L.P.    848,364  
    

TA Executives Fund LLC

TA Investors LLC

   33,134
57,564
 
 
     (ii) shared power to vote or direct the vote:    N/A  
     (iii) sole power to dispose or direct the disposition:    Common Stock  
     TA IX L.P.    1,962,108  
     TA/Advent VIII L.P    916,160  
     TA/Atlantic and Pacific IV L.P.    848,364  
     TA Executives Fund LLC    33,134  
    

TA Investors LLC

   57,564  
     (iv) shared power to dispose or direct the disposition    N/A  

 

 


 

    Page 4

 

Item 5

  

Ownership of Five Percent or Less of a Class:

 

Not Applicable

    

Item 6

  

Ownership of More than Five Percent on Behalf of Another Person:

 

Not Applicable

    

Item 7

  

Identification and Classification of the subsidiary that acquired the Security being reported on by the Parent Holding Company:

 

Not Applicable

    

Item 8

  

Identification and Classification of Members of the Group:

 

This schedule 13G is filed pursuant to Rule 13d-1 (d). For the agreement of the TA group members to a joint filing, see below.

    

Item 9

  

Notice of Dissolution of Group:

 

Not Applicable

    

Item 10

  

Certification:

 

Not Applicable

    


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.

 

Agreement for Joint Filing

 

TA IX L.P., TA/Advent VIII L.P., TA/Atlantic and Pacific IV L.P., TA Executives Fund LLC and TA Investors LLC hereby agree that TA Associates shall file with the Securities and Exchange Commission a joint schedule 13G on behalf of the above-named parties concerning their beneficial ownership of IPG Photonics Corp.

 

Dated: February 13, 2007

 

TA IX L.P.
By:   TA Associates IX LLC., its General Partner
By:   TA Associates, Inc. its Manager
By:   /s/    THOMAS P. ALBER        
    Thomas P. Alber, Chief Financial Officer

 

TA/Advent VIII L.P.
By:   TA Associates VIII LLC, its General Partner
By:   TA Associates, Inc. its Manager
By:   /s/    THOMAS P. ALBER        
    Thomas P. Alber, Chief Financial Officer

 

TA/Atlantic and Pacific IV L.P.
By:   TA Associates AP IV L.P., its General Partner
By:   TA Associates, Inc. its General Partner
By:   /s/    THOMAS P. ALBER        
    Thomas P. Alber, Chief Financial Officer

 

TA Executives Fund LLC
By:   TA Associates, Inc., its Manager
By:   /s/    THOMAS P. ALBER        
    Thomas P. Alber, Chief Financial Officer

 

TA Investors LLC
By:   TA Associates, Inc., its Manager
By:   /s/    THOMAS P. ALBER        
    Thomas P. Alber, Chief Financial Officer