Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
IP FIBRE DEVICES LTD
   2. Issuer Name and Ticker or Trading Symbol
IPG PHOTONICS CORP [IPGP] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
C/O IPG PHOTONICS CORPORATION, 50 OLD WEBSTER ROAD		 3. Date of Earliest Transaction (Month/Day/Year)
09/24/2007
(Street)

OXFORD, MA 01540		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 09/24/2007   S(1)   17,319 D $ 18.7315 (2) (3) 8,186,683 D  
Common Stock 09/25/2007   S(1)   15,681 D $ 18.814 (4) 8,171,002 D  

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
IP FIBRE DEVICES LTD
C/O IPG PHOTONICS CORPORATION
50 OLD WEBSTER ROAD
OXFORD, MA 01540		     X    

Signatures

 Angelo P. Lopresti, Attorney-in-fact   09/26/2007
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 23, 2007.
(2) Sales ranged from $18.25 to $18.97 as follows: 52 shares at $18.25; 199 shares at $18.29; 118 shares at $18.30; 49 shares at $18.31; 399 shares at $18.32; 133 shares at $18.33; 66 shares at $18.36; 66 shares at $18.40; 66 shares at $18.46; 852 shares at $18.50; 330 shares at $18.51; 199 shares at $18.52; 37 shares at $18.53; 199 shares at $18.55; 134 shares at $18.56; 66 shares at $18.57; 217 shares at $18.58; 314 shares at $18.59; 598 shares at $18.61; 664 shares at $18.63; 532 shares at $18.64; 66 shares at $18.65; 930 shares at $18.69; 319 shares at $18.70; 133 shares at $18.71; 664 shares at $18.72; 332 shares at $18.73; 66 shares at $18.74; 1,721 shares at $18.75; 66 shares at $18.76; 533 shares at $18.77; 67 shares at $18.7750; 199 shares at $18.78; 133 shares at $18.79; 399 shares at $18.80; 465 shares at $18.81; 133 shares at $18.83; 133 shares at $18.84; 664 shares at $18.85; 332 shares at $18.86; 307 shares $18.87--Continued in Footnote (3).
(3) Continued from Footnote (2): 66 shares at $18.8750; 136 shares at $18.88; 266 shares at $18.89; 399 shares at $18.90; 199 shares at $18.91; 930 shares at $18.92; 339 shares at $18.93; 944 shares at $18.94; 133 shares at $18.9450; 266 shares at $18.95; 332 shares at $18.9550; 291 shares at $18.96; 66 shares at $18.97.
(4) Sales ranged from $18.62 to $18.94 as follows: 66 shares at $18.62; 133 shares at $18.64; 399 shares at $18.65; 199 shares at $18.67; 66 shares at $18.68; 930 shares at $18.69; 332 shares at $18.70; 7 shares at $18.71; 664 shares at $18.72; 214 shares at $18.73; 318 shares at $18.74; 865 shares at $18.75; 133 shares at $18.76; 399 shares at $18.78; 797 shares at $18.79; 465 shares at $18.80; 664 shares at $18.81; 1,927 shares at $18.82; 266 shares at $18.83; 598 shares at $18.84; 465 shares at $18.85; 66 shares at $18.86; 1,661 shares at $18.87; 930 shares at $18.88; 193 shares at $18.89; 1,528 shares at $18.90; 466 shares at $18.91; 598 shares at $18.92; 133 shares at $18.93; 66 shares at $18.95; 133 shares at $18.94.

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