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 *
GAPONTSEV VALENTIN P
   2. Issuer Name and Ticker or Trading Symbol
IPG PHOTONICS CORP [IPGP] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director __X__ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
CEO & Chairman of the Board
(Last)
(First)
(Middle)
C/O IPG PHOTONICS CORPORATION, 50 OLD WEBSTER ROAD		 3. Date of Earliest Transaction (Month/Day/Year)
12/24/2007
(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 12/24/2007 12/27/2007 S(1)   20,002 D $ 20.22 (2) 11,699,341 D  
Common Stock 12/24/2007 12/27/2007 S(1)   23,000 D $ 20.22 (3) 8,052,002 I Through IP Fibre Devices (UK) Ltd. (5)
Common Stock 12/26/2007 12/27/2007 S(1)   20,000 D $ 20.25 (4) 8,032,002 I Through IP Fibre Devices (UK) Ltd. (5)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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
GAPONTSEV VALENTIN P
C/O IPG PHOTONICS CORPORATION
50 OLD WEBSTER ROAD
OXFORD, MA 01540		   X   X   CEO & Chairman of the Board  

Signatures

 Angelo P. Lopresti, Attorney-at-law   12/28/2007
**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 on August 23, 2007.
(2) Sales ranged from $20.03 to $20.69 as follows: 200 shares at $20.03; 900 shares at $20.06; 300 shares at $20.10; 500 shares at $20.12; 1,200 shares at $20.15; 788 shares at $20.16; 534 shares at $20.17; 900 shares at $20.18; 2,030 shares at $20.19; 766 shares at $20.20; 1,282 shares at $20.21; 400 shares at $20.22; 5,600 shares at $20.22; 302 shares at $20.23; 300 shares at $20.24; 298 shares at $20.25; 100 shares at $20.26; 2 shares at $20.30; 1,266 shares at $20.31; 200 shares at $20.32; 234 shares at $20.33; 100 shares at $20.34; 800 shares at $20.37; 788 shares at $20.38; 100 shares at $20.41; 12 shares at $20.43; and 100 shares at $20.69.
(3) Sales ranged from $20.02 to $20.69 as follows: 100 shares at $20.02; 100 shares at $20.03; 800 shares at $20.06; 100 shares at $20.09; 200 shares at $20.10; 700 shares at $20.12; 916 shares at $20.15; 2,250 shares at $20.16; 569 shares at $20.17; 1,200 shares at $20.18; 2,582 shares at $20.19; 1,288 shares at $20.20; 200 shares at $20.21; 618 shares at $20.21; 200 shares at $20.22; 5,012 shares at $20.22; 507 shares at $20.23; 500 shares at $20.24; 158 shares at $20.25; 100 shares at $20.30; 800 shares at $20.31; 900 shares at $20.33; 200 shares at $20.34; 100 shares at $20.35; 1,300 shares at $20.37; 1,200 shares at $20.38; 100 shares at $20.41; 200 shares at $20.43; and 100 shares at $20.69.
(4) Sales ranged from $19.95 to $20.43 as follows: 100 shares at $19.95; 200 shares at $20.14; 100 shares at $20.15; 200 shares at $20.15; 500 shares at $20.16; 2100 shares at $20.16; 100 shares at $20.17; 1490 shares at $20.18; 200 shares at $20.19; 710 shares at $20.19; 200 shares at $20.20; 1900 shares at $20.20; 100 shares at $20.21; 300 shares at $20.21; 100 shares at $20.22; 100 shares at $20.23; 500 shares at $20.24; 1100 shares at $20.25; 400 shares at $20.26; 100 shares at $20.27; 400 shares at $20.27; 700 shares at $20.28; 1100 shares at $20.29; 1800 shares at 20.30; 1100 shares at $20.31; 500 shares at $20.32; 800 shares at $20.33; 500 shares at $20.34; 1100 shares at $20.35; 100 shares at $20.36; 100 shares at $20.37; 1100 shares at $20.38; 100 shares at $20.41; and 100 shares at $20.43.
(5) The reporting person is the managing director of IP Fibre Devices (UK) Ltd. and has voting and investment power with respect to the shares held of record by IP Fibre Devices (UK) Ltd. The reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these shares in this report shall not be deemed an admission of the beneficial ownership of all the reported shares for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

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