UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

October 27, 2016

Date of Report (Date of earliest event reported)

IPG PHOTONICS CORPORATION

(Exact name of registrant as specified in its charter)

Delaware (State or Other Jurisdiction  of Incorporation) 001-33155 (Commission File No.) 04-3444218  (IRS Employer  Identification No.)

50 Old Webster Road

Oxford, Massachusetts 01540

(Address of Principal Executive Offices, including Zip Code)

Registrant’s telephone number, including area code: (508) 373-1100

Not Applicable

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

On October 27, 2016, IPG Photonics Corporation (the "Company") announced its financial results for the third quarter ended September 30, 2016. The full text of the press release issued in connection with the announcement is furnished as Exhibit 99.1 to this Current Report on Form 8-K.

The information on this Current Report on Form 8-K (including Exhibit 99.1) shall not be deemed "filed" for purposes of Section 18 of the Securities Act of 1934, as amended (the "Exchange Act"), or otherwise subject to the liabilities of that Section, nor shall it be deemed incorporated by reference in any filing by the Company under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such a filing.

(d) Exhibits

The following exhibit relating to Item 2.02 shall be deemed to be furnished, and not filed:

99.1  Press Release issued by IPG Photonics Corporation on October 27, 2016

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this Current Report on Form 8-K to be signed on its behalf by the undersigned thereunto duly authorized.

	IPG PHOTONICS CORPORATION
October 27, 2016	By:	/s/ Timothy P.V. Mammen
		Timothy P.V. Mammen
		Senior Vice President and Chief Financial Officer

EXHIBIT NUMBER	DESCRIPTION
99.1	Press Release issued by IPG Photonics Corporation on October 27, 2016