UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of report (Date of earliest event reported): January 11, 2019

ION Geophysical Corporation

(Exact Name of Registrant as Specified in Charter)

Delaware (State or other jurisdiction of incorporation) 1-12691 (Commission file number) 22-2286646 (I.R.S. Employer Identification No.)

2105 CityWest Blvd, Suite 100

Houston, Texas 77042-2855

(Address of principal executive offices, including Zip Code)

(281) 933-3339

(Registrant’s telephone number, including area code)

(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 (see General Instruction A.2. below):

☐	Written communication pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐	Pre-commencement communication pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐	Pre-commencement communication pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 8.01    Other Events

On January 11, 2019, ION Geophysical Corporation (the “Company”) issued the attached press release discussing the Federal Circuit Court’s opinion in WesternGeco LLC v. ION Geophysical Corporation.

Item 9.01    Financial Statements and Exhibits

Exhibit Number	Description
99.1	Press release dated January 11, 2019

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Date: January 11, 2019

ION GEOPHYSICAL CORPORATION
By:	/s/ Matthew Powers
	Matthew Powers
	Executive Vice President, General Counsel and Corporate Secretary

EXHIBIT INDEX

Exhibit Number	Description
99.1	Press release dated January 11, 2019