SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

Report of Foreign Private Issuer

Pursuant to Rule 13a- 16 or 15d- 16

of the Securities Exchange Act of 1934

For the month of ~~June~~July 2018

CGG

Tour Maine Montparnasse - 33 Avenue du Maine – BP 191 - 75755

~~Avenue du Maine – BP 191 - 75755~~ PARIS CEDEX 15

(address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F. ~~Form 20-F ☒ Form 40-F ☐~~

~~CGG~~Form 20-F ☒ Form ~~Delivers~~40-F ☐ ~~Final PSTM Products for Dunquin~~

~~Multi-Client~~CGG ~~Survey~~announces inthe ~~Ireland’s~~Appointment ~~Porcupine~~of ~~Basin~~

~~Paris,~~Yuri ~~France~~Baidoukov –as ~~June 14,~~Group ~~2018~~CFO

~~CGG has completed the Pre-Stack Time Migration (PSTM) of its 2~~Paris,~~500-sq-km Dunquin multi-client survey acquired in Block 44 of the~~ ~~Porcupine~~France ~~Basin,~~– ~~west of Ireland~~July 26, in2018 2017. Dunquin is the latest in a series of multi-client surveys that CGG has recently been acquiring in the area, totaling 10,500 sq km of 3D and around 2,000 km of long-offset 2D broadband data. PSDM products for its 2016 Galway and Cairenn surveys were delivered last year.

~~Similar~~CGG toannounces ~~CGG’s~~the ~~Galway~~appointment ~~and~~of ~~Caireen~~Yuri ~~surveys,~~Baidoukov ~~the~~as ~~Dunquin~~Group ~~data~~CFO, ~~will~~effective beSeptember 1, ~~processed~~2018. Yuri Baidoukov ~~through~~brings ~~advanced~~25 ~~velocity~~years ~~modeling~~of ~~and~~international ~~depth~~Oil ~~imaging,~~and ~~following~~Gas industry ~~funding.~~experience ~~Initial~~to ~~FWI~~CGG. ~~results~~He –will asbe ~~illustrated~~based in ~~the~~Paris ~~image~~and ~~below~~report –to ~~reveal important details of~~ the ~~carbonate~~Chief ~~reservoir~~Executive ~~that~~Officer, ~~forms~~Sophie ~~the Dunquin structure~~Zurquiyah.

~~Luc~~“I ~~Schlumberger,~~am ~~EVP,~~very ~~Multi-Client &~~pleased ~~New~~that ~~Ventures,~~Yuri ~~CGG,~~has ~~said:~~agreed ~~“Our~~to ~~new~~join ~~Dunquin~~CGG ~~data~~and ~~set~~look ~~adds~~forward to ~~our~~having ~~high-quality~~him ~~coverage~~on ~~west~~the ofexecutive ~~Ireland, shedding~~team” ~~new~~said ~~light~~Sophie onZurquiyah. “Yuri’s ~~the~~extensive ~~characteristics~~background ofin ~~known~~corporate finance, management and ~~undrilled~~strategy ~~structures.~~as Itwell ~~will~~as ~~enhance~~his ~~industry~~deep ~~understanding~~knowledge of ~~potential~~the ~~areas~~industry ofwill ~~interest~~greatly incontribute ~~this~~to ~~still~~the ~~unexplored~~success ~~region.~~of CGG”.

AYuri ~~preliminary~~Baidoukov ~~FWI~~is ~~test~~at ~~reveals~~present ~~geologic~~time ~~details~~Group CFO at OiLSERV Group, a leading Middle East and North Africa Oilfield Services company. Prior to this, he was CFO of Maersk Oil US, and Group CFO of Integra Group, a ~~buried~~leading ~~volcanic~~CIS ~~island~~Oilfield Services company, listed on the London Stock Exchange. Yuri Baidoukov spent 10 years of his career at Schlumberger in leading finance positions at the corporate and ~~coral~~regional levels, ~~reef~~and ~~atoll~~is recognized for his leadership, professional and technical skills.

~~(image~~Yuri ~~courtesy~~Baidoukov holds an MBA degree from TRIUM Global Executive MBA, a joint program of ~~CGG~~NYU ~~Multi-Client &~~Stern ~~New~~School ~~Ventures~~of Business, LSE and HEC Paris. He also holds a Master of Science (Honors), Economics degree from the Russian Peoples’ Friendship University, and is an affiliate member of the American Institute of CPAs.

About CGG

CGG (www.cgg.com) is a fully integrated Geoscience company providing leading geological, geophysical and reservoir capabilities to its broad base of customers primarily from the global oil and gas industry. Through its three complementary businesses of Equipment, Acquisition and Geology, Geophysics & Reservoir (GGR), CGG brings value across all aspects of natural resource exploration and exploitation. CGG employs more than 5,300 people around the world, all with a Passion for Geoscience and working together to deliver the best solutions to its customers.

CGG is listed on the Euronext Paris SA (ISIN: 0013181864) and the New York Stock Exchange (in the form of American Depositary Shares. NYSE: CGG).

Contacts

Group Communications

Christophe Barnini

Tel: + 33 1 64 47 38 11

E-Mail: : invrelparis@cgg.com

Investor Relations

Catherine Leveau

Tel: +33 1 64 47 34 89

E-mail: : invrelparis@cgg.com

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THIS FORM 6-K REPORT IS HEREBY INCORPORATED BY REFERENCE INTO CGG’S REGISTRATION STATEMENT ON FORM S-8 (REGISTRATION STATEMENT NO. 333-150384, NO. 333-158684, NO. 333-166250, NO. 333-173638, NO. 333-188120 AND NO. 333-197785) AND SHALL BE A PART THEREOF FROM THE DATE ON WHICH THIS REPORT IS FURNISHED, TO THE EXTENT NOT SUPERSEDED BY DOCUMENTS OR REPORTS SUBSEQUENTLY FILED OR FURNISHED.

STATEMENT ON FORM S-8 (REGISTRATION STATEMENT NO. 333-150384, NO. 333-158684, NO. 333-166250,

NO. 333-173638, NO. 333-188120 AND NO. 333-197785) AND SHALL BE A PART THEREOF

FROM THE DATE ON WHICH THIS REPORT IS FURNISHED, TO THE EXTENT NOT SUPERSEDED BY

DOCUMENTS OR REPORTS SUBSEQUENTLY FILED OR FURNISHED.

SIGNATURES

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

Date June 14th, 2018		By	/s/ Yves Goulard
Date	July 26th, 2018		By	/s/ Yves Goulard
			Y. GOULARD
				Y. GOULARD Group Treasurer, acting Chief Financial Officer
			Group Treasurer, acting Chief Financial Officer

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